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Purpose: Swiss Cheese (Monstera adansonii) is an ornamental plant valued for its exotic leaves with openings and for the variety of colors. The technique of controlled exposure to gamma radiation was investigated to induce variegation (color change) in the leaves of this plant. Materials and methods: Monstera adansonii cuttings were irradiated with different doses of radiation with 60Co gamma rays (0, 1, 5, 10, 15, and 20 Gy) and evaluated for size, color, health, and growth. Results: Cuttings irradiated with 1 and 5 Gy exhibited temporary variegation in leaf color, but did not maintain these characteristics over time. Cuttings with higher doses of radiation (10, 15, and 20 Gy) did not survive well and showed a reduction in growth, number of leaves, health, and sprouting rate. Conclusions: This research concludes that gamma radiation can affect the development of cuttings and shows the potential to induce variegation at lower doses, but more studies and prolonged observation are needed to determine whether this technique can produce variegation in a consistent and lasting way in M. adansonii. Therefore, although promising initial results have been observed, it is premature to state that gamma radiation is an effective method for inducing variegation in this plant. [ABSTRACT FROM AUTHOR]

This paper presents the first spatial analysis of racial disparities in the UK welfare sanction regime. As part of their austerity programme, the UK government tightened the conditionality of welfare programmes and intensified the use of financial penalties against welfare claimants who failed to demonstrate compliance with these conditions. Analysing Jobseeker's Allowance (JSA) data from the Department of Work and Pensions (DWP) and the Office for National Statistics between 2012 and 2019 we draw attention to the spatially uneven and highly racialised geography of welfare sanctions in England. Claimants from racially minoritised backgrounds are consistently more likely to be referred for a sanction by Jobcentre caseworkers and receive an adverse decision at the hands of institutional decision‐makers. Within this, however, there are important scalar and spatial differences that warrant critical attention. In rural England, the risk of being sanctioned is substantially higher for all groups, but especially for Mixed heritage and Black/Black British claimants who in some areas are over twice as likely to be sanctioned as their White counterparts. Since ethnicity data have not been published for Universal Credit sanction decisions, the presented evidence offers critical insight into the potential persistence of racial injustice in applying welfare sanctions. We identify 'hotspots' of racism in the sanction regime, most of which are in rural areas, before offering three interpretative frameworks through which spatial and racial disparities might be explained. Any suggestion that such disparities simply derive from the behaviour of DWP staff fails to adequately account for deeply entrenched histories of welfare racism, rural racism and the role of welfare sanctioning in dynamics of racial capitalism: that is, disciplining and impoverishing racialised populations in ways that generate conditions for capital accumulation. By contributing new empirical and theoretical insights to the often neglected study of rural austerity and welfare, the paper calls for scholarship to investigate the variegations of welfare, austerity and racial capitalism in diverse rural contexts. [ABSTRACT FROM AUTHOR]

The ability to produce pulcherriminic acid is a characteristic feature of yeast species of the pulcherrima clade recently merged under the taxonomic name Metschnikowia pulcherrima. This iron chelator cyclodipeptide forms pulcherrimin, a maroon-red pigment with ferric ions. Its synthesis and secretion into the environment is under the control of closely linked genes referred to as the PUL cluster. The examination of 18 generations of single-cell clones generated from a stock culture of the collection strain 11-1090 (CBS 10359) in this study revealed that the biosynthesis of pulcherriminic acid is reversibly switched on and off during the propagation of cells in a way similar to the epigenetic silencing and activation of gene expression (bimodal active/silent state) in near-heterochromatic regions of other yeast species. As the strain is heterozygous for PUL2 alleles encoding slightly different amino acid sequences and has a plastic genome structure, the efficiency of pulcherriminic acid synthesis in the switched-on state is presumed to depend on which PUL2 allele is active and on structural changes in the genome. The transitions between the active and silent states of pulcherriminic acid synthesis are associated with transitions between the active and silent states of antimicrobial antagonism. This association confirms the primary role of pulcherriminic acid in the antimicrobial antagonism of M. pulcherrima. [ABSTRACT FROM AUTHOR]

The development of a digital social credit system in China has sparked debates around urban governance and citizenship performance. Although China's social credit system is portrayed as a single technical system, the article offers a new perspective on digital social credit focused on geographical variegation. We analyze how variegation is manifested through use of multiple data streams and a diverse range of aims operationalized in various social credit systems at the municipal level. Social credit can be seen as part of algorithmic urban governance and an instrument of urban citizenship performance through scoring, ranking, incentives, and punishments. Analysis of social credit systems' development in Chinese cities contributes to debates around the role of the urban Global East and evolution of digital and algorithmic governance in and beyond China. [ABSTRACT FROM AUTHOR]

Premise: While some studies have found leaf variegation to reduce photosynthetic capacity, others showed that it can increase photosynthesis. Thus, what maintains variegation remains an open question. Two primary hypotheses—the anti‐herbivory and abiotic heterogeneity hypotheses—have been posited, yet little empirical research explicitly investigates the maintenance of naturally occurring variegation. Methods: We used field surveys, image analysis, and climatic associations to explore the anti‐herbivory and abiotic heterogeneity hypotheses in 21 populations of Hexastylis heterophylla and H. shuttleworthii, both polymorphic for leaf variegation. We measured the frequency of variegated individuals, variegation intensity, and herbivory for each morph, assessed abiotic correlates with variegation, and measured photosynthetic efficiency. Results: We found a strong elevational cline in leaf variegation strongly linked with abiotic heterogeneity; variegation was more common in lower‐elevation populations characterized by higher temperatures, UV‐B exposure, seasonal light change, and drier, more basic soils. Variegated and nonvariegated individuals experienced similar levels of herbivory. Morphs had similar photosynthetic quantum yields. However, nonvariegated leaves experienced more nonphotochemical quenching, an indication of photoinhibition, and had higher surface temperatures under high light. Conclusions: Our results suggest that variegation may serve as an adaptation to high temperatures and light conditions and can reduce photoinhibition in certain environmental contexts. Thus, abiotic factors can maintain variegation in wild populations and shape geographic clines in variegation. [ABSTRACT FROM AUTHOR]

Abstract The ability to produce pulcherriminic acid is a characteristic feature of yeast species of the pulcherrima clade recently merged under the taxonomic name Metschnikowia pulcherrima. This iron chelator cyclodipeptide forms pulcherrimin, a maroon-red pigment with ferric ions. Its synthesis and secretion into the environment is under the control of closely linked genes referred to as the PUL cluster. The examination of 18 generations of single-cell clones generated from a stock culture of the collection strain 11-1090 (CBS 10359) in this study revealed that the biosynthesis of pulcherriminic acid is reversibly switched on and off during the propagation of cells in a way similar to the epigenetic silencing and activation of gene expression (bimodal active/silent state) in near-heterochromatic regions of other yeast species. As the strain is heterozygous for PUL2 alleles encoding slightly different amino acid sequences and has a plastic genome structure, the efficiency of pulcherriminic acid synthesis in the switched-on state is presumed to depend on which PUL2 allele is active and on structural changes in the genome. The transitions between the active and silent states of pulcherriminic acid synthesis are associated with transitions between the active and silent states of antimicrobial antagonism. This association confirms the primary role of pulcherriminic acid in the antimicrobial antagonism of M. pulcherrima.

In this piece, I make the case for deeper engagement with law and legal methodologies in economic geography. Recent work in and beyond geography has demonstrated that law is constitutive of capitalism. Yet, despite excellent research on many particular spatio-legal topics, there have been few attempts to conceptualize a legal approach to economic geography in any sustained way. Here, I suggest that incorporating law and legal methodologies into existing economic geographic analyses can deepen our explanations of spatio-temporal economic variegation, opening up new research questions and methods for economic geographers and expanding our conceptions of economic governance, agency, and knowledge. [ABSTRACT FROM AUTHOR]

Chromatin condensation state is the key for retrieving genetic information. High‐mobility group protein (HMG) proteins exhibit DNA‐binding and bending activities, playing an important role in the regulation of chromatin structure. We have shown that nucleosomes tightly packaged into heterochromatin undergo considerable dynamic histone H2A‐H2B maintenance via the direct interaction between HP1/Swi6 and facilitate chromatin transcription (FACT), which is composed of the Spt16/Pob3 heterodimer and Nhp6. In this study, we analyzed the role of Nhp6, an HMG box protein, in the FACT at heterochromatin. Pob3 mutant strains showed derepressed heterochromatin‐dependent gene silencing, whereas Nhp6 mutant strains did not show significant defects in chromatin regulation or gene expression, suggesting that these two modules play different roles in chromatin regulation. We expressed a protein fusing Nhp6 to the C‐terminus of Pob3, which mimics the multicellular FACT component Ssrp1. The chromatin‐binding activity of FACT increased with the number of Nhp6 fused to Pob3, and the heterochromatin formation rate was promoted more strongly. Furthermore, we demonstrated that this promotion of heterochromatinization inhibited the heterochromatic variegation caused by epe1+ disruption. Heterochromatic variegation can be observed in a variety of regulatory steps; however, when it is caused by fluctuations in chromatin arrangement, it can be eliminated through the strong recruitment of the FACT complex. [ABSTRACT FROM AUTHOR]

Liberal theories of property assume a linear and serialized temporal orientation facilitated by title registries, recording systems, and the exaltation of land archives. These assumptions, what I call 'property-time', can be productively put into relation with dominant geographic theories of space in two ways. First, I argue that distinguishing liberal notions of property-time from geographic space–time allows us to observe a key dialectic involving the attachment of value (and capital) to space, a process that tracks alongside contradictions of capitalist desire: the desire to continually reshape space (becoming) and to extract enduring and permanent, individuated value from it (being). Second, liberal temporalities of property struggle to apply in illiberal global contexts. Here, states enact urban accumulation regimes that deviate from linear, individuated and sequential notions of property by manipulating records and surgically erasing past ownership. These acts are often characterized as forms of state variegation and provisionality. They are also endemic to how both capital and value are created and/or arbitraged by states through the land regime. These formations remain difficult to connect to traditional theories about the production of value under capital because assumed time logics of property limit our theoretical capacity to describe illiberal urban accumulation regimes. [ABSTRACT FROM AUTHOR]

Salvia uliginosa is a desirable ornamental shrub for the landscape with blue flowers and the ability to attract pollinators, but limited variation is commercially available in this species. Mutation breeding is a valuable tool to induce variation in ornamental species. However, many deleterious effects are associated with mutation breeding, including reduced rooting ability of vegetative cuttings. Cuttings of S. uliginosa were randomly assigned into groups of 10 and exposed to 0, 10, 20, 30, 40, or 50 Gy of gamma rays from a cobalt-60 source to determine an appropriate treatment rate. A follow-up experiment treated 25 S. uliginosa cuttings at 35 Gy to induce favorable mutations. Root quality, survival, and plant height were reduced at higher levels of gamma radiation in the M1V1. However, rooting ability was not impacted in M1V2 selections. Additionally, one mutant was isolated from the 35 Gy treatment with variegated leaves for a mutation rate of 4%. Our research determined a treatment rate that induced a dominant mutation in S. uliginosa while minimizing the deleterious influence of gamma radiation. [ABSTRACT FROM AUTHOR]

Financialisation is not a homogenous but a variegated process. However, the question along which categories this variegation happens is currently unanswered. We identify four variegation categories: financial sector structure, productive structures, the role of the state, and the growth model. We apply these categories to two seemingly similar emerging-economy contexts which have produced different financialisation experiences: Colombia and South Africa. Financialisation in South Africa is much more market-based, meaning it is led by the financial sector unfolding through financial markets and banks' activities visible in their much larger size, activity, and international interconnectedness, than in Colombia. Hence, South African credit extension, bond markets, domestic pension funds, and stock market capitalisation are substantially larger than Colombia's, while the Rand has experienced strong internationalisation since 2000. Nevertheless, there is evidence financialisation processes have been unfolding dynamically in both countries over the past two decades, reinforcing the view of variegated financialisation as a common tendency with significant heterogeneities across countries. [ABSTRACT FROM AUTHOR]

Variegation - the presence of more than one supraglottal consonant per word - is a key challenge for children as they increase their expressive vocabulary toward the end of the single-word period. Here we consider the prosodic structures of target words and child forms in English, Finnish, French, Japanese and Mandarin to determine whether children learning these languages respond similarly to the challenge or instead differ in ways related to the phonological structure of the adult language. Based on proportional occurrence of each structure, we find that the word forms of children learning Mandarin and Japanese show more variegation than do those of children learning the European languages, although their target words do not; proportions of reduplication, consonant harmony and single-consonant words also differ by language. We conclude that experience with the structure of the language - and thus representation, as well as immature articulatory skills - shapes children's responses to variegation.

Existing literature has explored how different firm behaviours and strategies in different institutional contexts result in variegation in network structures. Based on those studies, this paper first examines how networks have been shaped by China's institutional transition in general and the process of marketisation in particular. Furthermore, we stress that the rise of networks in China's film industry has in return boosted the development of private firms and subsequently pushed forward the process of marketisation in this industry. Empirical results show that private firms have benefitted more from the complementarity between direct knowledge spillovers via inter‐firm networks and indirect knowledge spillovers via inter‐city networks, while state‐owned enterprises are incapable of coping with the competition effects stemming from inter‐city networks and fail to benefit from trans‐local knowledge spillovers in networks. Our main contribution is thus to direct attention to the interaction between network dynamics and institutional transition, which remains underexplored in the current literature. [ABSTRACT FROM AUTHOR]

New transposon insertions are deleterious to genome stability. The RNAdirected DNA methylation (RdDM) pathway evolved to regulate transposon activity via DNA methylation. However, current studies have not yet clearly described the transposition regulation. ONSEN is a heat-activated retrotransposon that is activated at 37°C. The plant-specific SUPPRESSOR OF VARIEGATION 3-9 HOMOLOG (SUVH) family proteins function downstream of the RdDM pathway. The SUVH protein families are linked to TE silencing by two pathways, one through DNA methylation and the other through chromatin remodeling. In this study, we analyzed the regulation of ONSEN activity by SUVH2. We observed that ONSEN transcripts were increased; however, there was no transpositional activity in Arabidopsis suvh2 mutant. The suvh2 mutant produced siRNAs from the ONSEN locus under heat stress, suggesting that siRNAs are involved in suppressing transposition. These results provide new insights into the regulatory mechanisms of retrotransposons that involve siRNA in the RdDM pathway. [ABSTRACT FROM AUTHOR]

Javier Moreno’s “Residential Accumulation: A Political Economy Framework” does a great job at distilling how two opposite logics – capitalist production and rent extraction – are at work in housing markets. What I am missing from the framework is room for noise, for variation and variegation, for an ‘and+and’ story, for allowing geographical and market specificity, for different expressions of residential accumulation rather than the assumption that specific forms are the ‘normal’ or pure forms of capitalist accumulation. Many assumptions and generalisations are made. Some of these may be necessary to construct the ideal type of housing provision under capitalism, but there is a point where the ideal type becomes a specific rather than a general or abstracted type, that is, specific to one set of capitalist relations rather than generalizing from a common, or even majority, form of capitalist relations. [ABSTRACT FROM AUTHOR]

Diverse gene dosage disorders (GDDs) increase risk for psychiatric impairment, but characterization of GDD effects on the human brain has so far been piecemeal, with few simultaneous analyses of multiple brain features across different GDDs. Here, through multimodal neuroimaging of 3 aneuploidy syndromes (XXY [total n = 191, 92 control participants], XYY [total n = 81, 47 control participants], and trisomy 21 [total n = 69, 41 control participants]), we systematically mapped the effects of supernumerary X, Y, and chromosome 21 dosage across a breadth of 15 different macrostructural, microstructural, and functional imaging–derived phenotypes (IDPs). The results revealed considerable diversity in cortical changes across GDDs and IDPs. This variegation of IDP change underlines the limitations of studying GDD effects unimodally. Integration across all IDP change maps revealed highly distinct architectures of cortical change in each GDD along with partial coalescence onto a common spatial axis of cortical vulnerability that is evident in all 3 GDDs. This common axis shows strong alignment with shared cortical changes in behaviorally defined psychiatric disorders and is enriched for specific molecular and cellular signatures. Use of multimodal neuroimaging data in 3 aneuploidies indicates that different GDDs impose unique fingerprints of change in the human brain that differ widely depending on the imaging modality that is being considered. Embedded in this variegation is a spatial axis of shared multimodal change that aligns with shared brain changes across psychiatric disorders and therefore represents a major high-priority target for future translational research in neuroscience. [ABSTRACT FROM AUTHOR]

BACKGROUND The data underlying this article are available in the article. Longitudinal melanonychia (LM) presents a challenge because nail unit melanoma (NUM) must be considered as a differential diagnosis. Because nail matrix biopsy may result in nail dystrophy, it is important to distinguish NUM from LM. OBJECTIVE To provide evidence of previously reported clinical factors indicative of NUM in patients with LM. METHODS This was a retrospective study of patients who presented with LM and had biopsy-confirmed NUM from 2005 to 2021. Benign LM was either confirmed by biopsy or considered benign if followed without the need for biopsy. Clinical factors associated with LM and NUM were compared by multivariate regression. RESULTS A total of 177 patients (97 LM and 80 NUM) were included. Multivariate regression showed that high band color intensity (p = .0031), variegation (p = .0005), nail plate splitting (p = .0017), Hutchinson sign (p = .0027), and band change (p = .001) correlated with malignancy. Nail plate splitting was associated with Breslow thickness. CONCLUSION Malignancy should be suspected and biopsy performed in patients with LM and high band color intensity, variegation, nail plate splitting, Hutchinson sign, and band change. [ABSTRACT FROM AUTHOR]

Copyright of Revista Euro Latinoamericana de Análisis Social y Político (RELASP) is the property of Universidad Nacional de Rosario, Facultad de Ciencia Politica y Relaciones Internacionales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Variegation – the presence of more than one supraglottal consonant per word – is a key challenge for children as they increase their expressive vocabulary toward the end of the single-word period. Here we consider the prosodic structures of target words and child forms in English, Finnish, French, Japanese and Mandarin to determine whether children learning these languages respond similarly to the challenge or instead differ in ways related to the phonological structure of the adult language. Based on proportional occurrence of each structure, we find that the word forms of children learning Mandarin and Japanese show more variegation than do those of children learning the European languages, although their target words do not; proportions of reduplication, consonant harmony and single-consonant words also differ by language. We conclude that experience with the structure of the language – and thus representation, as well as immature articulatory skills – shapes children's responses to variegation. [ABSTRACT FROM AUTHOR]

Key message: The deletion mutated rpoC2 leads to yellow stripes of Clivia miniata var. variegata by down regulating the transcription of 28 chloroplast genes and disturbing chloroplast biogenesis and thylakoid membrane development. Clivia miniata var. variegata (Cmvv) is a common mutant of Clivia miniata but its genetic basis is unclear. Here, we found that a 425 bp deletion mutation of chloroplast rpoC2 underlies the yellow stripes (YSs) of Cmvv. Both RNA polymerase PEP and NEP coexist in seed-plant chloroplasts and the β″ subunit of PEP is encoded by rpoC2. The rpoC2 mutation changed the discontinuous cleft domain required to form the PEP central cleft for DNA binding from 1103 to 59 aa. RNA-Seq revealed that 28 chloroplast genes (cpDEGs) were all down-regulated in YSs, of which, four involved in chloroplast protein translation and 21 of photosynthesis system (PS)I, PSII, cytochrome b6/f complex and ATP synthase are crucial for chloroplast biogenesis/development. The accuracy and reliability of RNA-Seq was verified by qRT-PCR. Moreover, the chlorophyll (Chl) a/b content, ratio of Chla/Chlb and photosynthetic rate (Pn) of YS decreased significantly. Meanwhile, chloroplasts of the YS mesophyll cells were smaller, irregular in shape, contain almost no thylakoid membrane, and even proplastid was found in YS. These findings indicate that the rpoC2 mutation down-regulated expression of the 28 cpDEGs, which disturb chloroplast biogenesis and its thylakoid membrane development. Thus, there are not enough PSI and II components to bind Chl, so that the corresponding areas of the leaf are yellow and show a low Pn. In this study, the molecular mechanism of three phenotypes of F1 (Cmvv ♀ × C. miniata ♂) was revealed, which lays a foundation for the breeding of variegated plants. [ABSTRACT FROM AUTHOR]

Yellow-green variegation leaf phenotype adds more value to ornamental plants, but it is regarded as an undesirable trait in crop plants, affecting their yields. Until recently, the underlying mechanism regulating the yellow-green variegation phenotype has remained largely unexplored in soybean. In the present study, we indentified four Glycine max leaf yellow/green variegation mutants, Gmvar1 , Gmvar2 , Gmvar3 , and Gmvar4 , from artificial mutagenesis populations. Map-based cloning, together with the allelic identification test and CRISPR-based gene knockout, proved that mutated GmCS1 controls yellow-green variegation phenotype of the Gmvar mutants. GmCS1 encodes a chorismate synthase in soybean. The content of Phe, Tyr, and Trp were dramatically decreased in Gmcs1 mutants. Exogenous supply of three aromatic amino acid mixtures, or only Phe to Gmvar mutants, leads to recovery of the mutant phenotype. The various biological processes and signalling pathways related to metabolism and biosynthesis were altered in Gmvar mutants. Collectively, our findings provide new insights about the molecular regulatory network of yellow-green variegation leaf phenotype in soybean. [ABSTRACT FROM AUTHOR]

Begonia barosma, a new species in Begonia sect. Coelocentrum Irmscher (Begoniaceae) from limestone karsts across Sino-Vietnamese border is described in detail. It shows high similarities to the adjacently distributed B. lanternaria Irmscher, but differs from it in fleshy, relatively flat leaf blade with different pattern of variegation, sparsely pilose on abaxial surface of outer tepals. The molecular phylogenetic analysis based on ITS supports that the new species is a monophyletic lineage, separating from B. lanternaria Irmscher. Considering its small population size, narrow distribution, and disturbance by human activities, its conservation status is categorized as "Vulnerable (VU B1, B2 ab (iv, v), C2 a (i), D2)" according to the IUCN Red List Categories and Criteria. [ABSTRACT FROM AUTHOR]

Firms can use legal and spatial scaling to increase their control and capacity to exploit assets. Here we examine how platform firms, like AirBnB, Uber, and Bird, scale their operations through global wealth chains. Their use of law is to maximize wealth creation and protection, while their services use local spaces to extract value from established property, labor, and public thoroughfares. We examine how such 'networked accumulation' platform firms use legal and spatial scaling through legal affordances. This includes opportunities for absences, ambiguities and arbitrage that are realized via multi and inter-scalar strategies and produce variegation. Our analysis draws on legal documents, as well as interviews, from Barcelona and San Francisco. The article contributes with a model of how platform firms use legal and spatial scaling, as well as how activists can challenge their operations. [ABSTRACT FROM AUTHOR]

The COVID-19 pandemic has resulted in governments playing increasingly prominent roles as active economic agents. However, state capitalism does not necessarily serve broad developmental purposes, and rather can be directed to supporting sectional and private interests. As the literature on variegated capitalism alerts us, governments and other actors regularly devise fixes in response to a systemic crisis, but the focus, scale, and scope of the interventions vary considerably, according to the constellation of interests. Rapid progress with vaccines notwithstanding, the UK government's response to COVID-19 has been associated with much controversy, not only because of an extraordinarily high death rate, but also because of allegations of cronyism around the granting of government contracts and bailouts. We focus on the latter, investigating more closely who got bailed out. We find that badly affected sectors (e.g. hospitality, transportation) and larger employers were more likely to get bailouts. However, the latter also favored the politically influential and those who had run up debt profligately. Although, as with state capitalism, crony capitalism is most often associated with emerging markets, we conclude that the two have coalesced into a peculiarly British variety, but one that has some common features with other major liberal markets. This might suggest that the eco-systemic dominance of the latter is coming to an end, or, at the least, that this model is drifting towards one that assumes many of the features commonly associated with developing nations. [ABSTRACT FROM AUTHOR]

'Niagara Steck' and 'Niagara Variegada' are two grapevine varieties that arose spontaneously as somatic mutants of 'Niagara Rosada'. Berries characterize 'Niagara Steck' at young stages exhibiting a remarkable brown reticulated structure on the epidermis which develops into a brown-bronze russet-like structure as the berries ripe. The mature berries have strongly acidic flesh. 'Niagara Variegada' shows notable variegation in leaves and berries. Meiotic studies were carried out to ascertain if the mutant phenotypes could be related to any change in chromosome number, structure or other irregularity. Floral buds of both varieties at different developmental stages were collected and fixed for cytological analyses. Chromosome counts at diakinesis/metaphase I showed n=19 bivalents for both varieties. Univalent, trivalent, tetravalent chromosomes or chain configuration were not recorded ruling out the possibility of any alteration in the chromosome number or structure in both mutant varieties. However, low percentages of meiotic irregularities were recorded such as chromosome stickiness, laggards, non-oriented chromosomes, precocious chromosome segregation, tetrads with one microcyte, microspore fusion, and tetrad degeneration. The total percentage of abnormalities was higher in 'Niagara Variegada' (19.68%) than in 'Niagara Steck' (14.40%) which may have contributed to a lower percentage of pollen fertility (79.80%) when compared to 'Steck' (90.74%). The aforementioned varieties can be propagated by hardwood cuttings and constitute an interesting option for ornamentation of home backyards, patios, and gardens with the advantage that 'Niagara Variegada' bearing sweet edible berries. [ABSTRACT FROM AUTHOR]

The purpose of the work is to identify the Biedermeier features of thinking in F. Chopin's large forms in the embodiment of the ideas of the spiritualised "light" play of the noble salon gatherings in memory of the historical Greater Poland. Such a heroic and melancholic background of Chopin's presentation of his achievements, especially within large forms, inspired the understanding of the thought orientation (according to I. Belza) of his thinking. The research methodology is the intonation vision of the genetic unity of musical and speech principles in the development of the concept of B. Asafiev and B. Yavorsky based on the works of D. Androsova, O. Markova, L. Stepanova, L. Shevchenko, with an emphasis on the hermeneutical perspective of the intonation approach, as well as with the advancement of methods -- biographical and descriptive, with emphasis on the intellectual-biographical aspect for the sake of accuracy of interpretive indicators of the analysis of works, analytical and structural as a concentration of musicological specificity of thematic and constructive features of compositions, interspecies stylistic comparative for understanding the interactions of artistic and scientific-religious tendencies in the environment of F Chopin. The scientific novelty of the work is determined by the reliance on Biedermeier's concept of "the big in the small" in the analysis of the large ballad forms, especially with regard to the initial Warsaw and late periods, the time of the composer's formation and final search. Conclusions. Biedermeier draws out the underestimated tempo-factual essence of Chopin's presentation of those forms that, in high tempo playing, "dematerialised" the theatrical variegation of expression in favour of bringing the Ballades closer to the thoughtful, i.e. lyric-epic forms. The latter appear prolonged in the hallelujah complex of Chopin's ultra-fast playing as a representative of spiritualised salon light pianism, with its distancing from existential drama in favour of the glorious lyricism of the "pearl" fioriture of sound in the spirit of the passage figurativeness of old church singing. The parallel of F. Chopin's thoughtful thinking with his contemporary and passionate confessor of the national idea T. Shevchenko's poetic and thoughtful content of the genre expression of large-scale compositions is noteworthy. [ABSTRACT FROM AUTHOR]

Copyright of Eurasian Journal of Ecology is the property of Al-Farabi Kazakh National University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Begonia phoeniogramma, originally described from the Batu Caves limestone massif, includes populations that are naturally segregating for leaf variegation (silver-grey spots). Leaf variegation is the presence of different colours and patterns on the leaf surface mainly caused either by pigment/chemical or structural/physical mechanisms (or both) with the latter being responsible for variegation in Begonia. A small genetic study of eight Begonia taxa belonging to Section Parvibegonia using two molecular markers (ndhF-rpl32 and ITS) was performed to gain insights into genetic diversity of variegated- and plain-leaved individuals of B. phoeniogramma from Batu Caves and Gabai waterfall in Selangor, Malaysia. Results showed B. phoeniogramma, B. elisabethae, B. integrifolia, and B. variabilis belonged within one major clade (BS=100%) with intermixing of samples, suggesting paraphyletic relationships. Significantly negative Tajima's D (P < 0.01), Fu and Li's D* and F* (P < 0.02) values were obtained for overall B. phoeniogramma and B. phoeniogramma from Batu Caves, most probably due to recovery from genetic bottleneck linked to its limestone karst habitat. Phylogram results showed that variegated and plain leaf samples intermixed. Their position suggest a genetic origin and a selectively neutral role for leaf variegation. Our study highlights the importance of conserving Batu Caves for future scientific work. [ABSTRACT FROM AUTHOR]

In this paper, I illustrate how sewage is managed beyond the networked city to create infrastructure mosaics – patchworks of interconnected infrastructures across the city characterised by variegation, fluidity and non-linearity. The purpose of this work is to develop the concept of infrastructure mosaics as a way to understand urban sewage flows in Southern cities based on the lived experience of residents, rather than on concepts developed to describe Northern cities. I begin with a brief review of how the concept of networked cities has been applied to the Global South. I then explore how sewage operates within the networked city and beyond. I finish by contextualising these ideas through the case of sewage in Agra, India. The findings from this work can help planners and policy makers across the North/South divide better understand how urban sewage operates in reality, giving decision makers insights into opportunities for improvement outside the modern infrastructural ideal. [ABSTRACT FROM AUTHOR]

We here study the level of albedo variegation on the nucleus of Comet 67P/Churyumov–Gerasimenko. This is done by fitting the parameters of a standard photometric phase function model to disc–average radiance factor data in images acquired by the Rosetta /OSIRIS Narrow Angle Camera in the orange filter. Local discrepancies between the observed radiance factor and the disc–average solution are interpreted as a proxy |$\mathcal {W}$| of the local single–scattering albedo. We find a wide range |$0.02 \lesssim \mathcal {W}\lesssim 0.09$| around an average of |$\mathcal {W}=0.055$|⁠. The observed albedo variegation is strongly correlated with nucleus morphology – smooth terrain is brighter, and consolidated terrain is darker, than average. Furthermore, we find that smooth terrain darken prior to morphological changes, and that stratigraphically low terrain (with respect to the centre of each nucleus lobe) is brighter than stratigraphically high terrain. We propose that the observed albedo variegation is due to differences in porosity and the coherent effect: compaction causes small brighter particles to act collectively as larger optically effective particles that are darker. Accordingly, we consider the dark consolidated terrain materials more compacted than smooth terrain materials, and darkening of the latter is due to subsidence. [ABSTRACT FROM AUTHOR]

Variegation in Vitis hybrids was investigated to confirm the inheritance as a single, recessive gene as previously proposed and commonly observed in breeding programs. Variegated leaves have ornamental appeal, but the phenotype is sublethal in some environments. Twenty-nine grape families were characterized for variegation including F1, S1, and S2 populations. The majority segregated 3 wild type (WT):1 variegated and were supported by chi-square tests. Four populations had segregation ratios supporting 15:1 or 1:1 models, and a unique flecking phenotype was identified in a Landot 4511 S1 population that suggested the interaction of two recessive loci. A variegated parent was selfed to produce progeny with no WT offspring and was segregated 0:1. Marker trait associations including bulk segregant analysis (BSA), genome-wide association mapping, and quantitative trait loci (QTL) mapping was used on three populations. On chromosome 14, Lvar1 was identified and mapped to 24.5 to 29.5 Mb and associated closely with rhAmpSeq marker 14_27607541. Lvar2 was associated with rhAmpSeq marker 11_18433819 on chromosome 11 at 12.2 to 18.4 Mb. The identification of two loci and the segregation data in some populations suggest that grape breeding germplasm segregates for two recessive loci. The pedigree records suggest that ‘Frontenac’ inherited one of these loci, and that Landot 4511, an ancestor of many populations tested in this experiment, may carry two loci. A total of 252 candidate genes were identified at these loci, including a key target—adenosine triphosphate (ATP)-dependent zinc metalloprotease FtsH6, involved in photosystem II and similar to the var2 mutant in Arabidopsis. This knowledge can help breeders select for ornamental grapevines or elimi)nate variegation from their breeding programs. [ABSTRACT FROM AUTHOR]

The recently described canal-1 tomato mutant, which has a variegated leaf phenotype, has been shown to affect canalization of yield. The corresponding protein is orthologous to AtSCO2 -SNOWY COTYLEDON 2, which has suggested roles in thylakoid biogenesis. Here we characterize the canal-1 mutant through a multi-omics approach, by comparing mutant to wild-type tissues. While white canal-1 leaves are devoid of chlorophyll, green leaves of the mutant appear wild-type-like, despite an impaired protein function. Transcriptomic data suggest that green mutant leaves compensate for this impaired protein function by upregulation of transcription of photosystem assembly and photosystem component genes, thereby allowing adequate photosystem establishment, which is reflected in their wild-type-like proteome. White canal-1 leaves, however, likely fail to reach a certain threshold enabling this overcompensation, and plastids get trapped in an undeveloped state, while additionally suffering from high light stress, indicated by the overexpression of ELIP homolog genes. The metabolic profile of white and to a lesser degree also green tissues revealed upregulation of amino acid levels, that was at least partially mediated by transcriptional and proteomic upregulation. These combined changes are indicative of a stress response and suggest that white tissues behave as carbon sinks. In summary, our work demonstrates the relevance of the SCO2 protein in both photosystem assembly and as a consequence in the canalization of yield., Competing Interests: The authors declare no conflict of interest., (© 2024 The Authors.)

ABSTRACT Variegated species are highly appreciated for their unique aesthetics. Although often confused, variegation and chimerism are distinct phenomena. Chimerism can also cause variation in the color of plant organs, but it is a specific type of genetic mosaic. Limited information is available on variegation and chimerism in Orchidaceae. Here, the first record of a wild foliar chimeric mutant for the subtribe Laeliinae (Orchidaceae) is presented. In July 2020, a sterile chimeric individual of Epidendrum cinnabarinum was found and photographed in a fragment of restinga in the Área de Proteção Ambiental das Lagoas e Dunas do Abaeté, a conservation unit in the municipality of Salvador in the state of Bahia, Northeast Brazil. The plant's phenotype is a mosaic of green, cream and yellow striped leaves in different proportions. Leaves on one caulome are distinctly colored, not only on the margins, but also in the central portion. Anatomical and ecophysiological aspects of the chimeric specimen need to be studied. The abundance and persistence of the chimeric variegation in the individual will be monitored while this phenomenon should be more closely examined for the species.

The world region is missing from financialisation analysis of emerging economies (EEs) with little attention given to regional commonalities or comparative analysis across regions. This article sets out to identify regional commonalities in financialisation experiences across EEs, rooted in domestic institutions and countries' varying integration into the global financial system. Bringing commonalities within and differences between emerging regions to the fore will help us understand the specificities of their political economies and current capitalist experiences. Based on existing research and data availability, six financialisation indicators across five macroeconomic aggregates are identified. Considering 2008–17, a ranking emerges with the most affected region being Central Easter Europe (CEE), followed by Latin America. Emerging Asia takes an intermediate position while EEs in the Middle East and North Africa (MENA) region and Africa show limited signs of financialisation. Our analysis identifies distinct regional features. Financialisation in CEE and Latin America is strongly driven by external forces, the key difference being the role that large domestic capitalists play in the process. Across Emerging Asia, financialisation has mainly unfolded in the private sector while state authorities could to some extent insulate public policy. In MENA, much of the private sector appears outside of the reach of financialisation because of the economic and political power of regional conglomerates. In emerging Africa, the phenomenon is concentrated in very few, if intensely affected, financialisation centres. From a theoretical perspective, we find financialisation is driven by a mix of external factors and domestically influential capitalist elites pursuing their interests. [ABSTRACT FROM AUTHOR]

Thylakoid FtsH complex participates in PSII repair cycle during high light‐induced photoinhibition. The Arabidopsis yellow variegated2 (var2) mutants are defective in the VAR2/AtFtsH2 subunit of thylakoid FtsH complex. Taking advantage of the var2 leaf variegation phenotype, dissections of genetic enhancer loci have yielded novel paradigms in understanding functions of thylakoid FtsH complex. Here, we report the isolation of a new var2 enhancer, enhancer of variegation2‐1 (evr2‐1). We confirmed that EVR2 encodes a chloroplast protein that was known as BALANCE OF CHLOROPHYLL METABOLISM 1 (BCM1), or CHLOROPHYLL BIOSYNTHETIC DEFECT 1 (CBD1). We showed that EVR2/BCM1/CBD1 was involved in the oligomerization of photosystem I complexes. Genetic assays indicated that general defects in chlorophyll biosynthesis and the accumulation of photosynthetic complexes do not necessarily enhance var2 leaf variegation. In addition, we found that VAR2/AtFtsH2 is required for the accumulation of photosynthetic proteins during de‐etiolation. Moreover, we identified PSII core proteins D1 and PsbC as potential EVR2‐associated proteins using Co‐IP/MS. Furthermore, the accumulation of D1 protein was greatly compromised in the var2‐5 evr2‐1 double mutant during de‐etiolation. Together, our findings reveal a functional link between VAR2/AtFtsH2 and EVR2/BCM1/CBD1 in regulating chloroplast development and the accumulation of PSII reaction centre D1 protein during de‐etiolation. BRIEF SUMMARY: Functional characterizations of genetic enhancer loci, designated as ENHANCERs OF VARIEGATION (EVRs), of the Arabidopsis yellow variegated2 mutant have yielded novel paradigms in understanding the functions of VAR2/AtFtsH2 in chloroplast development. Here, we report that the EVR2 locus encodes a chloroplast protein EVR2/BCM1/CBD1 that was previously shown to be involved in chlorophyll biosynthesis. We provide evidence that EVR2/BCM1/CBD1 functions synergistically with VAR2/AtFtsH2 to regulate chloroplast development and the accumulation of photosystem II reaction centre D1 protein during de‐etiolation in Arabidopsis. [ABSTRACT FROM AUTHOR]

Air space-type variegation is the most diverse among the species of known variegated leaf plants and is caused by conspicuous intercellular spaces between the epidermal and palisade cells and among the palisade cells at non-green areas. Trifolium pratense, a species in Fabaceae with V-shaped air space-type variegation, was selected to explore the application potential of variegated leaf plants and accumulate basic data on the molecular regulatory mechanism and evolutionary history of leaf variegation. We performed comparative transcriptome analysis on young and adult leaflets of variegated and green plants and identified 43 candidate genes related to air space-type variegation formation. Most of the genes were related to cell-wall structure modification (CESA, CSL, EXP, FLA, PG, PGIP, PLL, PME, RGP, SKS, and XTH family genes), followed by photosynthesis (LHCB subfamily, RBCS, GOX, and AGT family genes), redox (2OG and GSH family genes), and nitrogen metabolism (NodGS family genes). Other genes were related to photooxidation, protein interaction, and protease degradation systems. The downregulated expression of light-responsive LHCB subfamily genes and the upregulated expression of the genes involved in cell-wall structure modification were important conditions for air space-type variegation formation in T. pratense. The upregulated expression of the ubiquitin-protein ligase enzyme (E3)-related genes in the protease degradation systems were conducive to air space-type variegation formation. Because these family genes are necessary for plant growth and development, the mechanism of the leaf variegation formation in T. pratense might be a widely existing regulation in air space-type variegation in nature. [ABSTRACT FROM AUTHOR]

Vision scientists dedicated their efforts to unraveling the mechanism of filling-in at the blind-spot (BS) through numerous psychophysical experiments. The prevalent interpretation, emphasizing active filling-in, has spurred extensive research endeavors. In a parallel vein, a pertinent study highlighted the predominance of the nasal Visual Field (VF) over the temporal one and postulated the role of the Cortical Magnification Factor (CMF) in explaining the asymmetry of filling-in. In this study, we first replicated this experiment and then conducted BS-specific psychophysical experiments employing various bi-colored and bi-textured (patterned) stimuli. We observed that nasal dominance is not persistent in the context of the spread of perception for BS filling-in. We posit that the visual information processing priority index (VIPPI), comprising the CMF (an intrinsic factor unaffected by stimulus characteristics) and relative luminance (an extrinsic factor dependent on stimulus characteristics), governs the spread of perception for filling-in in case of diverse neighborhoods of the BS. [ABSTRACT FROM AUTHOR]

Despite China's high-profile community development agenda, how to provide neighborhood services, a key social infrastructure in community development, remains a challenge for many local governments facing fiscal austerity. This study addresses this lacuna by interrogating the boom of neighborhood center complexes (NCCs), i.e., building complexes accommodating multiple community services, in Chengdu, which has over 350 NCCs in operation or under construction. Drawing upon a six-year study and synthesis of mixed materials, we identified three salient modes of urban entrepreneurship strategies in developing NCCs: community elites' entrepreneurship, state-owned enterprises, and public-private partnerships. Each mode represents a particular configuration of state power, market forces, and neighborhood participation distinguished from the conventional government-financed mode. These three modes are not merely different urban entrepreneurship strategies but results of systematic reproductions of urban governance practices across different community contexts, featuring variegated urban entrepreneurship at the neighborhood level. Although temporally solving fiscal austerity in community service delivery, these urban entrepreneurship practices problematize community-oriented development regarding equality, effectiveness, and efficiency in service delivery and require further policy innovation. This study enriches the debates around urban entrepreneurialism by emphasizing a variegated perspective and suggests cautions when embracing market power in community development. • Neighborhood service delivery is critical for community development. • Three salient urban entrepreneurialism modes are fostering the boom of NCCs in Chengdu. • Different modes cast varied challenges to the equality, effectiveness, and efficiency of service delivery. • Variegated urban entrepreneurial strategies are embedded in their neighborhood contexts. • Cautions are warranted when embracing market power in community development. [ABSTRACT FROM AUTHOR]

Position-effect variegation (PEV) results from the juxtaposition of euchromatic and heterochromatic components of eukaryotic genomes, silencing genes near the new euchromatin/heterochromatin junctions. Silencing is itself heritable through S phase, giving rise to distinctive random patterns of cell clones expressing the genes intermixed with clones in which the genes are silenced. Much of what we know about epigenetic inheritance in the soma stems from work on PEV aimed at identifying the components of the silencing machinery and its mechanism of inheritance. The roles of two central gene activities--the Su(var)3-9-encoded histone H3-lysine-9 methyltransferase and the Su(var)205-encoded methyl-H3-lysine-9 binding protein heterochromatin protein 1 (HP1a)--have been inferred from terminal phenotypes, leaving considerable gaps in understanding of how PEV behaves through development. Here, we investigate the PEV phenotypes of Su(var)3-9 and Su(var)205 mutations in live developing tissues. We discovered that mutation in Su(var)205 compromises the initial establishment of PEV in early embryogenesis. Later gains of heterochrotininduced gene silencing are possible but are unstable and lost rapidly. In contrast, a strain with mutation in Su(var)3-9 exhibits robust silencing early in development but fails to maintain it through subsequent cell divisions. Our analyses show that, while the terminal phenotypes of these mutations may appear identical, they have arrived at them through different developmental trajectories. We discuss how our findings expand and clarify existing models for epigenetic inheritance of heterochrotininduced gene silencing. [ABSTRACT FROM AUTHOR]

Large-scale urban development projects are a significant format of urban expansion and renewal across the globe. As generators of governance innovation and indicators of the future city in each urban context, large-scale development projects have been interpreted within frameworks of 'variegations' of wider circulating processes, such as neoliberalisation or financialisation. However, such projects often entail significant state support and investment, are strongly linked to a wide variety of transnational investors and developers and are frequently highly contested in their local environments. Thus, each project comes to fruition in a distinctive regulatory context, often as an exception to the norm, and each emerges through complex interactions over a long period of time amongst an array of actors. We therefore seek to broaden the discussion from an analytical focus on variegated globalised processes to consider three large-scale urban development projects (in Shanghai, Johannesburg and London) as distinctive (transcalar) territorialisations. Using an innovative comparative approach, we outline the grounds for a systematic analytical conversation across mega-urban development projects in very different contexts. Initially, comparability rests on the shared features of large-scale developments – that they are multi-jurisdictional, involve long time scales and bring significant financing challenges. Comparing three development projects, we are able to interrogate, rather than take for granted, how a range of wider processes, circulating practices, transcalar actors and territorial regulatory formations composed specific urban outcomes in each case. Thinking across these diverse cases provides grounds for rebuilding understandings of urban development politics. [ABSTRACT FROM AUTHOR]

Position effect variegation (PEV) is a phenomenon wherein the expression level of a gene strongly depends on its genomic position. PEV can be observed when a gene is moved via a chromosome rearrangement or identical genetic constructs are inserted into different regions of the genome. The eukaryotic genome has a domain organization, and gene activity within a domain depends not only on the nucleotide sequence of a gene, but also on the state of surrounding chromatin, thus being regulated epigenetically. Chromatin is a complex of DNA, RNA, and associated structural and regulatory proteins. The epigenetic status of chromatin depends on the replication time of a given genomic region, particular regulatory DNA motifs, and contacts with the inner nuclear envelope (lamina) and other chromosome regions (topologically associated domains). PEV results from the changes in the epigenetic state of a gene and provides a unique tool to study the molecular and biochemical processes that underlie the establishment and switching of epigenetic states. Understanding the molecular mechanisms of PEV in human is of clinical importance, in particular, for the detection and treatment of retroviral infections because the local chromatin state may determine the latent/active state transition of an infection, such as HIV. In addition, a large number of human neurodegenerative diseases are caused by epigenetic gene inactivation due to expansion of short repeats. Finally, to apply gene therapy methods, it is important to develop approaches that ensure a necessary level of transgene expression with sufficient accuracy. [ABSTRACT FROM AUTHOR]

The Brethren were pervasive in Lowland Scottish society during the twentieth century. At the beginning of the century in Scotland, they had spilt into three main sections: the Open Brethren, the Exclusive Brethren, and the Churches of God. Schism was a recurring feature in the last two sections, and this paper traces the history of the various secessions and offers an account of why they were prone to division. Using the sociological typologies of sect and denomination, this paper examines the relationship between the Brethren and Scottish culture and society, including social class, use of leisure, and withdrawal and engagement in the cultural and business worlds, noting commonalities and variegations across the various streams. The final sections examine the growth and decline of the various streams and the reasons for both. [ABSTRACT FROM AUTHOR]

The objective of this work was to identify the social representations associated with the provision and access to water for human consumption. It was approached as a case study in the municipality of Santa María Teopoxco, Oaxaca. An environmental history was elaborated to analyze the representations involved in the access and management of water. Two processes were identified: in the Nahuatl world of Teopoxco there is a legacy of the Mesoamerican indigenous worldview, with the stories of the tepechane, this notion is mixed with the representation of God and the Earth, who provided and allowed access to water. These concepts are opposed to the notion of "resource". On the other hand, a new representation is emerging, the individual, which is attributed to changes in government policies. That the individual decides on the elements of nature is leading individualistic and mercantile representations in indigenous relations. [ABSTRACT FROM AUTHOR]

The most significant case of transnational state capitalism today is China's Belt and Road Initiative (BRI) which seeks to expand/extend the country's geoeconomic and geopolitical integrations globally. We conceptualise the BRI as manifest principally through industrial offshoring, infrastructure investments and exports from China. These vectors articulate with particular places, forming transnational couplings that shape development outcomes. We examine the BRI's couplings and their development implications in the East African countries of Djibouti, Ethiopia and Kenya where China has engaged significantly. We demonstrate the contingent manner of BRI's variegations; its pragmatism, flexibility, and limitations as a hegemonic or developmental project. [ABSTRACT FROM AUTHOR]

Particle crowd algorithmic rule is a mayor examination hotspot in the authentic optimization algorithmic rule respond. Based on the PSO algorithmic rule to make optimal the RBFNN example, an amended order of nonlinear adaptable laziness power supported on the contest of population variegation is intended to extend the fixedness of population unlikeness performance and hunt capabilities to preclude the algorithmic rule from dripping into a topical extreme point prematurely, thereby further improving the prophecy correctness. Simulation experience shows that the amended PSO-RBFNN standard has open advantageous in the fixedness and sharp convergency of the prognosis proceed. In fashion to reprove the justness of reverse kinematics of robots with composite make and supercilious degrees of liberty, an amended adaptative suffix abound optimization (IAPSO) is spoken. First, the motoric equality of the 6-DOF strength-example avaricious robot design is established by the amended DH (Denavit-Hartenberg) argument course; second, on the base of the existent morsel abound algorithmic rule, the population Manhattan ceremoniousness is interested to lead the maneuver condition of the population in aqiqiy measure. And bound the adaptative lore substitute accordingly to the dissimilar maneuver possession and then adopt distinct site and hurry update modes; lastly, the fitness province with handicap substitute is present to trial the honest-prick and extended course transposition of the robot mold, and the delusion is not joint product major than 0.005 rad. The feint inference shows that the established kinematics shape is chasten, and the amended algorithmic program captures into recital the nicety, uniqueness, and velocity of the inverted resolution of the existent PSO algorithmic program, as well as higher deliverance truths. We conduct an experiment on the Brazilian jiu-jitsu. The results have clearly shown the advantage of our method. [ABSTRACT FROM AUTHOR]

Camellia sinensis cv. 'Yanling Huayecha' (YHC) is an albino-green chimaeric tea mutant with stable genetic traits. Here, we analysed the cell ultrastructure, photosynthetic pigments, amino acids, and transcriptomes of the albino, mosaic, and green zones of YHC. Well-organized thylakoids were found in chloroplasts in mesophyll cells of the green zone but not the albino zone. The albino zone of the leaves contained almost no photosynthetic pigment. However, the levels of total amino acids and theanine were higher in the albino zone than in the mosaic and green zones. A transcriptomic analysis showed that carbon metabolism, nitrogen metabolism and amino acid biosynthesis showed differences among the different zones. Metabolite and transcriptomic analyses revealed that (1) downregulation of CsPPOX1 and damage to thylakoids in the albino zone may block chlorophyll synthesis; (2) downregulation of CsLHCB6 , CsFdC2 and CsSCY1 influences chloroplast biogenesis and thylakoid membrane formation, which may contribute to the appearance of variegated tea leaves; and (3) tea plant variegation disrupts the balance between carbon and nitrogen metabolism and promotes the accumulation of amino acids, and upregulation of CsTSⅠ and CsAlaDC may enhance L-theanine synthesis. In summary, our study provides a theoretical basis and valuable insights for elucidating the molecular mechanisms and promoting the economic utilization of variegation in tea. • CsPPOX1 , CsLHCB6 , CsFdC2 and CsSCY1 downregulation and thylakoid damage in albino zone may cause variegated tea leaves. • Tea plant variegation disrupts the balance between carbon and nitrogen metabolism and promotes amino acids accumulation. • Upregulation of CsTSⅠ and CsAlaDC may enhance theanine synthesis. [ABSTRACT FROM AUTHOR]

Variegation is a common trait in plants that characteristically displays white or off-colored plant tissue. In grapevine, leaf variegation is expressed as white and pale green leaf tissue resulting in plants that are stunted in growth and hindered in development. In this study, several experiments were performed to investigate the impact of this mutation has on the anatomy of grape leaves and physiology of the plant. Histological staining of variegated and nonvariegated leaf tissue transections showed alterations to the leaf palisade mesophyll structure that affected leaf tissue width. An assay quantifying leaf pigments was performed to compare chlorophyll and carotenoid concentrations in leaves between variegated and wild-type seedlings, which showed that variegated leaf samples had reduced chlorophyll and carotenoid concentration. Through fluorescence imaging, we determined that photochemical efficiency of photosystem II (PSII) is reduced in variegated seedlings. By growing variegated and wild-type plants under high, medium, and low light intensities that variegated plants exposed to higher light intensity reduces the phenotypic expression of the variegation trait. Also, we found variegated plants to have significant reductions in growth traits such as plant height, leaf number, branch number, and dry weight compared with wild-type phenotype plants. Overall, our experiments revealed the variegation mutation altered normal leaf development causing significant effects to grapevine physiology. [ABSTRACT FROM AUTHOR]

Camellia sinensis cv. 'Yanlingyinbiancha' is a leaf-variegated mutant with stable genetic traits. The current study aimed to reveal the differences between its albino and green tissues, and the molecular mechanism underlying the variegation. Anatomic analysis showed the chloroplasts of albino tissues to have no intact lamellar structure. Photosynthetic pigment in albino tissues was significantly lower than that in green tissues, whereas all catechin components were more abundant in the former. Transcriptome analysis revealed most differentially expressed genes involved in the biosynthesis of photosynthetic pigment, photosynthesis, and energy metabolism to be downregulated in albino tissues while most of those participating in flavonoid metabolism were upregulated. In addition, it was found cryptochrome 1 (CRY1) and phytochrome B (PHYB) genes that encode blue and red light photoreceptors to be downregulated. These photoreceptors mediate chloroplast protein gene expression, chloroplast protein import and photosynthetic pigment biosynthesis. Simultaneously, SUS gene, which was upregulated in albino tissues, encodes sucrose synthase considered a biochemical marker for sink strength. Collectively, we arrived to the following conclusions: (1) repression of the biosynthesis of photosynthetic pigment causes albinism; (2) destruction of photoreceptors in albino tissues suppresses photomorphogenesis, leading to abnormal chloroplast development; (3) albino tissues receive sucrose from the green tissues and decompose their own storage substances to obtain the energy needed for survival; and (4) UV-B signal and brassinosteroids promote flavonoid biosynthesis. [ABSTRACT FROM AUTHOR]

An ongoing philosophical discussion concerns how various types of mental states fall within broad representational genera—for example, whether perceptual states are "iconic" or "sentential," "analog" or "digital," and so on. Here, I examine the grounds for making much more specific claims about how mental states are structured from constituent parts. For example, the state I am in when I perceive the shape of a mountain ridge may have as constituent parts my representations of the shapes of each peak and saddle of the ridge. More specific structural claims of this sort are a guide to how mental states fall within broader representational kinds. Moreover, these claims have significant implications of their own about semantic, functional, and epistemic features of our mental lives. But what are the conditions on a mental state's having one type of constituent structure rather than another? Drawing on explanatory strategies in vision science, I argue that, other things being equal, the constituent structure of a mental state determines what I call its distributional properties—namely, how mental states of that type can, cannot, or must co‐occur with other mental states in a given system. Distributional properties depend critically on and are informative about the underlying structures of mental states, they abstract in important ways from aspects of how mental states are processed, and they can yield significant insights into the variegation of psychological capacities. [ABSTRACT FROM AUTHOR]