12 results on '"Peruzzi, Lorenzo"'
Search Results
2. Phytochemical study of Stachys sylvatica (Lamiaceae) aerial parts.
- Author
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Di Stasi, Mauro, Dolci, David, Peruzzi, Lorenzo, Braca, Alessandra, and De Leo, Marinella
- Subjects
PHENOLIC acids ,CHLOROGENIC acid ,NEOLIGNANS ,NUCLEAR magnetic resonance spectroscopy ,STACHYS ,LAMIACEAE ,CAFFEIC acid - Abstract
In this article, the first complete phytochemical study of Stachys sylvatica (Lamiaceae) aerial parts, collected in Tuscan-Emilian Apennine, is reported. Twenty-three known compounds were isolated from the chloroform, chloroform-methanol 9:1 and methanol extracts; they were subsequently characterized by means of one- and two-dimensional nuclear magnetic resonance spectroscopy (1D- and 2D-NMR) and mass spectrometry as six simple phenolic derivatives (chlorogenic acid (1), caffeic acid (2), p-coumaric acid methyl ester (3), niduloic acid (4), hydroxytyrosol (5), tyrosol (6)), one glycosylated aliphatic alcohol (ebracteatoside B (7)), six glycosylated phenylpropanoids (decaffeoyl verbascoside (8), lavandulifolioside (9), betanyoside F (10), verbascoside (11), isoacteoside (12), cystanoside D (13)), four flavonoids (stachyspinoside (14), chrysoeriol 7-O-β-D-glucopyranoside (15), naringenin 7-O-(6"-E + Z-p-coumaroyl)-β-D-glucopyranoside (16), apigenin 7-O-(6"-E + Z-p-coumaroyl)-β-D-glucopyranoside (17)), three lignans (syringaresinol 4'-O-β-D-glucopyranoside (18), pinoresinol 4-O-β-D-glucopyranoside (19), 2-episesaminol 2-O-β-D-glucopyranoside (20)) and three ionones (loliolide (21), vomifoliol (22), (3S,5R,6R,7E,9R)-3,5,6,9-tetrahydroxy-7-megastigmene (23)). In addition, a further phenolic derivative (ethyl caffeate (b)) and four carboxylic acids (azelaic acid (a), trihydroxyoctadecadienoic acid (c), trihydroxyoctadecenoic acid (d) and dihydroxydodecadienoic acid (e)) have been tentatively identified by ultra-high performance liquid chromatography coupled to an electrospray ionization source high-resolution Orbitrap mass spectrometer (UHPLC-ESI-HR-Orbitrap/MS). Chemosystematic relationships between S. sylvatica and other related species were highlighted. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
3. Diploids and polyploids in the Santolina chamaecyparissus complex (Asteraceae) show different karyotype asymmetry.
- Author
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Giacò, Antonio, De Giorgi, Paola, Astuti, Giovanni, Varaldo, Lucia, Sáez, Llorenç, Carballal, Rodrigo, Serrano, Miguel, Casazza, Gabriele, Caputo, Paolo, Bacchetta, Gianluigi, and Peruzzi, Lorenzo
- Subjects
KARYOTYPES ,POLYPLOIDY ,PLOIDY ,CHROMOSOMES ,CYTOGENETICS ,SPECIES ,SQUASHES - Abstract
A traditional karyomorphological approach was carried out in order to investigate the cytotaxonomic relationships among the species of the Santolina chamaecyparissus complex. All the 14 species included in this species complex were analysed for a total of 39 populations. Metaphase plates were obtained by squashing root tips stained with Feulgen technique. Measurable metaphase plates available in literature were also re-analysed. Chromosome number (2n), total haploid (monoploid) length (THL), and karyotype asymmetry indices (CV
CL and MCA ) were calculated for each of the 14 species. Chromosome data are provided for the first time for S. benthamiana and S. vedranensis, while a new hexaploid cytotype is reported for S. villosa. Five different ploidy levels are detected: diploid, triploid (a single individual of the otherwise diploid S. virens), tetraploid, pentaploid, and hexaploid. Our analyses reveal that polyploids are characterized by a more asymmetric karyotype with respect to diploids. The possible origin of polyploids, and in particular of the cultivated pentaploid S. chamaecyparissus, is briefly discussed. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF
4. Next generation floristics: a workflow to integrate novel methods in traditional floristic research.
- Author
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D'Antraccoli, Marco, Bedini, Gianni, and Peruzzi, Lorenzo
- Subjects
WORKFLOW ,CARTOGRAPHY ,INVENTORIES ,ALGORITHMS ,BOTANY - Abstract
Floristic inventories are crucial for research in botany, but they are still conducted following a purposive approach. To overcome this limitation and move towards a next generation floristics, we propose a workflow, which integrates novel methods and tools in (a) Species-Area Relationship, (b) floristic cartography, and (c) sampling algorithms. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
5. Red list of threatened vascular plants in Italy.
- Author
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Orsenigo, Simone, Fenu, Giuseppe, Gargano, Domenico, Montagnani, Chiara, Abeli, Thomas, Alessandrini, Alessandro, Bacchetta, Gianluigi, Bartolucci, Fabrizio, Carta, Angelino, Castello, Miris, Cogoni, Donatella, Conti, Fabio, Domina, Gianniantonio, Foggi, Bruno, Gennai, Matilde, Gigante, Daniela, Iberite, Mauro, Peruzzi, Lorenzo, Pinna, Maria Silvia, and Prosser, Filippo
- Subjects
ENDANGERED plants ,ENDANGERED species ,COASTAL ecosystem health ,HOUSING development ,ECOSYSTEM services ,VASCULAR plants ,NATIVE plants ,HABITAT modification - Abstract
Italy has a rich natural heritage, which is dangerously under pressure. In recent years, there is an increased awareness of the crucial role of plants in ecosystem functioning and in providing ecosystem services. Consequently, an updated Red List of the Italian vascular flora was compiled in this work, at the request of the Ministry for Environment, Land and Sea Protection, with the scientific support of the Italian Botanical Society. The IUCN Red List criteria were applied to 2,430 Italian native vascular plant taxa to assess their current extinction risk and to highlight the major threats affecting the Italian flora. Our results revealed that 54 taxa (2.2% of the assessed taxa) are extinct or possibly extinct at regional level, while 590 taxa (24.3%) were assigned to a risk category. Moreover, 404 taxa (16.6%) were categorized as Data Deficient. The Italian vascular flora is primarily threatened by habitat modifications due to anthropic disturbance and, especially, to agriculture, tourism and residential development. Coastal areas and lowlands, where anthropogenic impacts and ecosystem destruction are more pronounced, host the greatest number of extinct or declining taxa. Our results represent an important baseline to establish conservation priorities, legislative choices and intervention strategies on a national scale. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
6. Genetic differentiation among populations of the threatened Bellevalia webbiana (Asparagaceae) and its consequence on conservation.
- Author
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Peruzzi, Lorenzo, Astuti, Giovanni, Algisi, Sabrina, and Coppi, Andrea
- Subjects
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POPULATION differentiation , *ASPARAGACEAE , *HUMAN settlements , *CONSERVATION biology , *DNA fingerprinting - Abstract
The narrow central Italian endemic and threatened Webb's hyacinth (Bellevalia webbiana), a perennial herb, is a clear example of a species that has disappeared from several localities due to the development of human settlements. We characterized population genetics of this species to infer possible threats to its viability. We used a dominant DNA fingerprinting approach to infer genetic relationships among the five richest populations known for this species (each with N > 50 individuals). We highlighted phenomena of genetic erosion, with values of intrapopulation-gene-diversity quite similar across all populations (mean value 0.113), but a mean Fst value only slightly below the mean found in other plant species using similar approaches. Despite an overall genetic similarity among populations, a population from Faenza (Emilia-Romagna) is clearly separated from all the others on genetic grounds, and may be defined as an Evolutionarily Significant Unit, worth of special conservation attention. Interestingly, this latter population is also behaving differently from all the others in terms of both vegetative and reproductive functional strategies. Our results highlight the relevance of evolutionary approaches to conservation biology for preserving a genetic diversity linked to local adaptations. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
7. Phytochemical data parallel morpho-colorimetric variation in Polygala flavescens DC.
- Author
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Peruzzi, Lorenzo, Roma-Marzio, Francesco, Dolci, David, Flamini, Guido, Braca, Alessandra, and De Leo, Marinella
- Subjects
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PLANT classification , *BOTANICAL specimens , *COLORIMETRIC analysis , *SUBSPECIES , *BOTANICAL chemistry , *INFORMATION resources , *DENDRITIC cells - Abstract
Phytochemical data, integrated with other sources of information, represent a valuable tool helping to solve different kinds of taxonomic problems in plant systematics. In the present study, a comparative investigation, in order to clarify the systematic relationships of the three subspecies currently recognized within the Italian endemic Polygala flavescens, was carried out. Preliminarily, a morphometric and colorimetric analysis, in order to test the degree of morphological distinctiveness among the taxa, was performed. Then, a phytochemical analysis based both on volatile and non-volatile compounds was obtained. Concerning the morpho-colorimetric analysis, our results confirm most of the characters as useful to discriminate the three subspecies. In addition, some volatile and non-volatile compounds are good taxonomic markers. Morpho-colorimetric variation is clearly paralleled by phytochemical results, confirming the value of this kind of data to infer relationships in plant systematics. Based on these results, we support a taxonomic treatment at subspecific level for the involved taxa. Finally, based on the most significant morphological characters, a revision of herbarium specimens allowed to redefine the distribution pattern of the three subspecies. Accordingly, the range of P. flavescens subsp. maremmana is limited to Mt. Argentario (southern Tuscany) only. A key is also reported for the identification of the three subspecies. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
8. Using scientific names guarantees universality of communication in science... but are plant biologists aware of it?
- Author
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Peruzzi, Lorenzo
- Subjects
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BOTANISTS , *SCIENTIFIC communication , *BOTANY , *BOTANICAL nomenclature , *SCIENTIFIC errors - Abstract
After a survey of 603,637 titles of scientific papers dealing with twenty model and/or crop species, frequent usage of vernacular name-only, of only the abbreviated genus or other errors in indicating the scientific names were observed. A decalogue of golden rules for the 'simple user' of plant nomenclature is proposed. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
9. Phylogenetic measures of biodiversity uncover pteridophyte centres of diversity and hotspots in Tuscany.
- Author
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Carta, Angelino, Pierini, Brunello, Roma-Marzio, Francesco, Bedini, Gianni, and Peruzzi, Lorenzo
- Subjects
PTERIDOPHYTA ,BIODIVERSITY ,PHYLOGENY ,SPECIES diversity ,PLANT species - Abstract
Biodiversity studies traditionally use species as their analysis unit. However, observed biodiversity is not necessarily an indicator of significant biodiversity and therefore, should not be used alone, particularly when the results will be employed for conservation planning. Here, we examine pteridophyte diversity in Tuscany using 4668 geo-referenced pteridophyte records stored in Wikiplantbase #Toscana and calculating standard richness measures and phylogenetic indices; in addition, we assessed the environmental predictors of each diversity metric. Finally, we identified which areas hosting significantly high diversity are not adequately covered by protected areas or intersected by human activities. Although considerable diversity is distributed along Tuscany within areas traditionally recognised as biodiversity hotspots, important areas of diversity are identified only after the application of randomisation tests and through the phylogenetic metrics. Topographic ruggedness resulted the single most important variable predicting high value of all indices; temperature seasonality and temperature continentality resulted the secondary explanatory variables with a significant negative effect on most diversity indices. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
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10. Homoploid hybrid speciation in Doronicum L. (Asteraceae)? Morphological, karyological and molecular evidences.
- Author
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Peruzzi, Lorenzo, Bedini, Gianni, and Andreucci, Andrea
- Subjects
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PLANT hybridization , *BOTANY , *HAPLOTYPES , *ASTERACEAE , *PLANT reproduction , *VEGETATIVE propagation - Abstract
The first unambiguous documentation of hybridism in the genus Doronicum (Senecioneae – Asteraceae) is reported. All our morphological, karyological and molecular data concur to indicate that Doronicum × minutilloi Peruzzi hybr. nov. (2n = 60) is a hybrid growing in Monti Aurunci (Central Italy), originated from the spontaneous crossing D. orientale Hoffm. (2n = 60) × D. columnae Ten. (2n = 60). This new hybrid shows a slightly higher morphological, karyotypic and ribotypic affinity with D. columnae, but shares a trnL-trnF IGS haplotype with D. orientale, and co-occurs with the latter species only; it has reduced fertility and a high potential for vegetative propagation through rhizome fragmentation. Our results led us to suspect in fieri homoploid hybrid speciation. [ABSTRACT FROM PUBLISHER]
- Published
- 2012
- Full Text
- View/download PDF
11. A new species of Linum perenne group (Linaceae) from Calabria (S Italy).
- Author
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Peruzzi, Lorenzo
- Subjects
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LINACEAE , *BIOLOGICAL variation , *LEAF anatomy , *BIOLOGICAL classification - Abstract
A new heterostylous species, Linum katiae, is described from Calabria (southern Italy). This species differs from the closely related Linum alpinum − occurring in Alps and Apennines − by leaf width (3.1 ± 0.5 mm vs. 1.6 ± 0.4 mm), different flower color (bluish-white vs. blue), petals' size (25.8 ± 1.3 mm vs. 16.0 ± 4 mm), sepals' size (9.4 ± 0.7 mm vs. 6.1 ± 1.2 mm), and stigma shape (2.5 vs. 1.4–1.5 length/width ratio). The taxonomic relationships of the new species with Linum perenne group representatives (L. alpinum, Linum austriacum, Linum punctatum) and with other sect. Linum taxa (i.e. Linum narbonense) are discussed. [ABSTRACT FROM PUBLISHER]
- Published
- 2011
- Full Text
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12. A new species of Cardamine subgen. Dentaria ( Cruciferae ), apoendemic in Calabria (Southern Italy).
- Author
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Cesca, Giuliano and Peruzzi, Lorenzo
- Published
- 2002
- Full Text
- View/download PDF
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