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A Gram-stain-positive, aerobic, nonmotile actinobacterium, designated strain YIM 93776 T , was isolated from a saline sediment sample collected from Aiding Lake in Xinjiang Uygur Autonomous Region, Northwest China. Phylogenetic analysis based on the 16S rRNA gene sequences showed that strain YIM 93776 T was affiliated to the genus Glycomyces and was closely related to Glycomyces albus TRM 49136 T (97.6% sequence similarity), Glycomyces lacisalsi XHU 5089 T (97.0%) and Glycomyces anabasis EGI 6500139 T (96.2%). The cell wall contained meso-diaminopimelic acid and the whole-cell hydrolysates sugars were galactose, mannose, arabinase, glucose and ribose. The predominant menaquinones were MK-9 (H 4 ) and MK-10 (H 4 ). Diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, two phosphatidylglyceride, two unidentified phospholipids and two unidentified polar lipids were detected in the polar lipid extracts. Major fatty acids were anteiso-C 17:0 , iso-C 15:0 , iso-C 16:0 , anteiso-C 15:0 and anteiso C 17:1 A. The draft genome sequence of strain YIM 93776 T was 5.37 Mbp in size with 69.5% DNA G + C content. The dDDH and ANI values between strain YIM 93776 T and related neighbours were 25.0-34.3% and 77.3-79.8%, respectively. On the basis of morphological, chemotaxonomic and phylogenetic evidence, strain YIM 93776 T ; therefore, represents a novel species, for which the name Glycomyces salinus sp. nov. is proposed. The type strain is YIM 93776 T (= KCTC 49430 T  = CGMCC 4.7685 T )., (© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

A novel Gram-stain-positive, aerobic, cocci-shaped actinobacterium, designated YIM 75000 T , was isolated from a soil sample collected from a dry-hot river valley in Yunnan Province, P.R. China. Growth was observed at 10-45 °C (optimal 37 °C), 0-8% (w/v) NaCl (optimal at 0-3% NaCl) and pH 6.0-8.0 (optimal at pH 7.3). The peptidoglycan contained LL-diaminopimelic acid, glycine, glutamic acid as well as alanine and its type was A3γ with an LL-Dpm-Gly interpeptide bridge. The major cellular fatty acids (> 10%) were C 16:0 , Summed In Feature 3 (C 16:1 ω6c/C 16:1 ω7c) and C 17:1 ω8c. The predominant menaquinone was MK-9(H 4 ). The major whole-cell sugars contained rhamnose, ribose, arabinose and mannose. The DNA G+C content was 77.0 mol%. The 16S rRNA gene sequence similarities of strain YIM 75000 T with other species were less than 94%. Phylogenetic analyses based on 16S rRNA gene sequences and genome data, revealed that strain YIM 75000 T together with the genus Motilibacter formed a distinct phylogenetic lineage within the phylum Actinobacteria, separating them from members of all orders. Strain YIM 75000 T showed 73.4-73.7% average nucleotide identity and 19.5-19.7% digital DNA-DNA hybridization identity with the closely related genus Motilibacter. Based on the phenotypic, phylogenetic and chemotaxonomic data, it is proposed that the new isolate represents the nomenclature type of the novel species Vallicoccus soli gen. nov., sp. nov. (YIM 75000 T  = DSM 45377 T  = KCTC 49228 T  = CGMCC 1.13844 T ) which is the nomenclature type of the novel genus Vallicoccus gen. nov. within Vallicoccaceae fam. nov and Motilibacterales ord. nov in the phylum Actinobacteria. The family Vallicoccaceae fam. nov. and the order Motilibacterales (contains Vallicoccaceae fam. nov. and Motilibacteraceae Lee 2013) ord. nov. are formally proposed.

A novel halophilic actinobacterial strain, designated YIM 96934 T , was isolated from a soil sample collected from the edge of a saline lake in Xinjiang, north-west China. The taxonomic position of the strain was investigated using a polyphasic approach. Cells of the strain were aerobic and Gram-stain-positive. On the basis of 16S rRNA gene sequence analysis, strain YIM 96934 T was related most closely to type strains of the genus Phytoactinopolyspora, and shared highest sequence similarity with Phytoactinopolyspora endophytica EGI 60009 T (94.7 %), Phytoactinopolyspora alkaliphila EGI 80629 T (94.5 %) and Phytoactinopolyspora halotolerans YIM 96448 T (94.1 %). Optimum growth of the strain was observed at 28-37 °C (range 15-45 °C), pH 7.0-8.0 (6.0-9.0) and 5-8 % (w/v) NaCl (2-24 %). The major isoprenoid quinone was MK-9(H4). The whole-cell sugars were glucose, galactose, mannose and rhamnose. The diagnostic diamino acid was ll-diaminopimelic acid. The polar lipid profile was found to consist of diphosphatidylglycerol, four unidentified phospholipids, three unidentified phosphoglycolipids, an unidentified aminophospholipid, two phosphatidylinositol mannosides and an unidentified polar lipid. The major fatty acids were anteiso-C15 : 0, iso-C16 : 0, iso-C17 : 0, anteiso-C17 : 0 and summed feature 4 (iso-C17 : 1 I and/or anteiso-C17 : 1 B). The DNA G+C content was 66.6 mol%. On the basis of phenotypic, genotypic and phylogenetic data, a novel species, Phytoactinopolyspora halophila sp. nov., is proposed. The type strain is YIM 96934 T (=KCTC 39926 T =CCTCC AB 2017057 T ).

A novel aerobic, Gram-positive, non-motile halotolerant actinobacterium, designated strain YIM 96448 T , was isolated from a saline soil sample collected from the south bank of Aiding Lake in Xinjiang Province, northwest China. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain YIM 96448 T is closely related to Phytoactinopolyspora endophytica EGI 60009 T (98.0%) and Phytoactinopolyspora alkaliphila EGI 80629 T (97.0%). Optimum growth of the strain was observed at 28-37 °C, pH 7-9 and in the presence of 5-8% NaCl (w/v). The respiratory quinone of strain YIM 96448 T was determined to be MK-9(H 4 ). The major fatty acids (>10%) were identified as anteiso-C 15:0 , iso-C 16:0 , anteiso-C 17:0 and summed feature 4 (iso-C 17:1 I and/or anteiso-C 17:1 B). The polar lipid profile was found to consist of diphosphatidylglycerol, an unidentified aminophospholipid, phosphatidylglycerol, two phosphatidylinositol mannosides, three unidentified phosphoglycolipids and four unidentified phospholipids. The DNA G+C content was determined to be 68.7 mol%. On the basis of phenotypic, chemotaxonomic and phylogenetic analysis, strain YIM 96448 T should be classified as a novel species in the genus Phytoactinopolyspora, for which the name Phytoactinopolyspora halotolerans sp. nov. is proposed. The type strain is YIM 96448 T (=CCTCC AB 2017055 T  = KCTC 39924 T ).

A Gram-positive, facultative anaerobe microorganism, designated YIM 93067(T), was isolated from a salt lake in Xinjiang Province of China and subjected to a polyphasic taxonomic study. Strain YIM 93067(T) grew at 5-40 °C, 0-8.0 % (w/v) NaCl and pH 7.0-9.0. Phylogenetic analyses based on 16S rRNA gene sequences revealed that the organism belongs to the genus Jonesia and exhibited a sequence similarity of 98.8 % to the closely related type strain Jonesia quinghaiensis DSM 15701(T). The predominant menaquinone was MK-9 and the major fatty acids were anteiso-C15:0 and C16:0. The polar lipids consisted of diphosphatidylglycerol, glycolipid, phosphatidylglycerol, phosphatidylinositol, phosphatidylinositol mannoside and one unidentified phospholipid. The G+C content of the genomic DNA was 57.4 mol%. Based on the results of phylogenetic, physiological and chemotaxonomic comparative analyses, the isolate is assigned to a novel species of the genus Jonesia, for which the name Jonesia luteola sp. nov. is proposed, with the type strain YIM 93067(T) (=DSM 21367(T) = CCTCC AB 2014350(T)).

A Gram-positive, aerobic, nonmotile actinomycete strain designated DRQ-2(T) was isolated from the soil sample collected from lime-stone open pit mine from the Gulbarga region, Karnataka province, India. Strain DRQ-2(T) was identified as a member of the genus Nonomuraea by a polyphasic approach. Strain DRQ-2(T) could be differentiated from other members of the genus Nonomuraea on the basis of physiology and 16S rRNA gene sequence analysis. The 16S rRNA gene sequence similarity of strain DRQ-2(T) showed highest sequence similarity to Nonomuraea muscovyensis DSM 45913(T) (99.1%), N. salmonea DSM 43678(T) (98.2%) and N. maheshkhaliensis JCM 13929(T) with 98.0%, respectively. Chemotaxonomic properties showing predominant menaquinones of MK-9 (H4), MK-9(H2) and MK-9(H6), major polar lipids comprised diphosphatidylglycerol, phosphatidylmono methyl ethanolamine (PME), phosphatidylethanolamine (PE), hydroxy-PME (OH-PME), hydroxy PE (OH-PEE), phosphatidylglycerol (PG), ninhydrin-positive phosphoglycolipid and unknown phospholipid, fatty acids with major amounts of i-C16:0, ai-C15:0 and ai-C17:0 supported allocation of the strain to the genus Nonomuraea. Results of DNA-DNA hybridization and physiological tests allowed genotypic and phenotypic differentiation of strain DRQ-2(T) from closely related species. The genomic DNA G+C content of the organism was 72.5 mol%. On the basis of phenotypic, chemotypic and molecular characteristics, strain DRQ-2(T) represents a novel species of the genus Nonomuraea, for which the name N. indica sp. nov. is proposed, with type strain DRQ-2(T) (=NCIM 5480(T)= CCTCC AA 209050(T)).

The genus Nocardiopsis, a widespread group in phylum Actinobacteria, has received much attention owing to its ecological versatility, pathogenicity, and ability to produce a rich array of bioactive metabolites. Its high environmental adaptability might be attributable to its genome dynamics, which can be estimated through comparative genomic analysis targeting microorganisms with close phylogenetic relationships but different phenotypes. To shed light on speciation, gene content evolution, and environmental adaptation in these unique actinobacteria, we sequenced draft genomes for 16 representative species of the genus and compared them with that of the type species N. dassonvillei subsp. dassonvillei DSM 43111(T). The core genome of 1,993 orthologous and paralogous gene clusters was identified, and the pan-genomic reservoir was found not only to accommodate more than 22,000 genes, but also to be open. The top ten paralogous genes in terms of copy number could be referred to three functional categories: transcription regulators, transporters, and synthases related to bioactive metabolites. Based on phylogenomic reconstruction, we inferred past evolutionary events, such as gene gains and losses, and identified a list of clade-specific genes implicated in environmental adaptation. These results provided insights into the genetic causes of environmental adaptability in this cosmopolitan actinobacterial group and the contributions made by its inherent features, including genome dynamics and the constituents of core and accessory proteins.

A halotolerant actinomycete strain, designated XHU 5031(T), was isolated from a salt lake in Xinjiang Province, northwest China. Its taxonomic status was determined using a polyphasic approach. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the organism was most closely related to Myceligenerans xiligouense DSM 15700(T) (98.4 %), Myceligenerans halotolerans XJEEM 11063(T) (98.0 %) and Myceligenerans crystallogenes DSM 17134(T) (97.5 %). However, it had relatively low values for DNA-DNA relatedness with the above strains (46.2, 39.4 and 36.5 %, respectively). The peptidoglycan type was A4α. This organism contained glucose, mannose and galactose as the major whole cell sugars. The predominant menaquinone was MK-9(H(4)). The major fatty acids were iso-C(15:0,) anteiso-C(15:0) and iso-C(16:0). The polar lipids detected were diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), phosphatidylinositol (PI), one unknown phospholipid (PL) and two unknown glycolipids (GL). The G+C content of genomic DNA was 71.2 mol %. Phenotypic data clearly distinguished the isolate from its closest relatives. The combined genotypic and phenotypic data indicated that the isolate XHU 5031(T) represented a novel species of the genus Myceligenerans. The proposed name for this organism is Myceligenerans salitolerans sp. nov., with type strain XHU 5031(T) (=KCTC 29128(T) = CCTCC AB 2012908(T)).

Our current natural product program utilizes new actinomycetes originating from unexplored and underexplored ecological niches, employing cytotoxicity against a selected panel of cancer cell lines as the preliminary screen to identify hit strains for natural product dereplication, followed by mechanism-based assays of the purified natural products to discover potential anticancer drug leads. Three new linear polyketides, actinopolysporins A (1), B (2), and C (3), along with the known antineoplastic antibiotic tubercidin (4), were isolated from the halophilic actinomycete Actinopolyspora erythraea YIM 90600, and the structures of the new compounds were elucidated on the basis of spectroscopic data interpretation. All four compounds were assayed for their ability to stabilize the tumor suppressor programmed cell death protein 4 (Pdcd4), which is known to antagonize critical events in oncogenic pathways. Only 4 significantly inhibited proteasomal degradation of a model Pdcd4-luciferase fusion protein, with an IC50 of 0.88±0.09 μM, unveiling a novel biological activity for this well-studied natural product.

A Gram-staining-positive, facultatively anaerobic, non-motile and moderately halophilic actinobacterium, designated YIM 93306(T), was isolated from a salt lake in Xinjiang province, north-west China, and subjected to a polyphasic taxonomic study. Strain YIM 93306(T) grew in the presence of 2-16 % (w/v) NaCl and did not grow without NaCl. The peptidoglycan type was A4alpha with an l-Lys-l-Glu interpeptide bridge. The whole-cell sugars were glucosamine, arabinose, mannose and two unknown sugars. The predominant menaquinone was MK-8(H(4)). The major fatty acids were iso-C(15 : 0), anteiso-C(15 : 0) and anteiso-C(17 : 0). The polar lipids comprised diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, one unknown phosphoglycolipid and one unknown phospholipid. The DNA G+C content was 68.3 mol%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain YIM 93306(T) fell within the radius of the suborder Micrococcineae. Its closest phylogenetic neighbour was the type strain of Ruania albidiflava (AS 4.3142(T); 96.2 % 16S rRNA gene sequence similarity), the sole recognized species of the genus Ruania. Sequence similarities between strain YIM 93306(T) and members of other genera of the suborder Micrococcineae were <95.2 %. On the basis of phylogenetic analysis, phenotypic characteristics and chemotaxonomic differences, a novel genus and species, Haloactinobacterium album gen. nov., sp. nov., is proposed. The type strain of the species is YIM 93306(T) (=DSM 21368(T) =KCTC 19413(T) =CCTCC AB 208069(T)). Based on phylogenetic characteristics and 16S rRNA gene signature nucleotide patterns, the genera Ruania and Haloactinobacterium gen. nov. are proposed to belong to a novel family, Ruaniaceae fam. nov.

A Gram-stain-positive actinobacterium, designated strain YIM 93316(T), was isolated from a salt lake in Xinjiang Province, north-west China, and was subjected to a polyphasic taxonomic study. The isolate grew at 10-45 degrees C, at pH 6-9 and in the presence of 1-15 % (w/v) NaCl, but no growth was observed in the absence of NaCl. The cell-wall diamino acid contained alanine, glutamine and lysine with peptidoglycan type A4alpha. Polar lipids contained diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, phosphatidylinositol mannosides, an unknown glycolipid and an unknown phospholipid. The predominant menaquinone was MK-8(H(4)). The major fatty acids were anteiso-C(15 : 0) and anteiso-C(15 : 1). The DNA G+C content of strain YIM 93316(T) was 70.1 mol%. Chemotaxonomic properties supported the affiliation of strain YIM 93316(T) to the genus Georgenia, and this was supported by phylogenetic analysis based on 16S rRNA gene sequences. Levels of 16S rRNA gene sequence similarity between strain YIM 93316(T) and Georgenia thermotolerans TT02-04(T), Georgenia ruanii YIM 004(T) and Georgenia muralis 1A-C(T) were 96.6, 96.5 and 96.3 %, respectively. Data from fatty acid, physiological and biochemical tests allowed the clear phenotypic differentiation of strain YIM 93316(T) from recognized members of the genus Georgenia. On the basis of evidence from the present polyphasic study, strain YIM 93316(T) is considered to represent a novel species of the genus Georgenia, for which the name Georgenia halophila sp. nov. is proposed. The type strain is YIM 93316(T) (=DSM 21365(T) =CCTCC AB 208144(T)).

A Gram-stain-positive, coccoid, non-motile, halotolerant actinobacterium, designated YIM 45900(T), was found as a contaminant on an agar plate in the laboratory of Yunnan Institute of Microbiology, China. The peptidoglycan type was A4alpha with an (L)-Lys-(L)-Ser-(D)-Asp interpeptide bridge. The cell-wall sugars contained galactose and fucose. The predominant menaquinone was MK-8(H(4)). The major fatty acids were iso-C(15 : 0), anteiso-C(15 : 0) and anteiso-C(17 : 0). The polar lipids contained diphosphatidylglycerol, phosphatidylinositol, a glucosamine-containing phospholipid and an unknown phospholipid. The DNA G+C content was 65.8 mol%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the organism falls within the radius of the suborder Micrococcineae and its closest phylogenetic neighbours are the genera of the family Dermacoccaceae. Strain YIM 45900(T) showed 16S rRNA gene sequences similarity values of 93.1-95.9 % with members of the genera Dermacoccus, Demetria and Kytococcus. On the basis of the phylogenetic and phenotypic characteristics of the actinobacterium, a novel genus and species, Yimella lutea gen. nov., sp. nov., are proposed. The type strain of Yimella lutea is YIM 45900(T) (=DSM 19828(T) =KCTC 19231(T) =CCTCC AB 207007(T)).

The genera Actinopolyspora and Streptomonospora are two groups of extremely halophilic filamentous actinomycetes. Members of these two genera are isolated frequently, probably due to the high occurrence of these actinomycetes in the hypersaline soil environment. Although members of these genera can be identified by micromorphological criteria, the extensive chemotaxonomic characterization of each new isolates is a time-consuming task which cannot always be undertaken when handling large numbers of isolates as is the case in natural products screening programmes. In this work, the design of one set of genus-specific PCR primers which allows rapid detection of members of the genus Actinopolyspora by means of PCR amplification is presented. And we developed a multiplex PCR protocol for identification of the species of the genera Actinopolyspora and Streptomonospora, simultaneously.

Actinomycetes have been attached a great attention owing to these microorganisms product various natural compounds and have special mechanism of adapting extreme environments. But the research work on actinomycetes under extreme environments is few. Soil and sediment samples were collected from saline and alkaline soil and lakes in Xinjiang, Qinghai Province, P. R. China and Egypt. Diversity and some biological characteristics of Actinomycete were studied by using cultivation and DGGE methods. Results showed that large amount of unknown microorganisms exist in the salt lake Chaka, isolated strains account for only a small portion of species diversity. Designing new strategies for isolation of as yet uncultured microorganisms from natural extreme environments is the key step to exploit microbial resources. The 87% of alkalophilic or alkalinetolerant actinomycete strains were able to grow at pH 6.0 - 12.0. 14 strains grow well at pH 8.5 - 11.5, but not at pH 7.0. 34 halotolerant actinomycete cab grow in 15% - 20% NaCl. Based on the study of the halophilic and halotolerant actinomycetes isolated from the saline and the alkaline soils collected from Xinjiang and Qinghai Province, China, we can conclude that the relationship of actinomycetes (especially halophilic actinomycetes strains) to positive ions such as Na+, K+ and Mg2+ is very complex, and there were sodiumphilic, kaliumphilic, magnesiumphilic, and calciumphilici actinomycete strains. One new family, eight new genera and more than 30 new species of halophilic and alkalophilic actinomycetes were fund. Many strains with PKS genes were selected. We believe based on the research results that there is a very high density of new or unknown actinomycete resources in these areas in China and Egypt.

Several groups of bacteria have complex life cycles involving cellular differentiation and multicellular structures. For example, actinobacteria of the genus Streptomyces form multicellular vegetative hyphae, aerial hyphae, and spores. However, similar life cycles have not yet been described for archaea. Here, we show that several haloarchaea of the family Halobacteriaceae display a life cycle resembling that of Streptomyces bacteria. Strain YIM 93972 (isolated from a salt marsh) undergoes cellular differentiation into mycelia and spores. Other closely related strains are also able to form mycelia, and comparative genomic analyses point to gene signatures (apparent gain or loss of certain genes) that are shared by members of this clade within the Halobacteriaceae. Genomic, transcriptomic and proteomic analyses of non-differentiating mutants suggest that a Cdc48-family ATPase might be involved in cellular differentiation in strain YIM 93972. Additionally, a gene encoding a putative oligopeptide transporter from YIM 93972 can restore the ability to form hyphae in a Streptomyces coelicolor mutant that carries a deletion in a homologous gene cluster (bldKA-bldKE), suggesting functional equivalence. We propose strain YIM 93972 as representative of a new species in a new genus within the family Halobacteriaceae, for which the name Actinoarchaeum halophilum gen. nov., sp. nov. is herewith proposed. Our demonstration of a complex life cycle in a group of haloarchaea adds a new dimension to our understanding of the biological diversity and environmental adaptation of archaea. Bacteria of the genus Streptomyces have complex life cycles involving cellular differentiation and multicellular structures that have never been observed in archaea. Here, the authors show that several halophilic archaea display a life cycle resembling that of Streptomyces bacteria, undergoing cellular differentiation into mycelia and spores. [ABSTRACT FROM AUTHOR]

A novel actinomycete strain, designated XHU 5301, was isolated from a hypersaline habitat, China. The strain was aerobic, Gram-stain positive and the optimum NaCl concentration for growth was 7-9% (w/v). Phylogenetic analysis based on an almost-complete 16S rRNA gene sequence of strain XHU 5301 showed that the organism was most closely related to Glycomyces halotolerans TRM 40137 (96.0%). The whole-cell sugar pattern consisted of glucose and galactose. The predominant menaquinone was MK-10(H), MK-10(H), and MK-9(H). The major fatty acids were anteiso-C, iso-C, iso-C and methyl-C. The polar lipids consist of diphosphatidylglycerol, phosphatidylglycerol, and one unknown phospholipid. The G+C content of the genomic DNA was 72.5 mol %. The novel species Glycomyces xinjiangensis sp. nov. was proposed, with strain XHU 5301 (=CCTCC AA 2016043 =KCTC 39689) as the type strain of Glycomyces xinjiangensis. [ABSTRACT FROM AUTHOR]

: The genus Nocardiopsis, a widespread group in phylum Actinobacteria, has received much attention owing to its ecological versatility, pathogenicity, and ability to produce a rich array of bioactive metabolites. Its high environmental adaptability might be attributable to its genome dynamics, which can be estimated through comparative genomic analysis targeting microorganisms with close phylogenetic relationships but different phenotypes. To shed light on speciation, gene content evolution, and environmental adaptation in these unique actinobacteria, we sequenced draft genomes for 16 representative species of the genus and compared them with that of the type species N. dassonvillei subsp. dassonvillei DSM 43111T. The core genome of 1,993 orthologous and paralogous gene clusters was identified, and the pan-genomic reservoir was found not only to accommodate more than 22,000 genes, but also to be open. The top ten paralogous genes in terms of copy number could be referred to three functional categories: transcription regulators, transporters, and synthases related to bioactive metabolites. Based on phylogenomic reconstruction, we inferred past evolutionary events, such as gene gains and losses, and identified a list of clade-specific genes implicated in environmental adaptation. These results provided insights into the genetic causes of environmental adaptability in this cosmopolitan actinobacterial group and the contributions made by its inherent features, including genome dynamics and the constituents of core and accessory proteins. [ABSTRACT FROM AUTHOR]

Abstract: An actinobacterial strain YIM 80766T was isolated from a soil sample collected from the eastern desert of Egypt, and its taxonomic position was investigated by a polyphasic approach. The organism was found to have a range of chemical and morphological properties consistent with its classification in the genus Dietzia. Phylogenetic analysis indicated that the levels of 16S rRNA gene sequence similarity between strain YIM 80766T and the other type strains of recognized members of the genus Dietzia were 97.0–98.9%. However, DNA–DNA hybridization values and phenotypic characteristics revealed that the strain differed from the currently recognized species of the genus Dietzia. Therefore, strain YIM 80766T represents a novel species of the genus Dietzia, for which the name Dietzia lutea sp. nov. is proposed. The type strain is YIM 80766T (=KCTC 19232T=DSM 45074T=CCTCC AA 207008T). The 16S rRNA gene sequence of strain YIM 80766T has been deposited in GenBank under the accession number EU821598. [Copyright &y& Elsevier]