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1 / 1022

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[PMID]: 29381713 [Au] Autor: Nishida A; Thiel V; Nakagawa M; Ayukawa S; Yamamura M [Ad] Endereço: Department of Computational Intelligence and Systems Science, Tokyo Institute of Technology, Kanagawa, Japan. [Ti] Título: Effect of light wavelength on hot spring microbial mat biodiversity. [So] Source: PLoS One;13(1):e0191650, 2018. [Is] ISSN: 1932-6203 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Hot spring associated phototrophic microbial mats are purely microbial communities, in which phototrophic bacteria function as primary producers and thus shape the community. The microbial mats at Nakabusa hot springs in Japan harbor diverse photosynthetic bacteria, mainly Thermosynechococcus, Chloroflexus, and Roseiflexus, which use light of different wavelength for energy conversion. The aim of this study was to investigate the effect of the phototrophs on biodiversity and community composition in hot spring microbial mats. For this, we specifically activated the different phototrophs by irradiating the mats with different wavelengths in situ. We used 625, 730, and 890 nm wavelength LEDs alone or in combination and confirmed the hypothesized increase in relative abundance of different phototrophs by 16S rRNA gene sequencing. In addition to the increase of the targeted phototrophs, we studied the effect of the different treatments on chemotrophic members. The specific activation of Thermosynechococcus led to increased abundance of several other bacteria, whereas wavelengths specific to Chloroflexus and Roseiflexus induced a decrease in >50% of the community members as compared to the dark conditions. This suggests that the growth of Thermosynechococcus at the surface layer benefits many community members, whereas less benefit is obtained from an increase in filamentous anoxygenic phototrophs Chloroflexus and Roseiflexus. The increases in relative abundance of chemotrophs under different light conditions suggest a relationship between the two groups. Aerobic chemoheterotrophs such as Thermus sp. and Meiothermus sp. are thought to benefit from aerobic conditions and organic carbon in the form of photosynthates by Thermosynechococcus, while the oxidation of sulfide and production of elemental sulfur by filamentous anoxygenic phototrophs benefit the sulfur-disproportionating Caldimicrobium thiodismutans. In this study, we used an experimental approach under controlled environmental conditions for the analysis of natural microbial communities, which proved to be a powerful tool to study interspecies relationships in the microbiome. [Mh] Termos MeSH primário: Biodiversidade Fontes Termais/microbiologia Luz [Mh] Termos MeSH secundário: Reação em Cadeia da Polimerase RNA Ribossômico 16S/genética [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Nm] Nome de substância: 0 (RNA, Ribosomal, 16S) [Em] Mês de entrada: 1803 [Cu] Atualização por classe: 180309 [Lr] Data última revisão: 180309 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 180131 [St] Status: MEDLINE [do] DOI: 10.1371/journal.pone.0191650

2 / 1022

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[PMID]: 29458537 [Au] Autor: Frolov EN; Zayulina KS; Kopitsyn DS; Kublanov IV; Bonch-Osmolovskaya EA; Chernyh NA [Ad] Endereço: 1​Winogradsky Institute of Microbiology, Research Centre of Biotechnology RAS, 33-2 Leninsky prospect, 119071, Moscow, Russia. [Ti] Título: Desulfothermobacter acidiphilus gen. nov., sp. nov., a thermoacidophilic sulfate-reducing bacterium isolated from a terrestrial hot spring. [So] Source: Int J Syst Evol Microbiol;68(3):871-875, 2018 Mar. [Is] ISSN: 1466-5034 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: An anaerobic sulfate-reducing micro-organism, strain 3408-1 , was isolated from a terrestrial hot spring in Kamchatka peninsula (Russia). The cells were spore-forming rods with a Gram-positive type of cell wall. The new isolate was a moderately thermoacidophilic anaerobe able to grow either by sulfate or thiosulfate respiration with H2 or formate as substrates, or by fermenting yeast extract, maltose, sucrose, glucose and pyruvate. The fermentation products were acetate, CO2 and H2. The pH range for growth was 2.9-6.5, with an optimum at 4.5. The temperature range for growth was 42-70 °C, with an optimum at 55 °C. The G+C content of DNA was 58 mol%. Phylogenetic analysis of the 16S rRNA gene showed that strain 3408-1 belongs to the family Thermoanaerobacteraceae, order Thermoanaerobacterales and was distantly related to the species of the genus Ammonifex(93-94 % sequence similarity). On the basis of physiological properties and results of phylogenetic analysis, strain 3408-1 is considered to represent a novel species of a new genus, for which the name Desulfothermobacter acidiphilus gen. nov., sp. nov. is proposed. The type strain is 3408-1 (=DSM 105356 =VKM B-3183 ). [Mh] Termos MeSH primário: Firmicutes/classificação Fontes Termais/microbiologia Filogenia [Mh] Termos MeSH secundário: Técnicas de Tipagem Bacteriana Composição de Bases DNA Bacteriano/genética Ácidos Graxos/química Fermentação Firmicutes/genética Firmicutes/isolamento & purificação Oxirredução RNA Ribossômico 16S/genética Federação Russa Análise de Sequência de DNA Sulfatos/metabolismo [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (Fatty Acids); 0 (RNA, Ribosomal, 16S); 0 (Sulfates) [Em] Mês de entrada: 1803 [Cu] Atualização por classe: 180308 [Lr] Data última revisão: 180308 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 180221 [St] Status: MEDLINE [do] DOI: 10.1099/ijsem.0.002599

3 / 1022

MEDLINE

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[PMID]: 29394011 [Au] Autor: Saladino R; Chiocchini U; Botta G; Delfino M; Conigliaro R; Mosesso P [Ti] Título: Free radical scavenging capacity and protective effect of natural substances in peloids from the thermal spring pool Bagnaccio (Viterbo, Italy). [So] Source: J Cosmet Sci;67(2):71-92, 2016 Mar-Apr. [Is] ISSN: 1525-7886 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Natural peloids from sulfurous thermal springs are largely used in cosmetic and pelotherapy for the treatment of different dermatological conditions, including skin aging, dermatitis, and other eczemas. The beneficial effects are correlated to mineralogical and other thermal properties, as well as to the presence of natural substances with specific antioxidant activity. Few data are available for the comparison between natural peloids and synthetic (i.e., artificially maturated) muds. In this context, the natural substances and antioxidant activity of natural white mud (WM) and dark mud (DM) peloids from the sulfurous thermal spring pool Bagnaccio (Viterbo, Italy) have been studied in detail to evaluate possible relationships between physicochemical properties and therapeutic effect. A large panel of natural substances in WM and DM were characterized for the first time by ³¹P-nuclear magnetic resonance and gas chromatography associated to mass spectrometry analysis. Polar fractions of WM and DM peloids were characterized by the presence of several bioactive natural compounds, showing high antioxidant activity and DNA protective effect, as evaluated by 2,2-diphenyl-1-picrylhydrazyl assay, and hydrogen peroxide­induced DNA breakage in the alkaline comet assay. The antioxidant activity and DNA protective effect could be attributed to radical scavenging rather than a modulatory effect on the induced DNA repair, and are of order of intensity higher than that reported for synthetic muds. [Mh] Termos MeSH primário: Alcaloides/farmacologia Depuradores de Radicais Livres/farmacologia Hidrocarbonetos Aromáticos/farmacologia Fenóis/farmacologia Terpenos/farmacologia [Mh] Termos MeSH secundário: Alcaloides/química Alcaloides/isolamento & purificação Alcanos/química Alcanos/isolamento & purificação Alcanos/farmacologia Alcenos/química Alcenos/isolamento & purificação Alcenos/farmacologia Animais Compostos de Bifenilo/antagonistas & inibidores Compostos de Bifenilo/química Células CHO Linhagem Celular Tumoral Sobrevivência Celular/efeitos dos fármacos Ensaio Cometa Cricetulus DNA/efeitos dos fármacos Depuradores de Radicais Livres/química Depuradores de Radicais Livres/isolamento & purificação Fontes Termais Seres Humanos Hidrocarbonetos Aromáticos/química Hidrocarbonetos Aromáticos/isolamento & purificação Peróxido de Hidrogênio/antagonistas & inibidores Peróxido de Hidrogênio/química Itália Espectroscopia de Ressonância Magnética Camundongos Terapia por Lama Fenóis/química Fenóis/isolamento & purificação Picratos/antagonistas & inibidores Picratos/química Terpenos/química Terpenos/isolamento & purificação [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Alkaloids); 0 (Alkanes); 0 (Alkenes); 0 (Biphenyl Compounds); 0 (Free Radical Scavengers); 0 (Hydrocarbons, Aromatic); 0 (Phenols); 0 (Picrates); 0 (Terpenes); 9007-49-2 (DNA); BBX060AN9V (Hydrogen Peroxide); DFD3H4VGDH (1,1-diphenyl-2-picrylhydrazyl) [Em] Mês de entrada: 1802 [Cu] Atualização por classe: 180222 [Lr] Data última revisão: 180222 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 180203 [St] Status: MEDLINE

4 / 1022

MEDLINE

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[PMID]: 28464816 [Au] Autor: Shahinyan G; Margaryan A; Panosyan H; Trchounian A [Ad] Endereço: Research Institute of Biology, Yerevan State University, 0025, Yerevan, Armenia. [Ti] Título: Identification and sequence analyses of novel lipase encoding novel thermophillic bacilli isolated from Armenian geothermal springs. [So] Source: BMC Microbiol;17(1):103, 2017 05 02. [Is] ISSN: 1471-2180 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: BACKGROUND: Among the huge diversity of thermophilic bacteria mainly bacilli have been reported as active thermostable lipase producers. Geothermal springs serve as the main source for isolation of thermostable lipase producing bacilli. Thermostable lipolytic enzymes, functioning in the harsh conditions, have promising applications in processing of organic chemicals, detergent formulation, synthesis of biosurfactants, pharmaceutical processing etc. RESULTS: In order to study the distribution of lipase-producing thermophilic bacilli and their specific lipase protein primary structures, three lipase producers from different genera were isolated from mesothermal (27.5-70 °C) springs distributed on the territory of Armenia and Nagorno Karabakh. Based on phenotypic characteristics and 16S rRNA gene sequencing the isolates were identified as Geobacillus sp., Bacillus licheniformis and Anoxibacillus flavithermus strains. The lipase genes of isolates were sequenced by using initially designed primer sets. Multiple alignments generated from primary structures of the lipase proteins and annotated lipase protein sequences, conserved regions analysis and amino acid composition have illustrated the similarity (98-99%) of the lipases with true lipases (family I) and GDSL esterase family (family II). A conserved sequence block that determines the thermostability has been identified in the multiple alignments of the lipase proteins. CONCLUSIONS: The results are spreading light on the lipase producing bacilli distribution in geothermal springs in Armenia and Nagorno Karabakh. Newly isolated bacilli strains could be prospective source for thermostable lipases and their genes. [Mh] Termos MeSH primário: Bacillus/enzimologia Bacillus/isolamento & purificação Proteínas de Bactérias/química Proteínas de Bactérias/isolamento & purificação Fontes Termais/microbiologia Lipase/química Lipase/isolamento & purificação Análise de Sequência [Mh] Termos MeSH secundário: Sequência de Aminoácidos Armênia Bacillus/genética Proteínas de Bactérias/classificação Proteínas de Bactérias/genética Estabilidade Enzimática Esterases Temperatura Alta Concentração de Íons de Hidrogênio Lipase/classificação Lipase/genética Fenótipo Filogenia RNA Ribossômico 16S/genética Alinhamento de Sequência Especificidade por Substrato [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Nm] Nome de substância: 0 (Bacterial Proteins); 0 (RNA, Ribosomal, 16S); EC 3.1.- (Esterases); EC 3.1.1.3 (Lipase); EC 3.1.1.3 (thermostable lipase) [Em] Mês de entrada: 1711 [Cu] Atualização por classe: 171220 [Lr] Data última revisão: 171220 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170504 [St] Status: MEDLINE [do] DOI: 10.1186/s12866-017-1016-4

5 / 1022

MEDLINE

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[PMID]: 28901905 [Au] Autor: Lin SY; Hameed A; Wen CZ; Hsu YH; Liu YC; Lai WA; Young CC [Ad] Endereço: 1​Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC. [Ti] Título: Hydrogenophaga aquatica sp. nov., isolated from a hot spring. [So] Source: Int J Syst Evol Microbiol;67(10):3716-3721, 2017 Oct. [Is] ISSN: 1466-5034 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: A polyphasic approach was used to characterize an aerobic, Gram-negative, rod-shaped bacterium (designated strain CC-KL-3 ) isolated from a hot spring. Phylogenetic analyses based on 16S rRNA genes indicated that strain CC-KL-3 showed highest sequence similarity to Hydrogenophaga bisanensis (97.7 %) and Hydrogenophaga atypica (97.6 %) and lower sequence similarity to other species (less than 97.6 %). The levels of DNA-DNA relatedness between strain CC-KL-3 , H. bisanensis and H. atypica were estimated to be 13.0 and 8.7 % (the reciprocal value was 14.7 and 6.3 %). Strain CC-KL-3 was non-motile, without apparent flagella and able to grow between 15-42 °C (optimal 30 °Ð¡), pH 6.0-8.0 (optimal 7.0) and 0-2 % (w/v) NaCl (optimal 0 %). The DNA G+C content was 61.4 mol% and the major quinone system was ubiquinone (Q-8). The polyamine profile revealed the predominance of 2-hydroxyputrescine and putrescine and the dominant cellular fatty acids were C16 : 0 (28.9 %), C16 : 1ω7c/C16 : 1ω6c (41.4 %) and C18 : 1ω7c/C18 : 1ω6c (11.9 %). These data corroborated the affiliation of strain CC-KL-3 to the genus Hydrogenophaga. Based on the distinct phylogenetic, phenotypic and chemotaxonomic traits, and the results of comparative 16S rRNA gene sequence analysis, strain CC-KL-3 is considered to represent a novel species of the genus Hydrogenophaga, affiliated to the family Comamonadaceae, for which the name Hydrogenophaga aquatica sp. nov. is proposed. The type strain is CC-KL-3 (=BCRC 80937 =JCM 31216 ). [Mh] Termos MeSH primário: Comamonadaceae/classificação Fontes Termais/microbiologia Filogenia [Mh] Termos MeSH secundário: Técnicas de Tipagem Bacteriana Composição de Bases Comamonadaceae/genética Comamonadaceae/isolamento & purificação DNA Bacteriano/genética Ácidos Graxos/química Hibridização de Ácido Nucleico Putrescina/análogos & derivados Putrescina/química RNA Ribossômico 16S/genética Análise de Sequência de DNA Taiwan Ubiquinona/química [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (Fatty Acids); 0 (RNA, Ribosomal, 16S); 1339-63-5 (Ubiquinone); 539-59-3 (2-hydroxyputrescine); CQA993F7P8 (ubiquinone 8); V10TVZ52E4 (Putrescine) [Em] Mês de entrada: 1710 [Cu] Atualização por classe: 171027 [Lr] Data última revisão: 171027 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170914 [St] Status: MEDLINE [do] DOI: 10.1099/ijsem.0.002146

6 / 1022

MEDLINE

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[PMID]: 28875900 [Au] Autor: Kojima H; Watanabe M; Fukui M [Ad] Endereço: 1​The Institute of Low Temperature Science, Hokkaido University, Kita-19, Nishi-8, Kita-ku, Sapporo 060-0819, Japan. [Ti] Título: Sulfurivermis fontis gen. nov., sp. nov., a sulfur-oxidizing autotroph, and proposal of Thioprofundaceae fam. nov. [So] Source: Int J Syst Evol Microbiol;67(9):3458-3461, 2017 Sep. [Is] ISSN: 1466-5034 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: A novel Gram-stain-negative, chemolithoautotrophic sulfur oxidizer, strain JG42T, was isolated from a hot spring microbial mat. As an electron donor for autotrophic growth, strain JG42T utilized sulfide, thiosulfate, tetrathionate and elemental sulfur. Cells of strain JG42T were oxidase-positive and catalase-negative. The G+C content of the genomic DNA was 65 mol%. The predominant cellular fatty acid was C16 : 0. Phylogenetic analysis of the 16S rRNA gene indicated that strain JG42T belonged to the order Chromatiales, but sequence similarities to the known species were less than 94 %. On the basis of its properties, strain JG42T (=DSM 104776T=NBRC 112696T) is proposed as the type strain of a novel species of a new genus, Sulfurivermis fontis gen. nov., sp. nov., which belongs to the family Thioalkalispiraceae. A new family, Thioprofundaceae fam. nov., is also proposed to accommodate the genus Thioprofundum, transferred from the family Thioalkalispiraceae. [Mh] Termos MeSH primário: Gammaproteobacteria/classificação Fontes Termais/microbiologia Filogenia Bactérias Redutoras de Enxofre/classificação Enxofre/metabolismo [Mh] Termos MeSH secundário: Processos Autotróficos Técnicas de Tipagem Bacteriana Composição de Bases DNA Bacteriano/genética Ácidos Graxos/química Gammaproteobacteria/genética Gammaproteobacteria/isolamento & purificação Japão RNA Ribossômico 16S/genética Análise de Sequência de DNA Bactérias Redutoras de Enxofre/genética Bactérias Redutoras de Enxofre/isolamento & purificação [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (Fatty Acids); 0 (RNA, Ribosomal, 16S); 70FD1KFU70 (Sulfur) [Em] Mês de entrada: 1709 [Cu] Atualização por classe: 170920 [Lr] Data última revisão: 170920 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170907 [St] Status: MEDLINE [do] DOI: 10.1099/ijsem.0.002137

7 / 1022

MEDLINE

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[PMID]: 28869003 [Au] Autor: Huang Z; Lai Q; Shao Z [Ad] Endereço: 1​Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, PR China 2​State Key Laboratory Breeding Base of Marine Genetic Resources, Xiamen 361005, PR China 4​Fujian Collaborative Innovation Center of Marine Biological Resources, Xiamen 361005, PR China 3​Fujian Key Laboratory of Marine Genetic Resources, Xiamen 361005, PR China 5​South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Xiamen 361005, PR China. [Ti] Título: Pleomorphobacterium xiamenense Yin et al. 2013 is a later heterotypic synonym of Oceanicella actignis Albuquerque et al. 2012. [So] Source: Int J Syst Evol Microbiol;67(9):3532-3534, 2017 Sep. [Is] ISSN: 1466-5034 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: Pleomorphobacterium xiamenense CLWT was compared with Oceanicella actignis PRQ-67T to examine the taxonomic relationship between the two organisms. The 16S rRNA gene sequence comparison showed that the two strains had 99.9 % sequence similarity. Phylogenetic analysis showed the two strains formed an independent tight cluster, distinctly branching from the closely related species in the family Rhodobacteraceae. Whole genomic comparison between the two strains revealed a digital DNA-DNA hybridization estimate of 88.4 % and average nucleotide identity of 98.8 %, strongly supporting that the two strains represented a single species. In addition, neither strain displayed any striking difference in biochemical characteristics, fatty acid composition, and polar lipid profile. According to priority, Pleomorphobacterium xiamenense is reclassified as a later heterotypic synonym of Oceanicella actignis based on the phylogenetic relationship, whole genomic comparison, fatty acid composition and polar lipid profile, and other phenotypic and biochemical properties. [Mh] Termos MeSH primário: Fontes Termais/microbiologia Filogenia Rhodobacteraceae/classificação [Mh] Termos MeSH secundário: Técnicas de Tipagem Bacteriana Composição de Bases China DNA Bacteriano/genética Ácidos Graxos/química Hibridização de Ácido Nucleico Fosfolipídeos/química RNA Ribossômico 16S/genética Rhodobacteraceae/genética Rhodobacteraceae/isolamento & purificação Análise de Sequência de DNA [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (Fatty Acids); 0 (Phospholipids); 0 (RNA, Ribosomal, 16S) [Em] Mês de entrada: 1709 [Cu] Atualização por classe: 170920 [Lr] Data última revisão: 170920 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170905 [St] Status: MEDLINE [do] DOI: 10.1099/ijsem.0.002160

8 / 1022

MEDLINE

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[PMID]: 28853682 [Au] Autor: Khan IU; Habib N; Hussain F; Xian WD; Amin A; Zhou EM; Ahmed I; Zhi XY; Li WJ [Ad] Endereço: 1​Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, PR China. [Ti] Título: Thermus caldifontis sp. nov., a thermophilic bacterium isolated from a hot spring. [So] Source: Int J Syst Evol Microbiol;67(8):2868-2872, 2017 Aug. [Is] ISSN: 1466-5034 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: A thermophilic bacterial strain, designated YIM 73026T was isolated from a sediment sample collected from a hot spring in Tibet, PR China. The taxonomic position of the novel isolate was investigated by a polyphasic approach. The novel isolate was Gram-stain-negative, aerobic and rod-shaped. Colonies were circular, convex, opaque and yellow. The strain grew at 50-70 °C (optimum, 60 °C), pH 6.0-8.0 (optimum, pH 7.0) and in the presence of up to 1.0 % NaCl (w/v). Comparison of the 16S rRNA gene sequences of YIM 73026T and those of other members of the genus Thermus showed sequence similarities ranging from 91.2 to 97.5 %, with YIM 73026T showing closest sequence similarity to Thermus scotoductus SE-1T (97.5 %). DNA-DNA hybridization results, however, revealed that DNA-DNA reassociation values between YIM 73026T and T. scotoductus DSM 8553T (37.6 %), Thermusamyloliquefaciens YIM 77409T (34.5 %), Thermusantranikianii DSM 12462T (30.3 %), Thermuscaliditerrae YIM 77925T (28.6 %) and Thermustengchongensis YIM 77924T (27.3 %) were well below the 70 % limit for species identification. YIM 73026T contained MK-8 as the respiratory quinone, and iso-C15 : 0, iso-C16 : 0, iso-C17 : 0 and anteiso-C15 : 0 as the major cellular fatty acids (>10 %). The polar lipids consisted of one aminophospholipid, one phospholipid and two glycolipids. The genomic DNA G+C content of YIM 73026T was 65.4 mol%. On the basis of morphological, chemotaxonomic and genotypic characteristics, it is proposed that the isolate represents a novel species of the genus Thermus, for which the name Thermus caldifontis sp. nov. is proposed. The type strain is YIM 73026T (=NBRC 112415T=CCTCC AB 2016305T). [Mh] Termos MeSH primário: Fontes Termais/microbiologia Filogenia Thermus/classificação [Mh] Termos MeSH secundário: Técnicas de Tipagem Bacteriana Composição de Bases DNA Bacteriano/genética Ácidos Graxos/química Glicolipídeos/química Hibridização de Ácido Nucleico Fosfolipídeos/química RNA Ribossômico 16S/genética Análise de Sequência de DNA Thermus/genética Thermus/isolamento & purificação Tibet Vitamina K 2/análogos & derivados Vitamina K 2/química [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (Fatty Acids); 0 (Glycolipids); 0 (Phospholipids); 0 (RNA, Ribosomal, 16S); 11032-49-8 (Vitamin K 2); 523-38-6 (vitamin MK 8) [Em] Mês de entrada: 1709 [Cu] Atualização por classe: 170918 [Lr] Data última revisão: 170918 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170831 [St] Status: MEDLINE [do] DOI: 10.1099/ijsem.0.002037

9 / 1022

MEDLINE

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[PMID]: 28820123 [Au] Autor: Ming H; Ji WL; Li S; Zhao ZL; Zhang LY; Meng XL; Zhou EM; Nie GX; Li WJ [Ad] Endereço: 1​Synthetic Biology Remaking Engineering and Application Laboratory (SynBreal), College of Life Sciences and Technology, Xinxiang Medical University, Xinxiang 453003, PR China 2​Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China. [Ti] Título: Laceyella thermophila sp. nov., a thermophilic bacterium isolated from a hot spring. [So] Source: Int J Syst Evol Microbiol;67(8):2953-2958, 2017 Aug. [Is] ISSN: 1466-5034 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: A novel themophilic bacterium, designated YIM 79486T, was isolated from a sediment sample collected from Jinze hot spring in Tengchong county, Yunnan province, south-west China. Phylogenetic analysis based on 16S rRNA gene sequence analysis revealed that strain YIM 79486T should be assigned to the genus Laceyella and formed a monophyletic clade with the type strain Laceyella putida KCTC 3666T (98.7 % similarity). Strain YIM 79486T formed white aerial mycelium and brown substrate mycelium. Abundant endospores were produced on short sporophores. Cell-wall peptidoglycan contained meso-diaminopimelic acid. The predominant menaquinones were MK-9 and MK-8. The genomic DNA G+C content observed for strain YIM 79486T was 47.8 mol%. Based on low DNA-DNA hybridization data, chemotaxonomic characteristics and differential physiological properties, strain YIM 79486T is considered to represent a novel species within the genus Laceyella, for which the name Laceyella thermophila sp. nov. is proposed. The type strain is YIM 79486T (=CCTC AB 2015040T=NBRC 110772T). [Mh] Termos MeSH primário: Bacillales/classificação Fontes Termais/microbiologia Filogenia [Mh] Termos MeSH secundário: Bacillales/genética Bacillales/isolamento & purificação Técnicas de Tipagem Bacteriana Composição de Bases China DNA Bacteriano/genética DNA Ribossômico/genética Ácido Diaminopimélico/química Ácidos Graxos/química Hibridização de Ácido Nucleico Peptidoglicano/química RNA Ribossômico 16S/genética Análise de Sequência de DNA Vitamina K 2/química [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (DNA, Ribosomal); 0 (Fatty Acids); 0 (Peptidoglycan); 0 (RNA, Ribosomal, 16S); 11032-49-8 (Vitamin K 2); 583-93-7 (Diaminopimelic Acid) [Em] Mês de entrada: 1709 [Cu] Atualização por classe: 170918 [Lr] Data última revisão: 170918 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170819 [St] Status: MEDLINE [do] DOI: 10.1099/ijsem.0.002057

10 / 1022

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[PMID]: 28792366 [Au] Autor: Habib N; Khan IU; Hussain F; Zhou EM; Xiao M; Dong L; Zhi XY; Li WJ [Ad] Endereço: 1​Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, 650091, PR China. [Ti] Título: Meiothermus luteus sp. nov., a slightly thermophilic bacterium isolated from a hot spring. [So] Source: Int J Syst Evol Microbiol;67(8):2910-2914, 2017 Aug. [Is] ISSN: 1466-5034 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: A slightly thermophilic, aerobic bacterium, designated YIM 72257T, was isolated from a sediment sample taken from a hot spring in Tengchong county, Yunnan province, south-west China. The isolate was Gram-stain-negative, non-sporulating and forms non-motile rods, appearing in chains. The isolate grew at 50-65 °C, pH 6.0-9.0 and with 0.5-1 % NaCl (w/v). 16S rRNA gene sequence analysis showed that strain YIM 72257T was most closely related to Meiothermus cateniformans LY1T (95.6 %), Meiothermus ruber DSM 1279T (95.1 %) and Meiothermus taiwanensis WR-30T (94.6 %). The genomic DNA G+C content of strain YIM 72257T was 62.6 mol%. The main cellular fatty acids (>5 %) were anteiso-C15 : 0, anteiso-C17 : 0, iso-C16 : 0, iso-C17 : 0, iso-C15 : 0 and C16 : 0. The polar lipids consisted of an uncharacterized phospholipid and two glycolipids. Based on phenotypic, phylogenetic and chemotaxonomic characteristics, strain YIM 72257T is proposed to be a representative of a novel species of the genus Meiothermus, for which the name Meiothermus luteus sp. nov. is proposed. The type strain is YIM 72257T (=KCTC 52599T=CCTCC AB 2017100T). [Mh] Termos MeSH primário: Sedimentos Geológicos/microbiologia Bacilos e Cocos Aeróbios Gram-Negativos/classificação Fontes Termais/microbiologia Filogenia [Mh] Termos MeSH secundário: Técnicas de Tipagem Bacteriana Composição de Bases China DNA Bacteriano/genética Ácidos Graxos/química Glicolipídeos/química Bacilos e Cocos Aeróbios Gram-Negativos/genética Bacilos e Cocos Aeróbios Gram-Negativos/isolamento & purificação Fosfolipídeos/química RNA Ribossômico 16S/genética Análise de Sequência de DNA [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (Fatty Acids); 0 (Glycolipids); 0 (Phospholipids); 0 (RNA, Ribosomal, 16S) [Em] Mês de entrada: 1709 [Cu] Atualização por classe: 170919 [Lr] Data última revisão: 170919 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170810 [St] Status: MEDLINE [do] DOI: 10.1099/ijsem.0.002040

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