Albidovulum xiamenense sp. nov., a moderately thermophilic bacterium from a terrestrial hot spring

2012 ◽  
Vol 62 (Pt_7) ◽  
pp. 1609-1612 ◽  
Author(s):  
Decui Yin ◽  
Jing Xiao ◽  
Jingqun Ao ◽  
Chunxiang Ai ◽  
Xinhua Chen

An aerobic, motile, moderately thermophilic, rod-shaped bacterium, strain YBY-7T, was isolated from a terrestrial hot spring of a garden exhibition located in Xiamen City, Fujian Province, People’s Republic of China. Cells of strain YBY-7T were Gram-negative, irregular rods, 2–6 µm long and 0.4–0.6 µm wide, with polar flagella, and the organism formed beige colonies. The temperature and pH ranges for growth of strain YBY-7T were 28–65 °C (optimum 50–58 °C) and pH 6.5–9.5 (optimum pH 7.5–8.5). Growth occurred in the presence of 5.5 % NaCl (optimum 3.0 %). Phylogenetic analysis based on the 16S rRNA gene sequence revealed that Albidovulum inexpectatum FRR-10T was its closest neighbour (95.9 % similarity). Ubiquinone (Q-10) was the sole respiratory quinone and the DNA G+C content of strain YBY-7T was 70.6 mol%. The predominant polar lipids were phosphatidylcholine, phosphatidylglycerol and phosphatidylethanolamine. The major fatty acids were C18 : 1ω7c (29.3 %), C19 : 0 cyclo ω8c (25.6 %), C18 : 0 (23.6 %) and C16 : 0 (9.6 %). Based on its physiological characteristics and our phylogenetic analysis, we propose that strain YBY-7T represents a novel species of the genus Albidovulum , for which the name Albidovulum xiamenense sp. nov. is proposed, with the type strain YBY-7T ( = MCCC 1A06317T  = CGMCC 1.10789T  = LMG 26247T).

2013 ◽  
Vol 63 (Pt_5) ◽  
pp. 1868-1873 ◽  
Author(s):  
Decui Yin ◽  
Liwei Chen ◽  
Jingqun Ao ◽  
Chunxiang Ai ◽  
Xinhua Chen

An aerobic, motile, moderately thermophilic rod, designated strain CLWT, was isolated from a terrestrial hot spring in an exposition garden in Xiamen City, Fujian Province, the People’s Republic of China. Strain CLWT formed beige, dry colonies on solid 2216E medium and flocks in liquid medium. Cells were Gram-stain-negative, short rods (1.0–3.0 µm long and 0.4–0.6 µm wide) with six or more polar flagella. The temperature and pH for growth of strain CLWT were 28–65 °C (optimum, 50–58 °C) and pH 5.5–9.5 (optimum, pH 6.0–8.0). Growth occurred in the presence of 0.3–6.0 % NaCl (optimum 2.5–4.5 %). Phylogenetic analysis based on 16S rRNA gene sequences showed that the closest relative of the isolate was Amaricoccus kaplicensis Ben 101T (94.3 % sequence similarity). The DNA G+C content of strain CLWT was 72.2 mol%. The respiratory quinone was ubiquinone 10. The predominant polar lipids consisted of phosphatidylglycerol and phosphatidylethanolamine. The major fatty acids (>10 %) were summed feature 8 (consisting of C18 : 1ω7c and/or C18 : 1ω6c), C18 : 1ω7c 11-methyl and C18 : 0. Based on phylogenetic, physiological and biochemical data and DNA G+C content, strain CLWT is considered to represent a novel species of a new genus in the family Rhodobacteraceae , for which the name Pleomorphobacterium xiamenense gen. nov., sp. nov. is proposed. The type strain of the type species is CLWT ( = LMG 26245T = CGMCC 1.10808T = MCCC 1A06272T).


2013 ◽  
Vol 63 (Pt_4) ◽  
pp. 1396-1402 ◽  
Author(s):  
Carolina Rubiano-Labrador ◽  
Sandra Baena ◽  
Carolina Díaz-Cárdenas ◽  
Bharat K. C. Patel

An anaerobic, moderately thermophilic, terminal-spore-forming bacterium, designated strain USBA AT, was isolated from a terrestrial hot spring located at an altitude of 2683 m in the Andean region of Colombia (04° 50′ 14.0″ N 75° 32′ 53.4″ W). Cells of strain USBA AT were Gram-stain-positive, straight to slightly curved rods (0.9×2.5 µm), that were arranged singly or in pairs, and were motile by means of flagella. Growth occurred at 37–55 °C and pH 6.0–8.0, with a doubling time of 2 h under the optimal conditions (50 °C and pH 7.0). Glucose fermentation in strain USBA AT required yeast extract or peptone (each at 0.2 %, w/v). The novel strain fermented sugars, amino acids, Casamino acids, propanol, propionate, starch and dextrin, but no growth was observed on galactose, lactose, xylose, histidine, serine, threonine, benzoate, butyrate, lactate, pyruvate, succinate, methanol, ethanol, glycerol, casein, gelatin or xylan. The end products of glucose fermentation were formate, acetate, ethanol and lactate. Strain USBA AT did not grow autotrophically (with CO2 as carbon source and H2 as electron donor) and did not reduce thiosulfate, sulfate, elemental sulfur, sulfite, vanadium (V) or Fe (III) citrate. Growth of strain USBA AT was inhibited by ampicillin, chloramphenicol, kanamycin, penicillin and streptomycin (each at 10 µg ml−1). The predominant fatty acids were iso-C15 : 0, C16 : 0 and iso-C17 : 0 and the genomic DNA G+C content was 32.6 mol%. 16S rRNA gene sequence analysis indicated that strain USBA AT belonged in the phylum Firmicutes and that its closest relative was Caloramator viterbiensis JW/MS-VS5T (95.0 % sequence similarity). A DNA–DNA relatedness value of only 30 % was recorded in hybridization experiments between strain USBA AT and Caloramator viterbiensis DSM 13723T. Based on the phenotypic, chemotaxonomic and phylogenetic evidence and the results of the DNA–DNA hybridization experiments, strain USBA AT represents a novel species of the genus Caloramator , for which the name Caloramator quimbayensis sp. nov. is proposed. The type strain is USBA AT ( = CMPUJ U833T  = DSM 22093T).


2013 ◽  
Vol 63 (Pt_1) ◽  
pp. 254-259 ◽  
Author(s):  
Nathaniel A. Losey ◽  
Bradley S. Stevenson ◽  
Susanne Verbarg ◽  
Stephen Rudd ◽  
Edward R. B. Moore ◽  
...  

A novel bacterial strain designated HA-01T was isolated from a freshwater terrestrial hot spring located at Hot Springs National Park, Arkansas, USA. Cells were Gram-negative-staining, rod-shaped, aerobic, chemo-organotrophic, oxidase- and catalase-positive, non-spore-forming and motile by means of a single polar flagellum. Growth occurred at 37–60 °C, with an optimum between 45 and 50 °C, and at pH 6.5–8.5, with an optimum between pH 6.5 and 7.0. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the closest relatives of strain HA-01T were Solimonas aquatica NAA-16T (93.8 %), Solimonas flava CW-KD 4T (94.1 %), Solimonas soli DCY12T (93.1 %), Solimonas variicoloris MN28T (94.0 %), Nevskia ramosa Soe1T (91.2 %) and Hydrocarboniphaga effusa AP103T (91.1 %). Major fatty acids consisted of C16 : 0, iso-C16 : 0, C16 : 1ω5c and summed feature 8 (C18 : 1ω9c, C18 : 1ω7c and C18 : 1ω6c). Polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine, and the major isoprenoid quinone was Q-8. The DNA G+C content was 64.4 mol%. Based on phylogenetic, phenotypic and chemotaxonomic evidence, it is proposed that strain HA-01T represents a novel species in a new genus for which the name Fontimonas thermophila gen. nov., sp. nov. is proposed. The type strain of the type species is HA-01T ( = DSM 23609T = CCUG 59713T). A new family, Solimonadaceae fam. nov., is also proposed to replace Sinobacteriaceae Zhou et al. 2008.


2013 ◽  
Vol 63 (Pt_2) ◽  
pp. 479-483 ◽  
Author(s):  
Anna A. Perevalova ◽  
Ilya V. Kublanov ◽  
R. V. Baslerov ◽  
Gengxin Zhang ◽  
Elizaveta A. Bonch-Osmolovskaya

A novel thermophilic bacterium, strain Kam1851T, was isolated from a terrestrial hot spring of the Uzon Caldera, Kamchatka Peninsula, Russia. Cells of strain Kam1851T were spore-forming rods with a Gram-positive type of cell wall. Growth was observed between 46 and 78 °C, and pH 5.5–8.5. The optimal growth (doubling time, 6.0 h) was at 60–65 °C and pH 6.5. The isolate was an obligate anaerobe growing in pre-reduced medium only. It grew on mineral medium with molecular hydrogen or formate as electron donors, and elemental sulfur, thiosulfate or polysulfide as electron acceptors. The main cellular fatty acids were C16 : 0 (34.2 %), iso-C16 : 0 (18 %), C18 : 0 (12.8 %) and iso-C17 : 0 (11.1 %). The G+C content of the genomic DNA of strain Kam1851T was 63 mol%. 16S rRNA gene sequence analysis showed that strain Kam1851T belonged to the order Thermoanaerobacterales , but it was not closely related to representatives of any genera with validly published names. The most closely related strains, which had no more than 89.2 % sequence similarity, were members of the genera Ammonifex and Caldanaerobacter . On the basis of its phylogenetic position and novel phenotypic features, isolate Kam1851T is proposed to represent a novel species in a new genus, Brockia lithotrophica gen. nov., sp. nov.; the type strain of Brockia lithotrophica is Kam1851T ( = DSM 22653T = VKM B-2685T).


2012 ◽  
Vol 62 (Pt_4) ◽  
pp. 849-855 ◽  
Author(s):  
Kadriye Inan ◽  
Sabriye Canakci ◽  
Ali Osman Belduz ◽  
Fikrettin Sahin

Two Gram-positive, moderately thermophilic, endospore-forming, rod-shaped, motile bacteria, designated PDF25T and PDF30, were isolated from Karakoc hot spring in the province of Izmir, Turkey, and were characterized in order to determine their phylogenetic positions. 16S rRNA gene sequence analysis revealed that the two strains belonged to the genus Brevibacillus ; strain PDF25T showed highest sequence similarity to strain PDF30 (99.4 %) and Brevibacillus thermoruber DSM 7064T (98.5 %). The major fatty acids of strain PDF25T were iso-C15 : 0 (39.30 %), anteiso-C15 : 0 (26.10 %) and iso-C16 : 0 (14.75 %). Polar lipid analysis revealed diphosphatidylglycerol, phosphatidylglycerol, phosphatidylmonomethylethanolamine, phosphatidylethanolamine, and a variety of unidentified aminophospholipids, phospholipids and aminolipids. The major isoprenoid quinone was MK-7. The G+C content of the genomic DNA was 56.09 mol%. DNA–DNA hybridization experiments revealed 58 % relatedness between strain PDF25T and B. thermoruber DSM 7064T. Based on these data, the two strains are considered to represent a novel species of the genus Brevibacillus , for which the name Brevibacillus aydinogluensis sp. nov. is proposed. The type strain is PDF25T ( = DSM 24395T = LMG 26289T).


2013 ◽  
Vol 63 (Pt_11) ◽  
pp. 4064-4071 ◽  
Author(s):  
Xin-Qi Zhang ◽  
Zhen-Li Zhang ◽  
Nan Wu ◽  
Xu-Fen Zhu ◽  
Min Wu

A strictly aerobic, Gram-stain-positive, motile and spore-forming bacterium, strain 3nP4T, was isolated from the Puge hot spring located in the south-western geothermal area of China. Strain 3nP4T grew at 38–66 °C (optimum 57–60 °C), at pH 6.0–9.3 (optimum 7.0–7.5) and with 0–4 % (w/v) NaCl (optimum 0–0.5 %). Phylogenetic analysis of 16S rRNA gene sequences, as well as DNA–DNA relatedness values, indicated that the isolate represents a novel species of the genus Anoxybacillus , related most closely to Anoxybacillus voinovskiensis DSM 12111T. Strain 3nP4T had diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and one unidentified phospholipid as major polar lipids and iso-C15 : 0 and iso-C17 : 0 as major fatty acids, which are both typical chemotaxonomic characteristics of the genus Anoxybacillus . The mean DNA G+C content of strain 3nP4T was 39.2±0.95 mol% (HPLC). A distinctive characteristic of the novel isolate was its extreme reliance on vitamin mixture or yeast extract for growth. Based on data from this taxonomic study using a polyphasic approach, strain 3nP4T is considered to represent a novel species of the genus Anoxybacillus , for which the name Anoxybacillus vitaminiphilus sp. nov. is proposed. The type strain is 3nP4T ( = CGMCC 1.8979T = JCM 16594T).


2012 ◽  
Vol 62 (Pt_7) ◽  
pp. 1679-1686 ◽  
Author(s):  
Carla Crespo ◽  
Tania Pozzo ◽  
Eva Nordberg Karlsson ◽  
Maria Teresa Alvarez ◽  
Bo Mattiasson

A novel moderately thermophilic, anaerobic, ethanol-producing bacterial strain, 45BT, was isolated from a mixed sediment water sample collected from a hot spring at Potosi, Bolivia. The cells were straight to slightly curved rods approximately 2.5 µm long and 0.5 µm wide. The strain was Gram-stain-variable, spore-forming and monotrichously flagellated. Growth of the strain was observed at 45–65 °C and pH 5.5–8.0, with optima of 60 °C and pH 6.5. The substrates utilized by strain 45BT were xylose, cellobiose, glucose, arabinose, sucrose, lactose, maltose, fructose, galactose, mannose, glycerol, xylan, carboxymethylcellulose and yeast extract. The main fermentation product from xylose and cellobiose was ethanol (0.70 and 0.45 g ethanol per gram of consumed sugar, respectively). Acetate, lactate, propionate, carbon dioxide and hydrogen were also produced in minor quantities. 1,3-Propanediol was produced when glycerol-containing medium was supplemented with yeast extract. The major cellular fatty acids were anteiso-C15 : 0, C16 : 0, iso-C16 : 0, C15 : 1, iso-C14 : 0, C13 : 0 and C14 : 0. The polar lipids diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, an aminoglycolipid and 15 other unidentified lipids were predominant. The DNA G+C content of strain 45BT was 32.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequence similarity revealed that strain 45BT is located within the Gram-type positive Bacillus – Clostridium branch of the phylogenetic tree. On the basis of morphological and physiological properties and phylogenetic analysis, strain 45BT represents a novel species, for which the name Caloramator boliviensis sp. nov. is proposed; the type strain is 45BT ( = DSM 22065T = CCUG 57396T).


2020 ◽  
Vol 70 (4) ◽  
pp. 2726-2731 ◽  
Author(s):  
Kseniya S. Zayulina ◽  
Maria I. Prokofeva ◽  
Alexander G. Elcheninov ◽  
Margarita P. Voytova ◽  
Andrei A. Novikov ◽  
...  

A moderately thermophilic, neutrophilic, aerobic, Gram-negative bacterium, strain 3729kT, was isolated from a thermal spring of the Chukotka Peninsula, Arctic region, Russia. It grew chemoorganoheterotrophically, utilizing proteinaceous substrates, including highly rigid keratins as well as various polysaccharides (glucomannan, locust bean gum, gum guar and xanthan gum). The major fatty acids of strain 3729kT were iso-C15 : 0 (60.9%), iso-C17 : 0 (12.0%), C16 : 0 (9.9%) and iso-C16 : 0 (7.4%). Isoprenoid quinones were Q-8 (95%) and Q-9 (5%). The major polar lipids were phosphatidylglycerol, phosphatidylethanolamine, phosphatidylmethylethanolamine and three unidentified polar lipids. Strain 3729kT was inhibited by chloramphenicol, neomycin, novobiocin, kanamycin, tetracycline, ampicillin and polymyxin B, but resistant to rifampicin, vancomycin and streptomycin. At the same time, strain 3729kT inhibited growth of Micrococcus luteus and its genome possessed genes for antimicrobial activity against Gram-positive bacteria (a single putative bacteriocin and several secreted lysozymes and peptidoglycan lytic transglycosylases). The DNA G+C content was 69.8 mol%. 16S rRNA gene sequence-based phylogenetic analysis placed strain 3729kT into a distinct species/genus-level branch within the family Xanthomonadaceae ( Proteobacteria ). Phylogenetic analysis of 120 conservative protein sequences of all Xanthomonadaceae with validly published names and publicly available genomic sequences supported a species-level position of strain 3729kT within the genus Arenimonas . Pairwise ANI values between strain 3729kT and other Arenimonas species were of 75–80 %, supporting the proposal of a novel species. Accordingly, Arenimonas fontis sp. nov., with the type strain 3729kT (=VMK В−3232Т=DSM 105847T), was proposed.


2020 ◽  
Vol 70 (3) ◽  
pp. 1541-1546 ◽  
Author(s):  
Wen-Dong Xian ◽  
Ze-Tao Liu ◽  
Meng-Meng Li ◽  
Lan Liu ◽  
Yu-Zhen Ming ◽  
...  

A thermophilic bacterium, designated SYSU G03088T, was isolated from Moincer hot spring, Tibet, PR China. Polyphasic taxonomic analyses and whole-genome sequencing were used to determine the taxonomic position and genomic profiles of the strain. Phylogenetic analysis using 16S rRNA gene sequence indicated that SYSU G03088T showed highest sequence similarity to Rhodobacter blasticus CGMCC 1.3365T (96.0 % sequence identity). The strain could be differentiated from most recognized species of the genus Rhodobacter by its slightly purple colony colour, distinct phenotypic characters and low ANI values. Cells were Gram-staining negative, and oval-to-rod shaped. Poly-β-hydroxybutyrate and vesicular intracytoplasmic membrane structures were formed inside cells. Growth occurred optimally at 45 °C and pH 7.0. Ubiquinone 10 was the only respiratory quinone. The major fatty acids (>10 %) were C18 : 0, C18 : 1ω7c 11-methyl and summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c). The detected polar lipids of SYSU G03088T included diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and phosphatidylmethylethanolamine. The DNA G+C content of SYSU G03088T was 67.7 % (genome). On the basis of the differences in the phenotypic characteristics and phylogenetic analyses, SYSU G03088T is considered to represent a novel species of the genus Rhodobacter , for which the name Rhodobacter flagellatus sp. nov. is proposed. The type strain is SYSU G03088T (=CGMCC 1.16876T=KCTC 72354T).


2012 ◽  
Vol 62 (Pt_12) ◽  
pp. 2997-3002 ◽  
Author(s):  
Neha Niharika ◽  
Swati Jindal ◽  
Jasvinder Kaur ◽  
Rup Lal

A bacterial strain, designated Dd16T, was isolated from a hexachlorocyclohexane (HCH) dumpsite at Lucknow, India. Cells of strain Dd16T were Gram-stain-negative, non-motile, rod-shaped and yellow-pigmented. Phylogenetic analysis based on 16S rRNA gene sequences showed that the strain belonged to the genus Sphingomonas in the family Sphingomonadaceae , as it showed highest sequence similarity to Sphingomonas asaccharolytica IFO 15499T (95.36 %), Sphingosinicella vermicomposti YC7378T (95.30), ‘Sphingomonas humi’ PB323 (95.20 %), Sphingomonas sanxanigenens NX02T (95.14 %) and Sphingomonas desiccabilis CP1DT (95.00 %). The major fatty acids were summed feature 3 (C16 : 1ω7c/C16 : 1ω6c) C14 : 0 2-OH, summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c) and C16 : 0. The polar lipid profile of strain Dd16T also corresponded to those reported for species of the genus Sphingomonas (phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylcholine, phosphatidylglycerol, and a sphingoglycolipid), again supporting its identification as a member of the genus Sphingomonas . The predominant respiratory quinone was ubiquinone Q10, and sym-homospermidine was the major polyamine observed. The total DNA G+C content of strain Dd16T was 65.8 mol%. The results obtained on the basis of phenotypic characteristics and phylogenetic analysis and after biochemical and physiological tests, clearly distinguished strain Dd16T from closely related members of the genus Sphingomonas . Thus, strain Dd16T represents a novel species of the genus Sphingomonas for which the name Sphingomonas indica sp. nov. is proposed. The type strain is Dd16T ( = DSM 25434T = CCM 7882T).


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