scholarly journals Constrictibacter antarcticus gen. nov., sp. nov., a cryptoendolithic micro-organism from Antarctic white rock

2011 ◽  
Vol 61 (8) ◽  
pp. 1973-1980 ◽  
Author(s):  
Kozo Yamada ◽  
Wakao Fukuda ◽  
Yuka Kondo ◽  
Yuki Miyoshi ◽  
Haruyuki Atomi ◽  
...  

A Gram-negative, non-spore-forming, ovoid to rod-shaped aerobic or microaerobic bacterium, strain 262-8T, was isolated from a cavity within white rock collected in Antarctica. Strain 262-8T grew at 5–30 °C (optimum 25 °C), at pH 6–8 (optimum approximately pH 7) and with 0.1–2.0 % (w/v) NaCl (optimum 0.5 % NaCl). The addition of tryptone or yeast extract was essential for growth. Strain 262-8T was able to utilize organic compounds such as ribose, pyruvate and succinate in the presence of a low concentration of tryptone. Ubiquinone 10 was the major respiratory quinone. The major fatty acids were C18 : 1, C16 : 0 and C18 : 0. The G+C content of the genomic DNA was 69.8 mol%. Comparative analyses of 16S rRNA gene sequences and physiological characteristics indicated that strain 262-8T was a phylogenetically novel bacterium that should be classified in a new genus of the family Rhodospirillaceae, for which the name Constrictibacter antarcticus gen. nov., sp. nov. is proposed. The type strain of the type species is 262-8T ( = JCM 16422T = ATCC BAA-1906T).

2015 ◽  
Vol 65 (Pt_10) ◽  
pp. 3256-3261 ◽  
Author(s):  
Chang Liu ◽  
Xi-Ying Zhang ◽  
Xiao-Yan Song ◽  
Hai-Nan Su ◽  
Qi-Long Qin ◽  
...  

A novel Gram-reaction-negative, aerobic, pale-orange-pigmented bacterium, designated strain SM1216T, was isolated from Arctic intertidal sand. Cells of strain SM1216T were dimorphic rods with a single polar prostheca or flagellum. The strain grew at 4 − 30 °C (optimum at 25 °C) and with 0.5 − 6 % (w/v) NaCl (optimum with 2 − 3 %). It reduced nitrate to nitrite but did not hydrolyse gelatin, DNA or Tween 80. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain SM1216T was affiliated with the genus Algimonas in the family Hyphomonadaceae, sharing 97.5 and 96.3 % similarity with Algimonas ampicilliniresistens 14A-2-7T and Algimonas porphyrae 0C-2-2T, respectively, the two known species in the genus Algimonas. However, the level of DNA–DNA relatedness between strain SM1216T and the type strain of A. ampicilliniresistens, the nearest phylogenetic neighbour, was 57.9 %. The major cellular fatty acids of strain SM1216T were C18 : 1ω7c and C18 : 1 2-OH. The main polar lipids of strain SM1216T were monoglycosyldiglyceride (MGDG), glucuronopyranosyldiglyceride (GUDG), phosphatidylglycerol (PG) and three unidentified phospholipids (PL1–3). The major respiratory quinone was ubiquinone 10 (Q10). The genomic G+C content of strain SM1216T was 60.6 mol%. On the basis of the evidence from this polyphasic study, strain SM1216T represents a novel species in the genus Algimonas, for which the name Algimonas arctica sp. nov. is proposed. The type strain is SM1216T ( = MCCC 1K00233T = KCTC 32513T). An emended description of the genus Algimonas is also given.


2015 ◽  
Vol 65 (Pt_7) ◽  
pp. 2048-2055 ◽  
Author(s):  
Yun-xiang Wang ◽  
Fa-qi Huang ◽  
Yuichi Nogi ◽  
Shou-ji Pang ◽  
Ping-kang Wang ◽  
...  

A Gram-reaction-negative bacterial strain, designated fig4T, was isolated from a subsurface sediment core of Qiangtang Basin permafrost in China. Cells were catalase- and oxidase-positive and rods. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain fig4T was a member of the family Hyphomicrobiaceae and was most closely related to members of the genera Pelagibacterium, Vasilyevaea and Devosia with 93.8–96.2 % sequence similarities. The major cellular fatty acids were C16 : 0, C18 : 0, 11-methyl C18 : 1ω7c, C19 : 0 cyclo ω8c and summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c). The major respiratory quinone was Q-10 and the major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and two unknown glycolipids. The DNA G+C content was 60.7 mol%. Based on the phenotypic, phylogenetic and genotypic data, strain fig4T is considered to represent a novel species of a new genus in the family Hyphomicrobiaceae, for which the name Youhaiella tibetensis gen. nov., sp. nov. is proposed. The type strain is fig4T ( = CGMCC 1.12719T = JCM 19854T).


2015 ◽  
Vol 65 (Pt_7) ◽  
pp. 2260-2264 ◽  
Author(s):  
Wen-Jie Wu ◽  
Qian-Qian Liu ◽  
Guan-Jun Chen ◽  
Zong-Jun Du

A Gram-stain-negative, facultatively anaerobic, non-motile and pink-pigmented bacterium, designated strain HF08T, was isolated from marine sediment of the coast of Weihai, China. Cells were rod-shaped, and oxidase- and catalase-positive. The isolate grew optimally at 33 °C, at pH 7.5–8.0 and with 2–3 % (w/v) NaCl. The dominant cellular fatty acids were iso-C15 : 0, anteiso-C15 : 0 and iso-C14 : 0. Menaquinone 7 (MK-7) was the major respiratory quinone and the DNA G+C content was 44.8 mol%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the isolate was a member of the class Bacteroidia, and shared 88–90 % sequence similarity with the closest genera Sunxiuqinia, Prolixibacter, Draconibacterium, Mariniphaga and Meniscus. Based on the phylogenetic and phenotypic evidence presented, a novel species in a new genus of the family Prolixibacteraceae is proposed, with the name Roseimarinus sediminis gen. nov., sp. nov. The type strain of Roseimarinus sediminis is HF08T ( = KCTC 42261T = CICC 10901T).


Author(s):  
Olga I. Nedashkovskaya ◽  
Seung Bum Kim ◽  
Suk Kyun Han ◽  
Cindy Snauwaert ◽  
Marc Vancanneyt ◽  
...  

Three novel heterotrophic, Gram-negative, yellow-pigmented, aerobic, gliding, oxidase- and catalase-positive bacteria were isolated from algae collected in the Gulf of Peter the Great, Sea of Japan. 16S rRNA gene sequence analysis revealed that the strains studied represented members of the family Flavobacteriaceae and showed 93·5–93·8 % similarity with their closest relative, Psychroserpens burtonensis. The DNA G+C content of the strains was 34–37 mol%. The major respiratory quinone was MK-6. The predominant fatty acids were iso-C15 : 0, anteiso-C15 : 0, iso-C15 : 1, iso-C16 : 0-3OH and iso-C17 : 0-3OH. On the basis of their phenotypic, chemotaxonomic, genotypic and phylogenetic characteristics, the newly described bacteria have been assigned to the new genus Winogradskyella gen. nov., as Winogradskyella thalassocola sp. nov. (type strain, KMM 3907T=KCTC 12221T=LMG 22492T=DSM 15363T), Winogradskyella epiphytica sp. nov. (type strain, KMM 3906T=KCTC 12220T=LMG 22491T=CCUG 47091T) and Winogradskyella eximia sp. nov. (type strain, KMM 3944T (=KCTC 12219T=LMG 22474T).


2010 ◽  
Vol 60 (3) ◽  
pp. 580-584 ◽  
Author(s):  
Muhammad Yasir ◽  
Zubair Aslam ◽  
Geun Cheol Song ◽  
Che Ok Jeon ◽  
Young Ryun Chung

A Gram-stain-negative, rod-shaped bacterium, designated strain YC7378T was isolated from vermicompost (VC) collected at Masan, Korea, and its taxonomic position was investigated by using a polyphasic approach. Strain YC7378T grew optimally at 30 °C and at pH 6.5–8.5. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain YC7378T belongs to the genus Sphingosinicella in the family Sphingomonadaceae. The most closely related strains are Sphingosinicella soli KSL-125T (95.7 %), Sphingosinicella xenopeptidilytica 3-2W4T (95.6 %) and Sphingosinicella microcystinivorans Y2T (95.5 %). Strain YC7378T contained ubiquinone Q-10 as the major respiratory quinone system and sym-homospermidine as the major polyamine. The major fatty acids of strain YC7378T were C18 : 1 ω7c, C16 : 1 ω7c and/or iso-C15 : 0 2-OH, C14 : 0 2-OH and C16 : 0. The major polar lipids were sphingoglycolipid, diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The total DNA G+C content was 59.4 mol%. The phenotypic, phylogenetic and chemotaxonomic data showed that strain YC7378T represents a novel species of the genus Sphingosinicella, for which the name Sphingosinicella vermicomposti sp. nov. is proposed. The type strain is YC7378T (=KCTC 22446T =DSM 21593T).


2014 ◽  
Vol 64 (Pt_10) ◽  
pp. 3473-3477 ◽  
Author(s):  
Qian-Qian Liu ◽  
Xiao-Li Li ◽  
Alejandro P. Rooney ◽  
Zong-Jun Du ◽  
Guan-Jun Chen

A novel Gram-stain-negative, facultatively anaerobic, catalase- and oxidase-positive, non-motile and pink-pigmented bacterium, designated G22T, was isolated from Gahai, a saltwater lake in Qinghai province, China. Optimal growth occurred at 33–35 °C, pH 7.0–7.5, and in the presence of 2–4 % (w/v) NaCl. The DNA G+C content was 40.0 mol%. The major polar lipids were phosphatidylethanolamine and three unknown lipids. The predominant cellular fatty acids were iso-C15 : 0, anteiso-C15 : 0, iso-C17 : 0 3-OH and iso-C15 : 0 3-OH, and MK-7 was the main respiratory quinone. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain G22T fell within the class Bacteroidia . Its closest phylogenetic neighbour was the recently described species Draconibacterium orientale , the sole member of the family Draconibacteriaceae , with merely 90.04 % sequence similarity. On the basis of phenotypic, chemotaxonomic and phylogenetic evidence observed, a novel species in a new genus, Tangfeifania diversioriginum gen. nov., sp. nov., is proposed within the family Draconibacteriaceae . The type strain is G22T ( = CICC 10587T = DSM 27063T).


2015 ◽  
Vol 65 (Pt_12) ◽  
pp. 4309-4314 ◽  
Author(s):  
Yochan Joung ◽  
Sunhee Hong ◽  
Haneul Kim ◽  
Heeyoung Kang ◽  
Christine E. Farrance ◽  
...  

A Gram-stain-negative, non-motile and yellow-pigmented bacterium, designated HME8275T, was isolated from freshwater in Korea. The major fatty acids of strain HME8275T were summed feature 3 (comprising C16 : 1ω6c and/or C16 : 1ω7c), C16 : 0 and iso-C15 : 0. The only respiratory quinone was MK-7. Polar lipid analysis showed phosphatidylethanolamine, two unidentified aminolipids, two unidentified aminophospholipids and three unidentified polar lipids. The DNA G+C content of strain HME8275T was 37.6 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain HME8275T formed a lineage within the family Cytophagaceae and was related to Lacihabitans soyangensis HME6675T (92.6 % 16S rRNA gene sequence similarity), Leadbetterella byssophila 4M15T (89.0 %), Fluviimonas pallidilutea TQQ6T (89.7 %) and Emticicia oligotrophica GPTSA100-15T (89.8 %). On the basis of the evidence presented in this study, strain HME8275T represents a novel species of a new genus in the family Cytophagaceae, for which the name Taeseokella kangwonensis, gen. nov., sp. nov. is proposed. The type strain of the type species is HME8275T ( = KACC 16933T = CECT 8198T).


2010 ◽  
Vol 60 (8) ◽  
pp. 1735-1739 ◽  
Author(s):  
Yuki Muramatsu ◽  
Mai Takahashi ◽  
Mika Kaneyasu ◽  
Takao Iino ◽  
Ken-ichiro Suzuki ◽  
...  

The taxonomic position of three bacterial strains, Asr22-19T, NBRC 101035 and NBRC 101041, isolated from shellfish in Japan, was determined by using a polyphasic taxonomic approach. The strains were facultatively anaerobic, motile by gliding and Gram-staining-negative slender rods. Their major respiratory quinone was menaquinone-7 and their predominant cellular fatty acids were iso-C15 : 0, iso-C17 : 0 3-OH, iso-C15 : 0 3-OH, C16 : 0 3-OH, and C16 : 0. The G+C content of the genomic DNA was 42.0–42.7 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that the strains clustered with the genus Persicobacter in the family ‘Flammeovirgaceae’. DNA–DNA relatedness values were higher than 68 % among strains Asr22-19T, NBRC 101035 and NBRC 101041, and were lower than 28 % between strain Asr22-19T and Persicobacter diffluens NBRC 15940T. The three novel strains could be differentiated from Persicobacter diffluens by several phenotypic characteristics. On the basis of these results, the novel species Persicobacter psychrovividus sp. nov. (type strain Asr22-19T=NBRC 101262T=CIP 109100T) is proposed and emended descriptions are given for the genus Persicobacter and for Persicobacter diffluens.


2007 ◽  
Vol 57 (9) ◽  
pp. 1948-1951 ◽  
Author(s):  
Shoichi Hosoya ◽  
Vullapa Arunpairojana ◽  
Chatrudee Suwannachart ◽  
Akkharawit Kanjana-Opas ◽  
Akira Yokota

A novel gliding marine bacterium (strain 59SAT) was isolated from marine barnacle debris. A phylogenetic analysis based on 16S rRNA gene sequences showed that the isolate formed a distinct lineage within the genus Aureispira in the family ‘Saprospiraceae’. The DNA G+C content of strain 59SAT was 38.7 mol%, the major respiratory quinone was MK-7 and the predominant cellular fatty acids were 20 : 4ω6c and 16 : 0. On the basis of the data from DNA–DNA hybridization, physiological and chemotaxonomic analyses and 16S rRNA gene sequence comparisons, strain 59SAT represents a novel species of the genus Aureispira, for which the name Aureispira maritima sp. nov. is proposed. The type strain is 59SAT (=IAM 15439T=TISTR 1726T).


2013 ◽  
Vol 63 (Pt_10) ◽  
pp. 3868-3872 ◽  
Author(s):  
Jung Moon Hwang ◽  
Eu Jin Chung ◽  
Jeong Ae Park ◽  
Jae Heon Jeong ◽  
Che Ok Jeon ◽  
...  

A novel bacterial strain, YC6899T, was isolated from the root of Suaedae maritima growing on a tidal flat of Namhae Island, Korea. Cells were Gram-reaction-negative, rod-shaped, non-motile, slightly halophilic and heterotrophic. Strain YC6899T grew optimally at a salinity of 2–4 %, at 25–37 °C and at pH 6.5–8.0. Phylogenetic analysis of 16S rRNA gene sequences demonstrated that strain YC6899T was closely related to Amorphus orientalis YIM D10T (96.1 % similarity) and Amorphus coralli RS.Sph.026T (95.9 %). The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, unknown aminolipids, an unknown aminophospholipid, an unknown aminoglycolipid, unknown glycolipids and unknown lipids. The major fatty acids of strain YC6899T were C19 : 0 cyclo ω8c and C18 : 1ω7c. The G+C content of the genomic DNA was 61.3 mol%. Strain YC6899T contained ubiquinone-10 (Q-10) as the major respiratory quinone system. On the basis of phenotypic, chemotaxonomic and phylogenetic data, strain YC6899T represents a novel species within the genus Amorphus , for which the name Amorphus suaedae sp. nov. is proposed. The type strain is YC6899T ( = KACC 14912T = NBRC 107845T).


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