scholarly journals Algibacter psychrophilus sp. nov., a psychrophilic bacterium isolated from marine sediment

2015 ◽  
Vol 65 (Pt_6) ◽  
pp. 1735-1740 ◽  
Author(s):  
You-Jung Jung ◽  
Yung Mi Lee ◽  
Kiwoon Baek ◽  
Chung Yeon Hwang ◽  
Yirang Cho ◽  
...  
Keyword(s):  
Marine Sediment ◽  
Type Species ◽  
Ross Sea ◽  
Rrna Gene ◽  
Psychrophilic Bacterium ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Major Respiratory Quinone ◽  
Type Strains

A Gram-stain-negative, aerobic, yellow-pigmented, flexirubin-negative, rod-shaped, non-motile and psychrophilic bacterial strain, PAMC 27237T, was isolated from marine sediment of the Ross Sea, Antarctica. Strain PAMC 27237T grew at 0–20 °C (optimally at 17 °C), at pH 5.0–9.5 (optimally at pH 7.0) and in the presence of 0–3.5 % (w/v) NaCl (optimally at 1.5–2.5 %). The major fatty acids (≥5 %) were iso-C17 : 0 3-OH, C17 : 0 2-OH, anteiso-C15 : 0, summed feature 3 (C16 : 1ω6c/C16 : 1ω7c), iso-C15 : 0 3-OH, anteiso-C17 : 1ω9c, anteiso-C15 : 1 A, iso-C16 : 0 3-OH and iso-C15 : 1 G. The major polar lipids were phosphatidylethanolamine, two unidentified aminolipids, four unidentified lipids and a glycolipid. The major respiratory quinone was MK-6. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that strain PAMC 27237T belongs to the genus Algibacter, showing high similarities with the type strains of Algibacter agarivorans (97.2 %), Algibacter agarilyticus (97.0 %) and Algibacter mikhailovii (96.4 %). Average nucleotide identity values between strain PAMC 27237T and the type strains of A. agarivorans and A. agarilyticus were 83.1 and 84.2 %, respectively, and mean genome-to-genome distances were 22.4–24.2 %, indicating that strain PAMC 27237T is clearly distinguished from the most closely related species of the genus Algibacter . The genomic DNA G+C content calculated from genome sequences was 33.5 mol%. Based on the phenotypic, chemotaxonomic and phylogenetic data presented, strain PAMC 27237T is considered to represent a novel species of the genus Algibacter , for which the name Algibacter psychrophilus sp. nov. is proposed. The type strain is PAMC 27237T ( = KCTC 42130T = JCM 30370T).

Pseudenhygromyxa salsuginis gen. nov., sp. nov., a myxobacterium isolated from an estuarine marsh

2013 ◽  
Vol 63 (Pt_4) ◽  
pp. 1360-1369 ◽  
Author(s):  
Takashi Iizuka ◽  
Yasuko Jojima ◽  
Atsushi Hayakawa ◽  
Takayoshi Fujii ◽  
Shigeru Yamanaka ◽  
...  
Keyword(s):  
Type Species ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Strictly Aerobic ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Major Respiratory Quinone ◽  
Agar Media ◽  
Type Strains

A myxobacterial strain, designated SYR-2T, was obtained from a mud sample from an estuarine marsh alongside the Yoshino River, Shikoku, Japan. It had rod-shaped vegetative cells and formed bacteriolytic enlarging colonies or so-called ‘swarms’ in the agar media. Fruiting-body-like globular to polyhedral cell aggregates and myxospore-like spherical to ellipsoidal cells within them were observed. Those features coincided with the general characteristics of myxobacteria. The strain was mesophilic and strictly aerobic. Growth of SYR-2T was observed at 18–40 °C (optimum, 30–35 °C), pH 5.5–8.3 (optimum, pH 7.0–7.5) and with 0.0–2.5 % (w/v) NaCl (optimum, 0.2–1.0 %). Both Mg2+ and Ca2+ were essential cations for the growth. The predominant fatty acids were iso-C15 : 0 (43.8 %), iso-C17 : 0 (22.4 %) and iso-C16 : 0 (9.6 %). A C20 : 4 fatty acid [arachidonic acid (4.3 %)], iso-C19 : 0 (1.5 %) and anteiso-acids [ai-C15 : 0 (0.5 %), ai-C17 : 0 (0.3 %)] were also detected. The G+C content of the DNA was 69.7 mol%. The strain contained menaquinone-7 (MK-7) as the major respiratory quinone. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain SYR-2T belonged to the suborder Nannocystineae , order Myxococcales in the class Deltaproteobacteria , and the strain was most closely related to two type strains of marine myxobacteria, Enhygromyxa salina SHK-1T and Plesiocystis pacifica SIR-1T, with 96.5 % and 96.0 % similarities, respectively. These characteristics determined in this polyphasic study suggested that strain SYR-2T represents a novel species in a new genus of myxobacteria. The name Pseudenhygromyxa salsuginis gen. nov., sp. nov. is proposed to accommodate this isolate, and the type strain of Pseudenhygromyxa salsuginis is SYR-2T ( = NBRC 104351T = DSM 21377T).

scholarly journals Zoogloea dura sp. nov., a N2-fixing bacterium isolated from forest soil and emendation of the genus Zoogloea and the species Zoogloea oryzae and Zoogloea ramigera

2020 ◽  
Vol 70 (10) ◽  
pp. 5312-5318 ◽  
Author(s):  
Ram Hari Dahal ◽  
Dhiraj Kumar Chaudhary ◽  
Dong-Uk Kim ◽  
Jaisoo Kim
Keyword(s):  
Forest Soil ◽  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Major Respiratory Quinone ◽  
Type Strains ◽  
Zoogloea Ramigera

A motile, Gram-stain-negative, rod-shaped bacterium, designated G-4-1-14T, was obtained from forest soil sampled at Gwanggyo mountain, Gyeonggi-do, Republic of Korea. Cells were colourless, aerobic, grew optimally at 28–35 °C and hydrolysed DNA and casein. Phylogenetic analysis based on its 16S rRNA gene sequence revealed that strain G-4-1-14T formed a lineage within the genus Zoogloea . The closest members were Zoogloea resiniphila ATCC 70068T (98.6 % sequence similarity), Zoogloea caeni EMB43T (98.2 %), Zoogloea oryzae A-7T (97.7 %), Zoogloea ramigera IAM 12136T (96.9 %) and Zoogloea oleivorans BucT (96.2 %). The major respiratory quinone was ubiquinone-8 and the principal polar lipids were phosphatidylethanolamine, phosphatidyl-N-methylethanolamine, diphosphatidylglycerol and phosphatidylglycerol. The predominant cellular fatty acids were summed feature 3 (iso-C15 :0 2-OH/C16  : 1 ω7c) and C16 : 0. The DNA G+C content was 65.9 mol%. The average nucleotide identity and digital DNA–DNA hybridization relatedness values between strain G-4-1-14T and other type strains were ≤81.6 and ≤24.9 %, respectively, which are below the species demarcation thresholds. Based on the results of phenotypic, phylogenetic and genomic analyses, strain G-4-1-14T represents a novel species in the genus Zoogloea , for which the name Zoogloea dura sp. nov. is proposed. The type strain is G-4-1-14T (=KACC 21618T=NBRC 114358T). In addition, we propose emendation of the genus Zoogloea and the species Zoogloea oryzae and Zoogloea ramigera .

scholarly journals Sneathiella aquimaris sp. nov., isolated from aquaculture seawater

2020 ◽  
Vol 70 (6) ◽  
pp. 3824-3831 ◽  
Author(s):  
Guizhen Li ◽  
Qiliang Lai ◽  
Peisheng Yan ◽  
Li Gu ◽  
Zongze Shao
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Chromosomal Dna ◽  
Phenotypic Data ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Major Respiratory Quinone ◽  
Type Strains

A novel marine bacterium, designated strain 216LB-ZA1-12T, was isolated from a Penaeus vannamei aquaculture seawater sample. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain 216LB-ZA1-12T belonged to the genus Sneathiella , with the highest sequence similarity to Sneathiella glossodoripedis MKT133T (97.7 %), followed by Sneathiella limimaris GH1-24T (97.0 %), Sneathiella chungangensis CAU 1294T (96.6 %) and Sneathiella chinensis LMG 23452T (96.1 %). The average nucleotide identity and the DNA–DNA hybridization estimate values between strain 216LB-ZA1-12T and four close type strains were between 69.2–71.3% and 16.7–17.8 %, respectively. The bacterium was Gram-stain-negative, facultatively anaerobic, oxidase and catalase positive, oval- to rod-shaped, and motile. Growth was observed at pH 7–9, salinities of 1–15% and temperatures of 4–42 °C. The G+C content of the chromosomal DNA was 48.50 mol%. The major respiratory quinone was determined to be Q-10. The principal fatty acids were summed feature 8 (C18 : 1  ω7c/ω6c) and C16 : 0. The major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine and aminophospholipid. The combined genotypic and phenotypic data show that strain 216LB-ZA1-12T represents a novel species within the genus Sneathiella , for which the name Sneathiella aquimaris sp. nov. is proposed, with the type strain 216LB-ZA1-12T (=MCCC 1A14570T=KCTC 72144T).

scholarly journals Psychroserpens jangbogonensis sp. nov., a psychrophilic bacterium isolated from Antarctic marine sediment

2015 ◽  
Vol 65 (Pt_1) ◽  
pp. 183-188 ◽  
Author(s):  
Kiwoon Baek ◽  
Yung Mi Lee ◽  
Chung Yeon Hwang ◽  
Hyun Park ◽  
You-Jung Jung ◽  
...  
Keyword(s):  
Marine Sediment ◽  
Type Species ◽  
Ross Sea ◽  
Rrna Gene ◽  
Psychrophilic Bacterium ◽  
Phenotypic Data ◽  
Unidentified Phospholipid ◽  
Content Type ◽  
Link Type ◽  
Gram Staining

A Gram-staining-negative, yellow-pigmented, aerobic, rod-shaped and non-motile bacterium, PAMC 27130T, was isolated from the marine sediment of the Ross Sea, Antarctica. The temperature, pH and NaCl tolerance ranges for growth were 4–20 °C, pH 6.0–9.0 and 0.5–5.0 % (w/v) NaCl, respectively. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain PAMC 27130T belonged to the genus Psychroserpens and was closely related to Psychroserpens mesophilus , Psychroserpens damuponensis and Psychroserpens burtonensis with 97.2, 94.7 and 94.2 % sequence similarities, respectively. Genomic relatedness analyses based on average nucleotide identity and genome-to-genome distance showed that strain PAMC 27130T could be clearly distinguished from other species of the genus Psychroserpens . The genomic DNA G+C content was 32.7 mol%. The major fatty acids (>10 %) were C20 : 4ω6c (13.2 %), iso-C15 : 0 (12.3 %), iso-C15 : 1 G (11.7 %) and iso-C15 : 0 3-OH (10.0 %). The major respiratory isoprenoid quinone was menaquinone-6 (MK-6) and the polar lipids were phosphatidylethanolamine, two unidentified aminolipids, an unidentified phospholipid, an unidentified aminophospholipid and three unidentified lipids. On the basis of genotypic and phenotypic data collected in this study, it is proposed that strain PAMC 27130T represents a novel species of the genus Psychroserpens , for which the name Psychroserpens jangbogonensis sp. nov. is proposed. The type strain is PAMC 27130T ( = KCTC 42128T = JCM 30228T).

scholarly journals Cyclobacterium qasimii sp. nov., a psychrotolerant bacterium isolated from Arctic marine sediment

2012 ◽  
Vol 62 (Pt_9) ◽  
pp. 2133-2139 ◽  
Author(s):  
S. Shivaji ◽  
P. Vishnu Vardhan Reddy ◽  
S. S. S. Nageshwara Rao ◽  
Zareena Begum ◽  
Poorna Manasa ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Marine Sediment ◽  
Dna Hybridization ◽  
Type Species ◽  
Unsaturated Fatty Acids ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Sequence Similarities

A novel Gram-stain-negative, horseshoe-shaped, non-motile bacterium, designated strain M12-11BT, was isolated from a marine sediment sample collected at a depth of 200 m from Kongsfjorden, Svalbard. The colony colour was orangish red due to the presence of carotenoids. Fatty acids were dominated by branched and unsaturated fatty acids (90.8 %), with a high abundance of iso-C15 : 0 (14.9 %), anteiso-C15 : 0 (11.4 %), iso-C15 : 1 G (13.1 %), C15 : 1ω6c (5.4 %), C17 : 1ω6c (6.7 %), summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c; 9.3 %) and summed feature 9 (10-methyl C16 : 0 and/or iso-C17 : 1ω9c; 5.9 %). Strain M12-11BT contained MK-7 as the major respiratory quinone. The polar lipids consisted of phosphatidylcholine, phosphatidylethanolamine, one unidentified aminolipid and three unidentified lipids. Based on 16S rRNA gene sequence similarities, the type strains of Cyclobacterium amurskyense , Cyclobacterium marinum and Cyclobacterium lianum were most closely related to M12-11BT with sequence similarities of 98.2, 96.8 and 93.3 %, respectively. Other members of the family Cyclobacteriaceae had sequence similarities of <92.0 %. However, DNA–DNA hybridization with Cyclobacterium amurskyense KCTC 12363T and Cyclobacterium marinum DSM 745T showed relatedness values of only 24.5 and 32.5 % with respect to strain M12-11BT. Based on the results of DNA–DNA hybridization experiments and phenotypic and chemotaxonomic data, it appears that strain M12-11BT represents a novel species of the genus Cyclobacterium , for which the name Cyclobacterium qasimii sp. nov. is proposed; the type strain is M12-11BT ( = KCTC 23011T = NBRC 106168T) and it has a DNA G+C content of 40.5 mol%.

Chitinophaga oryzae sp. nov., an epiphytic bacterium isolated from rice root surfaces

2021 ◽  
Vol 71 (7) ◽  
Author(s):  
Nantawan Niemhom ◽  
Chanwit Suriyachadkun ◽  
Chokchai Kittiwongwattana
Keyword(s):  
Type Species ◽  
Rrna Gene ◽  
Major Polar Lipid ◽  
Bacterial Strains ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Major Respiratory Quinone ◽  
Phylogenomic Analyses ◽  
Close Relatives

Two Gram-stain-negative, non-motile, rod-shaped bacterial strains were isolated from the surfaces of rice roots. They were designated as strains 1303T and 1310. Their colonies were circular, entire, opaque, convex and yellow. They were chitinase- and catalase-positive, reduced nitrate and grew at 16–37 °C (optimum, 30 °C), pH 5.0–10.0 (optimum, pH 7.0) and 0–2.0% NaCl (optimum, 1.0 %). Based on the 16S rRNA gene sequence analysis, they were classified as members of the genus Chitinophaga . Results of phylogenetic and phylogenomic analyses indicated that they formed a cluster with Chitinophaga eiseniae YC6729T, Chitinophaga qingshengii JN246T, Chitinophaga varians 10-7 W-9003T and Chitinophaga fulva G-6-1-13T. When the genomic sequences of strains 1303T and 1310 were compared with their close relatives, the average nucleotide identity and digital DNA–DNA hybridization values were below the cut-off levels. Phosphatidylethanolamine was the major polar lipid. MK-7 was the major respiratory quinone. iso-C15 : 0, C16 : 1  ω5c, iso-C17 : 0 3-OH and summed feature 3 (C16 : 1  ω7c/C16 : 1  ω6c) were the predominant fatty acids. Differential characteristics between both strains and their close relatives were also observed. Based on the distinctions in genotypic, phenotypic and chemotypic features, strains 1303T and 1310 represent members of a novel species of the genus Chitinophaga , for which the name Chitinophaga oryzae sp. nov. is proposed. The type strain is 1303T (=KACC 22075T=TBRC 12926T).

Flavobacterium enshiense sp. nov., isolated from soil, and emended descriptions of the genus Flavobacterium and Flavobacterium cauense , Flavobacterium saliperosum and Flavobacterium suncheonense

2013 ◽  
Vol 63 (Pt_3) ◽  
pp. 886-892 ◽  
Author(s):  
Kun Dong ◽  
Fang Chen ◽  
Yan Du ◽  
Gejiao Wang
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Species ◽  
Rrna Gene ◽  
Strictly Aerobic ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Major Respiratory Quinone ◽  
The City

A Gram-negative, strictly aerobic, yellow-pigmented rod, designated DK69T, was isolated from soil collected from the waste liquid treatment facility of Bafeng Pharmaceutical Company in the city of Enshi, Hubei Province, China. Phylogenetic analysis based on 16S rRNA gene sequences placed strain DK69T in the genus Flavobacterium of the family Flavobacteriaceae . The highest 16S rRNA gene sequence similarities were found with Flavobacterium cauense R2A-7T (96.9 %), Flavobacterium saliperosum AS 1.3801T (96.3 %) and Flavobacterium suncheonense GH29-5T (95.7 %). The major fatty acids (≥5 %) were iso-C15 : 0, iso-C17 : 1ω9c, C15 : 0, iso-C17 : 0 3-OH and iso-C15 : 0 3-OH. The major polar lipids were phosphatidylethanolamine, one unidentified aminolipid and one unidentified lipid. The major respiratory quinone was menaquinone-6. The genomic DNA G+C content was 34.4 mol%. Strain DK69T represents a novel species of the genus Flavobacterium , for which the name Flavobacterium enshiense sp. nov. is proposed. The type strain is DK69T ( = CCTCC AB 2011144T  = KCTC 23775T). Emended descriptions of the genus Flavobacterium and Flavobacterium cauense , Flavobacterium saliperosum and Flavobacterium suncheonense are also proposed.

Tsuneonella suprasediminis sp. nov., isolated from the Pacific Ocean

2019 ◽  
Vol 71 (3) ◽  
Author(s):  
Yan Gao ◽  
Guangyu Li ◽  
Chen Fang ◽  
Zongze Shao ◽  
Yue-Hong Wu ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Type Species ◽  
Sequence Similarity ◽  
Cellular Fatty Acid ◽  
Rrna Gene ◽  
Overlying Water ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Type Strains

A Gram-stain-negative, rod-shaped and aerobic bacterial strain, named Ery12T, was isolated from the overlying water of the Lau Basin in the Southwest Pacific Ocean. Strain Ery12T showed high 16S rRNA gene sequences similarity to Tsuneonella flava MS1-4T (99.9 %), T. mangrovi MCCC 1K03311T (98.1 %), Altererythrobacter ishigakiensis NBRC 107699T (97.3 %) and exhibited ≤97.0 % sequence similarity with other type strains of species with validly published names. Growth was observed in media with 0–10.0 % NaCl (optimum 0–1.0 %, w/v), pH 5.0–9.5 (optimum 6.0–7.0) and 10–42 °C (optimum 30–37 °C). The predominant respiratory quinone was ubiquinone 10 (Q-10). The major cellular fatty acid was summed feature 8 (C18 : 1  ω7c and/or C18 : 1  ω6c). The major polar lipids were sphingoglycolipid, phosphatidyglycerol, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, three unidentified glycolipids, one unidentified aminoglycolipid and one unidentified lipid. The DNA G+C content was 60.8 %. The ANI and in silico DDH values between strain Ery12T and the type strains of its closely related species were 71.0- 91.8 % and 19.5- 44.6 %, respectively. According to the phenotypic, chemotaxonomic, phylogenetic and genomic data, strain Ery12T represents a novel species of the genus Tsuneonella , for which the name Tsuneonella suprasediminis is proposed. The type strain is Ery12T (=CGMCC 1.16500 T=MCCC 1A04421T=KCTC 62388T). We further propose to reclassify Altererythrobacter rhizovicinus and Altererythrobacter spongiae as Pelagerythrobacter rhizovicinus comb. nov. and Altericroceibacterium spongiae comb. nov., respectively.

scholarly journals Flavobacterium palustre sp. nov., isolated from wetland soil

2015 ◽  
Vol 65 (Pt_3) ◽  
pp. 1003-1007 ◽  
Author(s):  
Hao Feng ◽  
Yanhua Zeng ◽  
Yili Huang
Keyword(s):  
Type Species ◽  
Polar Lipids ◽  
Wetland Soil ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Gram Staining ◽  
Major Respiratory Quinone ◽  
Xixi Wetland

A Gram-staining-negative, non-motile, yellow-coloured, rod-shaped bacterium, designated S44T, was isolated from bankside soil of Xixi wetland, located in Zhejiang province, China. Growth of strain S44T was observed at 6–37 °C (optimum, 28 °C) and at pH 6.0–9.0 (optimum, 7.0). No growth occurred in the presence of >2 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain S44T represented a member of the genus Flavobacterium , showing the highest sequence similarities to the sequences from Flavobacterium succinicans DSM 4002T (96.9 %), Flavobacterium reichenbachii WB 3.2-61T (96.6 %) and Flavobacterium glycines NCBI 105008T (96.5 %). The G+C content of the genomic DNA was 33.6 mol%. The predominant cellular fatty acids were C15 : 0, iso-C15 : 0, anteiso-C15 : 0 and summed feature 3 (comprising C16 : 1ω7c and/or iso-C15 : 0 2-OH), and the major respiratory quinone was menaquinone 6 (MK-6). The major polar lipids were phosphatidylethanolamine, two unknown aminolipids, two unknown aminophospholipids and four unknown polar lipids. On the basis of the phenotypic and genotypic data, it is proposed that the isolate S44T be classified as representing a novel species of the genus Flavobacterium , for which the name Flavobacterium palustre sp. nov. is proposed. The type strain is S44T ( = CGMCC 1.12811T = NBRC 110389T).

Geobacter luticola sp. nov., an Fe(III)-reducing bacterium isolated from lotus field mud

2013 ◽  
Vol 63 (Pt_2) ◽  
pp. 442-448 ◽  
Author(s):  
Samson Viulu ◽  
Kohei Nakamura ◽  
Yurina Okada ◽  
Sakiko Saitou ◽  
Kazuhiro Takamizawa
Keyword(s):  
Type Species ◽  
Novel Species ◽  
Rrna Gene ◽  
Strictly Anaerobic ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Major Respiratory Quinone ◽  
Physiological Tests ◽  
Straight Rod

A novel species of Fe(III)-reducing bacterium, designated strain OSK6T, belonging to the genus Geobacter , was isolated from lotus field mud in Japan. Strain OSK6T was isolated using a solid medium containing acetate, Fe(III)-nitrilotriacetate (NTA) and gellan gum. The isolate is a strictly anaerobic, Gram-negative, motile, straight rod-shaped bacterium, 0.6–1.9 µm long and 0.2–0.4 µm wide. The growth of the isolate occurred at 20–40 °C with optima of 30–37 °C and pH 6.5–7.5 in the presence of up to 0.5 g NaCl l−1. The G+C content of the genomic DNA was determined by HPLC to be 59.7 mol%. The major respiratory quinone was MK-8. The major fatty acids were 16 : 1ω7c and 16 : 0. Strain OSK6T was able to grow with Fe(III)-NTA, ferric citrate, amorphous iron (III) hydroxide and nitrate, but not with fumarate, malate or sulfate as electron acceptors. Among examined substrates grown with Fe(III)-NTA, the isolate grew on acetate, lactate, pyruvate and succinate. Analysis of the near full-length 16S rRNA gene sequence revealed that strain OSK6T is closely related to Geobacter daltonii and Geobacter toluenoxydans with 95.6 % similarity to the type strains of these species. On the basis of phylogenetic analysis and physiological tests, strain OSK6T is described as a representative of a novel species, Geobacter luticola sp. nov.; the type strain is OSK6T ( = DSM 24905T = JCM 17780T).

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