Iodobacter limnosediminis sp. nov., isolated from Arctic lake sediment

2013 ◽  
Vol 63 (Pt_4) ◽  
pp. 1464-1470 ◽  
Author(s):  
Wei Su ◽  
Zhichao Zhou ◽  
Fan Jiang ◽  
XuLu Chang ◽  
Ying Liu ◽  
...  
Keyword(s):  
Lake Sediment ◽  
Type Strain ◽  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Biochemical Tests ◽  
Respiratory Quinone ◽  
Content Type ◽  
Arctic Lake ◽  
Link Type

A Gram-reaction-negative, motile, non-violet-pigmented, rod-shaped bacterial strain, designated E1T, was isolated from Arctic lake sediment. Growth occurred at 4 °C–28 °C (optimum, 18 °C), at pH 4–11(optimum, 9–10) and in the presence of 0–1 % (w/v) NaCl. The taxonomic position of E1T was analysed using a polyphasic approach. Strain E1T exhibited 16S rRNA gene sequence similarity value of 98.1 % with respect to the type strain of Iodobacter fluviatilis , but no more than 93 % with the type strains of other recognized species. A further DNA–DNA hybridization experiment was conducted, which demonstrated unambiguously that strain E1T was distinct from I. fluviatilis ATCC 33051T (51.3 % relatedness). The DNA G+C content of strain E1T was 52.3 mol%. Chemotaxonomic data [Q-8 as the monospecific respiratory quinone and summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c, 56.1 %) and C16 : 0 (18.8 %) as the major cellular fatty acids] supported the affiliation of strain E1T to the genus Iodobacter . However, the results of physiological and biochemical tests allowed phenotypic differentiation of strain E1T from I. fluviatilis ATCC 33051T. On the basis of phenotypic and genotypic properties, strain E1T represents a novel species of genus Iodobacter, for which the name Iodobacter limnosediminis sp. nov. is proposed. The type strain is E1T ( = CCTCC AB 2010224T = NRRL B-59456T).

Hansschlegelia beijingensis sp. nov., an aerobic, pink-pigmented, facultatively methylotrophic bacterium isolated from watermelon rhizosphere soil

2013 ◽  
Vol 63 (Pt_10) ◽  
pp. 3715-3719 ◽  
Author(s):  
Xiao-lin Zou ◽  
Xiu-ai Li ◽  
Xu-Ming Wang ◽  
Qiang Chen ◽  
Miao Gao ◽  
...  
Keyword(s):  
Type Strain ◽  
Type Species ◽  
Sequence Similarity ◽  
Methylotrophic Bacterium ◽  
Rrna Gene ◽  
Biochemical Tests ◽  
Respiratory Quinone ◽  
Polar Lipid Profile ◽  
Content Type ◽  
Link Type

A novel Gram-stain-negative, aerobic, rod-shaped strain designated PG04T was isolated from the rhizosphere of watermelon plants cultivated in Beijing, China. A polyphasic taxonomic study was performed on the new isolate. On the basis of 16S rRNA gene sequence similarity studies, isolate PG04T belonged clearly to the genus Hansschlegelia and was most closely related to Hansschlegelia zhihuaiae (97.3 % similarity to the type strain). The predominant respiratory quinone was ubiquinone 10 (Q-10) and the polar lipid profile was composed of the major lipids diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidylcholine. The major fatty acids were C18 : 1ω7c (41.3 %), C19 : 0 cyclo ω8c (30.6 %) and C16 : 0 (19.1 %). The G+C content of the DNA was about 64.4 mol%. DNA–DNA hybridization experiments showed 34.4 % relatedness between strain PG04T and H. zhihuaiae DSM 18984T. The results of physiological and biochemical tests and differences in fatty acid profiles allowed clear phenotypic differentiation of strain PG04T from the most closely related species in the genus, H. zhihuaiae . Strain PG04T therefore represents a novel species within the genus Hansschlegelia , for which the name Hansschlegelia beijingensis sp. nov. is proposed, with the type strain PG04T ( = DSM 25481T = ACCC 05759T).

scholarly journals Aequorivita sinensis sp. nov., isolated from sediment of the East China Sea, and reclassification of Vitellibacter todarodis as Aequorivita todarodis comb. nov. and Vitellibacter aquimaris as Aequorivita aquimaris comb. nov.

2020 ◽  
Vol 70 (5) ◽  
pp. 3323-3327 ◽  
Author(s):  
Qian Wang ◽  
Sheng-Dong Cai ◽  
Jie Liu ◽  
De-Chao Zhang
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Polar Lipid Profile ◽  
Content Type ◽  
Link Type

The Gram-strain-negative, rod-shaped, facultatively anaerobic, non-motile bacterial strain, designated S1-10T, was isolated from marine sediment. Strain S1-10T grew at 4–42 °C (optimally at 30–35 °C), at pH 7.0–10 (optimally at pH 9) and in the presence of 0.5–8 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain S1-10T was related to the genus Aequorivita and had highest 16S rRNA gene sequence similarity to Aequorivita viscosa 8-1bT (97.7%). The predominant cellular fatty acids were iso-C15 : 0 and anteiso-C15 : 0. The main respiratory quinone was menaquinone 6 (MK-6). The genomic DNA G+C content of strain S1-10T was 34.6 mol%. The polar lipid profile of strain S1-10T contained phosphatidylethanolamine, two aminolipids, two glycolipids, one phosphoglycolipid and three unidentified polar lipids. In addition, the maximum values of in silico DNA–DNA hybridization (isDDH) and average nucleotide identity (ANI) between strain S1-10T and A. viscosa CGMCC 1.11023T were 15.4 and 75.7 %, respectively. Combined data from phenotypic, phylogenetic, isDDH and ANI analyses demonstrated that strain S1-10T is the representative of a novel species of the genus Aequorivita , for which we propose the name Aequorivita sinensis sp. nov. (type strain S1-10T=CGMCC 1.12579T=JCM 19789T). We also propose that Vitellibacter todarodis and Vitellibacter aquimaris should be transferred into genus Aequorivita and be named Aequorivita todarodis comb. nov. and Aequorivita aquimaris comb. nov., respectively. The type strain of Aequorivita todarodis comb. nov. is MYP2-2T (= KCTC 62141T= NBRC 113025T) and the type strain of Aequorivita aquimaris comb. nov. is D-24T (=KCTC 42708T=DSM 101732T).

scholarly journals Sphingomonas corticis sp. nov., and Sphingobacterium corticibacterium sp. nov., from bark canker

2020 ◽  
Vol 70 (11) ◽  
pp. 5627-5633 ◽  
Author(s):  
Yong Li ◽  
Shengkun Wang ◽  
Ju-pu Chang ◽  
Dan-ran Bian ◽  
Li-min Guo ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Type Strain ◽  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Bacterial Strains ◽  
Respiratory Quinone ◽  
Polar Lipid Profile ◽  
Content Type ◽  
Link Type

Two Gram-stain-negative, aerobic, non-motile bacterial strains, 36D10-4-7T and 30C10-4-7T, were isolated from bark canker tissue of Populus × euramericana, respectively. 16S rRNA gene sequence analysis revealed that strain 36D10-4-7T shows 98.0 % sequence similarity to Sphingomonas adhaesiva DSM 7418T, and strain 30C10-4-7T shows highest sequence similarity to Sphingobacterium arenae H-12T (95.6 %). Average nucleotide identity analysis indicates that strain 36D10-4-7T is a novel member different from recognized species in the genus Sphingomonas . The main fatty acids and respiratory quinone detected in strain 36D10-4-7T are C18 : 1  ω7c and/or C18 : 1  ω6c and Q-10, respectively. The polar lipids are diphosphatidylglycerol, phosphatidylcholine, phosphatidylglycerol, aminolipid, phosphatidylethanolamine, sphingoglycolipid, two uncharacterized phospholipids and two uncharacterized lipids. For strain 30C10-4-7T, the major fatty acids and menaquinone are iso-C15 : 0, C16 : 1  ω7c and/or C16 : 1  ω6c and iso-C17 : 0 3-OH and MK-7, respectively. The polar lipid profile includes phosphatidylethanolamine, phospholipids, two aminophospholipids and six unidentified lipids. Based on phenotypic and genotypic characteristics, these two strains represent two novel species within the genera Sphingomonas and Sphingobacterium . The name Sphingomonas corticis sp. nov. (type strain 36D10-4-7T=CFCC 13112T=KCTC 52799T) and Sphingobacterium corticibacterium sp. nov. (type strain 30C10-4-7T=CFCC 13069T=KCTC 52797T) are proposed.

Litoreibacter roseus sp. nov., a novel bacteriochlorophyll a-containing bacterium

2021 ◽  
Author(s):  
Masataka Kanamuro ◽  
Yuki Sato-Takabe ◽  
So Muramatsu ◽  
Setsuko Hirose ◽  
Yuki Muramatsu ◽  
...  
Keyword(s):  
Type Strain ◽  
Type Species ◽  
Near Infrared ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Strictly Aerobic ◽  
Phenotypic Data ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type

A strictly aerobic, bacteriochlorophyll (BChl) a-containing alphaproteobacterium, designated strain K6T, was isolated from seawater around an aquaculture site in the Uwa Sea in Japan. The novel strain grew optimally at 30 °C at pH 7.0–7.5 and in the presence of 2.0 % (w/v) NaCl. The nonmotile and coccoid or rod-shaped cells formed pink-pigmented colonies on agar plates containing organic compounds. Cells showed an in vivo absorption maximum at 870 nm in the near-infrared region, indicating the presence of BChl a in the light-harvesting 1 complex. The new bacterial strain was Gram-stain-negative and oxidase- and catalase-positive. Phylogenetic analysis based on the 16S rRNA gene sequence showed that strain K6T was closely related to species in the genus Litoreibacter . The closest phylogenetic relatives of strain K6T were Litoreibacter ponti GJSW-31T (98.56 % sequence similarity), Litoreibacter janthinus KMM 3842T (97.63 %) and Litoreibacter albidus KMM 3851T (96.88 %). The G+C content of the genomic DNA was 58.26 mol%. The average nucleotide identity value of strain K6T with the type strain of L. ponti was 77.16 % (SD 4.79 %). The digital DNA−DNA hybridization value of strain K6T with the type strain of L. ponti was 19.40 %. The respiratory quinone was ubiquinone-10. The major cellular fatty acids were C18 : 1 ω7c, C16 : 0 and 11-methyl C18 : 1 ω7c. The dominant polar lipids were phosphatidylcholine and phosphatidylglycerol. On the basis of the genetic and phenotypic data obtained in the present study, we propose a new species in the genus Litoreibacter : Litoreibacter roseus sp. nov., whose type strain is K6T (=DSM 110109T=NBRC 114114T). Strain K6T represents the first confirmed species that produces BChl a within the genus Litoreibacter .

Sphingomonas ginsengisoli sp. nov. and Sphingomonas sediminicola sp. nov.

2013 ◽  
Vol 63 (Pt_2) ◽  
pp. 496-501 ◽  
Author(s):  
Dong-Shan An ◽  
Qing-Mei Liu ◽  
Hyung-Gwan Lee ◽  
Mi-Seon Jung ◽  
Sun-Chan Kim ◽  
...  
Keyword(s):  
Type Strain ◽  
Type Species ◽  
Sequence Similarity ◽  
Distinct Species ◽  
Rrna Gene ◽  
Biochemical Tests ◽  
Phenotypic Differentiation ◽  
Content Type ◽  
Link Type ◽  
Novel Bacteria

Two novel bacteria, designated strains Gsoil 634T and Dae 20T, were isolated in South Korea from soil of a ginseng field and freshwater sediment, respectively and were characterized by a polyphasic approach to clarify their taxonomic positions. Phylogenetic analysis based on 16S rRNA gene sequences indicated that, although they probably represented two distinct species (indicated by a sequence similarity of 96.6 %), both strain Gsoil 634T and strain Dae 20T belonged to the genus Sphingomonas and were most closely related to ‘Sphingomonas humi’ PB323 (97.8 % and 96.7 % sequence similarity, respectively), Sphingomonas kaistensis PB56T (96.8 % and 96.7 %), Sphingomonas astaxanthinifaciens TDMA-17T (96.6 % and 95.4 %) and Sphingomonas jaspsi TDMA-16T (95.6 % and 95.8 %). For both novel strains, the major ubiquinone was Q-10, the major polyamine was homospermidine, the major cellular fatty acids included summed feature 7 (C18 : 1ω7c, C18 : 1ω9t and/or C18 : 1ω12t), C17 : 1ω6c and C16 : 0, and the polar lipids included sphingoglycolipid. These chemotaxonomic data supported the affiliation of both strains to the genus Sphingomonas . However, the DNA–DNA relatedness value between strain Gsoil 634T and ‘Sphingomonas humi’ PB323T was 31 %. Moreover, the results of physiological and biochemical tests allowed the phenotypic differentiation of strains Gsoil 634T and Dae 20T from established members of the genus Sphingomonas . Based on these data, the two isolates represent two novel species in the genus Sphingomonas , for which the names Sphingomonas ginsengisoli sp. nov. (type strain Gsoil 634T = KCTC 12630T = DSM 18094T = LMG 23739T) and Sphingomonas sediminicola sp. nov. (type strain Dae 20T  = KCTC 12629T = DSM 18106T = LMG 23592T) are proposed.

scholarly journals Hypericibacter terrae gen. nov., sp. nov. and Hypericibacter adhaerens sp. nov., two new members of the family Rhodospirillaceae isolated from the rhizosphere of Hypericum perforatum

2020 ◽  
Vol 70 (3) ◽  
pp. 1850-1860 ◽  
Author(s):  
Zahra Noviana ◽  
Selma Vieira ◽  
Javier Pascual ◽  
Serge Alain Tanemossu Fobofou ◽  
Manfred Rohde ◽  
...  
Keyword(s):  
Type Strain ◽  
Type Species ◽  
Hypericum Perforatum ◽  
Sequence Similarity ◽  
Limited Range ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
The Family

Two strains of the family Rhodospirillaceae were isolated from the rhizosphere of the medicinal plant Hypericum perforatum. Cells of both strains were Gram-stain-negative, motile by means of a single polar flagellum, non-spore-forming, non-capsulated, short rods that divided by binary fission. Colonies were small and white. Strains R5913T and R5959T were oxidase-positive, mesophilic, neutrophilic and grew optimally without NaCl. Both grew under aerobic and microaerophilic conditions and on a limited range of substrates with best results on yeast extract. Major fatty acids were C19 : 0 cyclo ω8c and C16 : 0; in addition, C18 : 1ω7c was also found as a predominant fatty acid in strain R5913T. The major respiratory quinone was ubiquinone 10 (Q-10). The DNA G+C contents of strains R5913T and R5959T were 66.0 and 67.4 mol%, respectively. 16S rRNA gene sequence comparison revealed that the closest relatives (<92 % similarity) of the strains are Oceanibaculum pacificum MCCC 1A02656T, Dongia mobilis CGMCC 1.7660T, Dongia soli D78T and Dongia rigui 04SU4-PT. The two novel strains shared 98.6 % sequence similarity and represent different species on the basis of low average nucleotide identity of their genomes (83.8 %). Based on the combined phenotypic, genomic and phylogenetic investigations, the two strains represent two novel species of a new genus in the family Rhodospirillaceae , for which the name Hypericibacter gen. nov. is proposed, comprising the type species Hypericibacter terrae sp. nov. (type strain R5913T=DSM 109816T=CECT 9472T) and Hypericibacter adhaerens sp. nov. (type strain R5959T=DSM 109817T=CECT 9620T).

scholarly journals Maribacter luteus sp. nov., a marine bacterium isolated from intertidal sand of the Yellow Sea

2020 ◽  
Vol 70 (5) ◽  
pp. 3497-3503 ◽  
Author(s):  
Ang Liu ◽  
Yan-Jiao Zhang ◽  
De-Kun Liu ◽  
Xiu-Zhen Li
Keyword(s):  
Yellow Sea ◽  
Type Strain ◽  
Type Species ◽  
Sequence Similarity ◽  
The Yellow Sea ◽  
Rrna Gene ◽  
Sand Sample ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type

A novel rod-shaped and Gram-stain-negative bacterium, designated strain RZ05T, was isolated from a sand sample collected from the intertidal zone of the Yellow Sea, PR China. Results of phylogenetic analysis based on 16S rRNA gene sequences revealed that strain RZ05T clusters within the genus Maribacter , a member of the family Flavobacteriaceae , and has the highest sequence similarity to Maribacter polysiphoniae KCTC 22021T (97.8 %), followed by Maribacter arenosus KCTC 52191T (97.2 %). Cells of this strain were observed to be aerobic, oxidase- and catalase-positive, motile by gliding and formed yellow colonies. Growth occurred at 7–40 °C (optimum, 30 °C), at pH 6.5–9.5 (optimum, pH 7.0) and with 0.5–6 % (optimum, 2 %) NaCl. Its polar lipid profile included phosphatidylethanolamine, two unidentified glycolipids, one unidentified aminolipid and four unidentified lipids. The major cellular fatty acids were iso-C15 : 0, iso-C15 : 1 G, iso-C17 : 0 3-OH, iso-C16 : 0 3-OH, iso-C15 : 0 3-OH, summed feature 9 (10-methyl C16 : 0/iso-C17 : 1  ω9c) and summed feature 3 (iso-C15 : 0 2-OH/C16 : 1  ω7c/C16 : 1  ω6c). The only respiratory quinone was menaquinone 6 (MK-6). The genome of strain RZ05T was 4.65 Mbp with a G+C content of 38.9 mol%. The average nucleotide identity and in silico DNA–DNA hybridization values between strain RZ05T and its most closely related type strain M. polysiphoniae KCTC 22021T were 80.3 and 26.3  %, respectively. The results of phylogenetic, phenotypic and chemotaxonomic analyses indicated that strain RZ05T represents a novel species of the genus Maribacter , for which the name Maribacter luteus sp. nov. is proposed. The type strain is RZ05T (=KCTC 62834T=MCCC 1K03617T).

Roseivivax isoporae sp. nov., isolated from a reef-building coral, and emended description of the genus Roseivivax

2012 ◽  
Vol 62 (Pt_6) ◽  
pp. 1259-1264 ◽  
Author(s):  
Ming-Hui Chen ◽  
Shih-Yi Sheu ◽  
Chaolun Allen Chen ◽  
Jih-Terng Wang ◽  
Wen-Ming Chen
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
The Novel ◽  
Biochemical Tests ◽  
Respiratory Quinone ◽  
Polar Lipid Profile ◽  
Content Type ◽  
Link Type

A bacterial strain, isolated from a sample of reef-building coral (Isopora palifera) collected off the coast of southern Taiwan, was characterized using a polyphasic taxonomic approach. The strain, designated sw-2T, was Gram-staining-negative, aerobic, rod-shaped and motile, with subpolar flagella, and formed greyish pink colonies. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain sw-2T was most closely related to Roseivivax halodurans Och 239T (97.4 % sequence similarity) and Roseivivax halotolerans Och 210T (96.4 %). The novel strain did not require NaCl for growth and exhibited optimal growth at 35–40 °C, at pH 7.5–8.0 and with 3–7 % (w/v) NaCl. It produced bacteriochlorophyll a under aerobic conditions. Summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c; 63.7 %) predominated in the cellular fatty acid profile. The novel strain’s major respiratory quinone was ubiquinone Q-10 and its genomic DNA G+C content was 68.8 mol%. The polar lipid profile consisted of a mixture of phosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, diphosphatidylglycerol, phosphatidyldimethylethanolamine, sulfo-quinovosyl diacylglycerol and three uncharacterized phospholipids. The level of DNA–DNA relatedness between strain sw-2T and Roseivivax halodurans Och 239T was only 15.0 %. The results of physiological and biochemical tests allowed the clear phenotypic differentiation of the novel strain from all established species of the genus Roseivivax . Based on the genotypic, phenotypic and chemotaxonomic data, strain sw-2T represents a novel species in the genus Roseivivax , for which the name Roseivivax isoporae sp. nov. is proposed. The type strain is sw-2T ( = LMG 25204T = BCRC 17966T).

scholarly journals Actinokineospora soli sp. nov., a thermotolerant actinomycete isolated from soil, and emended description of the genus Actinokineospora

2012 ◽  
Vol 62 (Pt_8) ◽  
pp. 1845-1849 ◽  
Author(s):  
Xia Tang ◽  
Yu Zhou ◽  
Jing Zhang ◽  
Hong Ming ◽  
Guo-Xing Nie ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Genomic Dna ◽  
Type Strain ◽  
Type Species ◽  
Sequence Similarity ◽  
Diaminopimelic Acid ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type

A strain of thermotolerant actinomycete, designated YIM 75948T, was isolated from a soil sample in Yunnan province, China. The strain grew at 25–55 °C (optimum 37 °C). The substrate mycelium and aerial mycelium produced on Czapek’s agar were both pale yellow to white. The diagnostic diamino acid of the cell-wall peptidoglycan was meso-diaminopimelic acid, and the whole-cell sugars were mannose, ribose, glucose, galactose and arabinose. The major fatty acids were iso-C15 : 0, iso-C16 : 0 and C16 : 0 and the predominant respiratory quinone was MK-9(H4). The polar lipids consisted of phosphatidylethanolamine, phosphatidylethanolamine with hydroxy fatty acids, diphosphatidylglycerol, phosphatidylinositol and two unidentified phospholipids. The genomic DNA G+C content was 73.8 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain YIM 75948T belonged in the genus Actinokineospora and that its closest relative among recognized species was Actinokineospora fastidiosa DSM 43855T (97.6 % sequence similarity). The mean level of DNA–DNA relatedness between the novel strain and A. fastidiosa DSM 43855T was, however, only 47.8 %. Based on the phenotypic, chemotaxonomic and phylogenetic data and the results of the DNA–DNA hybridizations, strain YIM 75948T represents a novel species of the genus Actinokineospora for which the name Actinokineospora soli sp. nov. is proposed. The type strain is YIM 75948T ( = JCM 17695T = DSM 45613T). The description of the genus Actinokineospora is emended to reflect the fact that the genomic DNA G+C contents of A. fastidiosa DSM 43855T and the type strain of Actinokineospora soli sp. nov. recorded in the present study fell above the range given in previous descriptions of this genus.

scholarly journals Description of Thalassotalea piscium gen. nov., sp. nov., isolated from flounder (Paralichthys olivaceus), reclassification of four species of the genus Thalassomonas as members of the genus Thalassotalea gen. nov. and emended description of the genus Thalassomonas

2014 ◽  
Vol 64 (Pt_4) ◽  
pp. 1223-1228 ◽  
Author(s):  
Yunhui Zhang ◽  
Kaihao Tang ◽  
Xiaochong Shi ◽  
Xiao-Hua Zhang
Keyword(s):  
Type Strain ◽  
Type Species ◽  
Sequence Similarity ◽  
Paralichthys Olivaceus ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Emended Description ◽  
Type Strains

A Gram-staining-negative, aerobic, rod-shaped bacterium, designated strain T202T, was isolated from the gill of a cultured flounder (Paralichthys olivaceus). Based on 16S rRNA gene sequence similarity, strain T202T was a member of the family Colwelliaceae and shared 93.32–96.58 % similarity with type strains of all members of the most closely related genus Thalassomonas . Phylogenetically, the isolate shared a root with the type strains of four marine species, Thalassomonas agariperforans M-M1T, Thalassomonas agarivorans TMA1T, Thalassomonas loyana CBMAI 722T and Thalassomonas ganghwensis JC2041T. Optimal growth occurred in the presence of 2–4 % (w/v) NaCl, at pH 7.0–8.0 and at 28 °C. Ubiquinone 8 (Q-8) was the predominant respiratory quinone. The major fatty acids were C16 : 0, summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c), C16 : 1ω9c and C17 : 1ω8c. The major polar lipids were phosphatidylethanolamine and phosphatidylglycerol. The DNA G+C content of strain T202T was 37 mol%. On the basis of polyphasic analysis, especially the phylogenetic relationships and the lower DNA G+C content, strain T202T is considered to represent a novel species in a new genus, for which the name Thalassotalea piscium gen. nov., sp. nov. is proposed. The type strain of Thalassotalea piscium is T202T ( = JCM 18590T = DSM 26287T = KCTC 32144T). Because Thalassomonas agariperforans M-M1T, Thalassomonas agarivorans TMA1T, Thalassomonas loyana CBMAI 722T and Thalassomonas ganghwensis JC2041T formed a phylogenetic group together with strain T202T that was clearly separated from other known strains of Thalassomonas , these four species are reclassified as members of the genus Thalassotalea as Thalassotalea agariperforans comb. nov. (type strain M-M1T = KCTC 23343T = CCUG 60020T), Thalassotalea agarivorans comb. nov. (type strain TMA1T = BCRC 17492T = JCM 13379T = DSM 19706T), Thalassotalea loyana comb. nov. (type strain CBMAI 722T = LMG 22536T) and Thalassotalea ganghwensis comb. nov. (type strain JC2041T = IMSNU 14005T = KCTC 12041T = DSM 15355T). The type species of the genus Thalassotalea is Thalassotalea ganghwensis gen. nov., comb. nov. An emended description of the genus Thalassomonas is also proposed.

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