scholarly journals Agaribacter marinus gen. nov., sp. nov., an agar-degrading bacterium from surface seawater

2014 ◽  
Vol 64 (Pt_7) ◽  
pp. 2416-2423 ◽  
Author(s):  
Maki Teramoto ◽  
Miyuki Nishijima

A Gram-stain-negative, motile, mesophilic, aerobic, rod-shaped bacterium, strain 8-8T, was isolated from surface seawater at Muroto, Kochi, Japan. The strain exhibited agar-degrading activity. Phylogenetic analyses based on 16S rRNA gene sequences showed that the strain fell within the family Alteromonadaceae and clustered distantly with members of the genus Glaciecola (≤94.0 % similarity). The DNA G+C content was 41.8 mol%. The major fatty acids were C16 : 1ω7c and/or iso-C15 : 0 2-OH, C16 : 0 and C18 : 1ω7c and the major hydroxy fatty acid was C12 : 0 3-OH. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and an unidentified polar lipid; lysophosphatidylethanolamine and unidentified polar lipids were found as minor components. The major quinone was Q-8. On the basis of phenotypic, genotypic and chemotaxonomic data, strain 8-8T represents a novel species of a new genus, for which the name Agaribacter marinus gen. nov., sp. nov. is proposed. The type strain of Agaribacter marinus is 8-8T ( = NBRC 110023T = LMG 28167T).

2015 ◽  
Vol 65 (Pt_3) ◽  
pp. 799-804 ◽  
Author(s):  
Maki Teramoto ◽  
Miyuki Nishijima

A Gram-stain-negative, non-motile, mesophilic, aerobic, rod-shaped or spherical bacterium, strain 2A-7T, was isolated from surface seawater at Muroto city, Kochi prefecture, Japan. The strain produced a pigment(s), the absorption spectrum of which closely resembled that of β-carotene. Phylogenetic analyses based on 16S rRNA gene sequences showed that the strain fell within the family Flavobacteriaceae and clustered distantly with the type strains of species of the genus Lutibacter (up to 93.9 % similarity). The DNA G+C content was 34.1 mol%. The major fatty acids were summed feature 3 (iso-C15 : 0 2-OH and/or C16 : 1ω7c), iso-C17 : 0 3-OH and iso-C15 : 0 3-OH. The major polar lipids were phosphatidylethanolamine and three unidentified lipids. Menaquinone 6 was detected as the sole isoprenoid quinone. On the basis of phenotypic, genotypic and chemotaxonomic data, strain 2A-7T represents a novel genus and species, for which the name Flavicella marina gen. nov., sp. nov. is proposed. The type strain of Flavicella marina is 2A-7T ( = NBRC 110145T = KCTC 42197T).


2014 ◽  
Vol 64 (Pt_12) ◽  
pp. 4016-4020 ◽  
Author(s):  
Maki Teramoto ◽  
Miyuki Nishijima

A Gram-stain-negative, non-motile, mesophilic, aerobic, rod-shaped bacterium, designated strain 2-3T, was isolated from surface seawater at Muroto city, Kochi prefecture, Japan. This strain grew well with starch. Phylogenetic analyses based on 16S rRNA gene sequences showed that the strain fell within the family Rhodobacteraceae and that the strain was related most closely to the genus Pacificibacter (94.0 % sequence similarity to the type strain). The DNA G+C content was 52.4 mol%. The major fatty acids were C18 : 1ω7c, C14 : 0 and C16 : 0. The major polar lipids were phosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, one unidentified lipid, one unidentified aminolipid and one unidentified phospholipid. The major isoprenoid quinone was Q-10. Strain 2-3T did not grow at 4 or 35 °C, while the type strain of the type species of the genus Pacificibacter grows at both temperatures. From the taxonomic data obtained in this study, it is proposed that strain 2-3T be placed into a novel genus and species named Amylibacter marinus gen. nov., sp. nov. in the family Rhodobacteraceae . The type strain of Amylibacter marinus is 2-3T ( = NBRC 110140T = LMG 28364T).


2012 ◽  
Vol 62 (Pt_12) ◽  
pp. 3030-3035 ◽  
Author(s):  
Eu Jin Chung ◽  
Tae Soon Park ◽  
Che Ok Jeon ◽  
Young Ryun Chung

A novel bacterial strain, YC7001T, was isolated from the rhizosphere soil of rice collected at Jinju, Korea, and was characterized using a polyphasic approach. Cells of strain YC7001T were Gram-negative-staining, yellow-pigmented, rod-shaped, aerobic, heterotrophic and non-motile. Strain YC7001T grew optimally at 25–30 °C, pH 5.0–8.0 and degraded gelatin, cellulose and chitin. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain YC7001T belonged to the genus Chitinophaga in the family Chitinophagaceae . The most closely related species were Chitinophaga sancti NBRC 15057T (96.9 %), Chitinophaga ginsengisoli Gsoil 052T (95.9 %), Chitinophaga pinensis DSM 2588T (95.7 %), Chitinophaga filiformis IFO 15056T (95.7 %) and Chitinophaga niabensis JS13-10T (95.0 %). The DNA–DNA relatedness value of strain YC7001T with C. sancti NBRC 15057T was 15.2±0.6 %. Strain YC7001T contained MK-7 as the major menaquinone and homospermidine as the major polyamine. The major fatty acids of strain YC7001T were C15 : 0 iso, C16 : 1ω5c and C17 : 0 iso 3-OH. The polar lipids were phosphatidylethanolamine, unknown aminolipids and unknown lipids. The total genomic DNA G+C content was 41.3 mol%. On the basis of phenotypic, chemotaxonomic and phylogenetic analyses, strain YC7001T represents a novel species of the genus Chitinophaga , in the family Chitinophagaceae , for which the name Chitinophaga oryziterrae sp. nov. is proposed. The type strain is YC7001T ( = KACC 14533T = JCM 16595T).


2020 ◽  
Vol 70 (11) ◽  
pp. 5620-5626 ◽  
Author(s):  
Guanghua Wang ◽  
Shuailiang Xu ◽  
Ge Dang ◽  
Jianfeng Liu ◽  
Hongfei Su ◽  
...  

A novel Gram-stain-negative, non-endospore-forming, non-motile, aerobic bacterium (strain R33T) was isolated from coral Porites lutea and subjected to a polyphasic taxonomic study. The G+C content was 44.5 mol%. The only detected respiratory quinone was menaquinone 6 (MK-6). The major cellular fatty acids were iso-C15 : 0 and iso-C15 : 1 ω6c. The major polar lipids were phosphatidylethanolamine and two unidentified lipids. Global alignment based on 16S rRNA gene sequences indicated that strain R33T shares the highest sequence identity of 93.2 % with Muriicola marianensis A6B8T in the family Flavobacteriaceae . Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain R33T forms a distinct branch in a stable clade comprising strain R33T and members of the genera Muriicola , Robiginitalea , Eudoraea and Zeaxanthinibacter . The phylogenomic analysis also supported this 16S rRNA gene-based phylogenetic result. Comparative genomic analysis indicated that strain R33T is rich in AraC-type DNA-binding domain-containing protein-coding genes, which means the regulation of carbon utilization is very complex. Low 16S rRNA gene identity, different polar lipids and/or cellular fatty acid profiles could readily distinguish strain R33T from any validly published type strains. Therefore, strain R33T is suggested to represent a new species in a new genus, for which the name Poritiphilus flavus gen. nov., sp. nov. is proposed. The type strain is R33T (=MCCC 1K03853T=KCTC 72443T).


Author(s):  
Alvaro S. Villalobos ◽  
Jutta Wiese ◽  
Erik Borchert ◽  
Tanja Rahn ◽  
Beate M. Slaby ◽  
...  

Strain Llam7T was isolated from microbial mat samples from the hypersaline lake Salar de Llamará, located in Taracapá region in the hyper-arid core of the Atacama Desert (Chile). Phenotypic, chemotaxonomic and genomic traits were studied. Phylogenetic analyses based on 16S rRNA gene sequences assigned the strain to the family Micromonosporaceae with affiliation to the genera Micromonospora and Salinispora . Major fatty acids were C17 : 1ω8c, iso-C15 : 0, iso-C16 : 0 and anteiso-C17 : 0. The cell walls contained meso-diaminopimelic acid and ll-2,6 diaminopimelic acid (ll-DAP), while major whole-cell sugars were glucose, mannose, xylose and ribose. The major menaquinones were MK-9(H4) and MK-9(H6). As polar lipids phosphatidylglycerol, phosphatidylethanolamine, diphosphatidylglycerol and several unidentified lipids, i.e. two glycolipids, one aminolipid, three phospholipids, one aminoglycolipid and one phosphoglycolipid, were detected. Genome sequencing revealed a genome size of 6.894 Mb and a DNA G+C content of 71.4 mol%. Phylogenetic analyses with complete genome sequences positioned strain Llam7T within the family Micromonosporaceae forming a distinct cluster with Micromonospora (former Xiangella ) phaseoli DSM 45730T. This cluster is related to Micromonospora pelagivivens KJ-029T, Micromonospora craterilacus NA12T, and Micromonospora craniellae LHW63014T as well as to all members of the former genera Verrucosispora and Jishengella , which were re-classified as members of the genus Micromonospora , forming a clade distinct from the genus Salinispora . Pairwise whole genome average nucleotide identity (ANI) values, digital DNA–DNA hybridization (dDDH) values, the presence of the diamino acid ll-DAP, and the composition of whole sugars and polar lipids indicate that Llam7T represents a novel species, for which the name Micromonospora tarapacensis sp. nov. is proposed, with Llam7T (=DSM 109510T,=LMG 31023T) as the type strain.


2020 ◽  
Vol 70 (3) ◽  
pp. 2008-2015 ◽  
Author(s):  
Bit Han ◽  
Minji Kim ◽  
Ki-Eun Lee ◽  
Byoung-Hee Lee ◽  
Eun-Young Lee ◽  
...  

A novel bacterium, designated strain PS13T, was isolated from marine sediment collected from the coast of Jeju Island. Strain PS13T was a Gram stain-negative, catalase- and oxidase-positive, aerobic, yellow-pigmented, motile by gliding, and rod-shaped bacterium. Strain PS13T grew optimally at 25 °C and pH 8.0 and in the presence of 3 % (w/v) NaCl. Results of phylogenetic analysis based on 16S rRNA gene sequences showed that strain PS13T belonged to the genus Formosa and was closely related to Formosa algae KMM3553T (98.3 % sequence similarity). The DNA–DNA relatedness (17.3–21.8 %) and average nucleotide identity (83.6–84.6 %) values clearly indicated that strain PS13T represents a distinct species of the genus Formosa . The major fatty acids were C15 : 0 iso, C16 : 1 ω6c/C16 : 1 ω7c and C15 : 1 iso G. The genomic DNA G+C content of the strain PS13T was 32.2 mol%. On the basis of polyphasic characteristics, it is suggested that strain PS13T be assigned to the genus Formosa as the type strain of a novel species, for which the name Formosa sediminum PS13T (=KCCM 43301T=CECT 9918T) sp. nov. is proposed.


2014 ◽  
Vol 64 (Pt_12) ◽  
pp. 3994-4000 ◽  
Author(s):  
Xin Yuan ◽  
Yuichi Nogi ◽  
Xu Tan ◽  
Ren-Gang Zhang ◽  
Jie Lv

A translucent, white, Gram-reaction-negative, facultatively anaerobic, non-flagellated, slightly curved or curved bacterial strain, designated YT8T, was isolated from the fresh water of the Maotai section of Chishui River, China. Cells were catalase-positive and oxidase-positive. Phylogenetic analyses of 16S rRNA gene sequences revealed that strain YT8T is a member of the genus Arenimonas with similarity to other members of this genus ranging from 93.7 to 95.0 %. The major isoprenoid quinone was ubiquinone 8 (Q-8), major polar lipids were phosphatidylethanolamine, one unidentified aminolipid, two unidentified phospholipids and two unidentified polar lipids, while major fatty acids were iso-C15 : 0, iso-C14 : 0 and anteiso-C15 : 0. The DNA G+C content of strain YT8T was 66.6 mol%. On the basis of phenotypic, phylogenetic and genotypic features studied, strain YT8T is suggested to represent a novel species of the genus Arenimonas , for which the name Arenimonas maotaiensis sp. nov. is proposed. The type strain is YT8T ( = CGMCC 1.12726T = JCM 19710T).


2013 ◽  
Vol 63 (Pt_3) ◽  
pp. 905-912 ◽  
Author(s):  
Yeon-Ju Kim ◽  
Ngoc-Lan Nguyen ◽  
Hang-Yeon Weon ◽  
Deok-Chun Yang

A Gram-negative bacterium, designated DCY13T, was isolated from soil of a ginseng field in South Korea. Comparative analysis of 16S rRNA gene sequences showed that strain DCY13T shared the highest sequence similarity (95.0 %) with Sediminibacterium salmoneum NBRC 103935T and 87.6–91.4 % sequence similarity with other members of the family Chitinophagaceae . Cells were non-spore-forming rods, catalase- and oxidase-positive, motile by gliding and facultatively anaerobic. The only respiratory quinone was menaquinone 7 (MK-7) and the major fatty acids were iso-C17 : 0 3-OH, iso-C15 : 0 and iso-C15 : 1 G. The G+C content of the genomic DNA was 47.5±1.0 mol%. In addition to phosphatidylethanolamine, the major polar lipids were two unidentified aminophospholipids, one unidentified aminolipid and three unidentified polar lipids. The major cell-wall sugars were ribose, xylose and galactose. It is proposed that strain DCY13T represents a novel species in the genus Sediminibacterium , for which the name Sediminibacterium ginsengisoli sp. nov. is proposed. The type strain is DCY13T ( = KCTC 12833T  = JCM 15794T  = DSM 22335T). Emended descriptions of the genus Sediminibacterium and of Sediminibacterium salmoneum are also proposed.


2014 ◽  
Vol 64 (Pt_1) ◽  
pp. 165-168 ◽  
Author(s):  
Keshao Liu ◽  
Shuhui Li ◽  
Nianzhi Jiao ◽  
Kai Tang

A novel Gram-negative, yellow-pigmented, aerobic, motile by gliding, rod-shaped marine bacterium (JLT2011T) was isolated from surface seawater. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain JLT2011T could be assigned to the genus Gramella and was most closely related to Gramella gaetbulicola , with 96.2 % similarity. The genomic DNA G+C content was 42.1 %. The predominant fatty acids were C16 : 0, iso-C15 : 0, C18 : 0 and summed feature 3 (C16 : 1ω6c/C16 : 1ω7c). The major menaquinone was MK-6. The major components of the polar lipid profile were phosphatidylglycerol, diphosphatidylglycerol and sphingoglycolipid. On the basis of phenotypic, genotypic and taxonomic data presented, strain JLT2011T is considered to represent a novel species of the genus Gramella , for which the name Gramella flava sp. nov. is proposed; the type strain is JLT2011T ( = CGMCC 1.12375T = LMG 27360T).


2014 ◽  
Vol 64 (Pt_9) ◽  
pp. 2998-3004 ◽  
Author(s):  
En-Min Zhou ◽  
Tian-Tian Yu ◽  
Lan Liu ◽  
Hong Ming ◽  
Yi-Rui Yin ◽  
...  

Strains YIM 77562T and YIM 77580, two novel Gram-staining-positive, filamentous bacterial isolates, were recovered from the Rehai geothermal field, Tengchong, Yunnan province, south-west China. Good growth was observed at 50–55 °C and pH 7.0. Aerial mycelium was absent on all media tested. Substrate mycelium was well-developed, long and moderately flexuous, and formed abundant, single, warty, ornamented endospores. Phylogenetic analysis of the 16S rRNA gene sequences of the two strains indicated that they belong to the family Thermoactinomycetaceae . Similarity levels between the 16S rRNA gene sequences of the two strains and those of type strains of members of the Thermoactinomycetaceae were 88.33–93.24 %; the highest sequence similarity was with Hazenella coriacea DSM 45707T. In both strains, the predominant menaquinone was MK-7, the diagnostic diamino acid was meso-diaminopimelic acid and the major cellular fatty acids were iso-C14 : 0, iso-C15 : 0 and iso-C16 : 0. The major polar lipids were diphosphatidylglycerol, phosphatidylmethylethanolamine, unidentified polar lipids and unidentified phospholipids. The genomic DNA G+C contents of strains YIM 77562T and YIM 77580 were 45.5 and 44.2 mol%, respectively. DNA–DNA relatedness data suggest that the two isolates represent a single species. Based on phylogenetic analyses and physiological and biochemical characteristics, it is proposed that the two strains represent a single novel species in a new genus, Geothermomicrobium terrae gen. nov., sp. nov. The type strain of Geothermomicrobium terrae is YIM 77562T ( = CCTCC AA 2011022T = JCM 18057T).


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