1
|
Ha SH, Lee MS, Park MJ, Kwon KK, Park JS. Roseovarius conchicola sp. nov. and Aliiroseovarius conchicola sp. nov., isolated from the marine conch Reishia bronni. Int J Syst Evol Microbiol 2025; 75. [PMID: 40117186 DOI: 10.1099/ijsem.0.006725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2025] Open
Abstract
The intertidal zone is an area located between the marine environment and the terrestrial environment and is exposed to various stresses. To investigate the mutualistic relationship between hosts and symbiotic micro-organisms inhabiting the intertidal zone, strains 2305UL8-3T and 2305UL8-7T were isolated from Reishia bronni, a species living in the intertidal zone of Ulleungdo Island, South Korea. Both strains are Gram-stain-negative, catalase- and oxidase-positive and facultatively anaerobic. Strains 2305UL8-3T and 2305UL8-7T grow optimally at 30.0 °C and 28.0-30.0 °C, respectively, under conditions of pH 8.0 and 3.0 % (w/v) NaCl. They have Q-10 as the primary quinone, and their common main fatty acids are C16:0 and summed feature 8 (C18:1 ω7c and/or C18:1 ω6c). Additionally, their primary polar lipids include phosphatidylcholine and phosphatidylglycerol. The two novel strains have an arsenic reduction pathway that reduces the oxidation state of arsenic and are expected to influence environmental regulation processes through the catabolic sulphate reduction system. Based on these characteristics, they exhibit resistance potential to environmental stresses, specifically arsenic exposure in the intertidal zone, where arsenic contamination is often associated with pollution and tidal fluctuations. Analysing the 16S rRNA gene sequence similarity, strain 2305UL8-3T shared 96.60 % similarity with Roseovarius faecimaris MME-070T, while strain 2305UL8-7T showed 98.13 % similarity with Aliiroseovarius sediminilitoris M-M10T. Polyphasic analysis revealed that strains 2305UL8-3T and 2305UL8-7T should be identified as novel species within the genera Roseovarius and Aliiroseovarius, respectively. Therefore, Roseovarius conchicola sp. nov. with the type strain 2305UL8-3T (=KCTC 8475T=MCCC 1K09523T=JCM 37202T) and Aliiroseovarius conchicola sp. nov. with the type strain 2305UL8-7T (=KCTC 8476T=MCCC 1K09524T=JCM 37203T) are proposed.
Collapse
Affiliation(s)
- Seung Hee Ha
- Department of Biological Sciences and Biotechnology, Hannam University, Daejeon 34054, Republic of Korea
| | - Min Seo Lee
- Department of Biological Sciences and Biotechnology, Hannam University, Daejeon 34054, Republic of Korea
- Marine Biotechnology Research Center, Korea Institute of Ocean Science & Technology, 385, Haeyang-ro, Yeongdo-gu, Busan, 49111, Republic of Korea
| | - Mi-Jeong Park
- Marine Biotechnology Research Center, Korea Institute of Ocean Science & Technology, 385, Haeyang-ro, Yeongdo-gu, Busan, 49111, Republic of Korea
| | - Kae Kyoung Kwon
- Marine Biotechnology Research Center, Korea Institute of Ocean Science & Technology, 385, Haeyang-ro, Yeongdo-gu, Busan, 49111, Republic of Korea
- KIOST School, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Jin-Sook Park
- Department of Biological Sciences and Biotechnology, Hannam University, Daejeon 34054, Republic of Korea
| |
Collapse
|
2
|
Lee MW, Baek JH, Kim JM, Bayburt H, Choi BJ, Jia B, Jeon CO. Roseovarius phycicola sp. nov. and Roseovarius rhodophyticola sp. nov., isolated from marine red algae. Int J Syst Evol Microbiol 2024; 74:006574. [PMID: 39527472 PMCID: PMC11554077 DOI: 10.1099/ijsem.0.006574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Accepted: 10/21/2024] [Indexed: 11/16/2024] Open
Abstract
Two Gram-stain-negative, strictly aerobic, non-motile, rod-shaped bacteria, designated as strains S88T and W115T, exhibiting catalase- and oxidase-positive reactions, were isolated from marine red algae in South Korea. Strain S88T exhibited growth at 20-30 °C, pH 6.0-9.0 and 2.0-5.0% (w/v) NaCl, while strain W115T grew at 20-30 °C, pH 7.0-9.0 and 2.0-5.0% (w/v) NaCl. Strain S88T contained summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c), C16 : 0 and C16 : 0 2-OH as major fatty acids (>5%), with major polar lipids being phosphatidylglycerol, phosphatidylcholine, an unidentified phospholipid, an unidentified aminolipid and two unidentified lipids. Strain W115T contained summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c) and C16 : 0 as major fatty acids (>5%), with major polar lipids including phosphatidylglycerol, phosphatidylcholine, an unidentified phospholipid, an unidentified aminolipid and unidentified lipids. Ubiquinone-10 was the sole respiratory quinone in both strains, and the genomic DNA G+C contents were 57.0% for strain S88T and 56.5% for strain W115T. Despite 99.86% 16S rRNA gene sequence similarity, strains S88T and W115T shared 88.8% average nucleotide identity (ANI) and 36.8% digital DNA-DNA hybridization (dDDH) value, indicating different species. Phylogenetic and phylogenomic analyses based on 16S rRNA gene and genome sequences, respectively, revealed that strains S88T and W115T formed a phylogenetic lineage within the genus Roseovarius. ANI and dDDH values of both strains with other type strains were less than 73.7 and 20.3%, respectively, confirming that they represent novel species. Based on phenotypic, chemotaxonomic and molecular characteristics, strains S88T and W115T represent two novel species of the genus Roseovarius, for which the names Roseovarius phycicola sp. nov. (S88T =KACC 23423T =JCM 36647T) and Roseovarius rhodophyticola sp. nov. (W115T =KACC 23690T =JCM 36651T) are proposed, respectively.
Collapse
Affiliation(s)
- Min Woo Lee
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Ju Hye Baek
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jeong Min Kim
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hülya Bayburt
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Byeong Jun Choi
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Baolei Jia
- Xianghu Laboratory, Hangzhou 311231, PR China
| | - Che Ok Jeon
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| |
Collapse
|
3
|
Hong YW, Jang GI, Kim SY, Choi JY, Kim BJ, Shin DY, Kang JK, Kim SK, Cho BC, Hwang CY. Roseovarius pelagicus sp. nov., a facultatively anaerobic bacterium with potential for degrading polypropylene, isolated from Arctic seawater. Int J Syst Evol Microbiol 2023; 73. [PMID: 37561014 DOI: 10.1099/ijsem.0.005999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023] Open
Abstract
A Gram-stain-negative, facultatively anaerobic, non-motile, rod-shaped bacterial strain, designated HL-MP18T, was isolated from Arctic seawater after a prolonged incubation employing polypropylene as the sole carbon source. Phylogenetic analyses of the 16S rRNA gene sequence revealed that strain HL-MP18T was affiliated to the genus Roseovarius with close relatives Roseovarius carneus LXJ103T (96.8 %) and Roseovarius litorisediminis KCTC 32327T (96.5 %). The complete genome sequence of strain HL-MP18T comprised a circular chromosome of 3.86 Mbp and two circular plasmids of 0.17 and 0.24 Mbp. Genomic comparisons based on average nucleotide identity and digital DNA-DNA hybridization showed that strain HL-MP18T was consistently discriminated from its closely related taxa in the genus Roseovarius. Strain HL-MP18T showed optimal growth at 25 °C, pH 7.0 and 2.5 % (w/v) sea salts. The major cellular fatty acids were C18 : 1 ω6c and/or C18 : 1 ω7c (49.6 %), C19 : 0 cyclo ω8c (13.5 %), and C16 : 0 (12.8 %). The major respiratory quinone was ubiquinone-10. The polar lipids consisted of phosphatidylcholine, phosphatidylglycerol, an unidentified aminolipid and three unidentified lipids. The genomic DNA G+C content of the strain was 59.2 mol%. The phylogenetic, genomic, phenotypic and chemotaxonomic results indicate that strain HL-MP18T is distinguishable from the recognized species of the genus Roseovarius. Therefore, we propose that strain HL-MP18T represents a novel species belonging to the genus Roseovarius, for which the name Roseovarius pelagicus sp. nov. is proposed. The type strain is HL-MP18T (=KCCM 90405T=JCM 35639T).
Collapse
Affiliation(s)
- Yeon Woo Hong
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Gwang Il Jang
- Aquatic Disease Control Division, National Fishery Products Quality Management Service, Busan 46083, Republic of Korea
| | - Soo Yoon Kim
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Jy Young Choi
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Bok Jin Kim
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong Young Shin
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin Kyeong Kang
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Byung Cheol Cho
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
- Saemangeum Environmental Research Center, Kunsan National University, Kunsan 54150, Republic of Korea
| | - Chung Yeon Hwang
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| |
Collapse
|
4
|
Sun X, Lin D, Han Y, Sun J, Ye J, Chen B, Tang K. Roseovarius carneus sp. nov., a novel bacterium isolated from a coastal phytoplankton bloom in Xiamen. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
A Gram-stain-negative, non-motile, ovoid or short rod shaped and aerobic marine bacterium, designated as strain LXJ103T, was isolated from a coastal phytoplankton bloom in Xiamen, PR China. Cells were oxidase- and catalase-positive. Strain LXJ103T grew at 4–40 °C (optimum, 28–37 °C), at pH 6–10 (optimum, pH 8.5) and with 1–15 % (w/v) NaCl (optimum, 3 %). The major cellular fatty acids (>10 %) were iso-C18 : 1
ω7c/iso-C18 : 1
ω6c (70.2 %) and C16 : 0 (10.3 %). The following polar lipids were found to be present: phosphatidylglycerol, phosphatidylethanolamine, two unidentified phospholipids and five unknown glycolipids. The predominant respiratory quinone was ubiquinone-10. Strain LXJ103T exhibited the highest 16S rRNA gene sequence similarity to
Roseovarius litorisediminis
D1-W8T (96.97 %). The phylogenetic trees based on 16S rRNA gene sequences showed that strain LXJ103T was a member of the genus
Roseovarius
. The draft genome size of strain LXJ103T is 3.05 Mb with a genomic G+C content of 61.22 mol%. The digital DNA–DNA genome hybridization value of strain LXJ103T compared with the most similar type strain
R. litorisediminis
CECT 8287T was 18.80 %. The average nucleotide identity value between strain LXJ103T and
R. litorisediminis
CECT 8287T was 72.60 %. On the basis of polyphasic data, strain LXJ103T represents a novel species of the genus
Roseovarius
, for which the name Roseovarius carneus sp. nov. is proposed. The type strain is LXJ103T (=CGMCC 1.19168T=MCCC 1K06527T=JCM 34778T).
Collapse
Affiliation(s)
- Xueqiong Sun
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, PR China
| | - Dan Lin
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, PR China
| | - Yu Han
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, PR China
| | - Jia Sun
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, PR China
| | - Jianing Ye
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, PR China
| | - Beihan Chen
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, PR China
| | | |
Collapse
|
5
|
Slobodkina G, Ratnikova N, Merkel A, Kevbrin V, Kuchierskaya A, Slobodkin A. Lithoautotrophic lifestyle of the widespread genus Roseovarius revealed by physiological and genomic characterization of Roseovarius autotrophicus sp. nov. FEMS Microbiol Ecol 2022; 98:6724241. [PMID: 36166357 DOI: 10.1093/femsec/fiac113] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 07/13/2022] [Accepted: 09/23/2022] [Indexed: 12/14/2022] Open
Abstract
The genus Roseovarius, a member of the ecologically important Roseobacter-clade, is widespread throughout the world. A facultatively anaerobic lithoautotrophic bacterium (strain SHN287T), belonging to the genus Roseovarius, was isolated with molecular hydrogen as an electron donor and nitrate as an electron acceptor from a terrestrial mud volcano. Strain SHN287T possessed metabolic features not reported for Roseovarius such as chemolithoautotrophic growth with oxidation of molecular hydrogen or sulfur compounds, anaerobic growth and denitrification. Based on the phenotypic and phylogenetic characteristics, the new isolate is considered to represent a novel species of the genus Roseovarius, for which the name Roseovarius autotrophicus sp. nov. is proposed. The type strain is SHN287T (= KCTC 15916T = VKM B-3404T). An amended description of the genus Roseovarius is provided. Comparison of 46 Roseovarius genomes revealed that (i) a full set of genes for the Calvin-Benson cycle is present only in two strains: SHN287T and Roseovarius salinarum; (ii) respiratory H2-uptake [NiFe] hydrogenases are specific for a phylogenetically distinct group, including SHN287T-related strains; (iii) the Sox enzymatic complex is encoded in most of the studied genomes; and (iv) denitrification genes are widespread and randomly distributed among the genus. The metabolic characteristics found in R. autotrophicus sp. nov. expand the ecological role of the genus Roseovarius.
Collapse
Affiliation(s)
- Galina Slobodkina
- Winogradsky Institute of Microbiology, FRC Biotechnology Russian Academy of Sciences, Leninskiy Prospect, 33, bld. 2, 119071, Moscow, Russia
| | - Nataliya Ratnikova
- Winogradsky Institute of Microbiology, FRC Biotechnology Russian Academy of Sciences, Leninskiy Prospect, 33, bld. 2, 119071, Moscow, Russia
| | - Alexander Merkel
- Winogradsky Institute of Microbiology, FRC Biotechnology Russian Academy of Sciences, Leninskiy Prospect, 33, bld. 2, 119071, Moscow, Russia
| | - Vadim Kevbrin
- Winogradsky Institute of Microbiology, FRC Biotechnology Russian Academy of Sciences, Leninskiy Prospect, 33, bld. 2, 119071, Moscow, Russia
| | | | - Alexander Slobodkin
- Winogradsky Institute of Microbiology, FRC Biotechnology Russian Academy of Sciences, Leninskiy Prospect, 33, bld. 2, 119071, Moscow, Russia
| |
Collapse
|
6
|
Sun X, Wang F, Liu Y, Lu Y. Roseovarius gahaiensis sp. nov., isolated from Gahai Saline Lake, PR China. Int J Syst Evol Microbiol 2020; 70:5330-5336. [PMID: 32897847 DOI: 10.1099/ijsem.0.004411] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, aerobic, non-motile and ovoid- to rod-shaped bacterial strain, designated GH877T, was isolated from a water sample of Gahai saline lake in Qaidam Basin,PR China. The isolate grew at 5-45 °C, pH 6.0-9.0 (optima, 37 °C and pH 7.5) and with 0.5-20 % (w/v) NaCl (optimum, 2.0 %). The neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain GH877T belonged to the genus Roseovarius, and had highest 16S rRNA gene sequence similarity of 97.7 % to Roseovarius pacificus 81-2T, followed by Roseovarius halotolerans HJ50T (97.5 %) and Roseovarius litoreus GSW-M15T (96.8 %). Genome sequencing revealed a genome size of 3 378 519 bp and a G+C content of 59.8 mol %. Up-to-date bacterial core gene set analysis indicated that strain GH877T represents one independent lineage with R. pacificus DSM29589T. The average nucleotide identity values of GH877T with R. pacificus 81-2T and R. halotolerans HJ50T are 80.7 and 77.3 %, respectively. In silico DNA-DNA hybridization values between strain GH877T and R. pacificus 81-2T and R. halotolerans HJ50T are 23.2 and 20.0 %, respectively. Q-10 was the predominant respiratory quinone and summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c) and C16 : 0 were the major cellular fatty acids. The polar lipids of strain GH877T consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine and two unidentified phosphoglycolipids. Based on polyphasic taxonomic analysis, strain GH877T is proposed to represent a novel species of the genus Roseovarius, for which the name Roseovarius gahaiensis sp. nov. is proposed. (type strain GH877T=CGMCC 1.13971T=KCTC 72576T).
Collapse
Affiliation(s)
- Xia Sun
- Institute of Shandong River and Wetlands, Jinan 271100, PR China
| | - Fang Wang
- China Institute of Water Resources and Hydropower Research, Beijing 100038, PR China
| | - Yang Liu
- China Institute of Water Resources and Hydropower Research, Beijing 100038, PR China
| | - Ying Lu
- Institute of Shandong River and Wetlands, Jinan 271100, PR China
| |
Collapse
|
7
|
Lu L, Zhang Y, Peng X, Liu J, Qin K, Peng F. Roseovarius arcticus sp. nov., a bacterium isolated from Arctic marine sediment. Int J Syst Evol Microbiol 2020; 70:2072-2078. [DOI: 10.1099/ijsem.0.004018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An aerobic, Gram-stain-negative, motile, rod or long-rod-shaped bacterial isolate, strain MK6-18T, was isolated from a marine sediment sample from Kongsfjorden, Arctic. The bacterium grew optimally at 20 °C, pH 7.0 and in the presence of 1.0–2.0 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain MK6-18T belonged to the genus
Roseovarius
. Its closest phylogenetic neighbour was
Roseovarius nanhaiticus
NH52JT showing 96.97 % 16S rRNA gene sequence similarity. The genome of strain MK6-18T is 4.2 Mb long in size with a G+C content of 59.5 mol%. The average nucleotide identity value between the genomes of strain MK6-18T and
Roseovarius nanhaiticus
NH52JT, was 78.0 %. Similar to other species of the genus
Roseovarius
, strain MK6-18T had ubiquinone 10 as the predominant ubiquinone and C12 : 0, C16 : 0, summed feature 3 (C16 : 1ω7c/ω6c) and summed feature 8 (C18 : 1ω7c/ω6c) as the major fatty acids. The polar lipid pattern consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidylcholine; one unidentified polar lipid, one unidentified aminolipid and one unidentified lipid were also detected. This is the first time that a member of the genus
Roseovarius
has been isolated from the Arctic, which may promote the study of the distribution characteristics and environmental adaptability of this genus. On the basis of the data provided here, strain MK6-18T should be classed as representing a novel species of the genus
Roseovarius
, for which the name Roseovarius arcticus sp. nov. is proposed. The type strain is MK6-18T (=CCTCC AB 2018219T=KCTC 72187T).
Collapse
Affiliation(s)
- Lu Lu
- China Center for Type Culture Collection (CCTCC), College of Life Sciences, Wuhan University, Wuhan 430072, PR China
| | - Yumin Zhang
- China Center for Type Culture Collection (CCTCC), College of Life Sciences, Wuhan University, Wuhan 430072, PR China
| | - Xiaoya Peng
- China Center for Type Culture Collection (CCTCC), College of Life Sciences, Wuhan University, Wuhan 430072, PR China
| | - Jia Liu
- China Center for Type Culture Collection (CCTCC), College of Life Sciences, Wuhan University, Wuhan 430072, PR China
| | - Kun Qin
- China Center for Type Culture Collection (CCTCC), College of Life Sciences, Wuhan University, Wuhan 430072, PR China
| | - Fang Peng
- China Center for Type Culture Collection (CCTCC), College of Life Sciences, Wuhan University, Wuhan 430072, PR China
| |
Collapse
|
8
|
Zhuang L, Luo L. Roseovarius spongiae sp. nov., a bacterium isolated from marine sponge. Int J Syst Evol Microbiol 2019; 70:274-281. [PMID: 31702535 DOI: 10.1099/ijsem.0.003750] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A taxonomic study was carried out on strain HN-E21T, which was isolated from sponge collected from Yangpu Bay, Hainan, PR China. Cells of strain HN-E21T were Gram-stain-negative, non-spore-forming, tumbling-motile, ovoid- to rod-shaped and pale-yellow-pigmented that could grow at 15-42 °C (optimum, 37 °C), at pH 6-11 (pH 7) and in 0-14 % (w/v) NaCl (2-3 %). This isolate was positive for oxidase and catalase, but negative for hydrolysis of aesculin and gelatin. The phylogenetic tree based on 16S rRNA gene sequences showed that strain HN-E21T formed a clade with Pelagivirga sediminicola BH-SD19T, Pontibaca methylaminivorans GRP21T, Roseovarius antarcticus M-S13-148T, Roseovarius aquimarinus CAU1059T and Roseovarius nanhaiticus NH52JT within the family Rhodobacteraceae. Strain HN-E21T shared the highest similarity to Pelagivirga sediminicola BH-SD19T (95.5 %), followed by Roseovarius lutimaris 112T (95.3 %), Pelagicola litorisediminis D1-W8T (95.2 %), Roseovarius gaetbuli YM-20T (95.0 %) and Roseovarius marisflavi H50T (95.0 %). The dominant fatty acids were summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c) and C16:0. The major polar lipids comprised phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, three unidentified lipids and one unidentified phospholipid. The respiratory quinone was identified as Q-10. The G+C content of the genomic DNA was 66.4 mol%. Based on the phenotypic and phylogenetic data, strain HN-E21T represents a novel species of the genus Roseovarius, for which the name Roseovarius spongiae sp. nov. is proposed, with the type strain HN-E21T (=MCCC 1K03333T=LMG 30456T).
Collapse
Affiliation(s)
- Lingping Zhuang
- Fujian Province University Technology and Engineering Center for Marine Biomedical Resource Utilization, Xiamen Medical College, Xiamen, 361023, PR China
- Xiamen Key Laboratory of Marine Medicinal Natural Products and Cell Engineering, Xiamen Medical College, Xiamen, PR China
| | - Lianzhong Luo
- Xiamen Key Laboratory of Marine Medicinal Natural Products and Cell Engineering, Xiamen Medical College, Xiamen, PR China
- Fujian Province University Technology and Engineering Center for Marine Biomedical Resource Utilization, Xiamen Medical College, Xiamen, 361023, PR China
| |
Collapse
|
9
|
Pelagivirga dicentrarchi sp. nov., a member of the family Rhodobacteraceae isolated from the gut microflora of sea bass (Dicentrarchus labrax L.). Antonie van Leeuwenhoek 2019; 113:293-301. [PMID: 31583494 DOI: 10.1007/s10482-019-01337-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 09/24/2019] [Indexed: 10/25/2022]
Abstract
A Gram-stain negative, aerobic, non-flagellated, non-gliding, rod-shaped bacterium, designated strain YLY04T, was isolated from the gut microflora of a sea bass (Dicentrarchus labrax L.) collected from the coast of Yuanyao Wharf, Weihai, China. Growth was found to occur at pH 6.0-9.0 (optimum, 7.0-8.0), 4-37 °C (optimum, 28-30 °C) in the presence of 0-11.0% (w/v) NaCl (optimum, 3.0-4.0%). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain YLY04T is closely related to Pelagivirga sediminicola BH-SD19T and Roseovarius antarcticus M-S13-148T. Strain YLY04T contains ubiquinone-10 as the sole respiratory quinone and summed feature 8 (C18:1ω7c and/or C18:1ω6c), cyclo-C19:0ω8c, C16:0 and 11-methyl-C18:1ω7c as the major fatty acids. The polar lipids of strain YLY04T were found to consist of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, an unidentified aminolipid, an unidentified phospholipid and three unidentified lipids. The DNA G+C content was determined to be 62.7 mol%. The phenotypic, chemotaxonomic and phylogenetic properties, and genome analysis, indicated that strain YLY04T represents a novel species within the genus Pelagivirga, for which the name Pelagivirga dicentrarchi sp. nov. is proposed. The type strain is YLY04T (= MCCC 1H00334T = KCTC 62452T).
Collapse
|
10
|
Cha IT, Cho ES, Choi HJ, Roh SW, Seo MJ. Roseovarius faecimaris sp. nov., isolated from a tidal flat. Int J Syst Evol Microbiol 2019; 69:1465-1471. [PMID: 30882298 DOI: 10.1099/ijsem.0.003345] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, obligate aerobic, non-motile and rod-shaped bacterium, designated MME-070T, was isolated from a tidal flat near Muui-do, Incheon, Republic of Korea. This bacterium belonged to the Roseobacterclade within the family Rhodobacteraceae. The isolate grew at 20-40 °C, pH 7.0-9.0 with 1-5 % (w/v) NaCl. Optimal growth required 2-3 % (w/v) NaCl at 25-30 °C and pH 8.0. The 16S rRNA gene sequence of strain MME-070T was most closely related to Roseovarius aestuarii SMK-122T (96.9 %). Phylogenetic analysis based on the 16S rRNA gene sequence indicated that strain MME-070T clustered with the genus Roseovarius. The sole respiratory quinone was Q-10. Polar lipids were phosphatidylglycerol, phosphatidylcholine, diphosphatidylglycerol, unidentified aminolipid and some unidentified lipids. Major cellular fatty acids were summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c), 11-methyl C18 : 1ω7c and C16 : 0. The genomic DNA G+C content of the type strain was 63.6 mol%. Based on polyphasic taxonomic analysis, strain MME-070T is proposed to represent a novel species of the genus Roseovarius, for which the name Roseovarius faecimaris sp. nov. is proposed. The type strain is MME-070T (=KCCM 43142T=JCM 30757T).
Collapse
Affiliation(s)
- In-Tae Cha
- 1Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Eui-Sang Cho
- 2Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon 22012, Republic of Korea
| | - Hak-Jong Choi
- 1Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Seong Woon Roh
- 1Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Myung-Ji Seo
- 2Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon 22012, Republic of Korea.,3Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
| |
Collapse
|
11
|
Park S, Park JM, Lee JS, Yoon JH. Roseovarius ponticola sp. nov., a novel lipolytic bacterium of the family Rhodobacteraceae isolated from seawater. Arch Microbiol 2018; 201:215-222. [PMID: 30483841 DOI: 10.1007/s00203-018-1599-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 04/02/2018] [Accepted: 11/21/2018] [Indexed: 11/29/2022]
Abstract
A lipolytic, Gram-negative, aerobic, non-motile and pleomorphic bacterial strain, designated W-SW3T, was isolated from seawater around Wando, an island of South Korea, and its taxonomic position was determined using a polyphasic approach. Its optimal growth occurred at 30 °C, pH 7.0-8.0 and 2.0-4.0% (w/v) NaCl. Neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain W-SW3T belonged to the genus Roseovarius of the family Rhodobacteraceae, by showing the highest 16S rRNA gene sequence similarity value (97.3%) to the type strain of Roseovarius nanhaiticus. Strain W-SW3T exhibited 16S rRNA gene sequence similarities of 93.2-95.6% to the type strains of the other Roseovarius species. Ubiquinone-10 was found as the predominant ubiquinone and C18:1ω7c and C16:0 were found as the major fatty acids. Phosphatidylcholine, phosphatidylglycerol, diphosphatidylglycerol, one unidentified lipid and one unidentified aminolipid were major polar lipids detected. The DNA G + C content of strain W-SW3T was 63.9 mol%. Mean DNA-DNA relatedness values of strain W-SW3T with the type strains of R. nanhaiticus and R. antarcticus were 18 and 9%, respectively. The phenotypic properties, together with the phylogenetic and genetic data, made it possible strain W-SW3T to be separated from other recognized species of the genus Roseovarius. On the basis of the data presented, strain W-SW3T represents a novel species of the genus Roseovarius, for which the name Roseovarius ponticola sp. nov. is proposed. The type strain is W-SW3T (= KCTC 62424T = KACC 19615T = NBRC 113186T).
Collapse
Affiliation(s)
- Sooyeon Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, South Korea
| | - Ji-Min Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, South Korea
| | - Jung-Sook Lee
- Korean Collection for Type Cultires (KCTC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), 181 Ipsin-gil, Jeongeup, South Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, South Korea.
| |
Collapse
|
12
|
Cho S, Kim J, Kim S, Lee SS. Nitrogen and phosphorus treatment of marine wastewater by a laboratory-scale sequencing batch reactor with eco-friendly marine high-efficiency sediment. ENVIRONMENTAL TECHNOLOGY 2018; 39:1721-1732. [PMID: 28590161 DOI: 10.1080/09593330.2017.1337234] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 05/26/2017] [Indexed: 06/07/2023]
Abstract
UNLABELLED We screened and identified a NH3-N-removing bacterial strain, Bacillus sp. KGN1, and a [Formula: see text] removing strain, Vibrio sp. KGP1, from 960 indigenous marine isolates from seawater and marine sediment from Tongyeong, South Korea. We developed eco-friendly high-efficiency marine sludge (eco-HEMS), and inoculated these marine bacterial strains into the marine sediment. A laboratory-scale sequencing batch reactor (SBR) system using the eco-HEMS for marine wastewater from land-based fish farms improved the treatment performance as indicated by 88.2% removal efficiency (RE) of total nitrogen (initial: 5.6 mg/L) and 90.6% RE of total phosphorus (initial: 1.2 mg/L) under the optimal operation conditions (food and microorganism (F/M) ratio, 0.35 g SCODCr/g mixed liquor volatile suspended solids (MLVSS)·d; dissolved oxygen (DO) 1.0 ± 0.2 mg/L; hydraulic retention time (HRT), 6.6 h; solids retention time (SRT), 12 d). The following kinetic parameters were obtained: cell yield (Y), 0.29 g MLVSS/g SCODCr; specific growth rate (µ), 0.06 d-1; specific nitrification rate (SNR), 0.49 mg NH3-N/g MLVSS·h; specific denitrification rate (SDNR), 0.005 mg [Formula: see text]/g MLVSS·h; specific phosphorus uptake rate (SPUR), 0.12 mg [Formula: see text]/g MLVSS·h. The nitrogen- and phosphorus-removing bacterial strains comprised 18.4% of distribution rate in the microbial community of eco-HEMS under the optimal operation conditions. Therefore, eco-HEMS effectively removed nitrogen and phosphorus from highly saline marine wastewater from land-based fish farms with improving SNR, SDNR, and SPUR values in more diverse microbial communities. ABBREVIATIONS DO: dissolved oxygen; Eco-HEMS: eco-friendly high efficiency marine sludge; F/M: food and microorganism ratio; HRT: hydraulic retention time; ML(V)SS: mixed liquor (volatile) suspended solids; NCBI: National Center for Biotechnology Information; ND: not determined; qPCR: quantitative real-time polymerase chain reaction; RE: removal efficiency; SBR: sequencing batch reactor; SD: standard deviation; SDNR: specific denitrification rate; SNR: specific nitrification rate; SPUR: specific phosphate uptake rate; SRT: solids retention time; T-N: total nitrogen; T-P: total phosphorus; (V)SS: (volatile) suspended solids; w.w.: wet weight.
Collapse
Affiliation(s)
- Seonghyeon Cho
- a Department of Biological Engineering , Kyonggi University , Suwon-si , Republic of Korea
| | - Jinsoo Kim
- b Department of Life Science , Kyonggi University , Suwon-si , Republic of Korea
| | - Sungchul Kim
- c Department of Environmental Energy Engineering , Kyonggi University , Suwon-si , Republic of Korea
| | - Sang-Seob Lee
- a Department of Biological Engineering , Kyonggi University , Suwon-si , Republic of Korea
- b Department of Life Science , Kyonggi University , Suwon-si , Republic of Korea
| |
Collapse
|
13
|
Shen X, Zhao Z, Wu C, Yu XY, Li Y, Sun C, Wu M. Roseovarius nitratireducens sp. nov., a halotolerant bacterium isolated from a saline lake. Int J Syst Evol Microbiol 2018; 68:1204-1209. [DOI: 10.1099/ijsem.0.002651] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Xia Shen
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Zhe Zhao
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Chen Wu
- Zhejiang University of water resources and electric power, Hangzhou 310058, PR China
| | - Xiao-Yun Yu
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Yu Li
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Cong Sun
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Min Wu
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| |
Collapse
|
14
|
Jia X, Kim HR, Jia B, Jeon HH, Baek K, Choi SH, Jeon CO. Roseovarius confluentis sp. nov., isolated from estuary sediment. Int J Syst Evol Microbiol 2017; 67:346-351. [DOI: 10.1099/ijsem.0.001630] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Xiaomeng Jia
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hye Rim Kim
- National Research Laboratory of Molecular Microbiology and Toxicology, Department of Agricultural Biotechnology, and Center for Food Safety and Toxicology, Seoul National University, Seoul 08826, Republic of Korea
| | - Baolei Jia
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hye Hee Jeon
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Kyunghwa Baek
- National Marine Biodiversity Institute of Korea, Seocheon, Chungchungnam-do 33662, Republic of Korea
| | - Sang Ho Choi
- National Research Laboratory of Molecular Microbiology and Toxicology, Department of Agricultural Biotechnology, and Center for Food Safety and Toxicology, Seoul National University, Seoul 08826, Republic of Korea
| | - Che Ok Jeon
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| |
Collapse
|
15
|
Park S, Ha MJ, Yoon SY, Jung YT, Yoon JH. Roseovarius aestuariivivens sp. nov., isolated from a tidal flat. Int J Syst Evol Microbiol 2017; 67:25-30. [DOI: 10.1099/ijsem.0.001562] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Sooyeon Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Min-Ji Ha
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Sun Young Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Yong-Taek Jung
- University of Science and Technology (UST), 113 Gwahak-ro, Yuseong-gu, Daejeon, Republic of Korea
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| |
Collapse
|
16
|
Pan J, Yu Z, Tang J, Yang G, Zhuang L, Liu Z, Zhou S. Roseovarius lacus sp. nov., isolated from Yuncheng Saline Lake, China. Arch Microbiol 2016; 199:231-236. [PMID: 27665455 DOI: 10.1007/s00203-016-1296-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 08/22/2016] [Accepted: 09/20/2016] [Indexed: 11/25/2022]
Abstract
Strain GSS12T, a Gram-negative, aerobic, non-flagellated, ovoid- to rod-shaped (0.5-0.7 × 0.9-3.0 µm) bacterium, was isolated from Yuncheng Saline Lake, China. Growth occurred with 0.5-16.0 % (w/v) NaCl (optimum 4.5 %), at pH 5.0-10.0 (optimum pH 6.0-6.5) and at 10-50 °C (optimum 37 °C). The major fatty acids (>5.0 %) found in GSS12T were summed feature 8 (72.2 %), C16:0 (9.0 %) and C18:1 ω7c 11-methyl (6.4 %). The DNA G+C content was 62.7 mol%. Analysis of the 16S rRNA gene sequences showed that strain GSS12T forms a stable clade with species of the genus Roseovarius, being related to R. pacificus 81-2T and R. litoreus GSW-M15T with 97.9 and 96.7 % of sequence similarity, respectively. The DNA-DNA relatedness values between strain GSS12T and R. pacificus 81-2T and R. halotolerans HJ50T were low (36 and 29 %, respectively). The phenotypic, physiological, biochemical and genetic characteristics support the assignment of strain GSS12T to the genus Roseovarius and represent a novel species. The name Roseovarius lacus sp. nov. is proposed, with strain GSS12T (=KCTC 52185T =MCCC 1K02302T) as the type strain.
Collapse
Affiliation(s)
- Jiafeng Pan
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, People's Republic of China
- Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou, 510650, People's Republic of China
| | - Zhen Yu
- Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou, 510650, People's Republic of China.
| | - Jia Tang
- Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou, 510650, People's Republic of China
| | - Guiqin Yang
- Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou, 510650, People's Republic of China
| | - Li Zhuang
- Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou, 510650, People's Republic of China
| | - Zhi Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, People's Republic of China
| | - Shungui Zhou
- College of Resources and Environmental Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| |
Collapse
|
17
|
Jeong SH, Lee SS. Nitropelagius marinus gen. nov., sp. nov., Isolated From Seawater, Je-bu island, South Korea [corrected]. Curr Microbiol 2016; 73:354-360. [PMID: 27246498 DOI: 10.1007/s00284-016-1069-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 04/25/2016] [Indexed: 11/27/2022]
Abstract
A Gram-stain-negative, non-spore forming, non-motile and aerobic strain, designated JB22(T), was isolated from seawater, Je-bu Island, South Korea. Strain JB22(T) was catalase and oxidase positive. Optimal growth of JB22(T) was observed at 30 °C and pH 7.0. NaCl tolerance range was 1-9 % (w/v) with an optimum of 2.0 % concentration. The phylogenetic analysis based on 16S rRNA gene sequence of strain JB22(T) showed the highest sequence similarity to those of Pelagicola litorisediminis D1-W8(T) (95.8 %), Roseovarius litoreus GSW-M15(T) (95.2 %), Roseovarius aestuarii SMK-122(T) (95.0 %), Donghicola eburmeus SW-277(T) (95.0 %), and Roseovarius halotolerans HJ50(T) (94.9 %). It contained ubiquine-10 as the major respiratory quinone and C18:1 ω7c (69.3 %), :0 (9.9 %), C18:1 ω7c 11-methyl (9.6 %) as the major fatty acid. The polar lipid profile included phosphatidylcholine, phosphatidylglycerol, and unidentified aminolipid. The DNA G+C content of the strain JB22(T) was 47 mol %. Based on physiological and chemotaxonomic characteristics, strain JB22(T) should be regarded as a new genus of the family Rhodobacteraceae, for which the Nitropelagi marinus gen. nov., sp. nov. is proposed. The type strain is JB22(T) (= KEMB 3001-101(T) = JCM 30822(T)).
Collapse
Affiliation(s)
- Sun Hwan Jeong
- Department of Life Science, Graduate School of Kyonggi University, 94-6 Iui-dong Yeongtong-gu, Suwon, 433-760, Republic of Korea
| | - Sang Seob Lee
- Department of Life Science, Graduate School of Kyonggi University, 94-6 Iui-dong Yeongtong-gu, Suwon, 433-760, Republic of Korea.
| |
Collapse
|
18
|
Moon SB, Lee SS. Roseovarius algicolus sp. nov., isolated from culture fluid of Cochlidinium polykrikoides. Antonie van Leeuwenhoek 2015; 108:1449-1456. [PMID: 26446977 DOI: 10.1007/s10482-015-0600-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 09/26/2015] [Indexed: 10/23/2022]
Abstract
A Gram-negative, aerobic, non-motile, catalase and oxidase positive rod-shaped bacterium, designated strain 4CoA2(T), was isolated from Cochlidinium polykrikoides culture fluid in the laboratory. The strain formed circular, glistening, grayish yellow colonies and grew at pH 7-8 and 28 °C optimally. On the basis of 16S rRNA gene sequence similarity, the strain was shown to be phylogenetically related to Roseovarius indicus B108(T) (97.6 %), Roseovarius halotolerans HJ50(T) (97.3 %), Roseovarius pacificus 2-81(T) (96.6 %), Roseovarius litoreus GSW-M15(T) (96.3 %) and Roseovarius tolerans EL-172(T) (94.27 %). Chemotaxonomic data revealed that the strain 4CoA2(T) possesses ubiquinone Q-10, and the predominant fatty acid is C18:1 ω6c or C18:1 ω7c. The polar lipids profile of the strain 4CoA2(T) included major amounts of phosphatidylglycerol, phosphatidylcholine, and diphosphatidyl glycerol. The DNA G + C content of the strain 4CoA2(T) is 62.0 %. Strain 4CoA2(T) exhibited relatively low level of DNA hybridization values (<35 %) with other Roseovarius species. On the basis of its phenotypic, genotypic properties and its phylogenetic data, strain 4CoA2(T) can be concluded to represent a novel species in the genus Roseovarius, for which the name Roseovarius algicolus sp. nov. is proposed. The type strain is 4CoA2(T) (=JCM 30823(T), =KEMB 3501-06(T)).
Collapse
Affiliation(s)
- Saet-Byeol Moon
- Department of Bio Technology, Division of Environmental & Life Science, College of Natural Science, Kyonggi University, 94-6 Iui-dong Yeongtong-gu, Suwon-si, 443-760, Republic of Korea
| | - Sang-Seob Lee
- Department of Life Science, School of Natural Science, Kyonggi University, San 94-6, Iui-dong, Yeongtong-gu, Suwon-si, 443-760, Republic of Korea.
| |
Collapse
|