1
|
Wang YM, Liu R, Wang X, Sun K, Hong W, Wang Y, Liu J. Albibacterium profundi sp. nov., isolated from sediment of the Challenger Deep of Mariana Trench, and reclassification of Pedobacter indicus as Albibacterium indicum comb. nov. Int J Syst Evol Microbiol 2025; 75. [PMID: 40232812 DOI: 10.1099/ijsem.0.006754] [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: 04/16/2025] Open
Abstract
A rod-shaped, white-pigmented, non-motile, Gram-stain-negative bacterium, designated RHL897T, was isolated from sediments collected at the Mariana Trench Challenger Deep (10,816 m). Strain RHL897T was strictly aerobic and grew at 4-37 °C, pH 6.0-10.0 and in the presence of 0-11.0 % (w/v) NaCl. Its genomic DNA G+C content was 41.2%. Metabolic analysis revealed mechanisms for salt tolerance, abundant metal ion transport proteins and stronger resistance to heavy metals such as arsenic and mercury compared to the closest reference strains, likely linked to adaptation to the hadal sediment environment. The predominant menaquinone was MK-7, and the major polar lipids were phosphatidylethanolamine, an unidentified aminophospholipid and an unidentified glycolipid. The main fatty acids were iso-C15 : 0, summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c) and iso-C17 : 0 3OH. Strain RHL897T exhibited the highest 16S rRNA gene sequence similarity to the type strain of Pedobacter indicus (97.9%) and Albibacterium bauzanense (96.1%). Phylogenetic trees constructed based on 16S rRNA gene sequences and a 549 core gene set indicated that strain RHL897T was closely related to P. indicus and A. bauzanense, with all three species clustering within a distinct clade. Combined with the analyses of average nucleotide identity, average amino acid identity and digital DNA-DNA hybridization, strain RHL897T represented a novel species of the genus Albibacterium, for which the name Albibacterium profundi sp. nov. is proposed. The type strain is RHL897T (=MCCC 1K09221T=KCTC 102276T). Furthermore, the revised phylogeny with the inclusion of RHL897T suggested that P. indicus should be reclassified under the genus Albibacterium and renamed Albibacterium indicum.
Collapse
Affiliation(s)
- Yi-Ming Wang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, PR China
- Key Laboratory of Evolution & Marine Biodiversity (Ministry of Education) and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, PR China
| | - Ronghua Liu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, PR China
- Key Laboratory of Evolution & Marine Biodiversity (Ministry of Education) and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, PR China
| | - Xiaolei Wang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, PR China
- Key Laboratory of Evolution & Marine Biodiversity (Ministry of Education) and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, PR China
| | - Kaixuan Sun
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, PR China
- Key Laboratory of Evolution & Marine Biodiversity (Ministry of Education) and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, PR China
| | - Wen Hong
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, PR China
- Key Laboratory of Evolution & Marine Biodiversity (Ministry of Education) and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, PR China
| | - Yaru Wang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, PR China
- Key Laboratory of Evolution & Marine Biodiversity (Ministry of Education) and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, PR China
| | - Jiwen Liu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266237, PR China
- Key Laboratory of Evolution & Marine Biodiversity (Ministry of Education) and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, PR China
| |
Collapse
|
2
|
Wang ML, Fu GY, Xu XW. Flagellimonas baculiformis sp. nov. and Flagellimonas crocea sp. nov., isolated from surface seawater of the Pacific Ocean. Int J Syst Evol Microbiol 2024; 74. [PMID: 38568198 DOI: 10.1099/ijsem.0.006316] [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: 04/05/2024] Open
Abstract
Two Gram-negative, non-spore-forming, non-motile, non-flagellated bacteria, designated strains D6T and DH64T, were isolated from surface water of the Pacific Ocean. For strain D6T, growth occurred at 10-40 °C, pH 5.5-9.0 and in the presence of 0-8.0 % NaCl (w/v). For strain DH64T, growth occurred at 10-40 °C, pH 5.5-8.5 and in the presence of 0.5-8.0 % NaCl (w/v). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strains D6T and DH64T both belonged to the genera Flagellimonas, with the highest sequence identities to Flagellimonas taeanensis JCM 17757T (98.2 %) and Flagellimonas marinaquae JCM 11811T (98.6 %), respectively. The 16S rRNA gene sequence identity between strains D6T and DH64T was 95.9 %. The average amino acid identity and digital DNA-DNA hybridization values between the two strains and the nearest phylogenetic neighbours were 66.7-93.3 % and 16.1-38.5 %, respectively. The major respiratory quinone of both strains was menaquinone-6. The major polar lipid was phosphatidylethanolamine. The major fatty acids were identified similarly as iso-C15 : 1 G, iso-C15 : 0 and iso-C17 : 0 3-OH. The genomic G+C contents of strains D6T and DH64T were determined to be 45.5 and 42.6 mol%, respectively. The combined genotypic and phenotypic data show that the strains represent two novel species within genera Flagellimonas, for which the names Flagellimonas baculiformis sp. nov. and Flagellimonas crocea sp. nov. are proposed, with type strains D6T (=MCCC M28982T=KCTC 92604T) and DH64T (=MCCC M28986T=KCTC 92975T).
Collapse
Affiliation(s)
- Ming-Lei Wang
- Ocean College, Zhejiang University, Zhoushan 316000, PR China
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 316021, PR China
| | - Ge-Yi Fu
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 316021, PR China
| | - Xue-Wei Xu
- Ocean College, Zhejiang University, Zhoushan 316000, PR China
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 316021, PR China
| |
Collapse
|
3
|
Novoa EAM, Deshmukh UB, Oren A. Reclassification of Allomuricauda and Muricauda species as members of the genus Flagellimonas Bae et al. 2007 and emended description of the genus Flagellimonas. Int J Syst Evol Microbiol 2024; 74. [PMID: 38421264 DOI: 10.1099/ijsem.0.006286] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024] Open
Abstract
The recently proposed genus Allomuricauda Deshmukh and Oren 2023 is illegitimate because it includes the type species of the genera Flagellimonas Bae et al. 2007 and Spongiibacterium Yoon and Oh 2012, contravening Rule 51b(1) of the International Code of Nomenclature of Prokaryotes. As Flagellimonas Bae et al. 2007 is the earlier described genus, we here reclassify 36 species earlier described as belonging to the illegitimate genus Muricauda as species of Flagellimonas. We also present an emended description of the genus Flagellimonas.
Collapse
Affiliation(s)
- Eduardo A Molinari Novoa
- Chess Consulting & Project, Lima 15039, and 'La Molina' National Agrarian University, Lima 15024, Peru
| | - Umakant Bhoopati Deshmukh
- Institution of Higher Learning, Research and Specialized Studies Centre, Department of Botany, Janata Mahavidyalaya, Chandrapur 442 401, Maharashtra, India
| | - Aharon Oren
- Department of Plant and Environmental Sciences, The Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 9190401, Israel
| |
Collapse
|
4
|
Deshmukh UB, Oren A. Proposal of Allomuricauda gen. nov. and Allofranklinella gen. nov. as replacement names for the illegitimate prokaryotic generic names Muricauda and Franklinella, respectively. Int J Syst Evol Microbiol 2023; 73. [PMID: 37747448 DOI: 10.1099/ijsem.0.006023] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023] Open
Abstract
The prokaryotic generic names Muricauda Bruns et al. 2001 and Franklinella Bernard et al. 2022 are illegitimate because they are later homonyms of the genus names Muricauda Small 1903 (synonym of Arisaema; Tracheophyta - Liliopsida - Araceae) and Franklinella Stewart and Hendrix 1945 (a Devonian ostracod genus) and Franklinella Lenz 1973 (a Devonian brachiopod genus), respectively (Principle 2 and Rule 51b(4) of the International Code of Nomenclature of Prokaryotes). We therefore propose the replacement generic names Allomuricauda and Allofranklinella, with type species Allomuricauda ruestringensis and Allofrankinella schreckenbergeri, respectively.
Collapse
Affiliation(s)
- Umakant Bhoopati Deshmukh
- Department of Botany, Institution of Higher Learning, Research and Specialized Studies Centre, Janata Mahavidyalaya, Chandrapur 442 401, Maharashtra, India
| | - Aharon Oren
- Department of Plant and Environmental Sciences, The Institute of Life Sciences, The Hebrew University of Jerusalem, Edmund J. Safra Campus, Jerusalem 9190401, Israel
| |
Collapse
|
5
|
Wang D, Wu Y, Liu Y, Liu B, Gao Y, Yang Y, Zhang Y, Liu C, Huo Y, Tang A, Xu Y, Wei Y. Muricauda abyssi sp. nov., a marine bacterium isolated from deep seawater of the Mariana Trench. Int J Syst Evol Microbiol 2022; 72. [PMID: 36748599 DOI: 10.1099/ijsem.0.005615] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A Gram-stain-negative, non-motile and rod-shaped bacterium, designated as strain W52T, was isolated from deep seawater of the Mariana Trench and characterized phylogenetically and phenotypically. The strain could grow at 10-47 °C (optimum 32 °C), at pH 5.0-8.0 (optimum 6.0) and with 0-9% NaCl (optimum 3 %, w/v). The results of phylogenetic analysis based on 16S rRNA gene sequences indicated that W52T was related to members of the genus Muricauda and shared the highest identity with Muricauda oceani 501str8T (99.0 %), followed by Muricauda aquimarina JCM 11811T, Muricauda ruestringensis DSM 13258T, Muricauda oceanensis 40DY170T, Muricauda beolgyonensis KCTC 23501T and Muricauda zhangzhouensis 12C25T with 97.0-98.8 % sequence similarity. 16S rRNA gene sequence identities between W52T and other members of the genus Muricauda were below 97.0 %. The major respiratory quinone was MK-6. The polar lipids were phosphatidylethanolamine (PE), one unidentified aminolipid and three unidentified lipids. The strain had iso-C15 : 0, iso-C17 : 0 3-OH and iso-C15 : 1G as the major fatty acids. The G+C content of the genomic DNA was 41.7 %. The combined genotypic and phenotypic data indicated that strain W52T represents a novel species of the genus Muricauda, for which the name Muricauda abyssi sp. nov. is proposed, with the type strain W52T (=MCCC 1K05111T= KCTC 82315T).
Collapse
Affiliation(s)
- Di Wang
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Yong Wu
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Yang Liu
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Bilin Liu
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Yuxin Gao
- State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, PR China
| | - Yuxue Yang
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Yan Zhang
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Chen Liu
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Yingzhe Huo
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Aoyu Tang
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Yunping Xu
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| | - Yuli Wei
- College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China
| |
Collapse
|
6
|
Chen MX, He XY, Li HY. Muricauda chongwuensis sp. nov., isolated from coastal seawater of China. Arch Microbiol 2021; 203:6245-6252. [PMID: 34609527 DOI: 10.1007/s00203-021-02591-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/02/2021] [Accepted: 09/21/2021] [Indexed: 11/26/2022]
Abstract
In the course of screening for bacterial predators, a Gram-stain-negative, non-flagellated, gliding, long rod-shaped, and yellow-pigmented bacterium, designated strain HICWT, was isolated from coastal seawater of China. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain HICWT represented a member of the genus Muricauda and showed the highest sequence similarity to M. aquimarina JCM11811T (98.8%) and M. ruestringensis DSM13258T (98.1%). The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between strain HICWT and M. aquimarina JCM11811T were 79.2% and 34.1%, respectively. NaCl was required for growth. Optimum growth occurred at 25-30 °C, 2.0-3.0% (w/v) NaCl with pH 7.0. Strain HICWT showed some similar characteristics to the nonobligate bacterial predators, and the cells can attach to the prey cells. Strain HICWT contained MK-6 as the predominant respiratory quinone and had iso-C15:0, iso-C15:1 G, and iso-C17:0 3-OH as the major cellular fatty acids. The polar lipids contained phosphatidylethanolamine (PE), three unidentified phospholipids (PL1-PL3), one unidentified amino lipids (AL), and three unidentified polar lipids (L1-L3). The genome size of strain HICWT was approximately 3.8 Mbp, with a G + C content of 41.4%. Based on the polyphasic evidence, strain HICWT is proposed as representing a new species of the genus Muricauda, for which the name Muricauda chongwuensis sp. nov. is proposed. The type strain is HICWT (= JCM 33643 T = MCCC 1K03769T).
Collapse
Affiliation(s)
- Ming-Xia Chen
- College of Chemical Engineering, Huaqiao University, 668 Jimei Road, Xiamen, 361021, Fujian, People's Republic of China.
| | - Xiao-Yu He
- College of Chemical Engineering, Huaqiao University, 668 Jimei Road, Xiamen, 361021, Fujian, People's Republic of China
| | - He-Yang Li
- Third Institute of Oceanography, Ministry of Natural Resources, 178 Daxue Road, Xiamen, 361005, Fujian, People's Republic of China.
- Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen, 361005, Fujian, People's Republic of China.
| |
Collapse
|
7
|
Liang J, Yin Q, Zheng X, Wang Y, Song ZM, Zhang Y, Hao L, Xu Y. Muricauda onchidii sp. nov., isolated from a marine invertebrate from South China Sea, and transfers of Flagellimonas algicola, Flagellimonas pacifica and Flagellimonas maritima to Muricauda algicola comb. nov., Muricauda parva nom. nov. and Muricauda aurantiaca nom. nov., respectively, and emended description of the genus Muricauda. Int J Syst Evol Microbiol 2021; 71. [PMID: 34516364 DOI: 10.1099/ijsem.0.004982] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
An aerobic, Gram-stain-negative, rod-shaped and non-motile strain (XY-359T) was isolated from the mouth of a marine invertebrate Onchidium species from the South China Sea. It grew at pH 6.0-8.5 (optimum, pH 7.5), at 15-37 °C (optimum, 30 °C) and in the presence of 0.5-4.5 % (w/v) NaCl (optimum, 2.5 %). It could not hydrolyse Tweens 20, 40, 60 or 80 and no flexirubin-type pigments were produced. The major polar lipids were phosphatidylethanolamine, one unidentified aminolipid, six unidentified phospholipids and two unidentified polar lipids. The major fatty acids were iso-C17:0 3-OH, iso-C15:1 G and iso-C15:0 3-OH. The respiratory quinone was MK-6. Strain XY-359T showed the greatest degree of 16S rRNA sequence similarity to Flagellimonas algicola AsT0115T (96.54 %), followed by Muricauda flava DSM 22638T (96.27 %). Phylogenetic analysis based on 16S rRNA gene sequences and 31 core genes indicated that strain XY-359T belongs to the genus Muricauda. The genome size of strain XY-359T was 4 207 872 bp, with 39.1 mol% of DNA G+C content. The average nucleotide identity and digital DNA-DNA hybridization values between strain XY-359T and F. algicola AsT0115T were 74.58 % and 18.5 %, respectively, and those between strain XY-359T and M. flava DSM 22638T were 74.2 % and 18.3 %. The combined phenotypic, chemotaxonomic and phylogenetic data suggest that strain XY-359T represents a novel species of the genus Muricauda, for which the name Muricauda onchidii sp. nov. is proposed. The type strain is XY-359T (=MCCC 1K03658T =KCTC 72218T). Moreover, based on the proposal of nesting Spongiibacterium and Flagellimonas within Muricauda by García (Validation List No. 193) and the analyses of phylogenetic trees and average amino acid identities in this study, the transfers of F. algicola, F. pacifica and F. maritima to the genus Muricauda as Muricauda algicola comb. nov., Muricauda parva nom. nov. and M. aurantiaca nom. nov., respectively, are proposed, with an emended description of the genus Muricauda.
Collapse
Affiliation(s)
- Jinyou Liang
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Qi Yin
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China.,School of Public Health and Management, Chongqing Medical University, Chongqing 400016, PR China
| | - Xiaoli Zheng
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Yu Wang
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Zhi-Man Song
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Yu Zhang
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Lingyun Hao
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Ying Xu
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| |
Collapse
|
8
|
Chen Y, Hu Z, Wang H. Muricauda amphidinii sp. nov., a novel marine bacterium isolated from the phycosphere of dinoflagellate Amphidinium carterae. Int J Syst Evol Microbiol 2021; 71. [PMID: 33734957 DOI: 10.1099/ijsem.0.004764] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, aerobic, rod-shaped and non-motile bacterium was isolated from a liquid culture of dinoflagellate Amphidinium carterae and further designated as LMIT004T. Optimal growth was observed at 25 °C, pH 7.0 and in the presence of 2 % (w/v) NaCl. Oxidase and catalase were positive. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain LMIT004T showed high similarities to type strains Muricauda nanhaiensis SM17004T (96.77 %) and Muricauda aquimarina JCM11811T (95.60 %) but formed a separate branch in the genus Muricauda. The G+C content of strain LMIT004T was 39.0 mol%. The dominant fatty acids were iso-C15 : 0 and iso-C15 : 1 G. The polar lipids mainly contained phosphatidylethanolamine, five unidentified phospholipids and five unidentified polar lipids. The sole respiratory quinone was menaquinone-6 (MK-6). The draft genome of the type strain was 3.88 Mbp. The average nucleotide identity values between strain LMIT004T and the two reference strains M. nanhaiensis SM17004T and M. aquimarina JCM11811T were 77.47 and 73.49 %, respectively. Based on the polyphasic analysis, strain LMIT004T is suggested to represent a novel specie in the genus of Muricauda, for which the name Muricauda amphidinii sp. nov. is proposed. The type strain is LMIT004T (=CICC 24871T=KCTC 72948T).
Collapse
Affiliation(s)
- Yuerong Chen
- Biology Department and Institute of Marine Sciences, College of Science, Shantou University, Shantou, PR China
| | - Zhong Hu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, PR China.,Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, PR China.,Biology Department and Institute of Marine Sciences, College of Science, Shantou University, Shantou, PR China
| | - Hui Wang
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, PR China.,Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, PR China.,Biology Department and Institute of Marine Sciences, College of Science, Shantou University, Shantou, PR China
| |
Collapse
|
9
|
Guo LL, Wu D, Sun C, Cheng H, Xu XW, Wu M, Wu YH. Muricauda maritima sp. nov., Muricauda aequoris sp. nov. and Muricauda oceanensis sp. nov., three marine bacteria isolated from seawater. Int J Syst Evol Microbiol 2020; 70:6240-6250. [DOI: 10.1099/ijsem.0.004522] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Three Gram-stain-negative, non-motile, rod-shaped strains, designated 72T, NH166T and 40DY170T, were isolated from seawater samples of the West Pacific Ocean, South China Sea and West Pacific Ocean, respectively. The 16S rRNA gene sequence similarity results revealed that strains 72Tand NH166T were most closely related to
Muricauda antarctica
Ar-22T,
Muricauda taeanensis
JCM 17757T,
Muricauda beolgyonensis
KCTC 23501T,
Muricauda lutimaris
KCTC 22173T and
Muricauda hadalis
MT-229T with 97.2–98.0% sequence similarity. 16S rRNA gene sequence analysis also indicated that strain 40DY170T was most closely related to
Muricauda ruestringensis
DSM 13258T,
Muricauda aquimarina
JCM 11811T,
Muricauda lutimaris
KCTC 22173T and
Muricauda oceani
501str8T with 97.6–98.1% sequence similarity. The 16S rRNA gene sequence similarity values among strains 72T, NH166T and 40DY170T were 96.5–99.2%. Phylogenetic analyses indicated that three new isolates represented three novel species by forming two distinctive lineages within the genus
Muricauda
. The DNA G+C contents of strain 72T, NH166T and 40DY170T were 43.4, 43.4 and 42.4 mol%, respectively. The average nucleotide identity and in silico DNA–DNA hybridization values between strains 72T, NH166T, 40DY170T and the reference strains were 76.5–93.5% and 19.2–53.5%, respectively. The sole respiratory quinone in all strains was menaquinone-6. Their major fatty acids were iso-C17:0 3-OH, iso-C15:0 and iso-C15 : 1 G. The major polar lipids of strains 72T and NH166T were phosphatidylethanolamine, one unidentified aminolipid and two unidentified lipids. The major polar lipids of strain 40DY170T were phosphatidylglycerol, one unidentified phospholipid, one unidentified aminolipid and two unidentified lipids. On the basis of their distinct taxonomic characteristics, the three isolates represent three novel species of the genus
Muricauda
, for which the names Muricauda maritima sp. nov. (type strain 72T=KCTC 62229T=MCCC 1K03350T), Muricauda aequoris sp. nov. (NH166T=KCTC 62228T=MCCC 1K03449T) and Muricauda oceanensis sp. nov. (40DY170T=KCTC 72200T=MCCC 1K03569T) are proposed.
Collapse
Affiliation(s)
- Li-Li Guo
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, PR China
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Dildar Wu
- College of Life and Geographic Sciences, Kashi University, Kashi 844000, PR China
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Cong Sun
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, PR China
| | - Hong Cheng
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, PR China
| | - Xue-Wei Xu
- School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, PR China
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, PR China
| | - Min Wu
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Yue-Hong Wu
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, PR China
- School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, PR China
| |
Collapse
|