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Zhang MD, Zhou ZY, Kou YY, Lu DC, Du ZJ. Brumimicrobium oceani sp. nov., isolated from coastal sediment saline lake and environmental adaptability analysis. Antonie Van Leeuwenhoek 2023; 116:1375-1384. [PMID: 37843738 DOI: 10.1007/s10482-023-01892-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 09/25/2023] [Indexed: 10/17/2023]
Abstract
A novel Gram-stain-negative, aerobic, non-motile, rod-shaped and orange-colored bacterium, designated as strain C305T, was isolated from marine sediment of the coast area of Weihai, China. Strain C305T growth occurs at 4-40 °C (optimally at 30-33 °C), pH 6.0-9.0 (optimally at pH 8.0) and with 0.5-10.0% (w/v) NaCl (optimum 1.5-3.0%). No growth is observed without NaCl. The major cellular fatty acids of strain C305T were identified as iso-C15:0, iso-C15:1G and iso-C17:0 3-OH. The major respiratory quinone was found to be MK-6, and the DNA G + C content was determined to be 35.5 mol%. The predominant polar lipids were mainly phosphatidylethanolamines (PE), unidentified aminophospholipids (APL), andunidentified lipid (L2). Phylogenetic analysis based on 16S rRNA gene sequences revealed that C305T was a member of the genus Brumimicrobium and had a 16S rRNA gene sequence similarity values of 96.9-98.0% with recognized Brumimicrobium species. On the basis of the phylogenetic and phenotypic evidences, strain C305T represents a novel species of the genus Brumimicrobium, for which the name Brumimicrobium oceani sp. nov. is proposed. The type strain is C305T (= KCTC 62371 T = MCCC 1H00297T).
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Affiliation(s)
- Meng-Di Zhang
- Marine College, Shandong University, Weihai, 264209, Shandong, People's Republic of China
- Joint Science College, Shandong University, Weihai, 264209, Shandong, People's Republic of China
| | - Zi-Yang Zhou
- Marine College, Shandong University, Weihai, 264209, Shandong, People's Republic of China
| | - Yi-Yu Kou
- Marine College, Shandong University, Weihai, 264209, Shandong, People's Republic of China
| | - De-Chen Lu
- Marine College, Shandong University, Weihai, 264209, Shandong, People's Republic of China
| | - Zong-Jun Du
- Marine College, Shandong University, Weihai, 264209, Shandong, People's Republic of China.
- Weihai Research Institute of Industrial Technology of Shandong University, Weihai, 264209, People's Republic of China.
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Huang Z, Huang Y, Lai Q, Oren A, Wang W. Paracrocinitomix mangrovi gen. nov., sp. nov., isolated from a mangrove sediment: proposal of two new families, Phaeocystidibacteraceae fam. nov. and Owenweeksiaceae fam. nov., and emended description of the family Schleiferiaceae. Antonie Van Leeuwenhoek 2023; 116:171-184. [PMID: 36346556 DOI: 10.1007/s10482-022-01790-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022]
Abstract
A Gram-stain-negative and short rod-shaped bacterial strain designated GM2-3-6-6T was obtained from a mangrove sediment. Cells were light yellow-pigmented, catalase-positive and oxidase-positive. Carotenoid pigment was produced. Phylogeny of the 16S rRNA gene showed that strain GM2-3-6-6T was affiliated to the family Crocinitomicaceae, sharing maximum sequence similarities with Crocinitomix algicola 0182T, C. catalasitica IFO 15977T, and Putridiphycobacter roseus SM1701T of 93.8%, 93.6%, and 92.5%, respectively. The average nucleotide identity values, digital DNA-DNA hybridization estimates and average amino acid identity values between strain GM2-3-6-6T and the three close relatives were 68.6-68.8%, 18.5-19.2%, and 59.0-62.3%, respectively. The complete circular genome of strain GM2-3-6-6T was 4,365,762 bp in length with a DNA G + C content of 35.0%. The respiratory quinone was MK-7. The major polar lipids consisted of phosphatidylethanolamine, two unidentified phospholipids, one unidentified aminoglycolipid, one unidentified aminolipid and four other unidentified lipids. The major fatty acids were iso-C15:0, iso-C15:1 G, summed feature 3 (C16:1ω7c and/or C16:1ω6c), and iso-C17:0 3-OH. Based on genomic, phenotypic, and chemotaxonomic characterizations, strain GM2-3-6-6T represents a novel species of a novel genus, for which the name Paracrocinitomix mangrovi gen. nov., sp. nov. is proposed. The type strain is GM2-3-6-6T (= MCCC 1K04831T = KCTC 82931T). Additionally, phylogenomic analysis of the type strains of the family Schleiferiaceae and family Cryomorphaceae related members including uncultivated bacteria, was performed using the Genome Taxonomic Database toolkit (GTDB-Tk). Based on 16S rRNA gene phylogeny and genomic features, two novel families, Phaeocystidibacteraceae fam. nov. and Owenweeksiaceae fam. nov. are proposed. An emended description of the family Schleiferiaceae is also proposed.
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Affiliation(s)
- Zhaobin Huang
- College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, People's Republic of China. .,Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou, China.
| | - Yuanyuan Huang
- College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou, People's Republic of China
| | - Qiliang Lai
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
| | - Aharon Oren
- The Institute of Life Sciences, The Edmond J. Safra Campus, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Wanpeng Wang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
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Lucena T, Sánchez O, Sanz-Saez I, Acinas SG, Garrido L, Mas J, Macián MC, Ruvira MA, Arahal DR, Pujalte MJ. Parvicella tangerina gen. nov., sp. nov. (Parvicellaceae fam. nov., Flavobacteriales), first cultured representative of the marine clade UBA10066, and Lysobacter luteus sp. nov., from activated sludge of a seawater-processing wastewater treatment plant. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two strains isolated from a sample of activated sludge that was obtained from a seawater-based wastewater treatment plant on the southeastern Mediterranean coast of Spain have been characterized to achieve their taxonomic classification, since preliminary data suggested they could represent novel taxa. Given the uniqueness of this habitat, as this sort of plants are rare in the world and this one used seawater to process an influent containing intermediate products from amoxicillin synthesis, we also explored their ecology and the annotations of their genomic sequences. Analysis of their 16S rRNA gene sequences revealed that one of them, which was orange-pigmented, was distantly related to
Vicingus serpentipes
(family
Vicingaceae
) and to other representatives of neighbouring families in the order
Flavobacteriales
(class
Flavobacteriia
) by 88–89 % similarities; while the other strain, which was yellow-pigmented, was a putative new species of
Lysobacter
(family
Xanthomonadaceae
, order
Xanthomonadales
, class
Gammaproteobacteria
) with
Lysobacter arseniciresistens
as closest relative (97.3 % 16S rRNA sequence similarity to its type strain). Following a polyphasic taxonomic approach, including a genome-based phylogenetic analysis and a thorough phenotypic characterization, we propose the following novel taxa: Parvicella tangerina gen. nov., sp. nov. (whose type strain is AS29M-1T=CECT 30217T=LMG 32344T), Parvicellaceae fam. nov. (whose type genus is Parvicella), and Lysobacter luteus sp. nov. (whose type strain is AS29MT=CECT 30171T=LMG 32343T).
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Affiliation(s)
- Teresa Lucena
- Colección Española de Cultivos Tipo (CECT), Universitat de València, Valencia, Spain
| | - Olga Sánchez
- Departament de Genètica i Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Isabel Sanz-Saez
- Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, ICM-CSIC, Barcelona, Spain
| | - Silvia G. Acinas
- Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, ICM-CSIC, Barcelona, Spain
| | - Laura Garrido
- Departament de Genètica i Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Jordi Mas
- Departament de Genètica i Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - M. Carmen Macián
- Colección Española de Cultivos Tipo (CECT), Universitat de València, Valencia, Spain
| | - María A. Ruvira
- Colección Española de Cultivos Tipo (CECT), Universitat de València, Valencia, Spain
| | - David R. Arahal
- Departamento de Microbiología y Ecología, Universitat de València, Valencia, Spain
| | - María J. Pujalte
- Departamento de Microbiología y Ecología, Universitat de València, Valencia, Spain
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Flavobacterium litorale sp. nov., isolated from red alga. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative and rod-shaped bacterial strain (WSW3-B6T) was isolated from red alga collected from the West Sea, Republic of Korea. Cells of strain WSW3-B6T were non-motile, aerobic and produced slightly yellow and mucoid colonies on marine agar. The strain grew optimally at 23–30 °C, with 0.5–4 % NaCl (w/v) and at pH 6.5–8.5. A phylogenetic analysis of the 16S rRNA gene revealed that strain WSW3-B6T belongs to the genus
Flavobacterium
within the family
Flavobacteriaceae
, having the highest sequence similarity to
Flavobacterium arcticum
SM1502T (96.7%), followed by
Flavobacterium salilacus
subsp.
altitudinum
LaA7.5T (96.2%) and
Flavobacterium salilacus
subsp.
salilacus
SaA2.12T (96.2%). The complete sequence of a circular chromosome of strain WSW3-B6T determined by combination of Oxford Nanopore and Illumina platforms comprised a total 2 725 095 bp with G+C content of 37.1 mol%. A comparative analysis based on the whole genome also showed the distinctiveness of strain WSW3-B6T. The average nucleotide identity (ANI) values between strain WSW3-B6T and the closest strains
F. arcticum
SM1502T,
F. salilacus
subsp.
altitudinum
LaA7.5T and
F. salilacus
subsp.
salilacus
SaA2.12T were 78.3, 77.8 and 77.7 %, respectively, while the digital DNA–DNA hybridization (dDDH) values between strain WSW3-B6T and the above closely related strains were 21.0, 20.4 and 20.3 %, respectively. Both the ANI and dDDH values supported the creation of a new species in the genus
Flavobacterium
. The major fatty acids (>10 %) were iso-C15 : 0 (19.3 %), C16 : 0 (14.0 %), iso-C17 : 0 3-OH (13.1 %) and C18 : 0 (10.7 %). The polar lipids of strain WSW3-B6T included phosphatidylethanolamine, three unidentified aminolipids and three unidentified lipids. Moreover, MK-6 was the only respiratory quinone. A comparison of the phylogenetic distinctiveness and the unique phenotypic and chemotaxonomic characteristics among strain WSW3-B6T and closely related type strains supported that strain WSW3-B6T (=KCTC 82708T=GDMCC 1.2627T) represents a novel species of the genus
Flavobacterium
, for which the name Flavobacterium litorale sp. nov. is proposed.
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Kong YH, Ren WT, Xu L, Cheng H, Zhou P, Wang CS, Wu YH, Xu XW. Mesobacterium pallidum gen. nov., sp. nov., Heliomarina baculiformis gen. nov., sp. nov. and Oricola indica sp. nov., three novel Alphaproteobacteria members isolated from deep-sea water in the southwest Indian ridge. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005236] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three Gram-staining-negative, aerobic and rod-shaped strains, designated as T40-1T, T40-3T and JL-62T, were isolated from the deep-sea water in the southwest Indian ridge. For strain T40-1T, growth occurred at 15–37 °C (optimum, 28 °C), pH 6.0–9.0 (optimum, pH 7.5) and in the presence of 0.5–5.0 % NaCl (w/v; optimum, 2.0 %). Strain T40-3T could grow at 15–40 °C (optimum, 28 °C), with 0.5–11.0 % NaCl (optimum, 2.0 %, w/v) at pH 6.0–9.5 (optimum, 8.0). The temperature, pH and salinity ranges for growth of strain JL-62T were 15–40 °C (optimum, 30 °C), pH 5.5–9.0 (optimum, pH 7.5–8.0) and 0.5–9.0 % NaCl (w/v; optimum, 4.0 %). Ubiquinone-10 was the sole ubiquinone in all strains, the major fatty acids (>20 %) were summed feature 8 (C18 : 1
ω7c / C18 : 1
ω6c). The major polar lipids of strains T40-1T and T40-3T were phosphatidylcholine, phosphatidylglycerol, phosphatidylethanolamine and diphosphatidylglycerol. Strain JL-62T contained phosphatidylmonomethylethanolamine, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and sulfoquinovosyldiacylglycerol as major polar lipids. Phylogenetic trees based on 16S rRNA gene and core-genomic sequences revealed affiliation of strains T40-1Tand T40-3T to the family
Roseobacteraceae
and formed two independent clades from other
Roseobacteraceae
genera, and those two strains had average nucleotide identities of 62.0–72.0 % to their phylogenetically related species which fell into to the genus boundary range, indicating that they represent two novel genera. While strain JL-62T represents a novel species in the genus
Oricola
belonging to the family
Phyllobacteriaceae
, which was supported by overall genomic relatedness index calculations. The DNA G+C contents of strains T40-1T, T40-3T and JL-62T were 66.5, 60.1 and 62.1 mol %, respectively. Based on the polyphasic taxonomic data, strains T40-1T (=MCCC M24557T=KCTC 82975T) and T40-3T (=MCCC 1K05135T=KCTC 82976T) are classified as representing two novel genera belonging to the family
Roseobacteraceae
with the names Mesobacterium pallidum gen. nov., sp. nov. and Heliomarina baculiformis gen. nov., sp. nov. are proposed, and strain JL-62T (=MCCC M24579T=KCTC 82974T) is proposed to represent a novel species within the genus
Oricola
with the name Oricola indica sp. nov. is proposed.
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Affiliation(s)
- Yan-Hui Kong
- 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
| | - Wen-Ting Ren
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, PR China
| | - Lin Xu
- 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
| | - Peng Zhou
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, PR China
| | - Chun-Sheng Wang
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, PR China
| | - Yue-Hong Wu
- 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
| | - 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
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6
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Lan M, Yang T, Song Y, Lv L, Wang H, Chen Q, Chen K. Taishania pollutisoli gen. nov., sp. nov., Isolated from Tetrabromobisphenol A-Contaminated Soil. Curr Microbiol 2021; 78:2563-2568. [PMID: 33974098 DOI: 10.1007/s00284-021-02522-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/26/2021] [Indexed: 11/29/2022]
Abstract
Strain CZZ-1T was isolated from long-term TBBPA-contaminated soil Zaozhuang city, Shandong province, People's Republic of China. CZZ-1T was pink-pigmented, Gram-stain-negative, rod-shaped, non-motile and aerobic. The 16S rRNA gene analysis indicated that strain CZZ-1T shows high similarities to Fluviicola taffensis DSM 16823T (92.6%) and Fluviicola hefeinensis KACC 16597T (92.5%) and less than 91% sequence similarities to other genus or species in the family Crocinitomicaceae. It was able to grow at 10-37 °C, with 0-6% (w/v) NaCl. It could hydrolyze gelatin, but could not reduce nitrates to nitrites. The predominant fatty acids of strain CZZ-1T were iso-C15:0 (51.3%), C15:0 2-OH (11.0%), iso-C17:0 3-OH (8.0%), C14: 0 (7.0%), iso-C15:1 G (6.8%) and Summed Feature 3 (C16:1 ω7c and/or C16:1 ω6c, 4.4%). The polar lipid profile was composed of five unidentified lipids, two unidentified phospholipids, one phosphatidylethanolamine, one unidentified aminolipid and one unidentified glycolipid. The predominant respiratory quinone was MK-6. The genomic DNA G+C content of strain CZZ-1T was 41.5 mol%. Based on data from phenotypic, chemotaxonomic and genotypic analysis in this study, strain CZZ-1T represents a novel species in a new genus in the family Crocinitomicaceae, for which the name Taishania pollutisoli gen. nov., sp. nov. is proposed. The type strain is CZZ-1T (= KCTC 52343T = GDMCC 1.2270T).
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Affiliation(s)
- Minjian Lan
- Key Lab of Microbiological Engineering of Agricultural Environment, Department of Microbiology, College of Life Sciences, Ministry of Agriculture, Nanjing Agricultural University, 210095, Nanjing, People's Republic of China
| | - Tunan Yang
- Key Lab of Microbiological Engineering of Agricultural Environment, Department of Microbiology, College of Life Sciences, Ministry of Agriculture, Nanjing Agricultural University, 210095, Nanjing, People's Republic of China
| | - Yue Song
- College of Life Sciences, Zaozhuang University, 277160, Zaozhuang, People's Republic of China
| | - Lijie Lv
- College of Life Sciences, Zaozhuang University, 277160, Zaozhuang, People's Republic of China
| | - Hongmei Wang
- College of Life Sciences, Zaozhuang University, 277160, Zaozhuang, People's Republic of China
| | - Qing Chen
- Institute of Organic Contaminant Control and Soil Remediation, College of Resource and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China. .,College of Life Sciences, Zaozhuang University, 277160, Zaozhuang, People's Republic of China.
| | - Kai Chen
- Key Lab of Microbiological Engineering of Agricultural Environment, Department of Microbiology, College of Life Sciences, Ministry of Agriculture, Nanjing Agricultural University, 210095, Nanjing, People's Republic of China.
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Alterinioella nitratireducens gen. nov., sp. nov., Isolated from Seawater in the West Pacific Ocean. Curr Microbiol 2021; 78:2455-2463. [PMID: 33893528 DOI: 10.1007/s00284-021-02475-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 03/22/2021] [Indexed: 10/21/2022]
Abstract
A novel Gram-negative, nonspore forming, nonmotile, and short-rod-shaped aerobic bacterium, designated DY48A3-103T, was isolated from a seawater sample collected from the West Pacific Ocean. Strain DY48A3-103T showed oxidase-positive and catalase-positive activities. Growth was observed at 10-37 °C (optimum 30 °C), at pH 6.5-9.5 (optimum 8.0) and in 1-11% NaCl (optimum 3%, w/v). 16S rRNA gene sequence analysis exhibited 96.3%, 96.1%, 96.0%, and 94.9% sequence similarity to the type strains Rhodophyticola porphyridii MA-7-27T, Nioella sediminis JS7-11T, N. nitratireducens SSW136T, and Jannaschia helgolandensis DSM 14858T, respectively. Strain DY48A3-103T and the type strains of phylogenetically related species have 61.7-75.4% AAI values, which fell into to the genus boundary range (60-80% AAI). Phylogenetic trees based on the 16S rRNA gene sequences and the genome sequences of strain DY48A3-103T revealed that it was affiliated to the members of the family Rhodobacteraceae. The G+C content was 65.4%. The sole isoprenoid quinone was Q-10. The predominant polar lipids were phosphatidylcholine and phosphatidylglycerol. Major fatty acids were summed feature 8 (comprising C18:1ω7c and/or C18:1ω6c), C19:0 cyclo ω8c, and C16:0. On the basis of the phenotypic, chemotaxonomic, and genomic properties, strain DY48A3-103t is proposed to represent a novel genus and a novel species, Alterinioella nitratireducens gen. nov., sp. nov., in the family Rhodobacteraceae. The type strain is DY48A3-103T (= KCTC 72738T = MCCC 1K04322T).
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8
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Aestuariibaculum sediminum sp. nov., a marine bacterium isolated from a tidal flat in Zhoushan. Arch Microbiol 2021; 203:2953-2960. [PMID: 33770231 DOI: 10.1007/s00203-021-02262-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/19/2021] [Accepted: 02/22/2021] [Indexed: 10/21/2022]
Abstract
A Gram-staining-negative, non-motile, strictly aerobic bacterium, designated as strain TT11T, was isolated from a sediment sample of a tidal flat connected in Zhoushan, China. Cells of strain TT11T are spherical, halotolerant, catalase- and oxidase-positive, and produce carotenoid-like pigments. Colonies were 0.5-1.0 mm diameter, smooth, round, convex and orange-yellow after growth on marine agar at 30 °C for 24 h. Growth of the strain TT11T was observed at 10-40 °C (optimum, 35 °C), at pH 6.0-9.5 (optimum, pH 6.5), and in the presence of 0-8.0% (w/v) NaCl (optimum, 0.5-1.0%). The results of 16S rRNA gene sequence analysis revealed that strain TT11T represents a member of the genus Aestuariibaculum and was closely related to Aestuariibaculum suncheonense SC17T (97.2%) and Aestuariibaculum marinum IP7T (96.8%). The G + C content of the genome was 34.6%. The only respiratory quinone was MK-6. The major fatty acids (> 10%) were iso-C15:0, iso-C15:1 G and iso-C17:0 3-OH. The major polar lipids contained phosphatidylethanolamine, phosphoglycolipid, four unidentified aminolipids, four unidentified lipids and two unidentified glycolipids. On the basis of these genomic, chemotaxonomic and phenotypic characteristics, we propose a novel species Aestuariibaculum sediminum sp. nov. with the type strain TT11T (= KCTC 82195T = MCCC 1K04734T).
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9
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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.
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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
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Bowman JP. Out From the Shadows - Resolution of the Taxonomy of the Family Cryomorphaceae. Front Microbiol 2020; 11:795. [PMID: 32431677 PMCID: PMC7214798 DOI: 10.3389/fmicb.2020.00795] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 04/03/2020] [Indexed: 12/18/2022] Open
Abstract
The family Cryomorphaceae for many years has been a poorly defined taxonomic group within the order Flavobacteriales, phylum Bacteroidetes. Members of the Cryomorphaceae, apparently consisting of multiple-family level clades, have been mostly but not exclusively detected in saline ecosystems. The problems with the taxonomy of this group have stemmed from inadequate resolution of taxonomic groups using 16S rRNA gene sequences, sparse numbers of cultivated taxa, and limited phenotypic distinctiveness. The Genome Tiaxonomc Database (GTDB), which is based on normalized taxonomic ranks includes Cryomorphaceae as containing the genera Owenweeksia and Schleiferia. This is at odds with the official taxonomy that places these genera in the family Schleiferiaceae. The other Cryomorphaceae affiliated species have even more uncertain taxonomic positions including Cryomorpha ignava. To clarify the taxonomy of Cryomorphaceae, genomes were generated for all type strains of the family Cryomorphaceae lacking such data. The GTDB-toolkit (GTDB-tk) was used to place taxa in the GTDB, which revealed novelty at the family level for some of these type strains. 16S rRNA gene sequences and concatenated protein sequences were used to further evaluate the taxonomy of the order Flavobacteriales. From the data, the GTDB enabled successful clarification of the taxonomy of the family Cryomorphaceae. A number of placeholder families were given Latinized names. It is proposed that the family Cryomorphaceae is emended to include only the species Cryomorpha ignava. The family Schleiferiaceae is emended to account for the expansion of its membership. Luteibaculum oceani represents a new family designated Luteibaculaceae fam. nov. Vicingus serpentipes is the representative of Vicingaceae fam. nov. while Salibacter halophilus represents Salibacteraceae fam. nov.
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Affiliation(s)
- John P Bowman
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, Australia
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