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Park S, Kim I, Chhetri G, Jung Y, Woo H, Seo T. Cellulomonas alba sp. nov. and Cellulomonas edaphi sp. nov., isolated from wetland soils. Int J Syst Evol Microbiol 2024; 74. [PMID: 38214698 DOI: 10.1099/ijsem.0.006235] [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: 01/13/2024] Open
Abstract
Two novel strains were isolated from wetland soils in Goyang, Republic of Korea. The two Gram-stain-positive, facultatively anaerobic, rod-shaped bacterial-type strains were designated MW4T and MW9T. Phylogenomic analysis based on whole-genome sequences suggested that both strains belonged to the genus Cellulomonas. The cells of strain MW4T were non-motile and grew at 20-40 °C (optimum, 35 °C), at pH 6.0-10.0 (optimum, pH 8.0) and in the presence of 0-1.0% NaCl (optimum, 0 %). The cells of strain MW9T were non-motile and grew at 20-40 °C (optimum, 35 °C), at pH 5.0-9.0 (optimum, pH 8.0) and in the presence of 0-1.0% NaCl (optimum, 0 %). The average nucleotide identity (77.1-88.1 %) and digital DNA-DNA hybridization values (21.0-34.8 %) between the two novel strains and with their closely related strains fell within the range for the genus Cellulomonas. The novel strains MW4T and MW9T and reference strains possessed alkane synthesis gene clusters (oleA, oleB, oleC and oleD). Phylogenomic, phylogenetic, average nucleotide identity, digital DNA-DNA hybridization, physiological and biochemical data indicated that the novel strains were distinct from other members of the family Cellulomonadaceae. We propose the names Cellulomonas alba sp. nov. (type strain MW4T=KACC 23260T=TBRC 17645T) and Cellulomons edaphi sp. nov. (type strain MW9T=KACC 23261T=TBRC 17646T) for the two strains.
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Affiliation(s)
- Sunho Park
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Inhyup Kim
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Geeta Chhetri
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Yonghee Jung
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Haejin Woo
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Taegun Seo
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
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Park S, Kim I, Chhetri G, So Y, Jung Y, Woo H, Seo T. Roseateles albus sp. nov., Roseateles koreensis sp. nov. and Janthinobacterium fluminis sp. nov., isolated from freshwater at Jucheon River, and emended description of Roseateles aquaticus comb. nov. Int J Syst Evol Microbiol 2023; 73. [PMID: 37750754 DOI: 10.1099/ijsem.0.006043] [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: 09/27/2023] Open
Abstract
Three Gram-stain-negative, facultatively anaerobic, rod-shaped, catalase-positive, oxidase-negative bacterial strains were designated as hw1T, hw8T and hw3T. Strains hw1T, hw8T and hw3T grew at 15-28 °C (optimum, 25 °C), 15-35 °C (optimum, 30 °C) and 4-28 °C (optimum, 20 °C), respectively, and at pH 7.0-12.0 (optimum, pH 9.0), pH 6.0-11.0 (optimum, pH 9.0) and 5.0-12.0 (optimum, pH 7.0), respectively. Additionally, strains hw1T and hw8T only grew when the NaCl concentration was 0 %, while strain hw3T grew at between 0 and 0.5 % (w/v; optimum, 0 %). The average nucleotide identity (ANI) values between strains hw1T, hw8T and the Roseateles type strains ranged from 73.8 to 84.2 %, while the digital DNA-DNA hybridization (dDDH) values ranged from 19.7 to 27.5 %. The ANI values between strain hw3T and the Janthinobacterium type strains ranged from 78.7 to 80.7 %, while dDDH values ranged from 22.3 to 23.0 %. The draft genomes of strains hw1T, hw8T and hw3T consisted of 5.5, 4.4 and 5.9 Mbp, with DNA G+C contents of 61.7, 61.8 and 66.0 mol%, respectively. The results of the dDDH, ANI, phylogenetic, biochemical and physiological analyses indicated that the novel strains were distinct from other members of their genera. Thus, we proposed the names Roseateles albus sp. nov. (type strain hw1T= KACC 22887T= TBRC 16613T), Roseateles koreensis sp. nov. (type strain hw8T= KACC 22885T= TBRC 16614T) and Janthinobacterium fluminis sp. nov. (type strain hw3T= KACC 22886T= TBRC 16615T).
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Affiliation(s)
- Sunho Park
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Inhyup Kim
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Geeta Chhetri
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Yoonseop So
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Yonghee Jung
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Haejin Woo
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Taegun Seo
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
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Park S, Kim I, Chhetri G, So Y, Jung Y, Woo H, Seo T. Alteromonas gilva sp. nov. and Erythrobacter fulvus sp. nov., isolated from a tidal mudflat. Int J Syst Evol Microbiol 2023; 73. [PMID: 37676705 DOI: 10.1099/ijsem.0.006032] [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: 09/08/2023] Open
Abstract
Strains chi3T and sf7T were collected from a tidal mudflat around Dongmak beach in Ganghwa, Republic of Korea. Both strains were Gram-stain-negative, aerobic or facultatively anaerobic, and rod-shaped. Results of phylogenetic tree analysis based on 16S rRNA and whole-genome sequences suggested that strains chi3T and sf7T belong to the genera Alteromonas and Erythrobacter, respectively. The cells of strain chi3T were non-motile and grew at 15-45 °C (optimum, 38 °C), at pH 6.0-10.0 (optimum, pH 8.0) and in the presence of 0-9.0 % (w/v) NaCl (optimum, 2.0 %). The cells of strain sf7T were motile as they had flagella and grew at 20-48 °C (optimum, 38 °C), at pH 6.0-10.0 (optimum, pH 9.0) and in the presence of 0-5.0 % (w/v) NaCl (optimum, 1.0 %). Strains chi3T and sf7T have average nucleotide identity values (70.0-70.4% and 78.9-81.7 %) and digital DNA-DNA hybridization values (21.8-22.3% and 21.0-25.6 %) with reference strains in the genera Alteromonas and Erythrobacter, respectively. Data from digital DNA-DNA hybridization, as well as phylogenetic, biochemical and physiological analyses, indicated the distinction of the two strains from the genera Alteromonas and Erythrobacter, respectively, and we thus propose the names Alteromonas gilva sp. nov. (type strain chi3T=KACC 22866T=TBRC 16612T) and Erythrobacter fulvus sp. nov. (type strain sf7T=KACC 22865T=TBRC 16611T).
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Affiliation(s)
- Sunho Park
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Inhyup Kim
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Geeta Chhetri
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Yoonseop So
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Yonghee Jung
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Haejin Woo
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Taegun Seo
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
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Kim I, Chhetri G, So Y, Park S, Jung Y, Woo H, Seo T. Characterization and Antioxidant Activity of Exopolysaccharides Produced by Lysobacter soyae sp. nov Isolated from the Root of Glycine max L. Microorganisms 2023; 11:1900. [PMID: 37630460 PMCID: PMC10456730 DOI: 10.3390/microorganisms11081900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/24/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Microbial exopolysaccharides (EPSs) have attracted attention from several fields due to their high industrial applicability. In the present study, rhizosphere strain CJ11T was isolated from the root of Glycine max L. in Goyang-si, Republic of Korea, and a novel exopolysaccharide was purified from the Lysobacter sp. CJ11T fermentation broth. The exopolysaccharide's average molecular weight was 0.93 × 105 Da. Its monosaccharide composition included 72.2% mannose, 17.2% glucose, 7.8% galactose, and 2.8% arabinose. Fourier-transform infrared spectroscopy identified the exopolysaccharide carbohydrate polymer functional groups, and the structural properties were investigated using nuclear magnetic resonance. In addition, a microstructure of lyophilized EPS was determined by scanning electron microscopy. Using thermogravimetric analysis, the degradation of the exopolysaccharide produced by strain CJ11T was determined to be 210 °C. The exopolysaccharide at a concentration of 4 mg/mL exhibited 2,2-diphenyl-1-picrylhydrazyl free-radical-scavenging activity of 73.47%. Phylogenetic analysis based on the 16S rRNA gene sequencing results revealed that strain CJ11T was a novel isolate for which the name Lysobacter soyae sp. nov is proposed.
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Affiliation(s)
| | | | | | | | | | | | - Taegun Seo
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea; (I.K.); (G.C.); (Y.S.); (S.P.); (Y.J.); (H.W.)
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Wang X, Wang YH, Yang HX, Chuang SC, Zhou CF, Yu X, Zhang H. Lysobacter lactosilyticus sp. nov., a Novel β-Galactosidase Producing Bacterial Strain Isolated from Farmland Soil Applied with Amino Acid Fertilizer. Curr Microbiol 2023; 80:43. [DOI: 10.1007/s00284-022-03155-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
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Lv X, Li Y, Cheng Y, Lai XH, Yang J, Lu S, Zhang G, Yang C, Jin D, Liu L, Xu J. Canibacter zhuwentaonis sp. nov. and Canibacter zhoujuaniae sp. nov. , isolated from Marmota himalayana. Int J Syst Evol Microbiol 2022; 72. [PMID: 36748412 DOI: 10.1099/ijsem.0.005633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Four Gram-stain-positive, facultatively anaerobic, non-motile, non-spore-forming and rod-shaped bacteria (lx-72T, lx-45, ZJ784T and ZJ955) were isolated from the respiratory tract or faeces of marmot (Marmota himalayana) from the Qinghai-Tibet Plateau in China. Analysis of the 16S rRNA gene sequences showed that all strains belong to the genus Canibacter and are more related to Canibacter oris CCUG 64069T (95.1-97.4 % similarity) than to the genus Leucobacter. Both strain pairs grew well at pH 6-9 and 15-42°C, and ZJ784T/ZJ955 could tolerate slightly higher NaCl (0.5-4.5 %, w/v) than lx-72T/lx-45(0.5-3.5 %). Based on whole-genome sequences, the average nucleotide identity and digital DNA-DNA hybridization values between our four isolates and their closest relative were below the species delineation thresholds of 70 % and 95-96 %. The common major fatty acids (>10 %) of our four strains were anteiso-C15 : 0 and anteiso-C17 : 0. For both new type strains, MK-8(H4) and MK-9(H4) were the major isoprenoid quinones, and diphosphatidylglycerol and phosphatidylglycerol were the main polar lipids. The genomic DNA G+C content of all strains was 53.9 mol%. Based on results from the genomic comparison, phylogenetic analysis, and physiological and biochemical characteristics, the four isolates represent two novel species in the genus Canibacter, for which the names Canibacter zhuwentaonis sp. nov. (type strain lx-72T=KCTC 49658T=GDMCC 1.2569T) and Canibacter zhoujuaniae sp. nov. (type strain ZJ784T=KCTC 49507T=GDMCC 1.1997T) are proposed.
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Affiliation(s)
- Xianglian Lv
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, Shanxi, PR China.,State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China
| | - Yinmei Li
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, Shanxi, PR China.,State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China
| | - Yanpeng Cheng
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, Shanxi, PR China.,State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China.,Shenzhen Center for Disease Control and Prevention, Shenzhen, PR China
| | - Xin-He Lai
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu 476000, PR China
| | - Jing Yang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China.,Shanghai Institute for Emerging and Re-emerging Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, PR China.,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, PR China
| | - Shan Lu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China.,Shanghai Institute for Emerging and Re-emerging Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, PR China.,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, PR China
| | - Gui Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China
| | - Caixin Yang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, Shanxi, PR China.,State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China
| | - Dong Jin
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China.,Shanghai Institute for Emerging and Re-emerging Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, PR China.,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, PR China
| | - Liyun Liu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China.,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, PR China
| | - Jianguo Xu
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, Shanxi, PR China.,State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, PR China.,Shanghai Institute for Emerging and Re-emerging Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, PR China.,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, PR China.,Institute of Public Health, Nankai University, Tianjin, PR China
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Characteristics and Biological Activity of Exopolysaccharide Produced by Lysobacter sp. MMG2 Isolated from the Roots of Tagetes patula. Microorganisms 2022; 10:microorganisms10071257. [PMID: 35888976 PMCID: PMC9325234 DOI: 10.3390/microorganisms10071257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/16/2022] [Accepted: 06/18/2022] [Indexed: 02/05/2023] Open
Abstract
In the present study, exopolysaccharide (EPS) produced by Lysobacter sp. MMG2 (lyEPS) was characterized and purified. The lyEPS-producing strain Lysobacter sp. MMG2 was isolated from the roots of Tagetes patula. When lyEPS was produced in tryptic soy broth with 1% glucose and the lyophilized powder was measured, the yield was found to be 0.67 g/L. The molecular weight (Mw) of lyEPS was 1.01 × 105 Da. Its monosaccharide composition includes 84.24% mannose, 9.73% glucose, 2.55% galactose, 2.77% arabinose, 0.32% xylose, and 0.03% rhamnose. Scanning electron microscopy (SEM) revealed that lyEPS has various round and rough surfaces. Fourier-transform infrared (FTIR) analysis identified its carbohydrate polymer functional groups. Moreover, thermogravimetric analysis of lyEPS revealed two events of mass loss: the first was water loss, which resulted in 3.97% mass loss and the second event occurred at approximately 212 °C. lyEPS could inhibit biofilm-producing pathogenic bacteria without any antimicrobial activity. Furthermore, lyEPS at a concentration of 4 mg/mL could exhibit potent 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical-scavenging activity (89.25%). These results indicate that lyEPS could be a promising candidate for industrial development if its biological activity is further explored.
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Lysobacter ciconiae sp. nov., and Lysobacter avium sp. nov., isolated from the faeces of an Oriental stork. J Microbiol 2022; 60:469-477. [DOI: 10.1007/s12275-022-1647-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/09/2022] [Accepted: 02/11/2022] [Indexed: 10/18/2022]
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Chen Y, Zhu L, Bai P, Cui S, Xin Y, Zhang Y, Zhang J. Hymenobacter terricola sp. nov., isolated from Antarctic soil. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005205] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strain 3F2T was isolated from a soil sample obtained from the surface of Deception Island, Antarctica. The isolate was a Gram-stain-negative, aerobic, non-motile, rod-shaped bacterium, and its colonies were red to pink in colour. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain 3F2T belonged to the genus
Hymenobacter
, family
Hymenobacteraceae
and was most closely related to
Hymenobacter sedentarius
DG5BT (97.0% sequence similarity),
Hymenobacter soli
PB17T (96.9%),
Hymenobacter terrae
DG7AT (96.8%) and
Hymenobacter rufus
S1-2-2-6T (96.5%). Growth occurred at 4–20 °C (optimum, 10 °C), up to 1.0 % (w/v) NaCl (optimum, 0%) and pH 6.0–8.0 (optimum, pH 7.0). The chemotaxonomic characteristics of strain 3F2T, which had MK-7 as its predominant menaquinone and summed feature 3 (C16:1
ω7c and/or C16:1
ω6c), iso-C15:0, anteiso-C15:0 and C16:1
ω5c as its major fatty acids, were consistent with classification in the genus
Hymenobacter
. The polar lipid profile of strain 3F2T comprised phosphatidylethanolamine, two unidentified aminolipids, two unidentified aminophospholipids and three unidentified polar lipids. The genome of strain 3F2T was 6.56 Mbp with a G+C content of 61.5 mol%. Average nucleotide identity (ANI) values between 3F2T and the other species of the genus
Hymenobacter
were found to be low (ANIm <87.0%, ANIb <82.0% and OrthoANIu <83.0%). Furthermore, digital DNA–DNA hybridization and average amino acid identity values between strain 3F2T and the closely related species ranged from 20.0 to 26.3% and from 64.0 to 81.1 %, respectively. Based on the results of our phylogenetic, phenotypic, genotypic and chemotaxonomic analyses, it is concluded that strain 3F2T represents a novel species within the genus
Hymenobacter
, for which the name Hymenobacter terricola sp. nov. is proposed. The type strain is 3F2T (=KCTC 72468T=CGMCC 1.13716T).
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Affiliation(s)
- Ya Chen
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
| | - Lin Zhu
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
| | - Pengze Bai
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
| | - Siqi Cui
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
| | - Yuhua Xin
- China General Microbiological Culture Collection Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Ying Zhang
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
| | - Jianli Zhang
- Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
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Fuscibacter oryzae gen. nov., sp. nov., a phosphate-solubilizing bacterium isolated from the rhizosphere of rice plant. Antonie van Leeuwenhoek 2021; 114:1453-1463. [PMID: 34275053 DOI: 10.1007/s10482-021-01619-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/08/2021] [Indexed: 10/20/2022]
Abstract
An ovoid to rod shaped, white to brown pigmented, facultative anaerobic, mesophilic, non-phototrophic, Gram-staining-negative, non-motile, multiply by binary fission designated strain KVB23T, which was isolated from root of rice plant, near Ilsan, South Korea, was investigated for its taxonomic position by polyphasic approach. Optimal growth was found to occur at 30˚C, at pH 6.5 and in the absence of NaCl on R2A. Phylogenetic analysis based on the 16S rRNA gene sequence of strain KVB23T revealed that it formed a distinct lineage, as a separate deep branch within the family Rhodobacteriaceae, with < 96.5% sequence similarity to representatives of the genera Rhodobacter, Xinfangfangia, Tabrizicola, Falsirhodobacter, Haematobacter, Paenirhodobacter, Pseudorhodobacter and Pararhodobacter. Based in 16S rRNA sequences strain KVB23T was most closely related to Tabrizicola fusiformis KCTC 62105 T (96.5%) and Rhodobacter thermarum KCTC 52712 T (96.2%). The draft genome of strain KVB23T was 3.80 bp long with a DNA G + C content of 63.1%. Genome of strain KVB23T harboured gene clusters for tryptophan and cobalamin biosynthesis. The strain contained Q-10 as the sole respiratory quinone. The predominant fatty acids were found to consist of C16:0, C18:0 and summed feature 8 (comprising C18:1 ω7c and / or C18:1 ω6). The polar lipids were identified as diphosphatidylglycerol, phosphatidylethanolamine, seven unidentified phosphoglycolipids, two unidentified aminophosphoglycolipid, one unidentified glycolipid and four unidentified lipids. Phosphate-solubilizing bacteria have the ability to dissolve insoluble phosphates and enhance the soil fertility. Strain KVB23T can solubilize calcium phosphate tribasic. Phosphate solubilizing and tryptophan biosynthesis property of strain KVB23T could be a possible factor for the increase in growth of rice plant. Differential phenotypic, chemotaxonomic and genotypic properties, together with the phylogenetic distinctiveness, demonstrated that strain KVB23T was found to represent a novel genus in the Rhodobacteriaceae family, for which the name Fuscibacter oryzae gen. nov., sp. nov. is proposed, with the type strain KVB23T(= KACC 21711 T = NBRC 114716 T).
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Complete Genome Sequences of Two Lysobacter Strains, Isolated from Seawater ( Lysobacter caseinilyticus) and Soil ( Lysobacter helvus) in South Korea. Microbiol Resour Announc 2021; 10:e0033721. [PMID: 34264103 PMCID: PMC8281078 DOI: 10.1128/mra.00337-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Lysobacter species produce lysobactin, a depsipeptide antibiotic that is effective against methicillin-resistant Staphylococcus aureus and vancomycin-resistant Staphylococcus aureus. Here, we report complete genome sequences of two Lysobacter strains, which were isolated from seawater (Lysobacter caseinilyticus) and soil (Lysobacter helvus) in South Korea.
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Kim KR, Kim KH, Khan SA, Kim HM, Han DM, Jeon CO. Lysobacter arenosi sp. nov. and Lysobacter solisilvae sp. nov. isolated from soil. J Microbiol 2021; 59:709-717. [PMID: 34061342 DOI: 10.1007/s12275-021-1156-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 11/28/2022]
Abstract
Two Gram-stain negative, yellow-pigmented, and mesophilic bacteria, designated strains R7T and R19T, were isolated from sandy and forest soil, South Korea, respectively. Both strains were non-motile rods showing catalase- and oxidase-positive activities. Both strains were shown to grow at 10-37°C and pH 6.0-9.0, and in the presence of 0-1.5% (w/v) NaCl. Strain R7T contained iso-C14:0, iso-C15:0, iso-C16:0, and summed feature 9 (comprising C16:0 10-methyl and/or iso-C17:1ω9c), whereas strain R19T contained iso-C11:0 3-OH, C16:1ω7c alcohol, iso-C11:0, iso-C15:0, iso-C16:0, and summed feature 9 (comprising C16:0 10-methyl and/or iso-C17:1ω9c) as major cellular fatty acids (> 5%). Both strains contained ubiquin-one-8 as the sole isoprenoid quinone and phosphatidylglycerol, phosphatidylethanolamine, and an unidentified phospholipid as the major polar lipids. The DNA G + C contents of strains R7T and R19T calculated from their genomes were 66.9 mol% and 68.9 mol%, respectively. Strains R7T and R19T were most closely related to Lysobacter panacisoli C8-1T and Lysobacter niabensis GH34-4T with 98.7% and 97.8% 16S rRNA sequence similarities, respectively. Phylogenetic analyses based on 16S rRNA gene sequences showed that strains R7T and R19T formed distinct phylogenetic lineages within the genus Lysobacter. Based on phenotypic, chemotaxonomic, and molecular features, strains R7T and R19T represent novel species of the genus Lysobacter, for which the names Lysobacter arenosi sp. nov. and Lysobacter solisilvae sp. nov. are proposed. The type strains of L. arenosi and L. solisilvae are R7T (= KACC 21663T = JCM 34257T) and R19T (= KACC 21767T = JCM 34258T), respectively.
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Affiliation(s)
- Kyeong Ryeol Kim
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Kyung Hyun Kim
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Shehzad Abid Khan
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Hyung Min Kim
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Dong Min Han
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Che Ok Jeon
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea.
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13
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Adler A, Holliger C. Multistability and Reversibility of Aerobic Granular Sludge Microbial Communities Upon Changes From Simple to Complex Synthetic Wastewater and Back. Front Microbiol 2020; 11:574361. [PMID: 33324361 PMCID: PMC7726351 DOI: 10.3389/fmicb.2020.574361] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 10/12/2020] [Indexed: 01/31/2023] Open
Abstract
Aerobic granular sludge (AGS) is a promising alternative wastewater treatment to the conventional activated sludge system allowing space and energy saving. Basic understanding of AGS has mainly been obtained using simple wastewater containing acetate and propionate as carbon source. Yet, the aspect and performances of AGS grown in such model systems are different from those obtained in reactor treating real wastewater. The impact of fermentable and hydrolyzable compounds on already formed AGS was assessed separately by changing the composition of the influent from simple wastewater containing volatile fatty acids to complex monomeric wastewater containing amino acids and glucose, and then to complex polymeric wastewater containing also starch and peptone. The reversibility of the observed changes was assessed by changing the composition of the wastewater from complex monomeric back to simple. The introduction of fermentable compounds in the influent left the settling properties and nutrient removal performance unchanged, but had a significant impact on the bacterial community. The proportion of Gammaproteobacteria diminished to the benefit of Actinobacteria and the Saccharibateria phylum. On the other hand, the introduction of polymeric compounds altered the settling properties and denitrification efficiency, but induced smaller changes in the bacterial community. The changes induced by the wastewater transition were only partly reversed. Seven distinct stables states of the bacterial community were detected during the 921 days of experiment, four of them observed with the complex monomeric wastewater. The transitions between these states were not only caused by wastewater changes but also by operation failures and other incidences. However, the nutrient removal performance and settling properties of the AGS were globally maintained due to the functional redundancy of its bacterial community.
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Affiliation(s)
- Aline Adler
- Laboratory for Environmental Biotechnology, School for Architecture, Civil and Environmental Engineering, Environmental Engineering Institute, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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14
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Sphingomonas xanthus sp. nov., Isolated from Beach Soil. Curr Microbiol 2020; 78:403-410. [PMID: 33146742 DOI: 10.1007/s00284-020-02273-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 10/23/2020] [Indexed: 10/23/2022]
Abstract
A light yellow-colored, Gram-stain-negative, aerobic, oxidase- and catalase-positive, flagellated bacterium with motility, designated as strain AE3T was isolated from soil. Cells of strain AE3T are rod-shaped, and the colonies are round and convex. Phylogenetic analysis based on 16S rRNA gene sequence revealed that strain AE3T forms a lineage within the genus Sphingomonas of the family Sphingomonadaceae and is most closely related to Sphingomonas edaphi KCTC 62107 T (98.6%), Sphingomonas oryziterrae KCTC 22476 T (97.9%), and Sphingomonas jaspsi DSM 18422 T (97.4%). The growth of the strain AE3T was observed under 18-42 °C (optimum, 37 °C), pH 6.0-9.0 (optimum, pH 6.5-7.0), and in the absence of NaCl. Strain AE3T contains Q-10 as a predominant respiratory quinone, and the major fatty acids are C17:1 ω6c, summed feature 8 (C18:1 ω7c), and summed feature 3 (C16:1 ω7c and/or C16:1 ω6c). The major polar lipids are sphingoglycolipids, unidentified phospholipids, and phosphatidylethanolamine. The DNA G + C content of strain AE3T is 63.6 mol%. The nearly complete genome of strain AE3T consists of 2.2 Mbp, (2,168 total protein-coding genes, 45 tRNAs, 4 ncRNAs, and 3 rRNAs). Genomic taxonomy analysis demonstrates that the novel strain has < 75.9% average nucleotide identity value, and also shows < 24.9% in silico DNA-DNA hybridization value compared to related taxa, which clearly separates strain AE3T from other species of the genus Sphingomonas with values below the thresholds for species delineation. Based on phenotypic, genotypic, and phylogenetic analyses, strain AE3T represents a novel species of the genus Sphingomonas, for which the name Sphingomonas xanthus sp. nov. is proposed. The type strain of Sphingomonas xanthus is AE3T (= KCTC 620106 T = JCM 32376 T).
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Lee JC, Whang KS. Lysobacter telluris sp. nov., isolated from Korean rhizosphere soil. Arch Microbiol 2020; 203:287-293. [PMID: 32920671 DOI: 10.1007/s00203-020-02032-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/04/2020] [Accepted: 09/02/2020] [Indexed: 11/28/2022]
Abstract
A Gram-stain-negative, aerobic, non-motile, non-spore-forming light-yellow-coloured rod-shaped bacterial strain, designated YJ15T, was isolated from soil at Bigeum island in Korea. Growth was observed at 10-37 °C (optimum, 28 °C), at pH 6.0-7.5 (optimum, pH 7.0) and in the absence of NaCl. Based on 16S rRNA gene sequence analysis, strain YJ15T was closely related to 'Lysobacter tongrenensis' YS037T (97.8%), Lysobacter pocheonensis Gsoil193T (96.5%) and Lysobacter daecheongensis Dae08T (95.8%) and phylogenetically grouped together with 'Lysobacter tongrenensis' YS037T, Lysobacter dokdonensis DS-58T and Lysobacter pocheonensis Gsoil 193T. The DNA-DNA relatedness between strain YJ15T and 'Lysobacter tongrenensis' KCTC 52206T was 12% and the phylogenomic analysis based on the whole genome sequence demonstrated that strain YJ20T formed a distinct phyletic line with Lysobacterlter dokdonensis DS-58T showing average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values of 76.3 and 21.3%, respectively. The predominant ubiquinone was identified as Q-8, and polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and two unidentified aminolipids. The major fatty acids were iso-C17:1 ω9c, iso-C15:0, iso-C16:0 and iso-C17:0. The genomic DNA G + C content was 68.2 mol %. On the basis of phenotypic, chemotaxonomic properties and phylogenetic analyses in this study, strain YJ15T is considered to represent a novel species of the genus Lysobacter, for which the name Lysobacter telluris sp. nov. is proposed. The type strain is YJ15T (= KACC 19552T = NBRC 113197T).
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Affiliation(s)
- Jae-Chan Lee
- Institute of Microbial Ecology and Resources, Mokwon University, 88 Doanbuk-ro, Seo-gu, Daejeon, 35349, Republic of Korea.,Department of Microbiology & Resources, College of Science & Technology, Mokwon University, 88 Doanbuk-ro, Seo-gu, Daejeon, 35349, Republic of Korea
| | - Kyung-Sook Whang
- Institute of Microbial Ecology and Resources, Mokwon University, 88 Doanbuk-ro, Seo-gu, Daejeon, 35349, Republic of Korea. .,Department of Microbiology & Resources, College of Science & Technology, Mokwon University, 88 Doanbuk-ro, Seo-gu, Daejeon, 35349, Republic of Korea.
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Jin CZ, Song X, Sung YJ, Jin FJ, Li T, Oh HM, Lee HG, Jin L. Lysobacter profundi sp. nov., isolated from freshwater sediment and reclassification of Lysobacter panaciterrae as Luteimonas panaciterrae comb. nov. Int J Syst Evol Microbiol 2020; 70:3878-3887. [DOI: 10.1099/ijsem.0.004253] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A polyphasic taxonomic study was carried out on strains CHu50b-3-2T and CHu40b-3-1 isolated from a 67 cm-long sediment core collected from the Daechung Reservoir at a water depth of 17 m, Daejeon, Republic of Korea. The cells of the strains were Gram-stain-negative, non-spore-forming, non-motile and rod-shaped. Comparative 16S rRNA gene sequence studies showed a clear affiliation of two strains with γ-Proteobacteria, which showed the highest pairwise sequence similarities to
Lysobacter hankyongensis
KTce-2T (96.5 %),
Lysobacter pocheonensis
Gsoil193T (96.3 %),
Lysobacter ginsengisoli
Gsoil 357T (96.1 %),
Lysobacter solanacearum
T20R-70T (96.1 %),
Lysobacter brunescens
KCTC 12130T (95.4 %) and
Lysobacter capsici
YC5194T (95.3 %). The phylogenetic analysis based on 16S rRNA gene sequences showed that the strains formed a clear phylogenetic lineage with the genus
Lysobacter
. The major fatty acids were identified as summed feature 9 (iso-C17 : 1
ω9c and/or C18 : 1 10-methyl), iso-C15 : 0, iso-C16 : 0 and iso-C17 : 0. The respiratory quinone was identified as ubiquinone Q-8. The major polar lipids were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine and an unidentified phospholipid. The genomic DNA G+C content was determined to be 66.8 mol% (genome) for strain CHu50b-3-2T and 66.4 mol% (HPLC) for strain CHu40b-3-1. Based on the combined genotypic and phenotypic data, we propose that strains CHu50b-3-2T and CHu40b-3-1 represent a novel species of the genus
Lysobacter
, for which the name Lysobacter profundi sp. nov. is proposed. The type strain is CHu50b-3-2T (=KCTC 72973T=CCTCC AB 2019129T). Besides
Lysobacter panaciterrae
Gsoil 068T formed a phylogenetic group together with strain
Luteimonas aquatica
RIB1-20T (EF626688) that is clearly separated from all other known
Lysobacter
strains. Based on the phylogenetic relationships together with fatty acid compositions,
Lysobacter panaciterrae
Gsoil 068T should be reclassified as a member of the genus Luteimonas: Luteimonas aquatica comb. nov. (type strain Gsoil 068T=KCTC 12601T=DSM 17927T).
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Affiliation(s)
- Chun-Zhi Jin
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, PR China
| | - Xiuli Song
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, PR China
| | - Yun Ju Sung
- BioNano Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Feng-Jie Jin
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, PR China
| | - Taihua Li
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, PR China
| | - Hee-Mock Oh
- Cell Factory Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Hyung-Gwan Lee
- Cell Factory Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Long Jin
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, PR China
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Chhetri G, Kim J, Kim I, Kim H, Seo T. Hymenobacter setariae sp. nov., isolated from the ubiquitous weedy grass Setaria viridis. Int J Syst Evol Microbiol 2020; 70:3724-3730. [DOI: 10.1099/ijsem.0.004226] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, short-rod, aerobic, non-motile, red to pink-pigmented bacterium, designated Fur1T, was isolated from the dry spikelet clusters of a plant called Setaria viridis near Dongguk University. Phylogenetic analysis conducted based on 16S rRNA gene sequences indicated that strain Fur1T belonged to the genus
Hymenobacter
of the family
Hymenobacteraceae
. The 16S rRNA gene of Fur1T showed highest sequence similarity to those of
Hymenobacter metalli
KACC 17381T (97.5 %) and
Hymenobacter marinus
KACC 19042T (97.1 %). Growth occurred at 4–37 °C (optimum, 25–28 °C), up to 1.0 % NaCl (optimum, 0 %) and pH 5.5–9.0 (optimum, pH 6.0–7.5). The major fatty acids of strain Fur1T were identified as iso-C15 : 0, C16 : 1
ω5c, anteiso-C15 : 0, summed feature 3 (comprising C16 : 1
ω7c and/or C16 : 1
ω6c) and summed feature 4 (comprising anteiso-C17 : 1B and/or iso-C17 : 1I) as the major cellular fatty acids. The predominant respiratory quinone was identified as MK-7. The polar lipids were phosphatidylethanolamine, five unidentified aminophospholipids, two unidentified phospholipids, one unidentified glycolipid and one unidentified polar lipid. The genomic DNA G+C content based on the draft genome sequence was 58.7 mol%. DNA–DNA relatedness between strain Fur1T and its closest relative was below 70 %. Characterization based on phylogenetic, chemotaxonomic and phenotypic analyses clearly indicated that strain Fur1T represents a novel species of the genus
Hymenobacter
, for which the name Hymenobacter setariae sp. nov. is proposed. The type strain is Fur1T (=KACC 19903T=NBRC=113691T).
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Affiliation(s)
- Geeta Chhetri
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, Republic of Korea
| | - Jiyoun Kim
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, Republic of Korea
| | - Inhyup Kim
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, Republic of Korea
| | - Hyungdong Kim
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, Republic of Korea
| | - Taegun Seo
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, Republic of Korea
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Oren A, Garrity G. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2020; 70:1443-1446. [PMID: 32228802 DOI: 10.1099/ijsem.0.003991] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Aharon Oren
- The Institute of Life Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401 Jerusalem, Israel
| | - George Garrity
- Department of Microbiology & Molecular Genetics, Biomedical Physical Sciences, Michigan State University, East Lansing, MI 48824-4320, USA
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Xu L, Huang XX, Fan DL, Sun JQ. Lysobacter alkalisoli sp. nov., a chitin-degrading strain isolated from saline-alkaline soil. Int J Syst Evol Microbiol 2020; 70:1273-1281. [PMID: 31851606 DOI: 10.1099/ijsem.0.003911] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strains of Lysobacter, thought to play vital roles in the environment for their high enzyme production capacity, are ubiquitous in various ecosystems. During an analysis of bacterial diversity in saline soil, a Gram-stain-negative, aerobic, chitin-degrading bacterial strain, designated SJ-36T, was isolated from saline-alkaline soil sampled at Tumd Right Banner, Inner Mongolia, PR China. Strain SJ-36T grew at 4-40 °C (optimum, 30 °C), pH 5.0-10.0 (optimum, pH 7.0-8.0) and 0-6 % NaCl (optimum, 1.0 %). Oxidase and catalase activities were positive. A phylogenetic tree based on 16S rRNA gene sequences and the phylogenomic tree both showed that strain SJ-36T formed a tight clade with Lysobacter maris KMU-14T (sharing 97.6 % 16S rRNA gene similarity) and Lysobacter aestuarii S2-CT (97.8 %). The major polar lipids of strain SJ-36T were phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, two unidentified lipids and one unidentified phospholipid. The major fatty acids were iso-C15 : 0 (37.5 %), summed feature 9 (14.0 %; iso-C17 : 1ω9c and/or C16 : 0 10-methyl) and iso-C11 : 0 (10.6 %). Q-8 was the predominant ubiquinone. Its genomic DNA G+C content was 66.6 mol%. The average nucleotide identity values of strain SJ-36T to L. maris KMU-14T, L. aestuarii S2-CT and other type strains were 81.5, 79.1 and <79.0 %, respectively. The results of physiological, phenotypic and phylogenetic characterizations allowed the discrimination of strain SJ-36T from its phylogenetic relatives. Lysobacter alkalisoli sp. nov. is therefore proposed with strain SJ-36T (=CGMCC 1.16756T=KCTC 43039T) as the type strain.
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Affiliation(s)
- Lian Xu
- Inner Mongolia Key Laboratory of Environmental Pollution Prevention and Waste Resource Recycle & Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, PR China
| | - Xiao-Xian Huang
- Inner Mongolia Key Laboratory of Environmental Pollution Prevention and Waste Resource Recycle & Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, PR China
| | - De-Liang Fan
- Inner Mongolia Key Laboratory of Environmental Pollution Prevention and Waste Resource Recycle & Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, PR China
| | - Ji-Quan Sun
- Inner Mongolia Key Laboratory of Environmental Pollution Prevention and Waste Resource Recycle & Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, PR China
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Lysobacter prati sp. nov., isolated from a plateau meadow sample. Antonie van Leeuwenhoek 2020; 113:763-772. [PMID: 31980979 DOI: 10.1007/s10482-020-01386-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 01/09/2020] [Indexed: 10/25/2022]
Abstract
A novel proteobacterial strain designated SYSU H10001T was isolated from a soil sample collected from plateau meadow in Hongyuan county, Sichuan province, south-western China. The taxonomic position of the strain was investigated using a polyphasic approach. On the basis of 16S rRNA gene sequence similarities and phylogenetic analysis, strain SYSU H10001T was most closely related to Lysobacter soli KCTC 22011T (98.6%, sequence similarity) and Lysobacter panacisoli JCM 19212T (98.2%). The prediction result of secondary metabolites based on genome shown that the strain SYSU H10001T contained 3 clusters of bacteriocins, 1 cluster of non-ribosomal peptide synthetase, 1 cluster of type 1 polyketide synthase and 1 cluster of arylpolyene. In addition, the major isoprenoid quinone was Q-8 and the major fatty acids were identified as iso-C15:0, iso-C17:0 and Summed feature 9. The polar lipids contained diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, and three unidentified phospholipids. The genomic DNA G + C content of strain SYSU H10001T was 66.5% (genome). On the basis of phenotypic, genotypic and phylogenetic data, strain SYSU H10001T represents a novel species of the genus Lysobacter, for which the name Lysobacter prati sp. nov. is proposed. The type strain is SYSU H10001T (= KCTC 72062T = CGMCC 1.16662T).
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Chhetri G, Kim J, Kim H, Kim I, Kim MK, Seo T. Ilyomonas limi gen. nov., sp. nov., a new member of the family Chitinophagaceae isolated from mud. Antonie van Leeuwenhoek 2019; 112:1715-1723. [PMID: 31289977 DOI: 10.1007/s10482-019-01300-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 07/03/2019] [Indexed: 11/26/2022]
Abstract
A Gram-strain negative, aerobic, catalase and oxidase positive, non-motile, short rod-shaped bacterium, designated 17mud1-8T, was isolated from mud collected from Nowon-gu, Seoul, South Korea. The strain was found to be able to grow at 10-40 °C (optimum 28-30 °C), pH 5.0-8.0 (optimum 7.0), and in the absence of NaCl. The nearly full-length 16S rRNA gene of strain 17mud1-8T exhibits sequence similarity of 94.1% with that of Panacibacter ginsenosidivorans Gsoil 1550T, followed by 93.6% sequence similarity with Parafilimonas terrae DSM 28286T. Phylogenetic analysis indicated that strain 17mud1-8T belongs to the family Chitinophagaceae, sharing approximately 94.1-91.9% sequence similarity with members of closely related genera. The respiratory quinone was identified as MK-7. The predominant fatty acids were found to consist of iso-C15:0, iso-C17:1ω5c and iso-C15:1 G. The polar lipids were identified as phosphatidylethanolamine, an unidentified aminophospholipid, an unidentified glycolipid, ten unidentified aminolipids and seven unidentified lipids. The draft genome of 17mud1-8T has G+C content of 40.9 mol% and a 5.8 Mb chromosome. On the basis of the phenotypic and genotypic properties, and phylogenetic inference, strain 17mud1-8T was found to represent a novel genus in the family Chitinophagaceae, for which the name Ilyomonas limi gen. nov., sp. nov. is proposed, with the type strain 17mud1-8T(=KCTC 52874T = NBRC 112826T).
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Affiliation(s)
- Geeta Chhetri
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, South Korea
| | - Jiyoun Kim
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, South Korea
| | - Hyungdong Kim
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, South Korea
| | - Inhyup Kim
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, South Korea
| | - Myung Kyum Kim
- Department of Bio and Environmental Technology, College of Natural Science, Seoul Women's University, Seoul, 01797, South Korea
| | - Taegun Seo
- Department of Life Science, Dongguk University-Seoul, Goyang, 10326, South Korea.
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Chhetri G, Kim J, Kim H, Kim I, Seo T. Pontibacter oryzae sp. nov., a carotenoid-producing species isolated from a rice paddy field. Antonie van Leeuwenhoek 2019; 112:1705-1713. [DOI: 10.1007/s10482-019-01298-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 06/27/2019] [Indexed: 01/02/2023]
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