International journal of systematic and evolutionary microbiology最新文献

{"title":"<i>Blastobotrys xijiuensis</i> sp. nov., a new ascomycetous yeast species from the Daqu-making environment in Guizhou Province, China.","authors":"Zhang Wen, Yu-Hua Wei, Li Chen, Jie Yuan, Shang-Jie Yao, Zhong-Wei Lin, Lin Xu, Pei-Jie Han, Feng Hu, Hai-Yan Zhu, Feng-Yan Bai","doi":"10.1099/ijsem.0.007309","DOIUrl":"https://doi.org/10.1099/ijsem.0.007309","url":null,"abstract":"<p><p>Six yeast strains were isolated from residual powder on brooms used in the production of high-temperature Daqu collected in Zunyi City, Guizhou Province, China. Phylogenetic analyses based on the sequences of the internal transcribed spacer (ITS) region and the D1/D2 domains of the large subunit rRNA gene indicated that these strains represent a novel species of the genus <i>Blastobotrys</i>. The strains differ from their closest relatives, <i>Blastobotrys bombycis</i> and <i>Blastobotrys aristatus</i>, by 5.0 and 5.4% mismatches in the D1/D2 domains, respectively, and by 10.8 and 8.0% mismatches in the ITS region, respectively. Physiologically, the new species is distinguished from the two closest relatives by its ability to assimilate ethanol and inability to ferment trehalose. Therefore, we propose the name <i>Blastobotrys xijiuensis</i> sp. nov. (holotype: strain CGMCC 2.9300) for the new species.</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149109469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Description of <i>Halodurantibacterium rhizosphaerae</i> sp. nov., a novel bacterium isolated from the rhizosphere, and reclassification of '<i>Plastorhodobacter daqingensis</i>' as <i>Halodurantibacterium daqingense</i> sp. nov.","authors":"Hong-Fei Wang, Xiao-Xiao Li, Ru-Bing Chen, Rui Gao, Li-Feng Miao, Linda Fenske, Min Xiao, Jie-Qiong Song, Chang-Ping Li, Qiu-Li Li, Wen-Jun Li","doi":"10.1099/ijsem.0.007316","DOIUrl":"https://doi.org/10.1099/ijsem.0.007316","url":null,"abstract":"<p><p>A Gram-stain-negative, non-motile, spherical bacterium, designated strain LNNU 3342^T, was isolated from the rhizosphere soil of halophyte <i>Suaeda aralocaspica</i> collected in Xinjiang, PR China. Strain LNNU 3342^T revealed the highest 16S rRNA gene sequence similarity with '<i>Plastorhodobacter daqingensis</i>' CGMCC 1.12750^T (96.51%), followed by <i>Pararhodobacter aggregans</i> DSM 18938^T (96.25%) and less than 95.64% with the type strains of other recognized species. Phylogenetic analyses based on 16S rRNA gene and genome sequences showed that strain LNNU 3342^T formed a clade with <i>Halodurantibacterium flavum</i> CGMCC 1.12756^T and '<i>Plastorhodobacter daqingensis</i>' CGMCC 1.12750^T. The amino acid identity and percentage of conserved proteins (POCP) analysis indicated that strain LNNU 3342^T and the type strains of genera <i>Halodurantibacterium</i> and '<i>Plastorhodobacter</i>' should be recognized as a single genus. The genome size of strain LNNU 3342^T was 3,779,330 bp with genomic DNA G+C content of 64.6 mol%. Strain LNNU 3342^T grew at 10-45 °C (optimum, 30-35 °C), at pH 4.0-9.0 (optimum, pH 7.0-8.0) and in the presence of 0-8% (wt/v) NaCl (optimum, 1-3%). Strain LNNU 3342^T contained Q-10 as the major respiratory quinone. The major cellular fatty acids (> 5.0 %) were summed feature 8 (C_18 : 1 ω7c or C_18 : 1 ω6c) (79.2%) and C_18 : 1 ω7c 11-methyl (6.5%). The polar lipids included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, hydroxy-phosphatidylethanolamine, one unidentified phospholipid and two unidentified lipids. Based on the physiological, biochemical and phylogenetic results, strain LNNU 3342^T represents a novel species of the genus <i>Halodurantibacterium</i>, for which the name <i>Halodurantibacterium rhizosphaerae</i> sp. nov. is proposed. The type strain is LNNU 3342^T (=KCTC 62250^T =CGMCC 1.17106^T). Additionally, we propose the reclassification of '<i>Plastorhodobacter daqingensis'</i> as <i>Halodurantibacterium daqingense</i> sp. nov.</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149136495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Description of 'Desulfobacterium corrodens' strain IS4 as <i>Desulfosediminibacter corrodens</i> gen. nov. sp. nov. and reclassification of <i>Desulfopila inferna</i> as <i>Desulfosediminibacter infernus</i> comb. nov.","authors":"Stefan Dyksma, Maximilian von Frieling, Dominik Stickel, Jacqueline Wolf, Meina Neumann-Schaal, Cathrin Spröer, Boyke Bunk, Mathias Müsken, Michael Pester","doi":"10.1099/ijsem.0.007342","DOIUrl":"https://doi.org/10.1099/ijsem.0.007342","url":null,"abstract":"<p><p>Sulphate-reducing bacteria of the families <i>Desulfobulbaceae</i> and <i>Desulfocapsaceae</i> are ubiquitously distributed and abundant in marine sediments. The present study characterizes strain IS4^T, a sulphate reducer that was formerly isolated from a coastal sediment. Phylogenetic analyses based on 16S rRNA gene and marker protein sequences identified <i>Desulfopila inferna</i> JS_SRB250Lac^T as the closest relative of strain IS4^T, which is, however, polyphyletic with the type species <i>Desulfopila aestuarii</i> MSL86^T. Both phylogenetic analyses and whole-genome comparisons suggest that strains IS4^T and JS_SRB250Lac^T represent different species of a new genus within the family <i>Desulfocapsaceae</i>. Strains IS4^T and JS_SRB250Lac^T further differ from <i>D. aestuarii</i> MSL86^T by their capacity to grow autotrophically, the presence of cyclic fatty acids (C_17 : 0 cyclo <i>ω</i>7c) and their polar lipids that can include phosphatidylcholine, lysophosphatidylcholine, phosphatidylglycerol and phosphatidylethanolamine, while phosphatidylserine was absent. During lithoautotrophic growth of strain IS4^T with metallic iron as an electron donor, molecular hydrogen accumulated to a higher level than it was produced abiotically, suggesting that corrosion potential is a distinguishing feature between strains IS4^T and JS_SRB250Lac^T. On the basis of phenotypic, phylogenetic and genomic characteristics, we propose the novel species and genus <i>Desulfosediminibacter corrodens</i> gen. nov. sp. nov. The type strain is IS4^T (=DSM 15630^T=JCM 39320^T). In addition, we suggest the reclassification of <i>D. inferna</i> as <i>Desulfosediminibacter infernus</i> comb. nov.</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149297460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Mollicutes: minutes of the closed meeting, 6 July 2026, Kraków, Poland.","authors":"Gail E Gasparich, Mitchell F Balish","doi":"10.1099/ijsem.0.007306","DOIUrl":"10.1099/ijsem.0.007306","url":null,"abstract":"<p><p>This report documents the International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Mollicutes minutes for the meeting held on 6 July 2026, Kraków, Poland, at the 26^th International Organization for Mycoplasmology Congress.</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149109608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Aeromicrobium changchenzhani</i> sp. nov. and <i>Streptomyces changchenzhani</i> sp. nov., two novel actinomycetes isolated from soils of Ardley Island, Fildes Peninsula, Antarctica.","authors":"Wei Han, Yu Du, Shi-Jie Bai, Yin-Xin Zeng","doi":"10.1099/ijsem.0.007313","DOIUrl":"https://doi.org/10.1099/ijsem.0.007313","url":null,"abstract":"<p><p>Two Gram-stain-positive, non-motile actinomycetes, designated Or2-10a^T and 21So2-11^T, were isolated from ornithogenic and pristine soils collected on Ardley Island, Fildes Peninsula, King George Island, maritime Antarctica. 16S rRNA gene sequence analysis revealed that strains Or2-10a^T and 21So2-11^T showed the highest similarities to <i>Aeromicrobium panaciterrae</i> Gsoil 161^T (98.02%) and <i>Streptomyces drozdowiczii</i> NRRL B-24297^T (97.85%), respectively. Phylogenetic analyses based on 16S rRNA gene sequences confirmed the close relationships of these strains. Genomic analyses further supported the novel taxonomic status of these two species based on average nucleotide identity and digital DNA-DNA hybridization. Strains Or2-10a^T and 21So2-11^T contained MK-9 and MK-9 (H₈) as the predominant menaquinone, respectively. High abundances of C_18 : 1 <i> ω</i>9<i>c</i> and C_16 : 0 were detected in Or2-10a^T, whereas iso-C_16 : 0, anteiso-C_15 : 0 and iso-C_16 : 1 h were dominant in 21So2-11^T. The cell-wall peptidoglycan of both Or2-10a^T and 21So2-11^T contained ʟʟ-diaminopimelic acid. The whole-cell sugars of the two strains contained ribose and strain Or2-10a^T contained additional glucose. Strain Or2-10a^T contained diphosphatidylglycerol (DPG), phosphatidylglycerol, phosphatidylinositol (PI), an unidentified phospholipid and an unidentified phosphoglycolipid as major polar lipids, whereas strain 21So2-11^T contained DPG, phosphatidylethanolamine, PI and phosphatidylinositol mannoside as major polar lipids. On the basis of polyphasic taxonomy analysis, strains Or2-10a^T and 21So2-11^T are concluded to represent two novel species of the genera <i>Aeromicrobium</i> and <i>Streptomyces</i>, respectively. The names <i>Aeromicrobium changchenzhani</i> sp. nov. (type strain Or2-10a^T=CCTCC AA 2025019^T = DSM 120837^T=KCTC 59632^T) and <i>Streptomyces changchenzhani</i> sp. nov. (type strain 21So2-11^T = CCTCC AA 2024063^T = DSM 121692^T=JCM 38519^T) are proposed.</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149109442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Hydrogenimesophilus fermentans</i> gen. nov., sp. nov., a novel anaerobic hydrogen-producing bacterium isolated from lacustrine sediment.","authors":"Khaled Fadhlaoui, Ayité Adama Hondegla, Gaëlle Marchal, Eric Viollier, Neha Mehta, Jean-Sébastien Guez, Mailysia Scheepers, Damien Courtine, Corinne Biderre-Petit","doi":"10.1099/ijsem.0.007304","DOIUrl":"https://doi.org/10.1099/ijsem.0.007304","url":null,"abstract":"<p><p>Anaerobic lake sediments harbour fermentative micro-organisms that contribute to organic-matter degradation and dihydrogen (H₂) turnover. Strain PP1C4^T was isolated from sediment of Lake Pavin, a permanently stratified meromictic lake characterized by active anaerobic microbial processes, including methanogenesis and characterized using a polyphasic taxonomic approach. Cells were strictly anaerobic, Gram-stain-negative, motile rods. Growth occurred at 19-37 °C (optimum, 30 °C), pH 7.0-9.0 (optimum, pH 7.0) and NaCl concentrations of 0-20 g l⁻¹ (optimum, 1 g l^-1). Glucose fermentation produced propionate and butyrate as major organic end-products together with CO_₂ and H₂. Phylogenetic analysis placed PP1C4^T within the family <i>Oscillospiraceae</i>, with the highest 16S rRNA gene sequence similarity to '<i>Marasmitruncus massiliensis</i>' Marseille-P3646 (95.2%). The genome was ∼3.4 Mb with a DNA G+C content of 45.6 mol%. Maximum blast-based average nucleotide identity and average amino acid identity values between PP1C4^T and the compared taxa were 71.53 and 69.30%, respectively, and <i>in silico</i> DNA-DNA hybridization values ranged from 18.0 to 24.3%. Based on the combined phylogenetic, genomic, phenotypic and chemotaxonomic evidence, strain PP1C4ᵀ represents a novel genus and species within the family <i>Oscillospiraceae</i>, for which the name <i>Hydrogenimesophilus fermentans</i> gen. nov., sp. nov. is proposed. The type strain is PP1C4^T (=DSM 118145^T=CIP 112512ᵀ).</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149109582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Vreelandella aydingkolensis</i> sp. nov., a polyhydroxybutyrate-producing halophilic bacterium isolated from Aydingkol Lake, China.","authors":"Manuel Tianchen Tang, Ge Zhang, Guo-Qiang Chen","doi":"10.1099/ijsem.0.007326","DOIUrl":"https://doi.org/10.1099/ijsem.0.007326","url":null,"abstract":"<p><p>A Gram-negative, aerobic, halophilic bacterium, designated as strain TD01^T, was isolated from an environmental sample collected from Aydingkol Lake, a saline lake in Xinjiang, China. Cells were rod-shaped and formed light yellow, circular, smooth and glossy colonies on Luria-Bertani agar supplemented with 60 g l^-1 NaCl. Strain TD01^T grew at 20-41 °C (optimum 30 °C), pH 5.0-10.0 (optimum 7.0-8.0) and in the presence of 2-20% (w/v) NaCl [optimum 8-11% (w/v)]. The strain was catalase- and oxidase-positive, reduced nitrate and did not grow anaerobically in the absence or presence of nitrate, nitrite or fumarate as an exogenous electron acceptor. The strain was capable of accumulating intracellular polyhydroxybutyrate. The predominant respiratory quinone was ubiquinone-9. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain TD01^T belonged to the genus <i>Vreelandella</i> and was most closely related to <i>Vreelandella zhaodongensis</i> (99.65%), <i>Vreelandella alkaliphila</i> (98.94%) and <i>Vreelandella venusta</i> (98.73%). Analysis of the previously published complete genome sequence showed a genome size of 4.13 Mb with a DNA G+C content of 52.71 mol%. Average nucleotide identity and digital DNA-DNA hybridization values between strain TD01^T and its closest relatives were below the accepted thresholds for species delineation. Based on the results of polyphasic taxonomic analyses, we propose that strain TD01^T be classified as the type strain of a novel species named <i>Vreelandella aydingkolensis</i> sp. nov. Strain TD01^T has been deposited in the China General Microbiological Culture Collection Center (CGMCC), Beijing, China, under the collection number CGMCC 4353^T, in the Spanish Type Culture Collection (CECT), Valencia, Spain, under the collection number CECT 31432^T, and in the American Type Culture Collection (ATCC), Manassas, VA, USA, under the collection number ATCC TSD-628ᵀ.</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149238331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Latilactobacillus parafuchuensis</i> sp. nov., isolated from marinated rainbow trout.","authors":"Julia A Manninen, Elina Jääskeläinen, Per Johansson, Johanna Björkroth","doi":"10.1099/ijsem.0.007322","DOIUrl":"https://doi.org/10.1099/ijsem.0.007322","url":null,"abstract":"<p><p>While studying the spoilage microbiome of commercially manufactured marinated rainbow trout (<i>Oncorhynchus mykiss</i>), two strains, Mkasi1-1^T and Mkahm2-6, that could not be identified as any known species of the family <i>Lactobacillaceae</i> by MALDI Biotyper MSP Identification Standard Method 1.1 analysis were isolated. In phylogenetic analyses, the two strains were positioned closest to <i>Latilactobacillus</i> (<i>L</i>.) <i>fuchuensis</i>. Genetically, Mkasi1-1^T and Mkahm2-6 were highly similar to each other, having 100% average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) identities. The ANI and dDDH pair values of both Mkasi1-1^T and Mkahm2-6 with the <i>L. fuchuensis</i> type strain DSM14340^T were 94.9 and 59.8%, respectively, suggesting that they represent a novel species distinct from <i>L. fuchuensis</i>. Phenotypic properties of Mkasi1-1^T and Mkahm2-6 were quite similar to those of <i>L. fuchuensis</i> type strain DSM14340^T, differing only in the utilization of fewer carbon sources. Due to the close relation of Mkasi1-1^T and Mkahm2-6 to <i>L. fuchuensis</i>, we propose the name <i>Latilactobacillus parafuchuensis</i> sp. nov. for this novel species. The type strain is Mkasi1-1^T (=LMG 34323^T=DSM 121188^T), and a second strain is Mkahm2-6 (=LMG 34324=DSM 121189).</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149224092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Flavobacterium xizangense</i> sp. nov. and <i>Flavobacterium erigeronis</i> sp. nov. isolated from the rhizosphere soil of <i>Erigeron canadensis</i>, Tibet, China.","authors":"Yijun Li, Fu Yang, Linmin Zhang, Shanjun Wei, Xiaoxia Zhang, Haisheng Wang","doi":"10.1099/ijsem.0.007275","DOIUrl":"https://doi.org/10.1099/ijsem.0.007275","url":null,"abstract":"<p><p>Two yellow-pigmented bacterial strains, designated 3-210^T and 3-218^T, were isolated from the rhizosphere soil of <i>Erigeron canadensis</i> collected from Lhalu Wetland, which is located in the northwest corner of Lhasa, Tibet Autonomous Region, China. The two strains were characterized as Gram-stain-negative, rod-shaped bacteria and both exhibited positive reactions for oxidase and catalase. Based on 16S rRNA gene sequence analysis, the strains were identified as members of the genus <i>Flavobacterium</i>. Digital DNA-DNA hybridization and average nucleotide identity analyses among strains 3-210^T, 3-218^T and their references in the genus <i>Flavobacterium</i> confirmed that they represent two novel species in the genus <i>Flavobacterium</i>. The strains contained MK-6 as the sole respiratory quinone. Common major fatty acids were <i>iso</i>-C_15:0, C_16:0, <i>iso</i>-C_15:0 3-OH, <i>iso</i>-C_17:0 3-OH, C_15:1 ω5c and Summed features 3 (C_16:1 <i>ω7</i>c/C_16:1 ω6c). The polar lipid profiles of strains 3-210^T and 3-218^T were nearly identical, consisting of phosphatidylethanolamine, amino lipid, glycolipid and two unidentified lipids. Based on the result of the polyphasic characterization, the following names are proposed: <i>Flavobacterium xizangense</i> sp. nov., with strain 3-210^T as the type strain (= ACCC 63738^T = CGMCC 30572^T=KCTC 102490^T) and <i>Flavobacterium erigeronis</i> sp. nov., with strain 3-218^T as the type strain (= ACCC 63282^T = CGMCC 31149^T=KCTC 102399^T).</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149127459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Vibrio coralinecrosis</i> sp. nov., a coral pathogen isolated from the stony coral <i>Galaxea fascicularis</i> in the South China Sea.","authors":"Weiquan Wang, Songbiao Shi, Li Jiang, Zhipeng Xiao, Yan Wang, Xinpeng Tian, Kaihao Tang, Xiaoxue Wang","doi":"10.1099/ijsem.0.007318","DOIUrl":"https://doi.org/10.1099/ijsem.0.007318","url":null,"abstract":"<p><p>A Gram-stain-negative, facultatively anaerobic, motile and rod-shaped bacterium, designated as strain SCSIO 43001^T, was isolated from the gastric cavity of the stony coral <i>Galaxea fascicularis</i> in the South China Sea. Previous studies identified this strain as a temperature-dependent coral pathogen, and further ecological analysis revealed that this species is also distributed among other marine invertebrates, including the Pacific oyster <i>Magallana gigas</i>. Strain SCSIO 43001^T grew at 10-40 °C (optimum, 28 °C), pH 6.0-10.0 (optimum, 7.0) and in 0.5-10% (w/v) NaCl (optimum, 3-4%). Phylogenetic analysis based on 16S rRNA gene sequences showed that strain SCSIO 43001^T belongs to the genus <i>Vibrio</i>, sharing the highest similarities with <i>Vibrio japonicus</i> LMG 29636^T (98.2%) and <i>Vibrio xuii</i> LMG 21346^T (97.9%). However, phylogenomic comparisons showed that the average nucleotide identity and digital DNA-DNA hybridization values between strain SCSIO 43001^T and its closest relatives were below 86.6 and 31.1%, respectively, well below the species-delimitation thresholds. The major cellular fatty acids were summed feature 3 (C_16 : 1 <i> ω</i>7<i>c</i>/C_16 : 1 <i> ω</i>6<i>c</i>), summed feature 8 (C_{18  :  1} <i>ω</i>6<i>c</i> or C_{18  :  1} <i>ω</i>7<i>c</i>) and C_16 : 0. The DNA G+C content was 44.5 mol%. Based on combined phenotypic, chemotaxonomic, phylogenetic and phylogenomic polyphasic evidence, strain SCSIO 43001^T represents a novel species within the genus <i>Vibrio</i>, for which the name <i>Vibrio coralinecrosis</i> sp. nov. is proposed with the type strain SCSIO 43001^T (=MCCC 1K09368^T=KCTC 18156^T).</p>","PeriodicalId":14390,"journal":{"name":"International journal of systematic and evolutionary microbiology","volume":"76 10","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}