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Polycladospora coralii gen. nov., sp. nov., a novel member of the family Thermoactinomycetaceae isolated from stony coral in the South China Sea

文献类型： 外文期刊

作者： Mo, Kunlian 1 ; Huang, Huiqin 1 ; Ye, Lin 1 ; Wu, Qingjuan 2 ; Hu, Yong hua 1 ;

作者机构： 1.CATAS, Zhanjiang Expt Stn, Zhanjiang 524013, Peoples R China

2.Hainan Inst Trop Agr Resources, Inst Trop Biosci & Biotechnol, CATAS, Haikou 571101, Peoples R China

3.Hainan Inst Trop Agr Resources, Key Lab Biol & Genet Resources Trop Crops Hainan P, Haikou 571101, Peoples R China

4.Hainan Prov Key Lab Funct Components Res & Utiliza, Haikou 571101, Peoples R China

5.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Biol & Biotechnol, Qingdao, Shandong, Peoples R China

关键词： 16S rRNA gene; Polycladospora coralii gen. nov.; sp. nov; polyphasic taxonomy

期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.8； 五年影响因子：2.6 ）

ISSN： 1466-5026

年卷期： 2023 年 73 卷 10 期

页码：

收录情况： SCI

摘要： Two novel filamentous bacteria, designated as IB182353T and IB182357, were isolated from stony coral of the South China Sea. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strains IB182353T and IB182357 were closely related to Hazenella coriacea DSM 45707T (with 93.4 and 93.5% similarity, respectively). The average nucleotide identity, average amino acid identity and digital DNA-DNA hybridization results showed that the pairwise similarities between isolate IB182353T and the other recognized Thermoactinomycetaceae species were less than 68.9, 60.5 and 21.1 %, respectively. Both strains produced aerial and substrate mycelia, grew optimally at 25-30 degrees C, pH 8.0-9.0 and with 2-3 % (w/v) NaCl. The cell- wall peptidoglycan type was meso- DAP and the whole- cell hydrolysates contained ribose. The polar lipids consisted of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, one unidentified aminophospholipid and three unidentified phospholipids. The genomic DNA G+C content was 39.5 mol%. Strain IB182353T was distinguishable from its related type strains by the contents of two fatty acids, iso- C15: 0 and iso- C17: 1 omega 10c. Based on polyphasic taxonomic characterization, we propose that strains IB182353T and IB182357 represent a novel genus and species within the family Thermoactinomycetaceae, for which the name Polycladospora coralii gen. nov. sp. nov. is proposed. The type strain is IB182353T (=MCCC 1K04631T=JCM 34206T).

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