Combined characterization of a new member of Marivita cryptomonadis strain LZ-15-2 isolated from cultivable phycosphere microbiota of highly toxic HAB dinoflagellate Alexandrium catenella LZT09

文献类型： 外文期刊

第一作者： Zhou, Xin

作者： Zhou, Xin;Zhang, Xiao-Ling;Yang, Qiao;Zhang, Xiao-Ai;Jiang, Zhi-Wei;Yang, Xi;Yang, Qiao

作者机构：

关键词： Phycosphere microbiota; Alexandrium catenella  LZT09  Marine HAB dinoflagellates; Paralytic shellfish poisoning; toxins; Algae– bacteria interactions

期刊名称：BRAZILIAN JOURNAL OF MICROBIOLOGY （ 影响因子：2.428； 五年影响因子：2.719 ）

ISSN： 1517-8382

年卷期： 2021 年 52 卷 2 期

页码：

收录情况： SCI

摘要： During our conveying the microbial structures of phycosphere microbiota (PM) derived from diverse marine harmful algal bloom (HAB) dinoflagellates, a new rod-sharped, white-colored cultivable bacterial strain, designated as LZ-15-2, was isolated from the PM of highly toxic Alexandrium catenella LZT09. Phylogenetic analysis of 16S rRNA gene sequence indicated that strain LZ-15-2 belonged to the genus Marivita within the family Rhodobacteraceae, and demonstrated the highest gene similarity of 99.2% to M. cryptomonadis CL-SK44(T), and less than 98.65% with other type strains of Marivita. Phylogenomic calculations on average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between the new isolate and M. cryptomonadis CL-SK44(T) were 99.86% and 99.88%, respectively. Genomic comparison of strain LZ-15-2 with available genomes of Marivita species further verified its taxonomic position within the genus of Marivita. Moreover, comparative genomics analysis showed a proximal similarity of strain LZ-15-2 with M. cryptomonadis CL-SK44(T), and it also revealed an open pan-genome status based on constructed gene accumulation curves among Marivita members with 9,361 and 1,712 genes for the pan- and core-genome analysis, respectively. Based on combined polyphasic taxonomic characteristics, strain LZ-15-2 represents a new member of M. cryptomonadis, and proposed as a potential candidate for further exploration of the detailed mechanisms governing the dynamic cross-kingdom algae-bacteria interactions (ABI) between PM and their algal host LZT09.

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