The composition, function and assembly mechanism of epiphytic microbial communities on Gracilariopsis lemaneiformis

文献类型： 外文期刊

第一作者： Xie, Xinfei

作者： Xie, Xinfei;Xie, Xinfei;Wang, Qing;Yang, Yufeng;He, Zhili;Yang, Yufeng;Hu, Xiaojuan

作者机构：

关键词： Gracilariopsis lemaneiformis; Epiphytic microbial community; Community composition and function; Community assembly; High -throughput technology

期刊名称：JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY （ 影响因子：2.0； 五年影响因子：2.4 ）

ISSN： 0022-0981

年卷期： 2023 年 564 卷

页码：

收录情况： SCI

摘要： Gracilariopsis lemaneiformis is effective for bioremediation and important ecologically and economically in coastal ecosystems. However, little is known about the epiphytic microbes on it. We used the 16S rRNA gene and ITS amplicon sequencing, and a comprehensive functional gene array (GeoChip 5.0) to analyze both the epiphytic microbial communities on G. lemaneiformis and the free-living microbial communities in the surrounding seawater. The dominant epiphytic taxa, Aquimarina, Leucothrix, Formosa and Croceitalea, are associated with the seaweed and the degradation of algal polysaccharides. Genes enriched in the epiphytic community contribute to the seaweed surface life stress responses, quorum sensing, formation and stabilization of biofilms and antifouling. Moreover, homogeneous selection was the predominant deterministic process of epiphytic microbial community assembly. Our study provides new insights into understanding the G. lemaneiformis epiphytic communities and proposes guidance for future studies of other microbe-seaweed interactions in order to uncover the ecological mechanisms of epiphytes.

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