The composition, function and assembly mechanism of epiphytic microbial communities on Gracilariopsis lemaneiformis
文献类型： 外文期刊
作者： Xie, Xinfei 1 ; He, Zhili 3 ; Hu, Xiaojuan 4 ; Wang, Qing 2 ; Yang, Yufeng 2 ;
作者机构： 1.Huizhou Univ, Sch Life Sci, Huizhou 516007, Peoples R China
2.Jinan Univ, Inst Hydrobiol, Key Lab Philosophy & Social Sci Guangdong Prov, Guangzhou 510632, Peoples R China
3.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519080, Peoples R China
4.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploita, Guangdong Prov Key Lab Fishery Ecol & Environm,Min, Guangzhou 510300, Peoples R China
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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