鼠尾藻生殖托不同生长阶段的附生细菌多样性研究OA北大核心CSTPCD

In order to find out whether the bacterial community structure of epiphytic bacteria in the re-productive tissues of dioecious macroalgae—Sargassum thunbergii changes correspondingly with the growth of reproductive tissues,we used high-throughput sequencing technology to study the diversity of epiphytic bacteria in different growth stages of receptacle Sargassum thunbergii,and the relevant re-sults in this study are as follows:Proteobacteria and Bacteroidetes were the dominant bacterial phyla,which were similar to other epiphytic bacteria of macroalgae;Alpha diversity of the bacterial community was more uniform in the early stage of the growth of the receptacle of Sargassum thunbergii,while beta diversity of the bacterial community structure in the receptacle of Sargassum thunbergii was significant-ly different between different growth stages,and gender may be an important factor affecting bacterial community structure.LEfSe software analysis showed that the receptacle of Sargassum thunbergii con-tained 11,15 and 4 biomarkers that may be associated with its own development in the early,mid and mature growth stages of epiphytic bacteria,respectively.This study preliminarily revealed the diversity and complexity of epiphytic bacteria in receptacles of Sargassum thunbergii,,and provided basic data for the detailed characterization of the network of related interactions between Sargassum thunbergii and its epiphyticmicrobes in the future,as well as new insights for the protection and utilization of Sar-gassum thunbergii.