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Insights into the mechanisms of microbiome and metabolome changes mediated by understory interplanting mode in Polygonatum sibiricum

文献类型： 外文期刊

作者： Wang, Yue 1 ; Zhang, Jin 2 ; Sun, Jiabo 1 ; Li, Guoqing 3 ; Wang, Qian 4 ; Zhao, Yanxia 1 ; Ma, Changjian 1 ; Han, Jinlong 1 ;

作者机构： 1.Shandong Acad Agr Sci, Jinan, Peoples R China

2.Taian Taishan Forestry Res Inst, Tai An, Peoples R China

3.Taian Acad Agr Sci, Tai An, Peoples R China

4.Shandong Taishang Huangjing Biotechnol Co Ltd, Tai An, Peoples R China

关键词： Polygonatum sibiricum; understory interplanting mode; metabolome; microbiome; endophyte; rhizosphere soil

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.2； 五年影响因子：6.2 ）

ISSN：

年卷期： 2023 年 17 卷

页码：

收录情况： SCI

摘要： Background: Polygonatum sibiricum is an understory economic plant, and its dried rhizome is a traditional Chinese medicine. The purpose of this study was to connect the quality improvement of the understory plant P. sibiricum with specific microorganisms.Methods: Amplicon and metabolome sequencing were conducted for P. sibiricum interplanted under three types of trees and in the field, and the relationship between the microbiome and secondary metabolism was explored.Results: Principal component analysis (PCA) divided field cultivated and understory interplanted groups into two classes. A total of 95 different metabolites were found, with four expression patterns. The alpha diversity of rhizosphere bacteria and endosphere fungi in the understory interplanted group was significantly higher than that in the farmland cultivated group. There were 276 different rhizosphere microorganism genera among the four groups; however, only 33 different endosphere genera were observed, indicating that endophytic microbial diversity was relatively stable within the P. sibiricum rhizome, especially for endosphere bacteria. Cointertia analysis (CoIA) suggested that the metabolite changes in P. sibiricum induced by interplanting under different trees were more strongly affected by rhizosphere microorganisms than by endosphere microorganisms. In addition, the interactions between rhizosphere microorganisms and metabolites in the farmland group were weakened compared with those in the underplanted groups. Canonical correspondence analysis (CCA) showed that Aspergillus and Ellin6067 had the greatest influence on the metabolites. Myrmecridium, as a shared microbe in the rhizosphere and endosphere, had interaction effects with the largest number of microbes.Conclusion: This study revealed the interactions between the microbes and metabolites in P. sibiricum and systematically explored the mechanism underlying their correlation, which was mediated by the understory interplanting mode. This study provides feasible strategies for improving the medicinal value of P. sibiricum by regulating microorganisms.

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