Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)

doi:10.3390/microorganisms11092364

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	Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)
	Liu,Jiating; Xu,Haiyan; Wang,Zhaochun; Liu,Jian; Gong,Xun
	2023
发表期刊	MICROORGANISMS
ISSN	2076-2607
卷号	11 期号:9 页码:2364
摘要	As a gymnosperm group, cycads are known for their ancient origin and specialized coralloid root, which can be used as an ideal system to explore the interaction between host and associated microorganisms. Previous studies have revealed that some nitrogen-fixing cyanobacteria contribute greatly to the composition of the endophytic microorganisms in cycad coralloid roots. However, the roles of host and environment in shaping the composition of endophytic bacteria during the recruitment process remain unclear. Here, we determined the diversity, composition, and function prediction of endophytic bacteria from the coralloid roots of a widely cultivated cycad, Cycas revoluta Thunb. Using next-generation sequencing techniques, we comprehensively investigated the diversity and community structure of the bacteria in coralloid roots and bulk soils sampled from 11 sites in China, aiming to explore the variations in core endophytic bacteria and to predict their potential functions. We found a higher microbe diversity in bulk soils than in coralloid roots. Meanwhile, there was no significant difference in the diversity and composition of endophytic bacteria across different localities, and the same result was found after removing cyanobacteria. Desmonostoc was the most dominant in coralloid roots, followed by Nostoc, yet these two cyanobacteria were not shared by all samples. Rhodococcus, Edaphobacter, Niastella, Nordella, SH-PL14, and Virgisporangium were defined as the core microorganisms in coralloid roots. A function prediction analysis revealed that endophytic bacteria majorly participated in the plant uptake of phosphorus and metal ions and in disease resistance. These results indicate that the community composition of the bacteria in coralloid roots is affected by both the host and environment, in which the host is more decisive. Despite the very small proportion of core microbes, their interactions are significant and likely contribute to functions related to host survival. Our study contributes to an understanding of microbial diversity and composition in cycads, and it expands the knowledge on the association between hosts and symbiotic microbes.
关键词	coralloid root endophyte cyanobacteria core microbes SP-NOV. APOGEOTROPIC ROOTS SYMBIOTIC CYANOBACTERIA HOST SELECTION GEN-NOV. PLANT DIVERSITY COMMUNITIES EVOLUTION RHIZOSPHERE
DOI	10.3390/microorganisms11092364
WOS记录号	WOS:001076704100001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75036
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Liu,Jiating,Xu,Haiyan,Wang,Zhaochun,et al. Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)[J]. MICROORGANISMS,2023,11(9):2364.
APA	Liu,Jiating,Xu,Haiyan,Wang,Zhaochun,Liu,Jian,&Gong,Xun.(2023).Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae).MICROORGANISMS,11(9),2364.
MLA	Liu,Jiating,et al."Core Endophytic Bacteria and Their Roles in the Coralloid Roots of Cultivated Cycas revoluta (Cycadaceae)".MICROORGANISMS 11.9(2023):2364.

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