Integrated analysis reveals an association between the rhizosphere microbiome and root rot of arecanut palm  

作　　者：Hong LI Xiang MA Yanqiong TANG Chengliang YAN Xinwen HU Xi HUANG Min LIN Zhu LIU 

机构地区：[1]Key Laboratory of Tropical Biological Resources of Ministry of Education,School of Life and Pharmaceutical Sciences,Hainan University,Haikou 570228(China) [2]Biotechnology Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081(China)

出　　处：《Pedosphere》2021年第5期725-735,共11页土壤圈（英文版）

基　　金：supported by the Hainan Major Research Project for Science and Technology;China(No.zdkj201817);partly supported by the National Transgenic Major Project of China(No.2019ZX08010-004);the National Natural Science Foundation of China(Nos.31560021,31772887,and 31860676);the Hainan Natural Science Foundation,China(No.319QN161);the Priming Scientific Research Foundation of Hainan University;China(No.KYQD(ZR)1929)。

摘　　要：The rhizosphere microbial community is crucial to plant health.Many studies have explored the association between the rhizosphere microbiome and plant disease.However,few studies have focused on root rot in arecanut palm,a disease causing devastating effects and thus resulting in economic losses that considerably affect the development of the arecanut industry.Here,rhizosphere samples were collected from both healthy arecanut palm plants and root-rotted arecanut palm plants,and the microbial communities were analyzed using high-throughput sequencing.The root-rotted samples exhibited distinct microbial community richness,diversity,and composition compared with the healthy samples,which was associated with p H according to the Mantel test.Identified potential plant pathogens,including Proteobacteria,Bacteroidetes,Chytridiomycota,and Mortierellomycota,were significantly enriched in the root-rotted samples.In contrast,potentially beneficial plant microbes,such as Acidobacteria and Gemmatimonadetes,were significantly depleted in the root-rotted samples.Co-occurrence networks were constructed to further identify microbial relationships in the root-rotted samples.These findings revealed ecological imbalance among beneficial bacteria in the root-rotted samples.The present study therefore provides an integrated view of the association between the microbial community and root rot in arecanut palm.

关 键 词：microbial community co-occurrence network ecological imbalance soil physicochemical characteristics high-throughput sequencing 

分 类 号：S763.7[农业科学—森林保护学]