AMF colonization affects allelopathic effects of Zea mays L. root exudates and community structure of rhizosphere bacteria

Junqing Ma; Junqing Ma; Junqing Ma; Yi Xie; Yisen Yang; Yisen Yang; Changliang Jing; Xiangwei You; Juan Yang; Juan Yang; Chenyu Sun; Chenyu Sun; Shengfeng Qin; Shengfeng Qin; Jianhua Chen; Jianhua Chen; Kexin Cao; Kexin Cao; Jinghua Huang; Jinghua Huang; Yiqiang Li

doi:10.3389/fpls.2022.1050104

Frontiers in Plant Science (Nov 2022)

AMF colonization affects allelopathic effects of Zea mays L. root exudates and community structure of rhizosphere bacteria

Junqing Ma,
Junqing Ma,
Junqing Ma,
Yi Xie,
Yisen Yang,
Yisen Yang,
Changliang Jing,
Xiangwei You,
Juan Yang,
Juan Yang,
Chenyu Sun,
Chenyu Sun,
Shengfeng Qin,
Shengfeng Qin,
Jianhua Chen,
Jianhua Chen,
Kexin Cao,
Kexin Cao,
Jinghua Huang,
Jinghua Huang,
Yiqiang Li

Affiliations

Junqing Ma: Guangxi Key Laboratory of Agro-environment and Agric-products safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
Junqing Ma: National Demonstration Center for Experimental Plant Science Education, Guangxi University, Nanning, Guangxi, China
Junqing Ma: Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, Shandong, China
Yi Xie: Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, Shandong, China
Yisen Yang: Guangxi Key Laboratory of Agro-environment and Agric-products safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
Yisen Yang: National Demonstration Center for Experimental Plant Science Education, Guangxi University, Nanning, Guangxi, China
Changliang Jing: Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, Shandong, China
Xiangwei You: Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, Shandong, China
Juan Yang: Guangxi Key Laboratory of Agro-environment and Agric-products safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
Juan Yang: National Demonstration Center for Experimental Plant Science Education, Guangxi University, Nanning, Guangxi, China
Chenyu Sun: Guangxi Key Laboratory of Agro-environment and Agric-products safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
Chenyu Sun: National Demonstration Center for Experimental Plant Science Education, Guangxi University, Nanning, Guangxi, China
Shengfeng Qin: Guangxi Key Laboratory of Agro-environment and Agric-products safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
Shengfeng Qin: National Demonstration Center for Experimental Plant Science Education, Guangxi University, Nanning, Guangxi, China
Jianhua Chen: Guangxi Key Laboratory of Agro-environment and Agric-products safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
Jianhua Chen: National Demonstration Center for Experimental Plant Science Education, Guangxi University, Nanning, Guangxi, China
Kexin Cao: Guangxi Key Laboratory of Agro-environment and Agric-products safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
Kexin Cao: National Demonstration Center for Experimental Plant Science Education, Guangxi University, Nanning, Guangxi, China
Jinghua Huang: Guangxi Key Laboratory of Agro-environment and Agric-products safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
Jinghua Huang: National Demonstration Center for Experimental Plant Science Education, Guangxi University, Nanning, Guangxi, China
Yiqiang Li: Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, Shandong, China

DOI: https://doi.org/10.3389/fpls.2022.1050104
Journal volume & issue: Vol. 13

Abstract

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Arbuscular mycorrhizal fungi (AMF) widely exist in the soil ecosystem. It has been confirmed that AMF can affect the root exudates of the host, but the chain reaction effect of changes in the root exudates has not been reported much. The change of soil microorganisms and soil enzyme vigor is a direct response to the change in the soil environment. Root exudates are an important carbon source for soil microorganisms. AMF colonization affects root exudates, which is bound to have a certain impact on soil microorganisms. This manuscript measured and analyzed the changes in root exudates and allelopathic effects of root exudates of maize after AMF colonization, as well as the enzymatic vigor and bacterial diversity of maize rhizosphere soil. The results showed that after AMF colonization, the contents of 35 compounds in maize root exudates were significantly different. The root exudates of maize can inhibit the seed germination and seedling growth of recipient plants, and AMF colonization can alleviate this situation. After AMF colonization, the comprehensive allelopathy indexes of maize root exudates on the growth of radish, cucumber, lettuce, pepper, and ryegrass seedlings decreased by 60.99%, 70.19%, 80.83%, 36.26% and 57.15% respectively. The root exudates of maize inhibited the growth of the mycelia of the pathogens of soil-borne diseases, and AMF colonization can strengthen this situation. After AMF colonization, the activities of dehydrogenase, sucrase, cellulase, polyphenol oxidase and neutral protein in maize rhizosphere soil increased significantly, while the bacterial diversity decreased but the bacterial abundance increased. This research can provide a theoretical basis for AMF to improve the stubble of maize and the intercropping mode between maize and other plants, and can also provide a reference for AMF to prevent soil-borne diseases in maize.

Published in Frontiers in Plant Science

ISSN: 1664-462X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Agriculture: Plant culture
Website: https://www.frontiersin.org/journals/plant-science

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