Melatonin and dopamine alleviate waterlogging stress in apples by recruiting beneficial endophytes to enhance physiological resilience

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外文摘要：Melatonin and dopamine can potentially prevent waterlogging stress in apples.The current study investigated the mechanism by which melatonin and dopamine alleviate apple waterlogging stress.This study demonstrated that melatonin and dopamine alleviated waterlogging by removing reactive oxygen species(ROS),and that the nitric oxide(NO)content and nitrate reductase(NR)activity were significantly correlated.Melatonin and dopamine were also found to recruit different candidate beneficial endophytes(melatonin:Novosphingobium,Propionivibrio,and Cellvibrio;dopamine:Hydrogenophaga,Simplicispira,Methyloversatilis,Candidatus_Kaiserbacteria,and Humicola),and these endophytes were significantly and positively correlated with plant growth.Network analyses showed that melatonin and dopamine significantly affected the endophytic bacterial and fungal communities under waterlogging stress.The metabolomic results showed that melatonin and dopamine led to waterlogging resistance by upregulating the abundance of beneficial substances such as amino acids,flavonoids,coumarins,and organic acids.In addition,melatonin and dopamine regulated the physicochemical properties of the soil,which altered the endophyte community and affected plant growth.The co-occurrence network demonstrated close and complex relationships among endophytes,metabolites,soil,and the plants.Our results demonstrate that melatonin and dopamine alleviate waterlogging stress in apples by recruiting beneficial endophytes to enhance physiological resilience.This study provides new insights into how melatonin and dopamine alleviate stress and a theoretical basis for synergistic beneficial microbial resistance to waterlogging stress.

外文关键词：

dopamineendophytesMalus hupehensismelatoninmetabolomicswaterlogging

作者：

Yang Cao、Peihua Du、Yuwei Shang、Jiahao Ji、Leiqing Tan、Xue Zhang、Jizhong Xu、Bowen Liang

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作者单位：

College of Horticulture,Hebei Agricultural University,Baoding 071001,China

基金：

National Natural Science Foundation of ChinaNatural Science Foundation of Hebei,ChinaScience and Technology Project of Hebei Education Department,ChinaIntroduced Talents Project of Hebei Agricultural University,Chinaearmarked fund for Hebei Apple Innovation Team of Modern Agroindustry Technology Research System,Chinaearmarked fund for the China Agricultural Research System,China

项目编号：

31901964C2021204158BJK2022012YJ201904HBCT2024150205CARS-27

出版年：

2024

DOI：

10.1016/j.jia.2023.12.012

农业科学学报(英文)

中国农业科学院农业信息研究所

农业科学学报(英文)

CSTPCD

影响因子：0.576

ISSN：2095-3119

年,卷(期)：2024.23(7)