生物
拟南芥
开枪
拟南芥
共生
调节器
植物
光合有效辐射
寄主(生物学)
细菌
突变体
生态学
光合作用
基因
遗传学
生物化学
作者
Shiji Hou,Thorsten Thiergart,Nathan Vannier,Fantin Mesny,Jörg Ziegler,Brigitte Pickel,Stéphane Hacquard
出处
期刊:Nature plants
[Springer Nature]
日期:2021-07-05
卷期号:7 (8): 1078-1092
被引量:96
标识
DOI:10.1038/s41477-021-00956-4
摘要
Bidirectional root-shoot signalling is probably key in orchestrating stress responses and ensuring plant survival. Here, we show that Arabidopsis thaliana responses to microbial root commensals and light are interconnected along a microbiota-root-shoot axis. Microbiota and light manipulation experiments in a gnotobiotic plant system reveal that low photosynthetically active radiation perceived by leaves induces long-distance modulation of root bacterial communities but not fungal or oomycete communities. Reciprocally, microbial commensals alleviate plant growth deficiency under low photosynthetically active radiation. This growth rescue was associated with reduced microbiota-induced aboveground defence responses and altered resistance to foliar pathogens compared with the control light condition. Inspection of a set of A. thaliana mutants reveals that this microbiota- and light-dependent growth-defence trade-off is directly explained by belowground bacterial community composition and requires the host transcriptional regulator MYC2. Our work indicates that aboveground stress responses in plants can be modulated by signals from microbial root commensals.
科研通智能强力驱动
Strongly Powered by AbleSci AI