Affiliation:
1. College of Plant Science and Technology Beijing University of Agriculture No. 7 Beinong Road, Changping District Beijing 102206 China
2. Beijing Key Laboratory for Agricultural Application and New Technique Beijing University of Agriculture Beijing 102206 China
Abstract
Summary
Jasmonic acid (JA) is involved in the modulation of defence and growth activities in plants. The best‐characterized growth‐defence trade‐offs stem from antagonistic crosstalk among hormones.
In this study, we first confirmed that JA negatively regulates root‐knot nematode (RKN) susceptibility via the root exudates (REs) of tomato plants. Omics and toxicological analyses implied that kaempferol, a type of flavonol, from REs has a negative effect on RKN infection.
We demonstrated that SlMYB57 negatively regulated kaempferol contents in tomato roots, whereas SlMYB108/112 had the opposite effect. We revealed that JA fine‐tuned the homeostasis of kaempferol via SlMYB‐mediated transcriptional regulation and the interaction between SlJAZs and SlMYBs, thus ensuring a balance between lateral root (LR) development and RKN susceptibility.
Overall, this work provides novel insights into JA‐modulated LR development and RKN susceptibility mechanisms and elucidates a trade‐off model mediated by JA in plants encountering stress.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Cited by
3 articles.
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