Brassinosteroids mediate susceptibility to brown planthopper by integrating with the salicylic acid and jasmonic acid pathways in rice

Brassinosteroids mediate susceptibility to brown planthopper by integrating with the salicylic acid and jasmonic acid pathways in rice

Improved knowledge of the interactions between plants and insects will facilitate better insect control in crops. Brassinosteroids (BRs) play a vital role in plant growth, developmental processes, and responses to pathogen infection, but the role of BRs in interactions between plants and insects rem...

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Détails bibliographiques
Publié dans:Journal of experimental botany. - 1985. - 69(2018), 18 vom: 14. Aug., Seite 4433-4442
Auteur principal: Pan, Gen (Auteur)
Autres auteurs: Liu, Yuqiang, Ji, Linshan, Zhang, Xiao, He, Jun, Huang, Jie, Qiu, Zeyu, Liu, Daoming, Sun, Zhiguang, Xu, Tingting, Liu, Linglong, Wang, Chunming, Jiang, Ling, Cheng, Xianian, Wan, Jianmin
Format: Article en ligne
Langue:English
Publié: 2018
Accès à la collection:Journal of experimental botany
Sujets:Journal Article Research Support, Non-U.S. Gov't Brassinosteroids Cyclopentanes Oxylipins jasmonic acid 6RI5N05OWW Salicylic Acid O414PZ4LPZ
Description
Résumé:Improved knowledge of the interactions between plants and insects will facilitate better insect control in crops. Brassinosteroids (BRs) play a vital role in plant growth, developmental processes, and responses to pathogen infection, but the role of BRs in interactions between plants and insects remain largely unknown. In this study, we characterized a negative role of BRs in rice defense against brown planthopper (BPH, Nilaparvata lugens) and examined its underlying mechanisms. We found that BPH infestation suppressed the BR pathway while successively activating the salicylic acid (SA) and jasmonic acid (JA) pathways. In addition, BR-overproducing mutants and plants treated with 24-epibrassinolide (BL) showed increased susceptibility to BPH, whereas BR-deficient mutants were more resistant than the wild-type. BRs down-regulated the expression of genes related to the SA pathway and reduced SA content while genes related to the JA pathway were up-regulated and JA content increased after BPH infestation. Furthermore, BR-mediated suppression of the SA pathway was impaired both in JA-deficient and JA-insensitive mutants. Our results demonstrate that BRs promote the susceptibility of rice plants to BPH by modulating the SA and JA pathways
Description:Date Completed 15.10.2019
Date Revised 28.09.2023
published: Print
Citation Status MEDLINE
ISSN:1460-2431
DOI:10.1093/jxb/ery223