| Title: | The jasmonic acid-amino acid conjugates JA-Val and JA-Leu are involved in rice resistance to herbivores |
| Author(s): | Fu W; Jin G; Jimenez-Aleman GH; Wang X; Song J; Li S; Lou Y; Li R; |
| Address: | "State Key Laboratory of Rice Biology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China. Department of Plant Molecular Genetics, National Centre for Biotechnology (CNB), National Research Council (CSIC), Madrid, Spain. Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, China. Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China" |
| ISSN/ISBN: | 1365-3040 (Electronic) 0140-7791 (Linking) |
| Abstract: | "The phytohormone jasmonic acid (JA) plays a core role in plant defence against herbivores. When attacked by herbivores, JA and its bioactive derivatives are accumulated at the damage site, and subsequently perceived by the jasmonate co-receptors COI1 and JAZ proteins. The (+)-7-iso-jasmonoyl-L-isoleucine (JA-Ile) is known to be the main active JA derivative controlling vascular plant responses to herbivores as well as other JA-regulated processes. However, whether other endogenous JA-amino acid conjugates (JA-AAs) are involved in herbivore-induced defence responses remain unknown. Here, we investigated the role of herbivore-elicited JA-AAs in the crop plant rice. The levels of five JA-AAs were significantly increased under the armyworm, leaf folder and brown planthopper attack. Of the elicited JA derivatives, JA-Ile, JA-Val and JA-Leu could serve as ligands to promote the interaction between rice COI1 and JAZs, inducing OsJAZ4 degradation in vivo. JA-Val or JA-Leu treatment increased the expression of JA- and defence-related pathway genes but not JA-Ile levels, suggesting that these JA-AAs may directly function in JA signalling. Furthermore, the application of JA-Val or JA-Leu resulted in JA-mediated plant growth inhibition, while enhancing plant resistance to herbivore attack. This study uncovers that JA-Val and JA-Leu also play a role in rice defence against herbivores" |
| Keywords: | "Animals Cyclopentanes/chemistry/*metabolism/pharmacology Gene Expression Regulation, Plant/drug effects *Herbivory Leucine/chemistry Moths Oryza/drug effects/metabolism/*physiology Oxylipins/chemistry/*metabolism/pharmacology Plants, Genetically Modified;" |
| Notes: | "MedlineFu, Wenjie Jin, Gaochen Jimenez-Aleman, Guillermo H Wang, Xinjue Song, Jiajin Li, Suhua Lou, Yonggen Li, Ran eng Research Support, Non-U.S. Gov't 2021/10/19 Plant Cell Environ. 2022 Jan; 45(1):262-272. doi: 10.1111/pce.14202. Epub 2021 Oct 24" |
