HbCOI1 perceives jasmonate to trigger signal transduction in Hevea brasiliensis. (8th October 2020)

• Record Type: Journal Article
• Authors: Chen, Juan; Yang, Haitao; Ma, Sui; Yao, Ruifeng; Huang, Xi; Yan, Jianbin; Xie, Daoxin
• Editors: Brunner, Amy
• Is Part Of: Tree physiology. Volume 41:Number 3(2021)
• Page Start: 460
• Page End: 471
• Publication Date: 2020-10-08
• Subjects: HbCOI1 -- HbJAZ -- Hevea brasiliensis -- jasmonate -- receptor; Trees -- Physiology -- Periodicals; 582.16
• DOI: 10.1093/treephys/tpaa124
• Languages: English
• ISSNs: 0829-318X

Abstract

Abstract: Natural rubber, a strategically essential raw material used in manufacturing throughout the world, is produced from coagulated and refined latex of rubber tree ( Hevea brasiliensis ). It is known that phytohormone jasmonate (JA) plays an essential role in regulating latex biosynthesis. However, it is unclear how the JA signal is sensed in a rubber tree. Here, we showed that H. brasiliensis CORONATINE-INSENSITIVE 1 (HbCOI1) acts as a receptor that perceives JA to recruit H. brasiliensis JASMONATE ZIM DOMAIN1 (HbJAZ1) for signal transduction. We found that HbCOI1 restores male sterility and JA responses of the coi1-1 mutant in Arabidopsis . The identification of a JA receptor in the rubber tree is essential for elucidating the molecular mechanisms underlying JA-regulated latex biosynthesis. Our results elucidate the mechanism of JA perception in H. brasiliensis and also provide an efficient strategy to identify JA receptors in woody plants.