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Significance Phytohormones play a key role in plant environmental adaptation and survival and are perceived by specific receptors. Uncovering the determinants of ligand specificity of hormone receptors is a fundamental… Click to show full abstract
Significance Phytohormones play a key role in plant environmental adaptation and survival and are perceived by specific receptors. Uncovering the determinants of ligand specificity of hormone receptors is a fundamental scientific question essential to understanding how signaling pathways appeared and evolved. By comparing the specific features in the COI1/JAZ co-receptor that determine its recognition of JA-Ile in angiosperms or dn-OPDA in bryophytes, we have discovered a JAZ role in determining ligand specificity of the COI1/JAZ co-receptor. Furthermore, we have identified that, by retaining a co-receptor with features of both bryophytes and angiosperms, lycophytes represent a key transition intermediate in the evolution of the ligand–receptor interaction in the jasmonate pathway.
Journal Title: Proceedings of the National Academy of Sciences of the United States of America
Year Published: 2022
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