title: Epigallocatechin-3-gallate functions as a physiological regulator by modulating the jasmonic acid pathway.
abstract: Flavonoids, a class of plant polyphenols derived from plant secondary metabolism, play important roles in plant development and have beneficial effects on human health. Epigallocatechin-3-gallate (EGCG) is the most abundant polyphenol, and its molecular and biochemical mechanism have been followed with interest. The shared signaling heritage or convergence of organisms has allowed us to extend this research into the model plant, Arabidopsis thaliana. Here, we showed that EGCG could promote jasmonic acid (JA) signaling in A. thaliana. EGCG not only inhibited seed germination but also elevated the resistance to necrotrophic Botrytis cinerea, partly by altering the relative strength of JA signaling. Accordingly, JA marker gene induction, seed germination inhibition and the increased resistance to B. cinerea were attenuated in the JA-insensitive coi1-2 mutant. The coi1-2 mutant was partially insensitive to the treatment of EGCG, further implicating the function of EGCG in JA signaling and/or perception. Our results indicate that EGCG, a member of the flavonoid class of polyphenols, affects signal processing in seed development and disease susceptibility via modulation of JA signaling.
authors.affiliation: State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China; Department of Tea Science, Zhejiang University, Hangzhou, 310058, China.
authors.forename: Gaojie
authors.initials: G
authors.lastname: Hong
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
authors.forename: Danielle
authors.initials: D
authors.lastname: Hochstetter
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Gao
authors.forename: Ping
authors.initials: P
authors.lastname: Xu
authors.forename: Yuefei
authors.initials: Y
authors.lastname: Wang
mesh_terms: D017360:Arabidopsis / Q000187:drug effects / Q000235:genetics / Q000382:microbiology / Q000502:physiology*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism; D020171:Botrytis / Q000502:physiology*; D002392:Catechin / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D003517:Cyclopentanes / Q000378:metabolism; D004198:Disease Susceptibility; D005419:Flavonoids / Q000378:metabolism; D018506:Gene Expression Regulation, Plant; D054883:Oxylipins / Q000378:metabolism; D010935:Plant Diseases / Q000276:immunology* / Q000382:microbiology; D010937:Plant Growth Regulators / Q000378:metabolism / Q000494:pharmacology*; D020156:Salicylic Acid / Q000378:metabolism; D015398:Signal Transduction
chemical_list: D029681:Arabidopsis Proteins; D003517:Cyclopentanes; D005419:Flavonoids; D054883:Oxylipins; D010937:Plant Growth Regulators; C011006:jasmonic acid; D002392:Catechin; C045651:epigallocatechin gallate; D020156:Salicylic Acid