The IBI1 Receptor ofβ-Aminobutyric Acid Interacts with VOZ Transcription Factors to Regulate Abscisic Acid Signaling and Callose-Associated Defense
作者机构：P3 Institute for Plant and Soil BiologyDepartment of Animal and Plant SciencesThe University of SheffieldSheffield S102TNUK School of BiosciencesUniversity of BirminghamBirmingham B152TTUK
出 版 物：《Molecular Plant》 (分子植物（英文版）)
年 卷 期：2020年第13卷第10期
页 面：1455-1469页
核心收录：
学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 0901[农学-作物学] 0902[农学-园艺学]
基 金：the European Research Council(ERC,no.309944,“Prime-A-Plant”) J.T..a Research Leadership Award from the Leverhulme Trust(no.RL-2012-042) J.T..a BBSRC-IPA grant to J.T.(BB/P006698/1) J.T..and an ERC-PoC grant to J.T.(no.824985,“ChemPrime”)
主 题：IBI1 priming abscisic acid β-aminobutyric acid callose E-MTAB-8720
摘 要：Extemal and internal signals can prime the plant immune system for a faster and/or stronger response to pathogen attack.β-aminobutyric acid(BABA)is an endogenous stress metabolite that induces broad-spectrum disease resistance in *** perception in Arabidopsis is mediated by the aspartyl tRNA synthetase IBI1,which activates priming of multiple immune responses,including callose-associated cell wall defenses that are under control by abscisic acid(ABA).However,the immediate signaling components after BABA perception by IBI1,as well as the regulatory role of ABA therein,remain ***,we have studied the early signaling events controlling IBI1-dependent BABA-induced resistance(BABAIR),using untargeted transcriptome and protein interaction *** analysis revealed that IBI1-dependent expression of BABA-IR against the biotrophic oomycete Hyaloperonospora arabidopsidis is associated with suppression of ABA-inducible abiotic stress *** interaction studies identified the VOZ1 and VOZ2 transcription factors(TFs)as IBI1-interacting partners,which are transcrip-tionally induced by ABA but suppress pathogen-induced expression of ABA-dependent ***,we show that VOZ TFs require nuclear localization for their contribution to BABA-IR by mediating augmented expression of callose-associated ***,our study indicates that the IBI1-VOZ signaling module channels pathogen-induced ABA signaling toward cell wall defense while simultaneously suppressing abiotic stress-responsive genes.
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