Recognition of microbe/damage-associated molecular patterns by leucine-rich repeat pattern recognition receptor kinases confers salt tolerance in plants
Recognition of microbe/damage-associated molecular patterns by leucine-rich repeat pattern recognition receptor kinases confers salt tolerance in plants
复制标题
通过富含亮氨酸的重复模式识别受体激酶对微生物/损伤相关分子模式的识别赋予植物耐盐性
DOI：
10.1094/mpmi-07-21-0185-fi
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Parker Jane E
中科院分区：
文献类型：
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作者：
Saijo Yusuke;Loo Eliza;Tajima Yuri;Yamada Kohji;Kido Shota;Hirase Taishi;Ariga Hirotaka;Fujiwara Tadashi;Tanaka Keisuke;Taji Teruaki;Somssich Imre;Parker Jane E
在植物中，诱导免疫的第一层由模式识别受体（PRR）赋予，其结合微生物和损伤相关的分子模式以激活模式触发免疫（PTI）。当细胞内受体识别病原体效应物时，PTI被加强或随后是另一种有效形式的免疫，称为效应物触发的免疫。据报道，免疫信号调节剂也影响非生物胁迫反应，但其控制原则和机制仍不明确。在这里，我们报告说，PRRs富含亮氨酸重复胞外域也赋予耐盐性inArabidopsis thaliana，以下识别同源配体，如细菌鞭毛蛋白（flg 22表位）和延伸因子Tu（elf 18表位），和内源性Pep肽。模式触发的耐盐性（PTST）需要真正的PTI信号组件;即，PRR相关激酶BAK 1和BIK 1和NADPH氧化酶RBOHD。暴露于盐胁迫诱导Pep前体的释放，指出内源性免疫原性肽参与发展植物对高盐的耐受性。转录组分析揭示了PTST靶基因的清单，其在预暴露于免疫原性模式后增加或获得盐响应性。在良好的一致性，植物挑战与非病原性细菌也获得耐盐性的方式依赖于PRRs。我们的研究结果提供了对PRRs赋予的植物生物或非生物胁迫交叉耐受性的信号可塑性的深入了解。版权所有© 2022作者。这是一篇开放获取的文章，在CC BY-NC-ND 4.0国际许可下分发。
In plants, a first layer of inducible immunity is conferred by pattern recognition receptors (PRRs) that bind microbe- and damage-associated molecular patterns to activate pattern-triggered immunity (PTI). PTI is strengthened or followed by another potent form of immunity when intracellular receptors recognize pathogen effectors, termed effector-triggered immunity. Immunity signaling regulators have been reported to influence abiotic stress responses as well, yet the governing principles and mechanisms remain ambiguous. Here, we report that PRRs of a leucine-rich repeat ectodomain also confer salt tolerance inArabidopsis thaliana, following recognition of cognate ligands such as bacterial flagellin (flg22 epitope) and elongation factor Tu (elf18 epitope), and the endogenous Pep peptides. Pattern-triggered salt tolerance (PTST) requires authentic PTI signaling components; namely, the PRR-associated kinasesBAK1andBIK1and the NADPH oxidaseRBOHD. Exposure to salt stress induces the release of Pep precursors, pointing to the involvement of the endogenous immunogenic peptides in developing plant tolerance to high salinity. Transcriptome profiling reveals an inventory of PTST target genes, which increase or acquire salt responsiveness following a preexposure to immunogenic patterns. In good accordance, plants challenged with nonpathogenic bacteria also acquired salt tolerance in a manner dependent on PRRs. Our findings provide insight into signaling plasticity underlying biotic or abiotic stress cross-tolerance in plants conferred by PRRs.Copyright © 2022 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.