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N-hydroxypipecolic 酸为植物提供增强的微生物模式诱导反应的原料

Marie Löwe¹, Katharina Jürgens¹, Tatyana Zeier¹

¹Institute for Molecular Ecophysiology of Plants, Department of Biology, Heinrich Heine University, Düsseldorf, Germany.

Frontiers in plant science

|August 30, 2023

概括

N-hydroxypipecolic acid (NHP) 为植物提供更强的代谢和转录性免疫反应,以应对鞭毛虫. NHP和酸 (SA) 协同工作,促进植物对病原体的免疫力.

科学领域:

植物免疫力植物免疫力
分子植物病原体相互作用
植物生物化学植物生物化学

背景情况:

一种细菌诱导物 - - 旗素 - - 触发植物免疫反应,但这些反应往往是温和的.
系统性获得性耐药性 (SAR) 是一种由病原体诱导的植物防御机制.
众所周知,N-hydroxypipecolic 酸 (NHP) 诱导了SAR.

研究的目的:

为了研究NHP如何激发Arabidopsis thaliana植物对鞭毛素诱导物flg22.22的增强反应.
阐明NHP,酸 (SA) 和植物免疫反应之间的相互作用.
为了比较局部鞭毛素诱导的耐药性与系统性获得的耐药性.

主要方法:

用NHP和flg22.g处理阿拉比多普西斯植物.
代谢和转录变化的分析.
在NHP和SA生物合成途径中Arabidopsis突变的生物化学和免疫表型.
评估植物对Pseudomonas syringae和Oomycete感染的免疫力.

主要成果:

NHP强烈支持flg22诱导的卡马莱克辛的积累,SA生物合成,烟斗酸 (Pip) 生成和脂质的积累.
较为温和地,NHP优先考虑flg22触发的氨基酸生成和FLG22诱导的受体-KINASE1.1的表达.
在早期感染阶段,NHP和SA相互促进对方的生物合成,并增加增强卡马莱克辛的形成.
在以后的相互作用期间,SA调节NHP水平.
补充NHP和SA对基础免疫和鞭毛素诱导的获得性耐药性有助.

结论:

国家植物保护计划为植物提供强大的代谢和转录防御反应,以抵御鞭毛虫.
在植物免疫力方面,NHP和SA具有协同作用和调节作用.
NHP和SA对各种病原体的基础和获得性耐药性有增强性的贡献.
NHP前体Pip缺乏独立的免疫活动.
揭示了对鞭毛素触发电阻和SAR的机械洞察力.

关键词:

阿拉比多普西斯塔利亚纳.N-基皮皮科利克酸是什么弗拉格林的反应反应植物免疫力植物免疫力启动初始化启动初始化盐酸盐酸是什么盐酸盐酸是什么系统性获得阻力

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