Shoot Maturation Strengthens FLS2-Mediated Resistance to Pseudomonas syringae.
Shoot Maturation Strengthens FLS2-Mediated Resistance to Pseudomonas syringae.
复制标题
芽成熟增强FLS2介导的对丁香假单胞菌的抵抗力。
DOI：
10.1094/mpmi-02-23-0018-r
复制
发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Yang,Li
中科院分区：
文献类型：
--
作者：
Hu,Lanxi;Kvitko,Brian;Severns,PaulM;Yang,Li
免疫组分的时空调控是正确激活植物防御反应的关键。鞭毛蛋白敏感2（Flagellin-sensing 2，FLS 2）是一种识别细菌鞭毛蛋白的表面受体。FLS 2的免疫功能在芽发育的早期阶段受到损害。然而，年龄依赖性FLS 2信号转导的潜在机制尚不清楚。在这里，我们表明，减少基础免疫力的幼叶againstPseudomonasingaepv.tomatoDC3000是独立的FLS 2。flg 22诱导的标记基因表达和活性氧的激活在幼年和成年阶段是可比的，但胼胝质沉积在成年阶段比幼年阶段更明显。我们进一步证明，microRNA 156，植物衰老的主要调节因子，不影响FLS 2和FRK 1（Flg 22诱导的受体样激酶1）的表达，但轻度抑制胼胝质沉积在幼叶。我们的实验揭示了在衰老过程中调节FLS 2介导的抗性幅度的内在机制。Copyright © 2023 The Author（s）.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。
Temporospatial regulation of immunity components is essential for properly activating plant defense response. Flagellin-sensing 2 (FLS2) is a surface-localized receptor that recognizes bacterial flagellin. The immune function of FLS2 is compromised in early stages of shoot development. However, the underlying mechanism for the age-dependent FLS2 signaling is not clear. Here, we show that the reduced basal immunity of juvenile leaves againstPseudomonas syringaepv.tomatoDC3000 is independent of FLS2. The flg22-induced marker gene expression and reactive oxygen species activation were comparable in juvenile and adult stages, but callose deposition was more evident in the adult stage than the juvenile stage. We further demonstrated that microRNA156, a master regulator of plant aging, does not influence the expression ofFLS2andFRK1(Flg22-induced receptor-like kinase 1) but mildly suppresses callose deposition in juvenile leaves. Our experiments revealed an intrinsic mechanism that regulates the amplitude of FLS2-mediated resistance during aging.Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.