A role for calmodulin-like proteins in herbivore defense path-ways in plants
A role for calmodulin-like proteins in herbivore defense path-ways in plants
复制标题
钙调蛋白样蛋白在植物食草动物防御途径中的作用
DOI：
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
A. Mithöfer
中科院分区：
文献类型：
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作者：
Sandra S. Scholz;Monika Heyer;J. Vadassery;A. Mithöfer
在其一生中，植物需要适应来自非生物和生物环境的各种刺激，其中一些代表了胁迫因素。一种主要的生物胁迫因素是以植物为食的草食性昆虫的攻击。但植物并非毫无防御能力；他们配备了不同防御层的武器库。除了作为第一道防线的机械屏障外，植物还可以产生多种化学物质，如有毒的次生代谢物、抗草食蛋白或参与间接防御的化合物。许多防御性化合物的产生是由 HAMP 触发的，HAMP 是昆虫口腔分泌物 (OS) 中的诱导子，在昆虫进食时与受伤的植物组织接触。感知这些刺激后发生的早期事件仍然知之甚少。细胞质钙的升高是这些早期事件之一，它激活下游防御信号网络，包括某些植物激素。为了实现这一目标，不同钙传感器蛋白对钙信号的正确解码非常重要。在拟南芥中，类钙调蛋白 (CML)（一组钙传感器蛋白）的几个成员在用多面性草食动物斜纹夜蛾 (Spodoptera littoralis) 的 OS 处理后被诱导。其中一些 CML 通过调节茉莉酸途径参与草食动物的防御。
During their lifetime, plants need to adapt to various stimuli originating from the abiotic and biotic environment, some of which represent stress factors. One major biotic stress factor is the attack of herbivorous insects feeding on the plant. But plants are not defenseless; they are equipped with an arsenal of different defense layers. Additionally to mechanical barriers, which are a first line of defense, the plant can produce a variety of chemicals like toxic secondary metabolites, anti-herbivory proteins or compounds involved in indirect defense. The production of many of these defensive compounds is triggered by HAMPs, elicitors in insects’ oral secretions (OS), which come in contact with the wounded plant tissues while insects are feeding. The early events upon perception of these stimuli are still poorly understood. Elevations in cytosolic calcium are one of these early events, which activate the downstream defense signaling network, including certain phytohormones. To reach this, a proper decoding of calcium signals by different calcium sensor proteins is important. In Arabidopsis thaliana, several members of the calmodulinlike proteins (CMLs), one group of calcium sensor proteins, is induced upon treatment with OS of the generalist herbivore Spodoptera littoralis. Some of these CMLs are involved in herbivore defense by modulating the jasmonate pathway.
DOI：
10.1073/pnas.0711730105
发表时间：
2008-04-22
影响因子：
11.1
作者：
Shroff, Rohit;Vergara, Fredd;Gershenzon, Jonathan
通讯作者：
Gershenzon, Jonathan