Biotic and abiotic stress responses through calcium-dependent protein kinase (CDPK) signaling in wheat (Triticum aestivum L.)
Biotic and abiotic stress responses through calcium-dependent protein kinase (CDPK) signaling in wheat (Triticum aestivum L.)
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小麦 (Triticum aestivum L.) 中通过钙依赖性蛋白激酶 (CDPK) 信号传导的生物和非生物胁迫反应
DOI：
10.4161/psb.3.9.5757
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发表时间：
2008-01-01
影响因子：
2.9
通讯作者：
Mao, Long
中科院分区：
文献类型：
--
作者：
Li, Aili;Wang, Xiang;Mao, Long
钙依赖性蛋白激酶（Ca2 + dependent protein kinases，CDPKs）能够感知植物细胞内钙离子浓度的变化，在植物抗病和各种逆境反应的信号转导中发挥重要作用。在所研究的20个小麦CDPK基因中，有10个基因对干旱、盐和阿坝处理有反应。与以前的观察结果一致，一个CDPK基因被证明对小麦中的多种非生物胁迫做出响应，这表明CDPK可能是多种信号传导途径的汇聚点。在对小麦白粉病菌（Blumeria graminis triumphis，Bgt）感染或过氧化氢（H2O2）处理有反应的12个小麦CDPK基因中，有8个基因对非生物胁迫也有反应，表明生物胁迫和非生物胁迫信号通路之间存在着相互作用。系统发育分析表明，其中一些基因与其他物种的CDPK基因关系密切，其功能已被部分研究，表明小麦CDPK基因具有相似的功能。结合最新的知识CDPK功能和我们的观察，一个模型被开发出来的项目在生物和非生物胁迫反应的信号转导小麦CDPK基因的可能作用。
Calcium-dependent protein kinases (CDPKs) sense the calcium concentration changes in plant cells and play important roles in signaling pathways for disease resistance and various stress responses as indicated by emerging evidences. Among the 20 wheat CDPK genes studied, 10 were found to respond to draught, salinity and ABA treatments. Consistent with previous observations, one CDPK gene was shown to respond to multiple abiotic stresses in wheat suggesting that CDPKs could be converging points for multiple signaling pathways. Among the 12 wheat CDPK genes that were responsive to Blumeria graminis tritici (Bgt) infection or the treatment of hydrogen peroxide (H2O2), eight also responded to abiotic stresses, suggesting a cross-talk between biotic and abiotic stress signaling pathways. Phylogenetic analysis indicated that some of these genes were closely related to CDPKs from other species, whose functions have been partially studied, suggesting similar functions wheat CDPK genes. Combining the up-to-date knowledge of CDPK functions and our observations, a model was developed to project the possible roles of wheat CDPK genes in the signaling of biotic and abiotic stress responses.