Cortical microtubule as a sensor and target of nitric oxide signal during the defence responses to Verticillium dahliae toxins in Arabidopsis.
Cortical microtubule as a sensor and target of nitric oxide signal during the defence responses to Verticillium dahliae toxins in Arabidopsis.
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DOI：
10.1111/j.1365-3040.2009.01939.x
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发表时间：
2009-04
期刊：
影响因子：
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通讯作者：
F. Shi;Lin-Lin Yao-Lin;Bao-Lei Pei;Qun Zhou;Xiuyu Li;Yun Li;Ying-zhang Li
中科院分区：
文献类型：
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作者：
F. Shi;Lin-Lin Yao-Lin;Bao-Lei Pei;Qun Zhou;Xiuyu Li;Yun Li;Ying-zhang Li
植物响应大丽轮枝菌（Verticillium dahliae，VD）的信号转导分子机制尚不清楚。在这里，我们表明，拟南芥反应VD毒素与一氧化氮（NO）和皮质微管不稳定的快速爆发。维生素D-毒素处理引发了皮质微管网络的破坏。这种破坏可以受到NO产生的影响。然而，皮质微管破坏不参与调节NO的产生。结果表明，NO可能作为上游信号分子触发皮层微管的解聚。皮质微管可能是NO信号的靶点，也可能是介导PR-1基因表达激活的传感器。这些结果表明，NO的产生和皮层微管动力学似乎是重要的信号系统的一部分，并参与防御机制的VD毒素在拟南芥。
The molecular mechanisms of signal transduction of plants in response to Verticillium dahliae (VD) are not known. Here, we show that Arabidopsis reacts to VD-toxins with a rapid burst of nitric oxide (NO) and cortical microtubule destabilization. VD-toxins treatment triggered a disruption of cortical microtubules network. This disruption can be influenced by NO production. However, cortical microtubule disruptions were not involved in regulating the NO production. The results indicated that NO may act as an upstream signalling molecule to trigger the depolymerization of cortical microtubule. Cortical microtubules may act as a target of NO signal and as a sensor to mediate the activation of PR-1 gene expression. These results suggested that NO production and cortical microtubule dynamics appeared to be parts of the important signalling system and are involved in the defence mechanisms to VD-toxins in Arabidopsis.