Transcriptional Basis of Drought-Induced Susceptibility to the Rice Blast Fungus Magnaporthe oryzae.
Transcriptional Basis of Drought-Induced Susceptibility to the Rice Blast Fungus Magnaporthe oryzae.
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DOI：
10.3389/fpls.2016.01558
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发表时间：
2016
影响因子：
5.6
通讯作者：
Morel JB
中科院分区：
文献类型：
--
作者：
Bidzinski P;Ballini E;Ducasse A;Michel C;Zuluaga P;Genga A;Chiozzotto R;Morel JB
植物往往同时面临多种逆境。了解它们如何反应以及病原体如何适应这种组合压力的记录很少。在这里，我们开发了一个实验系统，模拟田间间歇性干旱水稻接种病原真菌Magnaporthe稻瘟病菌。该实验系统触发了易感性的增强，这可能与植物免疫的几个方面的抑制有关，即氧化爆发和几个发病相关基因的转录。非常引人注目的是，在干旱条件下通过RNASeq分析真菌转录的分析表明，真菌正在极大地改变其毒力程序：与未受胁迫的植物相比，编码小分泌蛋白的基因在干旱植物中被大量抑制，而编码参与细胞壁降解的酶的基因被诱导。我们还表明，干旱可以通过影响R植物基因和/或病原体效应子表达导致几个主要抗性基因的部分崩溃。我们提出了一个模型，其中一个未知的植物信号可以触发病原体的毒力程序的变化，以适应受干旱影响的植物宿主感染前。
Plants are often facing several stresses simultaneously. Understanding how they react and the way pathogens adapt to such combinational stresses is poorly documented. Here, we developed an experimental system mimicking field intermittent drought on rice followed by inoculation by the pathogenic fungus Magnaporthe oryzae. This experimental system triggers an enhancement of susceptibility that could be correlated with the dampening of several aspects of plant immunity, namely the oxidative burst and the transcription of several pathogenesis-related genes. Quite strikingly, the analysis of fungal transcription by RNASeq analysis under drought reveals that the fungus is greatly modifying its virulence program: genes coding for small secreted proteins were massively repressed in droughted plants compared to unstressed ones whereas genes coding for enzymes involved in degradation of cell-wall were induced. We also show that drought can lead to the partial breakdown of several major resistance genes by affecting R plant gene and/or pathogen effector expression. We propose a model where a yet unknown plant signal can trigger a change in the virulence program of the pathogen to adapt to a plant host that was affected by drought prior to infection.
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影响因子：
16.6
作者：
Cheng, Cheng;Gao, Xiquan;Feng, Baomin;Sheen, Jen;Shan, Libo;He, Ping
通讯作者：
He, Ping
影响因子：
4.9
作者：
Delteil, Amandine;Blein, Melisande;Morel, Jean-Benoit
通讯作者：
Morel, Jean-Benoit
通过比较表达谱分析深入了解旱稻和水稻对干旱胁迫的差异反应。
影响因子：
5.6
作者：
Ding X;Li X;Xiong L
通讯作者：
Xiong L
影响因子：
5.6
作者：
De Vleesschauwer D;Xu J;Höfte M
通讯作者：
Höfte M
影响因子：
3.3
作者：
Chiapello H;Mallet L;Guérin C;Aguileta G;Amselem J;Kroj T;Ortega-Abboud E;Lebrun MH;Henrissat B;Gendrault A;Rodolphe F;Tharreau D;Fournier E
通讯作者：
Fournier E