Multiple phytohormone signalling pathways modulate susceptibility of tomato plants to Alternaria alternata f. sp. lycopersici.
Multiple phytohormone signalling pathways modulate susceptibility of tomato plants to Alternaria alternata f. sp. lycopersici.
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DOI：
10.1093/jxb/ers360
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发表时间：
2013-01
影响因子：
6.9
通讯作者：
Wang Q
中科院分区：
文献类型：
--
作者：
Jia C;Zhang L;Liu L;Wang J;Li C;Wang Q
三种植物激素分子-乙烯（ET），茉莉酸（JA）和水杨酸（SA）-在介导对坏死型真菌病原体的疾病反应中起关键作用。研究了番茄（Solanum lycopersicum）植株与病原真菌互交链格孢（Alternaria alternata f.）（AAL）。ET和茉莉酸不敏感1（JAI 1）受体依赖性JA信号通路是易感性所必需的，而SA反应促进对AAL感染的抵抗。此外，JA在AAL易感性中的作用部分依赖于ET的生物合成和感知，而SA途径增强对AAL的抗性并拮抗ET反应。根据这些结果，提出ET、JA和SA各自可以影响番茄对AAL的敏感性。此外，JA和SA在病原体易感性中的作用分别与ET作用的增强或减弱有关。本研究揭示了番茄抗AAL过程中三条关键激素途径之间的功能关系。
Three phytohormone molecules – ethylene (ET), jasmonic acid (JA) and salicylic acid (SA) – play key roles in mediating disease response to necrotrophic fungal pathogens. This study investigated the roles of the ET, JA, and SA pathways as well as their crosstalk during the interaction between tomato (Solanum lycopersicum) plants and a necrotrophic fungal pathogen Alternaria alternata f. sp. lycopersici (AAL). Both the ET and JASMONIC ACID INSENSITIVE1 (JAI1) receptor-dependent JA signalling pathways are necessary for susceptibility, while SA response promotes resistance to AAL infection. In addition, the role of JA in susceptibility to AAL is partly dependent on ET biosynthesis and perception, while the SA pathway enhances resistance to AAL and antagonizes the ET response. Based on these results, it is proposed that ET, JA, and SA each on their own can influence the susceptibility of tomato to AAL. Furthermore, the functions of JA and SA in susceptibility to the pathogen are correlated with the enhanced or decreased action of ET, respectively. This study has revealed the functional relationship among the three key hormone pathways in tomato defence against AAL.
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影响因子：
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作者：
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通讯作者：
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