Phosphate deficiency enhances cotton resistance to Verticillium dahliae through activating jasmonic acid biosynthesis and phenylpropanoid pathway
Phosphate deficiency enhances cotton resistance to Verticillium dahliae through activating jasmonic acid biosynthesis and phenylpropanoid pathway
复制标题
缺磷通过激活茉莉酸生物合成和苯丙素途径增强棉花对大丽黄萎病的抗性
DOI：
10.1016/j.plantsci.2020.110724
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发表时间：
2021-01-01
期刊：
影响因子：
5.2
通讯作者：
Zhu, Longfu
中科院分区：
文献类型：
--
作者：
Luo, Xiangyin;Li, Zhonghua;Zhu, Longfu
植物生长在自然环境中，经常受到各种生物和非生物胁迫。缺磷是影响作物田间生产的常见因素，而病原菌入侵是另一个严重的问题。在这里，我们报告了缺乏磷的棉花植株对大丽花黄萎病的抗性增强。转录组学和组织化学分析表明，在缺磷条件下，棉花苯丙素途径被激活，包括木质素和类黄酮的生物合成。代谢组学数据表明，缺磷棉花积累了大量的类黄酮代谢物，在甲醇提取物方面表现出明显的抗真菌活性。此外，缺磷条件下JA的生物合成被激活，缺磷条件下gaos敲除植株的抗病性显著减弱。综上所述，我们的研究表明，磷缺乏通过激活苯丙素途径和JA生物合成来增强棉花对大丽花的抗性，为磷缺乏如何影响植物抗病性提供了新的见解。
Living in natural environment, plants often suffer from various biotic and abiotic stresses. Phosphate deficiency is a common factor affecting crop production in field, while pathogen invasion is another serious problem. Here we report that Pi-deficient cotton plants exhibit enhanced resistance to Verticillium dahliae. Transcriptomic and histochemical analysis revealed that cotton phenylpropanoid pathway was activated under phosphate deficiency, including lignin and flavonoid biosynthesis. Metabolomic data showed that Pi-deficient cotton accumulates many flavonoids metabolites and displays obvious anti-fungi activity in terms of methanolic extract. Additionally, JA biosynthesis was activated under phosphate deficiency and the Pi-deficiency induced disease resistance was significantly attenuated in GhAOS knock down plants. Taken together, our study demonstrated that phosphate deficiency enhanced cotton resistance to V. dahliae through activating phenylpropanoid pathway and JA biosynthesis, providing new insights into how phosphate deficiency affects plant disease resistance.