Alginate oligosaccharides trigger multiple defense responses in tobacco and induce resistance to Phytophthora infestans

文献类型： 外文期刊

第一作者： Peng, Chune

作者： Peng, Chune;Xu, Wei;Wang, Xinkun;Lodi, Rathna Silviya;Dong, Xiaodan;Peng, Lizeng;Wang, Xipan;Meng, Fanxiao;Zhu, Changxiang;Zhao, Yumeng;Wang, Qingbin

作者机构：

关键词： alginate oligosaccharides; immune inducer; defense response; salicylic acid; chitin elicitor receptor kinase

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：4.8； 五年影响因子：5.7 ）

ISSN： 1664-462X

年卷期： 2025 年 16 卷

页码：

收录情况： SCI

摘要： Alginate oligosaccharides (AOSs), important plant immunity inducers, are widely used in agriculture because of their important role in the biological control of crop diseases. However, the mechanism by which AOSs induce plant resistance to pathogens is not clear. Here, we report AOS with a degree of polymerization of 2-5, which was obtained by a newly reported enzyme Aly2. AOS treatment exhibited high activity in enhancing resistance to Phytophthora infestans (P. infestans). AOS significantly induced reactive oxygen species (ROS) accumulation, calcium influx, stomata closure, and callose deposition. The salicylic acid (SA) synthesis-related gene and the defense-related genes were upregulated after AOS treatment. A transcriptome file generated from AOS-treated seedlings verified the SA pathway and suggested the presence of chitin elicitor receptor kinase (CERK). The subsequent results showed that AtCERK1 binds AOS tightly, suggesting that AtCERK1 is responsible for AOS recognition. This study laid a theoretical foundation for the broad application of AOS.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序