The enzymatic hydrolysate of fucoidan from Sargassum hemiphyllum triggers immunity in plants----中国科学院遗传发育所农业资源研究中心

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论文题目	The enzymatic hydrolysate of fucoidan from Sargassum hemiphyllum triggers immunity in plants
作　　者	王冉冉、白娇娇、Xiao, Zejun;肖泽君，陈可欣，;
发表年度	2023
刊物名称	JOURNAL OF PLANT PHYSIOLOGY
卷、期、页码	283; ;
影响因子
论文摘要	Fucoidans are polysaccharides that consist predominantly of sulfated L-fucoses, from which, fucoidan oligo-saccharides (FOSs) are prepared through different methods. Fucoidan has versatile physiological activities, like antiviral functions against SARS CoV-2 and bioactivitiy in enhancing immune responses. Although fucoidan or FOS has been widely used in mammals as functional foods and new drugs, its application in plants is still very limited. Moreover, whether fucoidan or its derived hydrolytic products can trigger immune responses in plants remained unknown. In this work, we demonstrate that the fucoidan enzymatic hydrolysate (FEH) prepared from Sargassum hemiphyllum triggers various immune responses, such as ROS production, MAPK activation, gene expression reprogramming, callose deposition, stomatal closure, and plant resistance to the bacterial strain Pseudomonas syringae pv. tomato (Pst) DC3000. Notably, FEH did not induce Arabidopsis root growth inhibition at the concentration used for triggering other immune responses. Our work suggests that EHF can potentially be used as a non-microbial elicitor in agricultural practices to protect plants from pathogen infection.
全文链接	http://dx.doi.org/10.1016/j.jplph.2023.153967
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