Epsilon-poly-L-lysine and methyl jasmonate synergistically inhibit Pseudomonas tolaasii-caused brown spot disease in postharvest button mushroom (Agaricus bisporus)
文献类型： 外文期刊
作者： Jiang, Hanyue 1 ; Wang, Xiuhong 1 ; Ma, Mengsha 1 ; Yuan, Shuai 1 ; Zhang, Lei 1 ; Jiao, Lu 1 ; Shi, Zixuan 1 ; Zheng, Yanyan 2 ; Chen, Lin 3 ; Meng, Demei 1 ;
作者机构： 1.Tianjin Univ Sci & Technol, Coll Food Sci & Engn, Tianjin Key Lab Food Qual & Hlth, Tianjin 300457, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Inst Agrifood Proc & Nutr, Beijing 100097, Peoples R China
3.Nanyang Technol Univ, Sch Chem Chem Engn & Biotechnol, Singapore 637459, Singapore
关键词： Agaricus bisporus; Brown spot disease; Epsilon-poly; L -lysine; Induced disease resistance; Methyl jasmonate; Postharvest storage
期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.2； 五年影响因子：4.6 ）
ISSN： 0304-4238
年卷期： 2024 年 338 卷
页码：
收录情况： SCI
摘要： The brown spot disease, caused by Pseudomonas tolaasii is a serious disease that significantly affects the quality of Agaricus bisporus. To develop a safe and effective method to protect mushrooms from disease, the effects of epsilon-poly-l-lysine (epsilon-PL) and methyl jasmonate (MeJA), either alone or in combination, on brown spot disease caused by P. tolaasii in A. bisporus were investigated. Our results showed that both epsilon-PL (100 mg L-1) and MeJA (100 mu mol L-1) effectively reduced the incidence rate and disease index, inhibited the activity of polyphenol oxidase activated by P. tolaasii, and suppressed the production of malonaldehyde, and their combination achieved a more effective effect; the reason for this result was not due to their coordinated antibacterial activity in vitro, but rather the synergistic induction of disease resistance in mushrooms. The combined treatment of epsilon-PL and MeJA not only increased the content of pathogenesis-related proteins (PRs), the activities of defense enzymes and antioxidant enzymes, but also enhanced the activities of phenylpropanoid pathway-related enzymes and the accumulation of total phenolic and total flavonoid substances. Furthermore, the combined treatment was also more effective in increasing JA levels and the activities of lipoxygenase and allene oxide synthase compared to treatment with either epsilon-PL or MeJA alone. Correlation analysis further demonstrated the important role of defense-related enzymes and PRs as well as phenylpropanoid pathway-related enzymes and metabolites in the inhibition of epsilon-PL and MeJA alone or in combination on the incidence rate and disease index. Taken together, our results showed that epsilon-PL combined with MeJA treatment has good prospects for alleviating mushroom brown spot disease.
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