Antifungal activity and mechanisms of ε-poly- L-lysine (ε-PL) against Colletotrichum lagenarium in marrow squash
文献类型： 外文期刊
作者： Liu, Chenxia 1 ; Liu, Hongru 1 ; Wang, Chunfang 1 ; Kong, Fanjun 2 ; He, Hui 1 ; Qiao, Yongjin 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Crop Breeding & Cultivat Res Inst, 1000 Jingqi Rd, Shanghai 201403, Peoples R China
2.Shanghai Ocean Univ, Coll Food Sci & Technol, 999 Huchenghuan Rd, Shanghai 201306, Peoples R China
关键词： Marrow squash; epsilon-Poly-L -lysine; Colletotrichum lagenarium; Antifungal activity; Plasma membrane; Plasma membrane
期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：6.6； 五年影响因子：6.9 ）
ISSN： 0023-6438
年卷期： 2024 年 199 卷
页码：
收录情况： SCI
摘要： Fungal diseases are major adverse factors leading to quality deterioration and spoilage of post-harvest horticultural products. epsilon-PL is widely recognized as a natural antibacterial agent because of its broad spectrum antimicrobial property. This study was to investigate the antifungal activity of epsilon-PL against C. lagenarium, and elucidate the underlying mechanism involved. In vivo were also confirmed that epsilon-PL treatment showed an obvious inhibitory effect for control of anthracnose caused by C. lagenarium in marrow squash. Moreover, in vitro assay showed that epsilon-PL exerted strongly antifungal activity against mycelial growth on colony diameter, spore germination and mycelium dry weight of C. lagenarium, with the increase of the concentration of epsilon-PL. Furthermore, compared with the control, damage the cell membrane of C. lagenarium and increase MDA content, significant leakages of intercellular electrolytes, nucleic acid, protein and sugar, suggested that epsilon-PL treatment increased the membrane permeability of C. lagenarium. Simultaneously, epsilon-PL significantly inhibited the activity of enzyme related to energy metabolism in C. lagenarium. The results were observed by SEM and TEM that epsilon-PL treatment damaged the morphology of C. lagenarium. In conclusion, epsilon-PL concentration higher than 400 mg L-1 might be used as an antifungal agents to control anthracnose caused by C. lagenarium in marrow squash.
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