文献类型： 外文期刊
第一作者： Ren, Jie
作者： Ren, Jie;Tong, Jie;Huang, Xiaoqing;Dong, Pan;Ren, Maozhi;Ren, Maozhi;Li, Peihua
作者机构：
关键词： Potato; Postharvest disease; Fusarium oxysporum; Biological control; Transcriptome
期刊名称：PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY （ 影响因子：2.747； 五年影响因子：2.388 ）
ISSN： 0885-5765
年卷期： 2021 年 113 卷
页码：
收录情况： SCI
摘要： Fusarium dry rot was one of the most serious diseases of potato during storage. Biological control based on the use of natural bioactive compounds to suppress tuber diseases offer an attractive alternative. As a biopolymer, chitosan had broad-spectrum antimicrobial activity against various phytopathogens and could induce plant resistance to pathogens. Previous observations showed that chitosan displayed effective inhibition on potato dry rot caused by Fusarium sambucinum, Fusarium sulphureum, etc., however, little is known whether chitosan can suppress potato dry rot caused by Fusarium oxysporum. In this study, the mycelial growth and spore germination of F. oxysporum were significantly inhibited by chitosan, and the pathogenicity of F. oxysporum was reduced after treated by chitosan. Moreover, chitosan could enhance the susceptibility of F. oxysporum to environmental stresses and improve the potato resistance against F. oxysporum. The transcriptome analysis of F. oxysporum with or without chitosan indicated that total 4955 differentially expressed genes (DEGs) were identified, of which 2839 were up-regulated and 2116 were down-regulated. KEGG pathway and GO term analysis showed DEGs were mostly related to protein metabolism, stress tolerance and cell structure. These findings suggested chitosan might be a promising natural fungicide for the potato dry rot caused by F. oxysporum.
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