Methionine represses gray mold of tomato by keeping nitric oxide at an appropriate level via ethylene synthesis and signal transduction
文献类型： 外文期刊
作者： Zhang, Qiaocai 1 ; Zhang, Song 1 ; Wu, Bin 2 ; Song, Zunyang 1 ; Shi, Jingying 1 ;
作者机构： 1.Shandong Agr Univ, Univ Shandong, Coll Food Sci & Engn, Key Lab Food Nutr & Hlth, Tai An, Shandong, Peoples R China
2.Xinjiang Acad Agr Sci, Inst Agroprod Storage & Proc, Urumqi, Xinjiang, Peoples R China
3.Xinjiang Acad Agr Sci, Xinjiang Key Lab Proc & Preservat Agr Prod, Urumqi, Xinjiang, Peoples R China
关键词： Tomato; Botrytis cinerea; Methionine; Induced disease resistance; Nitric oxide
期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）
ISSN： 0308-8146
年卷期： 2024 年 461 卷
页码：
收录情况： SCI
摘要： Methionine (Met) can inhibit plant diseases caused by phytopathogens. However, the effect of Met on gray mold resulted from Botrytis cinerea in tomato is still unclear. This study showed 5 mM Met alleviated disease development of gray mold, enhanced chitinase (CHI) and beta-1, 3-glucanase (GNS) activities and the expression of SlCHI, SlGNS, SlPR1 and SlNPR1 in tomatoes, rather than inhibited the growth of B. cinerea directly. Moreover, ethylene biosynthesis and signal transduction before pathogen inoculating were induced by 5 mM Met. Interestingly, Met reduced the nitrosylation levels of ACS4 and ACO6, enhanced the activities of nitric oxide synthase, nitrite reductase (NR) and S-nitrosoglutathione reductase (GSNOR) and the expression of SlNR and SlGSNOR. Tomatoes treated with aminoethoxyvinylglycine and carboxy-PTIO exhibited lower resistance to B. cinerea. These results indicate 5 mM Met promoted ethylene biosynthesis and signal transduction to facilitate NO synthesis and metabolism, enhancing the resistance of tomatoes to B. cinerea.
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