期刊
FOOD CHEMISTRY
卷 293, 期 -, 页码 263-270出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2019.04.113
关键词
L-Glutamate; Glutamate receptor; Induced resistance; Botrytis cinerea
资金
- National key RD program [2016YFD0401201]
- National Natural Science Foundation of China [31471627]
Gray mold caused by Botrytis cinerea is the most important disease in postharvest tomato fruit. Inducing resistance to fungal pathogens in the harvested fruit and vegetable is a promising approach to control postharvest losses. In the present study, the effect of L-glutamate on induction of resistance to B. cinerea and the underlying mechanisms were investigated. The results indicated that L-glutamate at 100 ppm was effective in reducing the gray mold of tomatoes after inoculation of the pathogen. Gene expressions of nine glutamate receptors, four pathogenesis-related proteins and the content of amino acids were affected by L-glutamate treatment. Furthermore, the metabolites of L-glutamate, including GABA, Met, Lys and Arg, could also induce significant resistance against B. cinerea in tomato fruit. Our findings suggested that L-glutamate treatment may represent a promising method for managing postharvest decay of tomato fruit.
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