烯丙苯噻唑激活苯丙烷类途径以增强梨果实对链格孢的抗性。
Acibenzolar-S-methyl activates phenylpropanoid pathway to enhance resistance against Alternaria alternata in pear fruit.
作者信息
Guo Yan, Li Xue, Li Canying, Jinyue Ruxin, Xu Hengping, Ge Yonghong
机构信息
College of Food Science and Engineering, Bohai University, Jinzhou, PR China.
National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou, PR China.
出版信息
J Sci Food Agric. 2023 Jan 30;103(2):829-836. doi: 10.1002/jsfa.12194. Epub 2022 Sep 13.
BACKGROUND
Alternaria alternata is a causal agent of black spot rot of pear fruit after harvest. Acibenzolar-S-methyl (ASM) has been shown to be a potential elicitor of tolerance in several horticultural products. This work was performed to research the influence of ASM on black spot rot of Docteur Jules Guyot pears and vital enzyme activity and gene expression in the phenylpropanoid pathway.
RESULTS
ASM remarkably decreased the lesion diameter of A. alternata-inoculated pears. ASM also increased phenylalanine ammonialyase, cinnamate 4-hydroxylase, cinnamyl alcohol dehydrogenase, peroxidase, polyphenol oxidase activities and gene expression, and enhanced 4-coumarate/coenzyme A ligase activity in pears. Moreover, ASM improved the content of phenylalanine, total phenolic compounds, caffeic acid, flavonoids, anthocyanin and lignin in pears.
CONCLUSION
ASM could modulate vital enzyme activity and gene expression in the phenylpropanoid pathway to accelerate metabolite synthesis, thereby enhancing resistance against A. alternata in pears. © 2022 Society of Chemical Industry.
背景
链格孢是梨采后果实黑斑病的病原菌。烯丙苯噻唑已被证明是几种园艺产品中潜在的诱导抗性物质。本研究旨在探讨烯丙苯噻唑对朱尔斯·居约博士梨黑斑病的影响以及对苯丙烷类代谢途径中关键酶活性和基因表达的影响。
结果
烯丙苯噻唑显著降低了接种链格孢的梨的病斑直径。烯丙苯噻唑还提高了梨中苯丙氨酸解氨酶、肉桂酸4-羟化酶、肉桂醇脱氢酶、过氧化物酶、多酚氧化酶的活性和基因表达，并增强了4-香豆酸/辅酶A连接酶的活性。此外，烯丙苯噻唑提高了梨中苯丙氨酸、总酚类化合物、咖啡酸、黄酮类化合物、花青素和木质素的含量。
结论
烯丙苯噻唑可调节苯丙烷类代谢途径中的关键酶活性和基因表达，加速代谢产物合成，从而增强梨对链格孢的抗性。© 2022化学工业协会。
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