中国农业科学2012，Vol.45Issue(3)：584-589,6.DOI:10.3864/j.issn.0578-1752.2012.03.022
水杨酸对厚皮甜瓜采后病害及苯丙烷代谢的影响
Effect of Salicylic Acid Dipping on Postharvest Diseases and Phenylpropanoid Pathway in Muskmelon Fruits
摘要
Abstract
[Objective] The effects of salicylic acid (SA) dipping on postharvest disease resistance and phenylpropanoid pathway in muskmelon fruit was investigated in this paper. [Method] Muskmelons (Cucumis melo L. Cv.Yujinxiang) were dipped at 4 mmol·L-1 of SA for 10 min. The inhibition effect of SA dipping on the lesion diameter of fruits inoculated with Trichothecium roseum and natural incidence of melons were investigated during storage at room temperature. The key enzyme activities and substances accumulation of phenylpropanoid pathway in fruits were also detected. [Result] SA significantly decreased the lesion diameter of fruits inoculated with T. Roseum, and the natural incidence of fruits during storage at room temperature. The treatment increased the activity of phenylalanine ammonia-lyase (PAL), 4-coumarate: CoA ligase (4CL) and cinnamate-4hydroxylase (C4H) in fruits. The activity of C4H and 4CL was 1.0 and 2.8 times higher in treated fruits than that in the control after 6 days of treatment, and PAL activity was 1.6 times of the control after 10 days of treatment. SA significantly enhanced the content of total phenolic and lignin. The content of lignin and total phenolic was 30.6% and 30.0% higher in treated fruits than that in the control after 4 and 10 days of treatment; however, no significant difference was found in flavanoid content between the treatment and the control. [Conclusion] Postharvest SA treatment could increase the resistance in melon fruits against postharvest diseases by inducing phenylpropanoid pathway.关键词
厚皮甜瓜/水杨酸/苯丙烷途径/采后病害Key words
muskmelon/salicylic acid/phenylpropanoid pathway/postharvest diseases引用本文复制引用
范存斐,毕阳,王云飞,任亚琳,杨志敏,王毅..水杨酸对厚皮甜瓜采后病害及苯丙烷代谢的影响[J].中国农业科学,2012,45(3):584-589,6.基金项目
国家自然科学基金项目(31071835)、高等学校博士学科点专项科研基金项目(1101.02.006.199) （31071835）
