Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China) of Ministry of Agriculture and Rural Affairs, Key Laboratory of Urban Agriculture (North) of Ministry of Agriculture and Rural Affairs, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China; College of Life Sciences, Dalian Minzu University; Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian 116600, China.
Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China) of Ministry of Agriculture and Rural Affairs, Key Laboratory of Urban Agriculture (North) of Ministry of Agriculture and Rural Affairs, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China.
Food Chem. 2020 Jul 30;319:126561. doi: 10.1016/j.foodchem.2020.126561. Epub 2020 Mar 6.
The effect of simulated transport vibration on the quality of broccoli and the ability of methyl jasmonate (MeJA) to ameliorate vibration damage in broccoli were investigated. Results indicated that transport injury, simulated by vibrational stress, promoted the deterioration in broccoli quality during subsequent storage. Treatment of broccoli with methyl jasmonate (MeJA), however, effectively ameliorated the impact of vibrational injury, maintained the appearance quality and delayed the yellowing and senescence of florets after simulated transportation stress. The effect of the MeJA may be related to of its ability to suppress the accumulation of reactive oxygen species, enhance vitamin C content, and induce antioxidant gene expression and enzyme activity, as well as suppress chlorophyll-degrading enzyme activity and gene expression. Overall, the MeJA treatment inhibited the adverse physiological changes that occur in broccoli as a result of vibrational and mechanical injury. Thus, MeJA has the potential to be used to decrease stress-induced reductions in the postharvest quality of horticultural crops that occur during transport and storage, thus, prolonging their shelf life.
研究了模拟运输振动对西兰花品质的影响，以及茉莉酸甲酯（MeJA）改善西兰花振动损伤的能力。结果表明，振动应力模拟的运输损伤促进了西兰花在随后储存过程中品质的恶化。然而，用茉莉酸甲酯（MeJA）处理西兰花可以有效改善振动损伤的影响，保持外观品质，并延缓模拟运输应激后花椰菜的黄化和衰老。MeJA 的作用可能与其抑制活性氧积累、提高维生素 C 含量、诱导抗氧化基因表达和酶活性以及抑制叶绿素降解酶活性和基因表达的能力有关。总的来说，MeJA 处理抑制了西兰花因振动和机械损伤而产生的不良生理变化。因此，MeJA 有可能用于减少运输和储存过程中园艺作物因胁迫引起的采后品质下降，从而延长其货架期。
