Putrescine treatment reduces yellowing during senescence of broccoli (Brassica oleracea L. var. italica)
文献类型： 外文期刊
作者： Zheng, Qiuli 1 ; Zuo, Jinhua 1 ; Gu, Sitong 1 ; Gao, Lipu 1 ; Hu, Wenzhong 2 ; Wang, Qing 1 ; Jiang, Aili 2 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Key Lab Vegetable Postharvest Treatment,Key Lab F, Key Lab Urban Agr North,Minist Agr,Beijing Vegeta, Key Lab Biol & Genet Improvement Hort Crops North, Beijing 110097, Peoples R China
2.Dalian Minzu Univ, Coll Life Sci, Key Lab, Minist Educ, Dalian 116600, Peoples R China
关键词： Broccoli; Yellowing; Chlorophyll-degradation relative gene expression; Antioxidant enzymes
期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：5.537； 五年影响因子：5.821 ）
ISSN： 0925-5214
年卷期： 2019 年 152 卷
页码：
收录情况： SCI
摘要： Broccoli undergoes yellowing very quickly in storage, which impacts its' quality and economic value. The current study examined the ability of putrescine to inhibit postharvest yellowing of broccoli florets. Broccoli heads were dipped in a 0.25 mmol L-1 solution of putrescine for 10 min, air dried, and then stored at 20 degrees C in the dark. Results indicated that, relative to the untreated control, putrescine treatment effectively suppressed changes in fruit color from green to yellow, reduced the degradation of chlorophyll, decreased electrolyte leakage, inhibited the accumulation of malondialdehyde, and maintained the enzyme activity and gene expression of peroxidase, catalase, and ascorbate peroxidase. The relative expression of chlorophyllase. (BoCLH1) and chlorophyllase. (BoCLH3) was enhanced while the relative expression of chlorophyllase. (BoCLH2), pheophorbide a oxygenase (BoPAO), and pheophytinase (BoPPH) was reduced by putrescine. The data clearly indicate that putrescine reduces the yellowing of broccoli florets and may represent an effective approach for reducing postharvest losses in broccoli.
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