Effect of brassinolide on energy status and proline metabolism in postharvest bamboo shoot during chilling stress

被引：138
作者：
Liu, Zhanli [1 ,2 ]
Li, Li [1 ]
Luo, Zisheng [1 ]
Zeng, Fangfang [1 ]
Jiang, Lei [1 ]
Tang, Kaichen [1 ]
机构：
[1] Zhejiang Univ, Coll Biosyst Engn & Food Sci, Zhejiang Key Lab Agrofood Proc, Hangzhou 310058, Zhejiang, Peoples R China
[2] Shandong Univ Technol, Sch Agr & Food Engn, Zibo 255049, Shandong, Peoples R China
来源：
POSTHARVEST BIOLOGY AND TECHNOLOGY | 2016年 / 111卷
基金：
中国国家自然科学基金;
关键词：
Bamboo shoot; Brassinolide; Chilling injury; Energy status; Proline metabolism; MEMBRANE INTEGRITY; METHYL JASMONATE; INJURY; FRUIT; TOLERANCE; ANTIOXIDANT; L; BRASSINOSTEROIDS; ACCUMULATION; SENESCENCE;
D O I：
10.1016/j.postharvbio.2015.09.016
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
In this study, the effects ofbrassinolide treatment on chilling injury, energy status and proline metabolism in postharvest bamboo shoots (Phyllostachys praecox f. prevemalis) at 1 degrees C were investigated. It was shown that chilling injury of bamboo shoots during 42-day storage was effectively reduced by brassinolide treatment at the concentration of 0.5 mu M. In terms of energy status, brassinolide treatment significantly inhibited the increase of electrolyte leakage and the accumulation of malondialdehyde. Meanwhile, brassinolide treatment markedly retarded the decline of ATP content and maintained higher energy charge. Enzyme activities of energy metabolism including Fr -ATPase, Ca2+-ATPase, succinate dehydrogenase (SDH) and cytochrome C oxidase (CCO) were significantly enhanced by brassinolide treatment. Bamboo shoots treated by bras s ino lide treatment promoted Al-pyrro line-5-carboxylate syntheta se (P5CS) and ornithine-8-aminotransferase (OAT) activity and inhibited proline dehydrogenase (PDH) activity, which elevated proline accumulation. These results suggest that the alleviation in chilling injury by brasinolide may be caused by enhanced enzyme activities related to energy and proline metabolism. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：240 / 246
页数：7
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