Exogenous melatonin maintains leaf quality of postharvest Chinese flowering cabbage by modulating respiratory metabolism and energy status
文献类型： 外文期刊
作者： Tan, Xiao-li 1 ; Fan, Zhong-qi 3 ; Zeng, Ze-xiang 1 ; Shan, Wei 1 ; Kuang, Jian-fei 1 ; Lu, Wang-jin 1 ; Su, Xin-guo 4 ;
作者机构： 1.South China Agr Univ, Coll Hort,State Key Lab Conservat & Utilizat Subt, Minist Educ,Guangdong Prov Key Lab Postharvest Sc, Guangdong Vegetables Engn Res Ctr,Engn Res Ctr So, Guangzhou 510642, Peoples R China
2.Lingnan Guangdong Lab Modern Agr, Guangzhou 510642, Peoples R China
3.Fujian Agr & Forestry Univ, Coll Food Sci, Inst Postharvest Technol Agr Prod, Key Lab Postharvest Biol Subtrop Special Agr Prod, Fuzhou 350002, Peoples R China
4.Guangdong AIB Polytech, Guangzhou 510507, Peoples R China
5.Xiangtan Univ, Sch Chem Engn, Xiangtan 411105, Peoples R China
6.Guangxi Acad Agr Sci, Sugarcane Res Inst, Key Lab Sugarcane Biotechnol & Genet Improvement, Minist Agr, Nanning 530007, Peoples R China
7.Guangxi Acad Agr Sci, Sugarcane Res Inst, Guangxi Key Lab Sugarcane Genet Improvement, Nanning 530007, Peoples R China
8.Southwest Univ, Coll Resources & Environm, Interdisciplinary Res Ctr Agr Green Dev Yangtze R, Chongqing 400716, Peoples R China
9.Univ Queensland, Queensland Alliance Agr & Food Innovat, St Lucia, Qld 4067, Australia
关键词： Chinese flowering cabbage; Melatonin; Quality; Respiratory metabolism; Energy status
期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：4.303； 五年影响因子：4.765 ）
ISSN： 0925-5214
年卷期： 2021 年 177 卷
页码：
收录情况： SCI
摘要： The efficacy of melatonin on postharvest quality of Chinese flowering cabbage was investigated in this study. Treatment of Chinese cabbage with melatonin significantly delayed leaf yellowing and maintained higher contents of nutrients such as soluble sugars, protein, vitamin C, total flavonoids and phenols during a 7-day storage. Also, melatonin enhanced the activities and expression level of glucose-6-phosphate dehydrogenase (G6PDH) and 6-phosphogluconate dehydrogenase (6-PGDH). Melatonin treatment decreased tissue weight loss, respiration rate, activities of phosphohexose isomerase (PHI), succinate dehydrogenase (SDH), cytochrome C oxidase (CCO), and ascorbic acid oxidase (AAO) and the expression of their corresponding genes. Additionally, melatonintreated leaves maintained high energy status, as evidenced by higher total ATPase and nicotinamide adenine dinucleotide kinase (NADK) activities, higher energy charge level, adenosine triphosphate (ATP) and adenosine diphosphate (ADP) contents, lower level of adenosine monophosphate (AMP) and transcript abundance of respiratory enzymes. These findings collectively suggest that melatonin maintains leaf quality of postharvest Chinese flowering cabbage might be, at least in part, due to the reduced ratio of Embden-Meyerhof-Parnas pathway (EMP), tricarboxylic acid (TCA) cycle, and cytochrome pathway (CCP), a relatively higher level of pentose phosphate pathway (PPP) and energy status.
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