A Comprehensive Analysis of Physiologic and Hormone Basis for the Difference in Room-Temperature Storability between 'Shixia' and 'Luosanmu' Longan Fruits
文献类型： 外文期刊
作者： Long, Libing 1 ; Lai, Tingting 1 ; Han, Dongmei 2 ; Lin, Xiaolan 1 ; Xu, Jianhang 1 ; Zhu, Difa 1 ; Guo, Xiaomeng 1 ; Lin, Yuqiong 1 ; Pan, Fengyi 1 ; Wang, Yihang 1 ; Lai, Ziying 1 ; Du, Xinxin 1 ; Fang, Di 1 ; Shuai, Liang 3 ; Wu, Zhenxian 1 ; Luo, Tao 1 ;
作者机构： 1.South China Agr Univ, Coll Hort, Guangdong Prov Key Lab Postharvest Sci Fruits & V, Minist Educ,Engn Res Ctr Southern Hort Prod Prese, Guangzhou 510642, Peoples R China
2.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Key Lab South Subtrop Fruit Biol & Genet Resource, Minist Agr, Guangzhou 510640, Peoples R China
3.Hezhou Univ, Coll Food & Biol Engn, Inst Food Sci & Engn Technol, Hezhou 542899, Peoples R China
关键词： longan (Dimocarpus longan Lour.) fruit; pericarp browning; aril breakdown; ROS scavenging system; abscisic acid (ABA); methyl jasmonate (MeJA); salicylic acid (SA)
期刊名称：PLANTS-BASEL （ 影响因子：4.658； 五年影响因子：4.827 ）
ISSN：
年卷期： 2022 年 11 卷 19 期
页码：
收录情况： SCI
摘要： Although the effects of phytohormones (mainly salicylic acid) on the storability of longan fruit have been reported, the relationship between postharvest hormone variation and signal transduction and storability remains unexplored. The basis of physiology, biochemistry, hormone content and signalling for the storability difference at room-temperature between 'Shixia' and 'Luosanmu' longan fruit were examined. 'Luosanmu' longan exhibited faster pericarp browning, aril breakdown and rotting during storage. 'Luosanmu' pericarp exhibited higher malondialdehyde but faster decreased total phenolics, flavonoid, glutathione, vitamin C, catalase activity and gene expression. Higher H2O2 and malondialdehyde but lower glutathione, glutathione-reductase and peroxidase activities, while higher activities and gene expressions of polygalacturonase, beta-galactosidase and cellulose, lower covalent-soluble pectin, cellulose and hemicellulose but higher water-soluble pectin were observed in 'Luosanmu' aril. Lower abscisic acid and methyl jasmonate but higher expressions of LOX2, JAZ and NPR1 in pericarp, while higher abscisic acid, methyl jasmonate and salicylic acid together with higher expressions of ABF, JAZ, NPR1 and PR-1 in 'Luosanmu' aril were observed. In conclusion, the imbalance between the accumulation and scavenging of active oxygen in 'Luosanmu' longan might induce faster lipid peroxidation and senescence-related hormone signalling and further the polymerization of phenolics in pericarp and polysaccharide degradation in aril.
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