Chitosan oligosaccharides induced chilling resistance in cucumber fruit and associated stimulation of antioxidant and HSP gene expression
Chitosan oligosaccharides induced chilling resistance in cucumber fruit and associated stimulation of antioxidant and HSP gene expression
复制标题
壳寡糖诱导黄瓜果实抗冷性以及相关的抗氧化剂和 HSP 基因表达刺激
DOI：
10.1016/j.scienta.2020.109187
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发表时间：
2020-04-05
影响因子：
4.3
通讯作者：
Li, Yongxin
中科院分区：
文献类型：
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作者：
Ru, Lei;Jiang, Lingfeng;Li, Yongxin
黄瓜(Cucumis sativus L.)水果容易受到冷害。研究了1%壳低聚糖(COS)溶液对黄瓜果实采后冷害的抑制作用及其对冷害相关生化和分子因子的影响。结果表明，4℃冷藏前的COS处理减少了黄瓜的点蚀和腐烂，抑制了膜脂氧化，增加了SOD、GR、APX、CAT、HSP45.9和HSP70基因的表达。鉴于抗氧化系统和HSPs在保护植物免受胁迫伤害中的关键作用，我们认为COS刺激抗氧化剂和HSP基因的表达有助于提高黄瓜的耐冷性。
Cucumber (Cucumis sativus L.) fruit is susceptible to chilling injury. The effect of postharvest dipping of cucumber fruit in 1 % chitosan oligosaccharides (COS) solution was examined for its inhibition of chilling symptoms and effects on biochemical and molecular factors associated with chilling injury. Results showed that COS treatment of cucumbers before cold storage at 4 degrees C reduced pitting and decay, suppressed membrane lipid oxidation, and increased expression of SOD, GR, APX, CAT, HSP45.9 and HSP70 genes. In view of the critical role of antioxidant system and HSPs in protecting plants from stress induced damage, we suggest that the stimulation of antioxidant and HSP gene expression by COS contributed to enhanced chilling tolerance in cucumbers.