Induction of Low Temperature Tolerance in Wheat by Pre-Soaking and Parental Treatment with Melatonin

文献类型： 外文期刊

第一作者： Zhang, Hua

作者： Zhang, Hua;Feng, Guozhong;Gao, Qiang;Zhang, Hua;Liu, Lei;Li, Xiangnan;Wang, Zongshuai

作者机构：

关键词： melatonin; Triticum aestivum; low temperature; germination; carbohydrate metabolism

期刊名称：MOLECULES （ 影响因子：4.411； 五年影响因子：4.587 ）

ISSN：

年卷期： 2021 年 26 卷 4 期

页码：

收录情况： SCI

摘要： Low temperatures seriously depress germination and seedling establishment in wheat and it is of great significance to explore approaches to improve wheat tolerance to low temperatures. In this study, the effects of seed pre-soaking and parental treatment with melatonin on seed germination and low temperature tolerance during the early growing stage in wheat were studied. The results showed that pre-soaking with melatonin increased the germination rate, improved antioxidant capacity and accelerated starch degradation under low temperature, which alleviated low temperature-induced damage to the chloroplasts in coleoptiles of wheat seedlings. Parental melatonin treatment during grain filling stage significantly decreased the grain weight. Seeds from parental melatonin-treated plants showed higher germination rates and higher antioxidant enzyme activity than the control seeds under low temperature. In addition, parental treatment with melatonin modulated the activities of carbohydrate metabolism enzymes, which contributes to enhanced low temperature tolerance in wheat offspring. It was suggested that both seed pre-soaking and parental treatment with melatonin could be the effective approaches for low temperature tolerance induction in wheat.

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