Abscisic acid and reactive oxygen species were involved in slightly acidic electrolyzed water-promoted seed germination in watermelon
文献类型： 外文期刊
作者： Wu, Xue 1 ; Wu, Cuinan 1 ; Bian, Zhonghua 3 ; Ye, Zhangying 4 ; Meng, Lili 1 ; Xia, Liru 1 ; Bao, Encai 1 ; Cao, Kai 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Key Lab Agr Engn Middle & Lower Reaches Yangtze R, Agr Minist, Nanjing 210014, Jiangsu, Peoples R China
2.Jiangsu Univ, Sch Agr Engn, Zhenjiang 212013, Jiangsu, Peoples R China
3.Chinese Acad Agr Sci, Inst Urban Agr, Chengdu 610299, Sichuan, Peoples R China
4.Zhejiang Univ, Sch Biosyst Engn & Food Sci, Hangzhou 310058, Zhejiang, Peoples R China
关键词： Slightly Acidic Electrolyzed Water; Seed Germination; Abscisic Acid; Reactive Oxygen Species
期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.342； 五年影响因子：4.342 ）
ISSN： 0304-4238
年卷期： 2022 年 291 卷
页码：
收录情况： SCI
摘要： Seed germination is a vital process in seedling stage. The delayed seed germination and irregular emergence frequently occur in watermelon. It is critical to exploit technologies for promoting seed germination. This study aims to explore the effects of slightly acidic electrolyzed water (SAEW) on the seed germination of watermelon. The results showed that SAEW significantly improved the germination indexes and caused a mass of changes to nutrient substances and enzymatic activities in watermelon seeds. In addition, SAEW treatment decreased abscisic acid (ABA) contents, while increased gibberellin (GA) contents of watermelon seeds by regulating the gene expressions of metabolic related enzymes. Thereinto, SAEW remarkably upregulated the transcriptional level of CYP707A1 and CYP707A2 involved in ABA catabolism, which inhibited the accumulation of ABA. Moreover, SAEW could inhibit reactive oxygen species (ROS) accumulation in seeds and improve the seed germination which was identical to the effect of DMTU (dimethyl thiourea, ROS inhibitor) on the seed germination. In addition, the expressions of RbohC and RbohD involved in ROS accumulation were notably depressed by SAEW. This study demonstrated that exogenous SAEW could inhibit the accumulation of ABA content and decrease the accumulation of ROS, which finally improves the germination ability of watermelon seeds.
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