Abscisic Acid Signaling in the Regulation of Postharvest Physiological Deterioration of Sliced Cassava Tuberous Roots
文献类型： 外文期刊
作者： Yan, Yan 1 ; Zhao, Sihan 1 ; Ye, Xiaoxue 1 ; Tian, Libo 3 ; Shang, Sang 3 ; Tie, Weiwei 1 ; Zeng, Liwang 5 ; Zeng, Liming 5 ; Yang, Jinghao 1 ; Li, Meiying 1 ; Wang, Yu 1 ; Xie, Zhengnan 1 ; Hu, Wei 1 ;
作者机构： 1.Inst Trop Biosci & Biotechnol, Chinese Acad Trop Agr Sci, Hainan Key Lab Biosafety Monitoring & Mol Breeding, Key Lab Biol & Genet Resources Trop Crops, Haikou 571101, Peoples R China
2.Chinese Acad Trop Agr Sci, Hainan Inst Trop Agr Resources, Hainan Key Lab Protect & Utilizat Trop Bioresource, Haikou 571101, Peoples R China
3.Hainan Univ, Sch Hort, Sch Life Sci, Haikou 570228, Peoples R China
4.Chinese Acad Trop Agr Sci, Sanya Res Inst, Sanya 572025, Peoples R China
5.Chinese Acad Trop Agr Sci, Inst Sci & Tech Informat, Haikou 571101, Peoples R China
关键词： abscisic acid; postharvest physiological deterioration; cassava tuberous roots
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.895； 五年影响因子：6.048 ）
ISSN： 0021-8561
年卷期：
页码：
收录情况： SCI
摘要： Phytohormone abscisic acid (ABA) influences the shelf life of fruit, vegetables, and tubers after harvest. However, little is known about the core signaling module involved in ABA's control of the postharvest physiological process. Exogenous ABA alleviated postharvest physiological deterioration (PPD) symptoms of sliced cassava tuberous roots, increased endogenous ABA levels, and reduced endogenous H2O2 content. The specific ABA signaling module during the PPD process was identified as MePYL6-MePP2C16-MeSnRK2.1-MebZIP5/34. MebZIP5/MebZIP34 directly binds to and activates the promoters of MeGRX6/MeMDAR1 through ABRE elements. Exogenous ABA significantly induced the expression of genes involved in this module, glutaredoxin content, and monodehydroascorbate reductase activity. We presented a hypothesis suggesting that MePYL6- MePP2C16-MeSnRK2.1-MebZIP5/34-MeGRX6/MeMDAR1 is involved in ABA-induced antioxidative capacity, thus alleviating PPD symptoms in cassava tuberous roots. The identification of the specific signaling module involved in ABA's control of PPD provides a basis and potential targets for extending the shelf life of cassava tuberous roots.
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