Histone Deacetylase CpHDA3 Is Functionally Associated with CpERF9 in Suppression of CpPME1/2 and CpPG5 Genes during Papaya Fruit Ripening
文献类型： 外文期刊
作者： Fu, Changchun 1 ; Chen, Hangjun 2 ; Gao, Haiyan 2 ; Han, Yanchao 2 ;
作者机构： 1.Zhejiang Shuren Univ, Coll Biol & Environm Engn, Hangzhou 310015, Zhejiang, Peoples R China
2.Zhejiang Acad Agr Sci, Key Lab Fruits & Vegetables Postharvest & Proc Te, Key Lab Postharvest Handling Fruits, Key Lab China Light Ind,Food Sci Inst,Minist Arg, Hangzhou 310021, Zhejiang, Peoples R China
关键词： papaya; histone deacetylase; CpERF9; fruit ripening and softening
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）
ISSN： 0021-8561
年卷期： 2019 年 67 卷 32 期
页码：
收录情况： SCI
摘要： Histone deacetylase (HDAC) performs important functions in plant growth and development, including fruit ripening. As a complex biological process, fruit ripening involves the histone acetylation modification of ripening-associated genes. Histone deacetylase genes (HDACs) have been well studied in Arabidopsis and rice, but the biological functions of HDACs in papaya are poorly understood. In the present work, three CpHDACs, belonging to the RPD3/HDA1 subfamily, were identified from papaya and named as CpHDA1, CpHDA2, and CpHDA3. CpHDA1 and CpHDA2 were induced by propylene, while CpHDA3 was propylene-repressed. Moreover, CpHDA3 protein could physically interact with CpERF9 and enhance the transcriptional repression activities of CpERF9 to downstream genes CpPME1, CpPME2 and CpPG5. Histone acetylation levels of CpPME1 and CpPG5 were increased during fruit ripening. Taken together, these results suggested that CpERF9 recruits CpHDA3 to form a histone deacetylase repressor complex to mediate pectin methylesterase and polygalacturonase genes expression during papaya fruit ripening and softening.
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