Positive Regulation of the Transcription of AchnKCS by a bZIP Transcription Factor in Response to ABA-Stimulated Suberization of Kiwifruit
文献类型： 外文期刊
作者： Han, Xueyuan 1 ; Mao, Linchun 2 ; Lu, Wenjing 4 ; Wei, Xiaopeng 2 ; Ying, Tiejin 2 ; Luo, Zisheng 2 ;
作者机构： 1.Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Zhejiang, Peoples R China
2.Zhejiang Univ, Key Lab Agroprod Postharvest Handling, Zhejiang Key Lab AgroFood Proc, Coll Biosyst Engn & Food Sci,Minist Agr & Rural A, Hangzhou 310058, Zhejiang, Peoples R China
3.Zhejiang Univ, Ningbo Res Inst, Ningbo 315100, Zhejiang, Peoples R China
4.Zhejiang Acad Agr Sci, Inst Food Sci, Hangzhou 310021, Zhejiang, Peoples R China
关键词： beta-ketoacyl-coenzyme A synthases (KCSs); bZIP; abscisic acid (ABA); kiwifruit; suberization
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 26 期
页码：
收录情况： SCI
摘要： Wound-induced suberization is an essentially protective healing process for wounded fruit to reduce water loss and microbial infection. It has been demonstrated that abscisic acid (ABA) could promote wound suberization, but the molecular mechanism of ABA regulation remains little known. In this study, the transcript level of Achn030011 (designated as AchnKCS), coding a beta-ketoacyl-coenzyme A synthase (KCS) involved in suberin biosynthesis, was found to be significantly upregulated by ABA in wounded kiwifruit. A bZIP transcription factor (Achn270881), a possible downstream transcription factor in the ABA signaling pathway, was screened and designated as AchnbZIP12 according to its homology with related Arabidopsis transcription factors. A yeast one-hybrid assay demonstrated that AchnbZIP12 could interact with the AchnKCS promoter. Furthermore, significant trans-activation of AchnbZIP12 on AchnKCS was verified. The transcript level of AchnbZIP12 was also upregulated upon treatment with ABA. These results imply that AchnbZIP12 acts as a positive regulator in ABA-mediated AchnKCS transcription during wound suberization of kiwifruit.
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