Transcriptional regulation of KCS gene by bZIP29 and MYB70 transcription factors during ABA-stimulated wound suberization of kiwifruit (Actinidia deliciosa)
文献类型： 外文期刊
作者： Han, Xueyuan 1 ; Wei, Xiaopeng 2 ; Lu, Wenjing 2 ; Wu, Qiong 5 ; Mao, Linchun 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, Peoples R China
3.Zhengzhou Univ Light Ind, Coll Food & Bioengn, Zhengzhou 450002, Henan, Peoples R China
4.Zhejiang Acad Agr Sci, Inst Food Sci, Hangzhou 310021, Peoples R China
5.Henan Univ Technol, Coll Food Sci & Engn, Zhengzhou 450001, Peoples R China
6.Zhejiang Univ, Ningbo Res Inst, Ningbo 315100, Peoples R China
关键词： Suberization; KCS; Transcriptional regulation; Abscisic acid
期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.26； 五年影响因子：5.761 ）
ISSN： 1471-2229
年卷期： 2022 年 22 卷 1 期
页码：
收录情况： SCI
摘要： Background Our previous study has demonstrated that the transcription of AchnKCS involved in suberin biosynthesis was up-regulated by exogenous abscisic acid (ABA) during the wound suberization of kiwifruit, but the regulatory mechanism has not been fully elucidated. Results Through subcellular localization analysis in this work, AchnbZIP29 and AchnMYB70 transcription factors were observed to be localized in the nucleus. Yeast one-hybrid and dual-luciferase assay proved the transcriptional activation of AchnMYB70 and transcriptional suppression of AchnbZIP29 on AchnKCS promoter. Furthermore, the transcription level of AchnMYB70 was enhanced by ABA during wound suberization of kiwifruit, but AchnbZIP29 transcription was reduced by ABA. Conclusions Therefore, it was believed that ABA enhanced the transcriptional activation of AchnMYB70 on AchnKCS by increasing AchnMYB70 expression. On the contrary, ABA relieved the inhibitory effect of AchnbZIP29 on transcription of AchnKCS by inhibiting AchnbZIP29 expression. These results gave further insight into the molecular regulatory network of ABA in wound suberization of kiwifruit.
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