Four HD-ZIPs are involved in banana fruit ripening by activating the transcription of ethylene biosynthetic and cell wall-modifying genes.,Plant Cell Reports

当前位置： X-MOL 学术 › Plant Cell Rep. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Four HD-ZIPs are involved in banana fruit ripening by activating the transcription of ethylene biosynthetic and cell wall-modifying genes.
Plant Cell Reports ( IF 6.2 ) Pub Date : 2019-11-29 , DOI: 10.1007/s00299-019-02495-x
Ying-Ying Yang ₁ , Wei Shan ₁ , Jian-Fei Kuang ₁ , Jian-Ye Chen ₁ , Wang-Jin Lu ₁

Affiliation

Four MaHDZs are possibly involved in banana fruit ripening by activating the transcription of genes related to ethylene biosynthesis and cell wall degradation, such as MaACO5, MaEXP2, MaEXPA10, MaPG4 and MaPL4. The homeodomain-leucine zipper (HD-ZIP) proteins represent plant-specific transcription factors, which contribute to various plant physiological processes. However, little information is available regarding the association of HD-ZIPs with banana fruit ripening. In this study, we identified a total of 96 HD-ZIP genes in banana genome, which were divided into four different groups consisting of 35, 31, 9 and 21 members in the I, II, III and IV subfamilies, respectively. The expression patterns of MaHDZ genes during fruit ripening showed that MaHDZI.19, MaHDZI.26, MaHDZII.4 and MaHDZII.7 were significantly up-regulated in the ripening stage and thus suggested to be potential regulators of banana fruit ripening. Furthermore, MaHDZI.19, MaHDZI.26, MaHDZII.4 and MaHDZII.7 were found to localize exclusively in the nucleus and exhibit transcriptional activation capacities. Importantly, MaHDZI.19, MaHDZI.26, MaHDZII.4 and MaHDZII.7 stimulated the transcription of several ripening-related genes including MaACO5 related to ethylene biosynthesis, MaEXP2, MaEXPA10, MaPG4 and MaPL4 were associated with cell wall degradation, through directly binding to their promoters. Taken together, our findings expand the functions of HD-ZIP transcription factors and identify four MaHDZs likely involved in regulating banana fruit ripening by activating the expression of genes related to ethylene biosynthesis and cell wall modification, which may have potential application in banana molecular breeding.

更新日期：2019-11-30

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南

全部期刊列表>>