SlMYB72 与 SlTAGL1 相互作用,调控番茄果实角质层的形成。

IF 6.2 1区 生物学 Q1 PLANT SCIENCES
Mengbo Wu, Yuanyi Zhou, Haifeng Ma, Xin Xu, Mingchun Liu, Wei Deng
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引用次数: 0

摘要

角质层是覆盖在番茄表面的第一道物理屏障,在多种应激反应中发挥着重要作用。但目前对角质层形成的分子调控网络还不完全清楚。本研究发现,SlMYB72能与SlTAGL1相互作用,调控番茄果实角质层的形成。下调 SlMYB72 的表达会抑制果实角质层的形成,导致果实角质层厚度降低、采后失水加速以及对灰霉病的易感性增加。RNA 测序分析表明,下调 SlMYB72 基因会降低脂肪酸和角质层代谢相关基因的表达水平。SlMYB72 通过直接与长链酰基-coA 合成酶(SlLACS1)和中链烷烃羟化酶(SlMAH1)的启动子结合来调控角质层的形成。此外,SlMYB72 与 SlTAGL1 相互作用,可增强 SlMYB72 在 SlMAH1 启动子上的转录激活。总之,我们的研究拓展了我们对 SlMYB72 调控角质层形成的认识,并为通过操纵角质层含量延长水果货架期提供了新的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SlMYB72 interacts with SlTAGL1 to regulate the cuticle formation in tomato fruit

The cuticle is the first physical barrier covering the surface of tomatoes and plays an important role in multiple stress responses. But the molecular regulatory networks of cuticle formation are not fully understood. In this study, we found that SlMYB72 can interact with SlTAGL1 to regulate the formation of fruit cuticle in tomato. Downregulating the expression of SlMYB72 inhibits the formation of fruit cuticle, resulting in a reduced fruit cuticle thickness, accelerated postharvest water loss, and increased susceptibility to Botrytis cinerea. RNA sequencing analysis showed that downregulation of the SlMYB72 gene decreased the expression levels of genes related to fatty acid and cuticle metabolism. SlMYB72 regulates the cuticle formation by directly binding to the promoter of long-chain acyl-coA synthetases (SlLACS1) and medium-chain alkane hydroxylase (SlMAH1). Moreover, SlMYB72 interacts with SlTAGL1, which can enhance the transcriptional activation of SlMYB72 on the SlMAH1 promoter. Overall, our study expands our understanding of the regulation of cuticle formation by SlMYB72 and provides new insights into fruit shelf life extension via manipulation of cuticle content.

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来源期刊
The Plant Journal
The Plant Journal 生物-植物科学
CiteScore
13.10
自引率
4.20%
发文量
415
审稿时长
2.3 months
期刊介绍: Publishing the best original research papers in all key areas of modern plant biology from the world"s leading laboratories, The Plant Journal provides a dynamic forum for this ever growing international research community. Plant science research is now at the forefront of research in the biological sciences, with breakthroughs in our understanding of fundamental processes in plants matching those in other organisms. The impact of molecular genetics and the availability of model and crop species can be seen in all aspects of plant biology. For publication in The Plant Journal the research must provide a highly significant new contribution to our understanding of plants and be of general interest to the plant science community.
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