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研究揭示柑橘属植物油腺发育和精油生物合成的分子调控
作者:小柯机器人 发布时间:2024/2/10 22:05:42

华中农业大学张飞等研究人员合作揭示柑橘属植物油腺发育和精油生物合成的分子调控。该项研究成果发表在2024年2月9日出版的《科学》杂志上。

研究人员揭示了柑橘油腺形成的分子框架。利用基因图谱和基因组编辑,研究人员证明了这一过程需要叶片锯齿的关键调控因子Late MERISTEM IDENTITY1(LMI1)。LMI1启动子中一个保守的GCC 盒元件招募DORNROSCHEN-like(DRNL)进行转录激活。DRNL-LMI1级联触发MYC5激活,促进油腺的发育和精油的生物合成。

这些研究结果突显了叶形基因内部的顺式调控分化,从而推动了新型功能组织的形成。

据悉,陆生植物的分泌结构是各种次级代谢产物的贮藏库。其中,芸香科植物的分泌腔因含有用途广泛的精油而引人注目。然而,分泌腔发育的分子基础尚不清楚。

附:英文原文

Title: Molecular regulation of oil gland development and biosynthesis of essential oils in Citrus spp.

Author: Hongxing Wang, Jie Ren, Shiyun Zhou, Yaoyuan Duan, Chenqiao Zhu, Chuanwu Chen, Ziyan Liu, Qingyou Zheng, Shu Xiang, Zongzhou Xie, Xia Wang, Lijun Chai, Junli Ye, Qiang Xu, Wenwu Guo, Xiuxin Deng, Fei Zhang

Issue&Volume: 2024-02-09

Abstract: Secretory structures in terrestrial plants serve as reservoirs for a variety of secondary metabolites. Among these, the secretory cavity of the Rutaceae family is notable for containing essential oils with a wide range of applications. However, the molecular basis underlying secretory cavity development is unknown. Here, we reveal a molecular framework for Citrus oil gland formation. Using genetic mapping and genome editing, we demonstrated that this process requires LATE MERISTEM IDENTITY1 (LMI1), a key regulator of leaf serration. A conserved GCC box element of the LMI1 promoter recruits DORNROSCHEN-like (DRNL) for transcriptional activation. This DRNL-LMI1 cascade triggers MYC5 activation, facilitating the development of oil glands and the biosynthesis of essential oils. Our findings spotlight cis-regulatory divergence within leaf shape genes, propelling novel functional tissue formation.

DOI: adl2953

Source: https://www.science.org/doi/10.1126/science.adl2953

期刊信息
Science:《科学》,创刊于1880年。隶属于美国科学促进会,最新IF:63.714
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