数字农科院2.0

YGL3 Encoding an IPP and DMAPP Synthase Interacts with OsPIL11 to Regulate Chloroplast Development in Rice

文献类型： 外文期刊

作者： Wei Chen;Liqun Tang;Qianlong Li;Yicong Cai;Shakeel Ahmad;Yakun Wang;Shengjia Tang;Naihui Guo;Xiangjin Wei;Shaoqing Tang;Gaoneng Shao;Guiai Jiao;Lihong Xie;Shikai Hu;Zhonghua Sheng;Peisong Hu

作者机构：

关键词： Chloroplast Development;Enzyme Activity;Isopentenyl Diphosphate Content;Isoprenoids;MEP Pathway;Oryza sativa L;OsPIL11;ygl3

期刊名称： Rice

ISSN： 1939-8425

年卷期： 2024 年 17 卷 1 期

页码：

收录情况： SCIE（2024版）

摘要： As the source of isoprenoid precursors, the plastidial methylerythritol phosphate (MEP) pathway plays an essential role in plant development. Here, we report a novel rice (Oryza sativa L.) mutant ygl3 (yellow-green leaf3) that exhibits yellow-green leaves and lower photosynthetic efficiency compared to the wild type due to abnormal chloroplast ultrastructure and reduced chlorophyll content. Map-based cloning showed that YGL3, one of the major genes involved in the MEP pathway, encodes 4-hydroxy-3-methylbut-2-enyl diphosphate reductase, which is localized in the thylakoid membrane. A single base substitution in ygl3 plants resulted in lower 4-hydroxy-3-methylbut-2-enyl diphosphate reductase activity and lower contents of isopentenyl diphosphate (IPP) compared to the wild type. The transcript levels of genes involved in the syntheses of chlorophyll and thylakoid membrane proteins were significantly reduced in the ygl3 mutant compared to the wild type. The phytochrome interacting factor-like gene OsPIL11 regulated chlorophyll synthesis during the de-etiolation process by directly binding to the promoter of YGL3 to activate its expression. The findings provides a theoretical basis for understanding the molecular mechanisms by which the MEP pathway regulate chloroplast development in rice.

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