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

文献类型： 外文期刊

第一作者： Chen, Wei

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

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

期刊名称：RICE （ 影响因子：5.5； 五年影响因子：5.8 ）

ISSN： 1939-8425

年卷期： 2024 年 17 卷 1 期

页码：

收录情况： SCI

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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