Young Leaf Chlorosis 1, a chloroplast-localized gene required for chlorophyll and lutein accumulation during early leaf development in rice

文献类型: 外文期刊

第一作者: Zhou, Kunneng

作者: Zhou, Kunneng;Ren, Yulong;Lv, Jia;Wang, Yihua;Liu, Feng;Zhou, Feng;Zhao, Shaolu;Chen, Saihua;Peng, Cheng;Jiang, Ling;Wan, Jianmin;Zhang, Xin;Guo, Xiuping;Cheng, Zhijun;Wang, Jiulin;Wu, Fuqing;Wan, Jianmin

作者机构:

关键词: Chlorophyll;Chloroplast;Lutein;Rice (Oryza sativa);YLC1 gene

期刊名称:PLANTA ( 影响因子:4.116; 五年影响因子:4.316 )

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收录情况: SCI

摘要: Chlorophyll (Chl) and lutein are the two most abundant and essential components in photosynthetic apparatus, and play critical roles in plant development. In this study, we characterized a rice mutant named young leaf chlorosis 1 (ylc1) from a 60Co-irradiated population. Young leaves of the ylc1 mutant showed decreased levels of Chl and lutein compared to those of wild type, and transmission electron microscopy analysis revealed that the thylakoid lamellar structures were obviously loosely arranged. Whereas, the mutant turns green gradually and approaches normal green at the maximum tillering stage. The Young Leaf Chlorosis 1 (YLC1) gene was isolated via map-based cloning and identified to encode a protein of unknown function belonging to the DUF3353 superfamily. Complementation and RNA-interference tests confirmed the role of the YLC1 gene, which expressed in all tested rice tissues, especially in the leaves. Real-time PCR analyses showed that the expression levels of the genes associated with Chl biosynthesis and photosynthesis were affected in ylc1 mutant at different temperatures. In rice protoplasts, the YLC1 protein displayed a typical chloroplast location pattern. The N-terminal 50 amino acid residues were confirmed to be necessary and sufficient for chloroplast targeting. These data suggested that the YLC1 protein may be involved in Chl and lutein accumulation and chloroplast development at early leaf development in rice.

分类号: Q94

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