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SCL, Encoding a Chloroplast Signal Recognition Particle Receptor, Affects Chlorophyll Synthesis and Chloroplast Development in Rice

文献类型: 外文期刊

作者: Ye, Jing 1 ; Ye, Shenghai 1 ; Zhai, Rongrong 1 ; Wu, Mingming 1 ; Yu, Faming 1 ; Zhu, Guofu 1 ; Zhang, Xiaoming 1 ;

作者机构: 1.Zhejiang Acad Agr Sci, Inst Crop & Nucl Technol Utilizat, Hangzhou 310021, Peoples R China

关键词: Chlorophyll synthesis; Chloroplast development; LHCPs; Rice

期刊名称:JOURNAL OF PLANT GROWTH REGULATION ( 影响因子:4.64; 五年影响因子:4.469 )

ISSN: 0721-7595

年卷期:

页码:

收录情况: SCI

摘要: Crop yield is largely determined by the solar energy utilization efficiency of photosynthesis; plants with long stay-green periods have greater total photosynthetic production levels and crop yields. Here, a novel seedling chlorosis and lethality (scl) mutant exhibiting a yellow leaf and seedling-lethal phenotype was identified in rice (Oryza sativa L.). The mutant had deformed chloroplasts and almost no protein complexes in thylakoid membranes. The expression levels of photosynthesis-associated genes were significantly down-regulated in scl compared with the wild-type (WT). Positive transgenic lines generated by Agrobacterium tumefaciens-mediated transformation of the scl mutant with a complementation vector harboring SCL cDNA exhibited the normal green leaf phenotype, whereas the scl seedling harboring the empty vector displayed the yellow leaf phenotype, indicating that SCL is LOC_Os01g72800. A fusion protein expressing SCL with green fluorescent protein revealed the fluorescence signal localized to chloroplasts. The expression patterns of chloroplast development and chlorophyll biosynthesis and degradation-related genes were disordered in scl mutant, possibly resulting in the yellow leaf phenotype. These results indicated that the SCL loss of function impaired chloroplast development, chlorophyll biosynthesis, and light-harvesting chlorophyll-binding protein transportation in rice.

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