Transcriptome Profiling Reveals Association of the Regulatory Pathways of Yellow Leaf Color Mutant with Chlorophyll Synthesis and Photosynthesis in Sesame (Sesamum indicum)
文献类型： 外文期刊
作者： Gao, Tongmei 1 ; Pei, Xinyong 2 ; Su, Xiaoyu 1 ; Wei, Libin 1 ; Li, Chun 1 ; Li, Feng 1 ; Tian, Yuan 1 ; Wang, Dongyong 1 ;
作者机构： 1.Henan Acad Agr Sci, Henan Sesame Res Ctr, Key Lab Oil Crops Huanghuai Hai Plains, Zhengzhou 450002, Henan, Peoples R China
2.Henan Acad Agr Sci, Agr Econ & Informat Res Inst, Zhengzhou 450002, Henan, Peoples R China
关键词： Sesame (Sesamum indicum L.); Leaf color mutant; Transcriptome; Chlorophyll biosynthesis; Transcription factor
期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）
ISSN： 1560-8530
年卷期： 2020 年 24 卷 6 期
页码：
收录情况： SCI
摘要： For green plants, variations in the leaf color, which are closely related to chlorophyll metabolism and photosynthesis, can reduce photosynthetic capacity and efficiency. However, the regulatory mechanism of leaf color formation, especially for sesame, is still not clear. Leaf color mutants are an ideal material to explore regulatory pathways associated with chlorophyll synthesis and photosynthesis. In this study, the green (y type) and the yellow (YY type) leaf color progenies of the sesame mutant (Siyl-1) were compared by RNA sequencing and physiological analysis. Physiologically, the yellow colored mutant leaves had lower chlorophyll content and almost no photochemical conversion efficiency. Of the 540 differentially expressed genes (DEGs) identified, 320 were up-regulated and 220 down-regulated. Of these, 7 DEGs were involved in chlorophyll biosynthesis (CAO), photosynthesis (Lhca2, Lhcb3, and Lhcb6) and carbon fixation in photosynthetic organisms (ALDO, PckA, and rpiA). The expression of these genes, except ALDO and rpiA, was significantly suppressed in the yellow leaf color mutant. Moreover, the DEGs included transcription factor and heat shock protein genes that might be important for the regulation of gene expression in the aspect of chlorophyll synthesis and chloroplast development. Thus, results might provide a more integrated picture about the regulatory mechanism of leaf color formation for sesame. (C) 2020 Friends Science Publishers
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