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Ectopic Expression of JcCPL1, 2, and 4 Affects Epidermal Cell Differentiation, Anthocyanin Biosynthesis and Leaf Senescence in Arabidopsis thaliana

文献类型： 外文期刊

作者： Chen, Yanbo 1 ; Wu, Pingzhi 2 ; Zhang, Chao 4 ; Guo, Yali 2 ; Liao, Bingbing 1 ; Chen, Yaping 2 ; Li, Meiru 2 ; Wu, Guojiang 2 ; Wang, Yaqin 1 ; Jiang, Huawu 2 ;

作者机构： 1.South China Normal Univ, Sch Life Sci, Guangdong Prov Key Lab Biotechnol Plant Dev, Guangzhou 510631, Peoples R China

2.Chinese Acad Sci, South China Bot Garden, Key Lab Plant Resources Conservat & Sustainable U, Guangzhou 510650, Peoples R China

3.Guangdong Acad Agr Sci, Key Lab South Subtrop Fruit Biol & Genet Resource, Key Lab Trop & Subtrop Fruit Tree Res Guangdong P, Minist Agr,Inst Fruit Tree Res, Guangzhou 510640, Peoples R China

4.Northwest A&F Univ, Coll Agron, Xianyang 712100, Peoples R China

关键词： MYB-related transcription factor; physic nut (Jatropha curcas L; ); epidermal cell differentiation; anthocyanin; leaf senescence

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 4 期

页码：

收录情况： SCI

摘要： The CAPRICE (CPC)-like (CPL) genes belong to a single-repeat R3 MYB family, whose roles in physic nut (Jatropha curcas L.), an important energy plant, remain unclear. In this study, we identified a total of six CPL genes (JcCPL1-6) in physic nut. The JcCPL3, 4, and 6 proteins were localized mainly in the nucleus, while proteins JcCPL1, 2, and 5 were localized in both the nucleus and the cytoplasm. Ectopic overexpression of JcCPL1, 2, and 4 in Arabidopsis thaliana resulted in an increase in root hair number and decrease in trichome number. Consistent with the phenotype of reduced anthocyanin in shoots, the expression levels of anthocyanin biosynthesis genes were down-regulated in the shoots of these three transgenic A. thaliana lines. Moreover, we observed that OeJcCPL1, 2, 4 plants attained earlier leaf senescence, especially at the late developmental stage. Consistent with this, the expression levels of several senescence-associated and photosynthesis-related genes were, respectively, up-regulated and down-regulated in leaves. Taken together, our results indicate functional divergence of the six CPL proteins in physic nut. These findings also provide insight into the underlying roles of CPL transcription factors in leaf senescence.

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