RsGLK2.1-RsNF-YA9a module positively regulates the chlorophyll biosynthesis by activating RsHEMA2 in green taproot of radish

Copyright © 2023 Elsevier B.V. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant science : an international journal of experimental plant biology. - 1985. - 334(2023) vom: 22. Sept., Seite 111768
1. Verfasser: Ying, Jiali (VerfasserIn)
Weitere Verfasser: Wang, Yan, Xu, Liang, Yao, Shuqi, Wang, Kai, Dong, Junhui, Ma, Yinbo, Wang, Lun, Xie, Yang, Yan, Kang, Li, Jingxue, Liu, Liwang
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Plant science : an international journal of experimental plant biology
Schlagworte:Journal Article GOLDEN2-LIKE Green taproot Photo-induced chlorophyll biosynthesis RsHEMA2 RsNF-YA9a Transcriptional regulation Plant Proteins
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245 1 0 |a RsGLK2.1-RsNF-YA9a module positively regulates the chlorophyll biosynthesis by activating RsHEMA2 in green taproot of radish 
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520 |a Radish (Raphanus sativus L.) is an economically important and widely cultivated root vegetable crop. The coloration of the green skin and green flesh is an important trait influencing the nutrition and flavor quality in fruit radish. GOLDEN2-LIKEs (GLKs) play critically important roles in plastid development and chlorophyll biosynthesis in plants. However, the molecular mechanism underlying chlorophyll biosynthesis still remain elusive in green fruit radish taproot. Herein, the RsGLK2.1 gene exhibited higher expression level in taproot with a green skin (GS) and green flesh (GF) than that in taproot of the white or red radish genotypes. RsGLK2.1 is a nuclear transcription factor that has intrinsic transcriptional activation activity. Overexpression of RsGLK2.1 increased the total chlorophyll content of 20.68%-45.84% in radish leaves. Knockout of the RsGLK2.1 gene via CRISPR/Cas9 technology resulted in a significant decrease in the chlorophyll content. Overexpression of the RsGLK2.1 gene could restore the phenotype of the glk1glk2 mutant Arabidopsis. RsGLK2.1 was participated in regulating the chlorophyll biosynthesis by directly binding to the promoter of RsHEMA2 and activating its transcription. The interaction of RsNF-YA9a with RsGLK2.1 increased the transcriptional activity of the downstream gene RsHEMA2 under the light condition rather than the dark condition, indicating that both of them regulate the chlorophyll biosynthesis in a light-dependent manner of radish. Overall, these results provided insights into the molecular framework of the RsGLK2.1-RsNF-YA9a module, and could facilitate dissecting the regulatory mechanism underlying chlorophyll biosynthesis in green taproot of radish, and genetic improvement of quality traits in fruit radish breeding programs 
650 4 |a Journal Article 
650 4 |a GOLDEN2-LIKE 
650 4 |a Green taproot 
650 4 |a Photo-induced chlorophyll biosynthesis 
650 4 |a RsHEMA2 
650 4 |a RsNF-YA9a 
650 4 |a Transcriptional regulation 
650 7 |a Plant Proteins  |2 NLM 
700 1 |a Wang, Yan  |e verfasserin  |4 aut 
700 1 |a Xu, Liang  |e verfasserin  |4 aut 
700 1 |a Yao, Shuqi  |e verfasserin  |4 aut 
700 1 |a Wang, Kai  |e verfasserin  |4 aut 
700 1 |a Dong, Junhui  |e verfasserin  |4 aut 
700 1 |a Ma, Yinbo  |e verfasserin  |4 aut 
700 1 |a Wang, Lun  |e verfasserin  |4 aut 
700 1 |a Xie, Yang  |e verfasserin  |4 aut 
700 1 |a Yan, Kang  |e verfasserin  |4 aut 
700 1 |a Li, Jingxue  |e verfasserin  |4 aut 
700 1 |a Liu, Liwang  |e verfasserin  |4 aut 
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773 1 8 |g volume:334  |g year:2023  |g day:22  |g month:09  |g pages:111768 
856 4 0 |u http://dx.doi.org/10.1016/j.plantsci.2023.111768  |3 Volltext 
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