数字农科院2.0

A Gata Transcription Factor From Soybean (Glycine Max) Regulates Chlorophyll Biosynthesis And Suppresses Growth In The Transgenic Arabidopsis Thaliana

文献类型： 外文期刊

作者： Zhang, CJ; Huang, Y; Xiao, ZY; Yang, HL; Hao, QN; Yuan, SL; Chen, HF; Chen, LM; Chen, SL; Zhou, XN; Huang, WJ

作者机构：

关键词： Glycine Max; Soybean; Gata; Transcription Factor; Chlorophyll; Photosynthesis; Growth; Nitrogen

期刊名称： PLANTS-BASEL

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年卷期： 2020 年 9 卷 8 期

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收录情况： JCR（2021版）

摘要： Chlorophyll plays an essential role in photosynthetic light harvesting and energy transduction in green tissues of higher plants and is closely related to photosynthesis and crop yield. Identification of transcription factors (TFs) involved in regulating chlorophyll biosynthesis is still limited in soybean (Glycine max), and the previously identifiedGmGATA58is suggested to potentially modulate chlorophyll and nitrogen metabolisms, but its complete function is still unknown. In this study, subcellular localization assay showed that GmGATA58 was localized in the nucleus. Histochemical GUS assay and qPCR assay indicated thatGmGATA58was mainly expressed in leaves and responded to nitrogen, light and phytohormone treatments. Overexpression ofGmGATA58in theArabidopsis thalianaorthologAtGATA21(gnc) mutant complemented the greening defect, while overexpression in Arabidopsis wild-type led to increasing chlorophyll content in leaves through up-regulating the expression levels of the large of chlorophyll biosynthetic pathway genes, but suppressing plant growth and yield, although the net photosynthetic rate was slightly improved. Dual-luciferase reporter assay also supported that GmGATA58 activated the transcription activities of three promoters of key chlorophyll biosynthetic genes of soybean in transformed protoplast of Arabidopsis. It is concluded thatGmGATA58played an important role in regulating chlorophyll biosynthesis, but suppressed plant growth and yield in transgenic Arabidopsis.

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