Overexpression of the Galega orientalis gibberellin receptor improves biomass production in transgenic tobacco

文献类型： 外文期刊

第一作者： Li, Jun

作者： Li, Jun;Gao, Hongwen;Jiang, Jishan;Wang, Zan;Wang, Xuemin;Dzyubenko, Nikolay;Chapurin, Vladimir

作者机构：

关键词： Biomass;Galega orientalis L;Gibberellin receptor;Transgenic tobacco

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

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收录情况： SCI

摘要： Gibberellins (GAs) are well-known phytohormones that contribute to a wide range of plant growth and development functions including stem elongation and leaf expansion. GA receptors perceive GA and transmit signals to activate GA-regulated reactions. In this study, a GA receptor gene with homology to other leguminous plants was isolated from Galega orientalis and termed GoGID. The 1732-bp full-length GoGID gene included an open reading frame of 1035 bp encoding a peptide of 344 amino acids. Sequence analysis indicated that GoGID shares conserved HGGS motif and active amino acid sites (Ser-Asp-Val/IIe) that are essential for maintaining it GA-binding activity. GoGID mRNA expression was more abundant in leaves than in roots or stems and could be up-regulated by the exogenous hormones. Overexpression of GoGID in transgenic tobacco plants promoted plant elongation and improved biomass production. These results suggested that GoGID functions as a GA receptor to alter GA-mediated signaling. GoGID may have a role in genetic engineering for the improvement of forage crops.

分类号： Q945`Q946

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