Comparison of four glyphosate tolerance genes

doi:10.11686/cyxb20150519

Abstract

Abstract: Glyphosate tolerance is an important agronomic trait in modern agriculture. In order to determine the best glyphosate tolerance gene for plant selectable markers we compared four glyphosate tolerance genes, cp4-epsps, GR79-epsps, gat4621 and GAT, in Arabidopsis. Four transgenic plants harboring each gene were treated with four different rates of glyphosate. The results showed that the resistance of plants with GAT gene was significantly higher than plants with the epsps gene. Plants with the gat4621 gene had the highest survival rate at all herbicide rates. The plants with the domestic GAT gene also had strong resistance. Reproductive development of Arabidopsis plants with the GAT gene was suppressed at higher glyphosate application rates.It was concluded that the GAT gene was more suitable as a selectable marker gene.

LIU Jian, XIAO Ya-Wen, LU Jia, WU Zhong-Yi, ZHANG Zhong-Bao, XU Jie, YAO Lei. Comparison of four glyphosate tolerance genes[J]. Acta Prataculturae Sinica, 2015, 24(5): 159-166.

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