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Effect on Tanscriptome and Metabolome of Stacked Transgenic Maize

Source: Biotechnology Research Institute

The research group of Biotechnology Research Institute of Chinese Academy of Agricultural Sciences (CAAS) analyzed the impact of gene stacking on transcriptome and metabolomics of maize. The related paper was recently published on Plant Journal.

In this study, stacked transgenic maize 12-5×IE034 that contained insecticidal cry and glyphosate tolerance G10-epsps genes was obtained by crossing of transgenic maize varieties 12-5 and IE034. Transcriptome and metabolome analyses were performed for different maize varieties, including 12-5×IE034, 12-5, IE034, and conventional varieties collected from different province in China. The results showed that the 9 maize varieties had obvious difference in gene expression, and the effects of hybrid stacking are less than those from transformation and differing genotypes.

Gene stacking is a developing trend in agricultural biotechnology. Unintended effects in stacked transgenic plants are safety issues considered by the public and researchers. This study provides scientific data for the assessing unintended effects in stacked transgenic plants.

This study was supported by grants from the Major Project of China on New Varieties of GMO Cultivation (Grant No.: 2012zx08011-003, 2014ZX08011-04B). Associate Prof. Wang Xujing of Biotechnology Research Institute is the first author of this paper, and Prof. Wang Zhixing is the corresponding author. More details can be found in the link:
By Wang Xujing