Abstract
Stable transgenic rice line (named KRSV-1) with strong resistance against rice stripe virus was generated using the gene sequence of disease-specific protein by RNA interference. Comprehensive safety assessment of transgenic plants has turned into a significant field of genetic modification food safety. In this study, a safety assessment of KRSV-1 was carried out in a stepwise approach. The molecular analysis exhibited that KRSV-1 harbored one copy number of transgene, which was integrated into the intergenic non-coding region of chromosome 2 associated with inter-chromosomal translocations of 1.6-kb segments of chromosome 8. Then, transcriptomics and proteomics analyses were carried out to detect the unintended effects as a result of the integration of the transgene. Although 650 dramatically differentially expressed genes (DDEGs) and 357 differentially expressed proteins were detected between KRSV-1 and wild-type (WT) by transcriptomics and proteomics analyses, no harmful members in the form of toxic proteins and allergens were observed. Encouragingly, the nutritional compositions of seeds from KRSV-1 were comparable with WT seeds. The results of this entire study of molecular analysis, transcriptome and proteome profile of KRSV-1 revealed that no detrimental changes in the form of toxic proteins and allergens were detected in the transgenic rice line due to the integration of the transgene.
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Acknowledgements
The authors acknowledge Shandong Entry-Exit Inspection and Quarantine Bureau, Qingdao, China for composition analysis. The authors acknowledge financial support from the China National Transgenic Plant Research and Commercialization Project (Grant No. 2016ZX08001-002) in China.
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Xu, Y., Bi, L., Yu, Z. et al. Comprehensive transcriptomics and proteomics analyses of rice stripe virus-resistant transgenic rice. J Biosci 44, 81 (2019). https://doi.org/10.1007/s12038-019-9914-2
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DOI: https://doi.org/10.1007/s12038-019-9914-2