Reference Report for AP20210714.3
| Title: | Ectopic Expression of Glycine max GmNac109 enhances drought tolerance and ABA sensitivity in Arabidopsis |
| Authors: | Nguyen, N. C., Hoang, X. L. T., Nguyen, Q. T., Binh, N. X., Watanabe, Y., Thao, N. P., Tran, L. P. |
| Source: | Nguyen et al. 2019 Biomolecules, 9(11): 714 |
| Abstract: | The NAC (NAM, ATAF1/2, CUC2) transcription factors are widely known for their various functions in plant development and stress tolerance. Previous studies have demonstrated that genetic engineering can be applied to enhance drought tolerance via overexpression/ectopic expression ofNACgenes. In the present study, the dehydration- and drought-inducibleGmNAC109fromGlycine maxwas ectopically expressed inArabidopsis(GmNAC109-EX) plants to study its biological functions in mediating plant adaptation to water deficit conditions. Results revealed an improved drought tolerance in the transgenic plants, which displayed greater recovery rates by 20% to 54% than did the wild-type plants. In support of this finding,GmNAC109-EX plants exhibited lower water loss rates and decreased endogenous hydrogen peroxide production in leaf tissues under drought, as well as higher sensitivity to exogenous abscisic acid (ABA) treatment at germination and early seedling development stages. In addition, analyses of antioxidant enzymes indicated thatGmNAC109-EX plants possessed stronger activities of superoxide dismutase and catalase under drought stress. These results together demonstrated that GmNAC109 acts as a positive transcriptional regulator in the ABA-signaling pathway, enabling plants to cope with adverse water deficit conditions. |
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