| dc.description.abstract | Two-component systems (TCSs) have been shown to participate in plant responses to drought. From previous study, soybean gene GmRR34 encoding for the response regulator protein of the TCS, has been shown to have higher expression in the drought-tolerant cultivar compared to the drought-sensitive cultivar under both normal and drought conditions. The obtained results from this study revealed that the transgenic Arabidopsis overexpressing GmRR34 had lower hydrogen peroxide (H2O2) content than the wild-type Arabidopsis upon the drought treatment. In addition, the presence of GmRR34 also made the transgenic plants possessed higher activities of antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) under both normal and drought conditions. These findings suggest that the transformed plants had better capacity to minimize the drought-inducible oxidative effects in comparison to the non-transgenic counterparts. Taken all of these results together, this report firstly showed that GmRR34 is a remarkable candidate for improving drought tolerance via genetic engineering approach.
Keywords: catalase, drought stress, GmRR34, hydrogen peroxide, peroxidase, superoxide dismutase, transgenic Arabidopsis, two component systems | en_US |
