Heterologous Expression of a Soybean Gene RR34 Conferred Improved Drought Resistance of Transgenic Arabidopsis
| Autor: | Xuan Lan Thi Hoang, Lam-Son Phan Tran, Nguyen Nguyen Chuong, Nguyen Binh Anh Thu, Nguyen Huu Cam Tu, Thai Nguyen Hoang Nam, Nguyen Cao Nguyen, Bui Thi Thanh Ha, Duong Hoang Trong Nghia, Nguyen Phuong Thao, Nguyen Van Gia Huy |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine GmRR34 Transgene Plant Science drought response regulator 01 natural sciences Article Superoxide dismutase 03 medical and health sciences chemistry.chemical_compound Arabidopsis soybean Gene Abscisic acid Ecology Evolution Behavior and Systematics Ecology biology fungi Botany food and beverages biology.organism_classification Cell biology Response regulator 030104 developmental biology chemistry two-component system QK1-989 biology.protein Ectopic expression Heterologous expression 010606 plant biology & botany |
| Zdroj: | Plants Volume 9 Issue 4 Plants, Vol 9, Iss 494, p 494 (2020) |
| ISSN: | 2223-7747 |
| DOI: | 10.3390/plants9040494 |
| Popis: | Two-component systems (TCSs) have been identified as participants in mediating plant response to water deficit. Nevertheless, insights of their contribution to plant drought responses and associated regulatory mechanisms remain limited. Herein, a soybean response regulator (RR) gene RR34, which is the potential drought-responsive downstream member of a TCS, was ectopically expressed in the model plant Arabidopsis for the analysis of its biological roles in drought stress response. Results from the survival test revealed outstanding recovery ratios of 52%&ndash 53% in the examined transgenic lines compared with 28% of the wild-type plants. Additionally, remarkedly lower water loss rates in detached leaves as well as enhanced antioxidant enzyme activities of catalase and superoxide dismutase were observed in the transgenic group. Further transcriptional analysis of a subset of drought-responsive genes demonstrated higher expression in GmRR34-transgenic plants upon exposure to drought, including abscisic acid (ABA)-related genes NCED3, OST1, ABI5, and RAB18. These ectopic expression lines also displayed hypersensitivity to ABA treatment at germination and post-germination stages. Collectively, these findings indicated the ABA-associated mode of action of GmRR34 in conferring better plant performance under the adverse drought conditions. |
| Databáze: | OpenAIRE |
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