Ectopic expression of MYB repressor GmMYB3a improves drought tolerance and productivity of transgenic peanuts (Arachis hypogaea L.) under conditions of water deficit
| Autor: | Shujing Mu, Wang Baizhong, Li Yufa, He Zhongguo, He Yuxuan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Arachis Drought tolerance Biology Photosynthesis 01 natural sciences Ectopic Gene Expression Soil 03 medical and health sciences Gene Expression Regulation Plant Genetics MYB Water-use efficiency Water content Abiotic component fungi food and beverages Plant Transpiration Plants Genetically Modified Droughts Arachis hypogaea Repressor Proteins Oxidative Stress Transformation (genetics) 030104 developmental biology Agronomy Soybean Proteins Animal Science and Zoology Agronomy and Crop Science 010606 plant biology & botany Biotechnology |
| Zdroj: | Transgenic Research. 29:563-574 |
| ISSN: | 1573-9368 0962-8819 |
| DOI: | 10.1007/s11248-020-00220-z |
| Popis: | Peanut is widely grown and provides protein and edible oil for millions of people. Peanut growth and productivity are frequently negatively affected by abiotic and biotic environmental factors. However, the research on improving peanut germplasm resources by genetic transformation is very limited. Here, the novel R2R3-MYB repressor GmMYB3a was introduced into peanut plants by Agrobacterium-mediated transformation for the first time for thorough evaluation of the function of GmMYB3a in drought stress plant responses. We generated GmMYB3a-transgenic peanut plants. The GmMYB3a-overexpressing lines showed significantly improved physiological responses and no yield loss non-transgenic plants, in terms of survival rates. Thus, the GmMYB3a-overexpressing plants showed better photosynthetic performance, higher relative water content, and greater water use efficiency, demonstrating their adaptive capacity to water deficit. We conclude that overexpression of GmMYB3a can improve drought tolerance and productivity in peanut. |
| Databáze: | OpenAIRE |
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