Na + /H + and K + /H + antiporters AtNHX1 and AtNHX3 from Arabidopsis improve salt and drought tolerance in transgenic poplar
| 作者： | L. Yang, H. Liu, S. M. Fu, H. M. Ge, R. J. Tang, Y. Yang, H. H. Wang, H. X. Zhang |
| 作者单位： |
1Nanjing University 2Ludong University 3Chinese Academy of Sciences |
| 刊名： | Biologia Plantarum, 2017, Vol.61 (4), pp.641-650 |
| 来源数据库： | Springer Journal |
| DOI： | 10.1007/s10535-017-0724-9 |
| 关键词： | Abiotic stress; Electrolyte leakage; Populus davidiana × Populus bolleana; Tonoplast vesicles; Transgenic plant; Water deficit; |
| 英文摘要： | The tonoplast and plasma membrane localized sodium (potassium)/proton antiporters have been shown to play an important role in plant resistance to salt stress. In this study, AtNHX1 and AtNHX3 , two tonoplast Na+(K+)/H+ antiporter encoding genes from Arabidopsis thaliana , were expressed in poplar to investigate their biological functions in the resistance to abiotic stresses in woody plants. Transgenic poplar plants expressing either gene exhibited increased resistance to both salt and water-deficit stresses. Compared to the wild type (WT) plants, transgenic plants accumulated more sodium and potassium ions in the presence of 100 mM NaCl and showed reduced electrolyte leakage in the leaves under water stress. Furthermore, the proton-translocating and... |
| 原始语种摘要： | The tonoplast and plasma membrane localized sodium (potassium)/proton antiporters have been shown to play an important role in plant resistance to salt stress. In this study, AtNHX1 and AtNHX3 , two tonoplast Na+(K+)/H+ antiporter encoding genes from Arabidopsis thaliana , were expressed in poplar to investigate their biological functions in the resistance to abiotic stresses in woody plants. Transgenic poplar plants expressing either gene exhibited increased resistance to both salt and water-deficit stresses. Compared to the wild type (WT) plants, transgenic plants accumulated more sodium and potassium ions in the presence of 100 mM NaCl and showed reduced electrolyte leakage in the leaves under water stress. Furthermore, the proton-translocating and... |
