期刊
JOURNAL OF FORESTRY RESEARCH
卷 27, 期 3, 页码 675-683出版社
NORTHEAST FORESTRY UNIV
DOI: 10.1007/s11676-015-0179-9
关键词
Proline content; Expression profile; Drought stress; Salt stress; Cold stress; Heat stress
类别
资金
- National Natural Science Foundation of China [31260189]
- Collaborative Innovation Center Construction of Research and Development on Tibetan Characteristic Agricultural and Animal Husbandry Resources on plateau ecology
Sophora moorcroftiana is an endemic, drought-resistant shrub that grows in Tibet and has some degree of resistance to salt, cold, heat, and drought. In the present study, four dehydration responsive element-binding (DREB) genes (SmDREB1, SmDREB2, SmDREB and SmDREB1) were isolated from S. moorcroftiana for the first time and their expression and proline content under abiotic stress were analyzed. Proline accumulated in seedlings under drought, salt, cold, and heat stress treatments. The four genes were variously expressed in response to the four abiotic stresses. SmDREB1 was induced by drought, cold, and heat stresses; SmDREB2 and SmDREB4 were both induced by salt, cold, and heat stresses, whereas SmDREB3 was induced by drought and heat stresses. Thus, these four genes may participate in conferring tolerance to these four abiotic stresses and are candidate genes for genetic engineering in the future.
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