Low temperature sensing in silver birch (Betula pendula Roth) ecotypes
文献类型：期刊论文
| 作者 | Li, CY ; Junttila, O ; Heino, P ; Palva, ET |
| 刊名 | PLANT SCIENCE
 |
| 出版日期 | 2004 |
| 卷号 | 167期号:1页码:165_171 |
| 关键词 | abscisic acid cold acclimation freezing tolerance dormancy release |
| ISSN号 | 0168-9452 |
| 通讯作者 | Li, CY, Chinese Acad Sci, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China. |
| 中文摘要 | Non-freezing low temperature (LT) is the main factor controlling cold acclimation and dormancy release of woody plants in the cold and temperate regions. Through evolution many tree species have developed different ecotypes, which are closely adapted to the local climatic conditions. In order to elucidate the physiological basis of climatic adaptation involved in LT sensing in the northern tree species, we investigated responses of the northern and southern ecotypes of silver birch (Betula pendula Roth) to a range of decreasing temperatures. Development of freezing tolerance, determined by the electrolyte leakage, and bud dormancy release were monitored. A range of decreasing temperatures triggered cold acclimation and development of freezing tolerance in actively growing plants, and enhanced freezing tolerance and released bud dormancy in the dormant plants in both ecotypes tested. However, there were significant ecotypic differences in LT-induced cold acclimation and bud dormancy release. The northern ecotype was more responsive to a range of decreasing temperatures than the southern ecotype, resulting in more rapid cold acclimation and development of freezing tolerance in actively growing plants, and earlier enhancement of freezing tolerance and bud dormancy release in the dormant plants. Development of freezing tolerance and dormancy release induced by LT was accompanied by changes in ABA levels. Alterations in ABA levels paralleled with development of freezing tolerance and preceded bud dormancy release in both ecotypes tested, but these alterations in ABA levels were ecotype-dependent, the northern ecotype reacting more strongly to LT. (C) 2004 Elsevier Ireland Ltd. All rights reserved. |
| 学科主题 | Biochemistry & Molecular Biology; Plant Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2011-07-08 |
| 源URL | [http://210.75.237.14/handle/351003/21614]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Li, CY,Junttila, O,Heino, P,et al. Low temperature sensing in silver birch (Betula pendula Roth) ecotypes[J]. PLANT SCIENCE,2004,167(1):165_171. |
| APA | Li, CY,Junttila, O,Heino, P,&Palva, ET.(2004).Low temperature sensing in silver birch (Betula pendula Roth) ecotypes.PLANT SCIENCE,167(1),165_171. |
| MLA | Li, CY,et al."Low temperature sensing in silver birch (Betula pendula Roth) ecotypes".PLANT SCIENCE 167.1(2004):165_171. |
入库方式： OAI收割
来源：成都生物研究所
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