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| RUI - Testing of the Evolutionary Potential of Polyploids in the Context of Climate Change | |
| 项目编号 | 0641285 |
| Julie Etterson | |
| 项目主持机构 | University of Minnesota Duluth |
| 开始日期 | 2007-02-01 |
| 结束日期 | 2013-01-31 |
| 英文摘要 | Anthropogenic climate change will alter patterns of natural selection and pose strong evolutionary challenges to wild organisms. Plant species that have experienced genome doubling, or polyploidy, may have an advantage over those possessing a single copy of the genome because they can evolve faster or in novel directions in response to climate change. Examination of the creative role of polyploidy is important given that genome duplication is thought to have occurred in 47%-70 % of flowering plant species. This research will test the evolutionary potential of polyploids by imposing artificial selection for increased drought tolerance in a polyploid species (goldenrod, Solidago altissima) that varies naturally in chromosome number (2, 4, and 6 copies). The central hypothesis of this research will be supported if plants with higher chromosome numbers evolve faster in response to artificial selection. This work will provide a large number of students with intensive hands-on training in lab and field techniques and provide opportunities for independent research at the graduate and undergraduate level. This research fulfills the objectives of the RUI program by addressing a question of great interest to society, the impact of climate change, and by providing solid training to a diversity of students who will become the next generation of scientists. |
| 学科分类 | 09 - 环境科学;0903 - 环境生物学 |
| 资助机构 | US-NSF |
| 项目经费 | 589833 |
| 项目类型 | Continuing grant |
| 国家 | US |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/72747 |
| 推荐引用方式 GB/T 7714 | Julie Etterson.RUI - Testing of the Evolutionary Potential of Polyploids in the Context of Climate Change.2007. |
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