| 项目编号: | 1407011
|
| 项目名称: | DISSERTATION RESEARCH: Gene flow by seed and pollen: implications for plant adaptation to changing climates |
| 作者: | Nancy Emery
|
| 承担单位: | Purdue University
|
| 批准年: | 2013
|
| 开始日期: | 2014-06-01
|
| 结束日期: | 2016-05-31
|
| 资助金额: | USD20020
|
| 资助来源: | US-NSF
|
| 项目类别: | Standard Grant
|
| 国家: | US
|
| 语种: | 英语
|
| 特色学科分类: | Biological Sciences - Environmental Biology
|
| 英文关键词: | plant species
; pollen movement
; gene flow
; seed
; genetic variation
; local adaptation
; climate change
; population genetics
; research institutes
; novel climate
; research experience
; flowering plant
; plant population
; seed dispersal
; genetic connectivity
; climate condition
|
| 英文摘要: | A critical challenge for ecologists today is to understand how species will respond to projected shifts in climate. Particularly lacking are approaches considering how genetic connectivity among populations will influence local adaptation to novel climates. In flowering plants, gene flow occurs through seed dispersal and pollen movement, and these processes can have different consequences for the distribution of genetic variation in traits that determine climatic tolerances. This project will incorporate estimates of seed and pollen movement into an analysis of local adaptation in Lasthenia fremontii (Asteraceae), a plant species that is endemic to vernal pool wetlands of western North America. The distribution of genetic variation, due to seed versus pollen movement, will be analyzed across the species range using molecular markers. This analysis will make it possible to evaluate the consequences of gene flow on the potential for plant populations to adapt to changing climate conditions.
Climate change presents a major threat to the world?s biodiversity. Species with patchy distributions, fragmented habitats and limited dispersal abilities, including many rare plant species, are particularly vulnerable because they cannot shift their distributions to track changing climatic regimes. Our project will significantly contribute to restoration and conservation efforts for narrowly distributed plant species in the face of climate change. We will develop a practical guide for the study of population genetics in vernal pool plant species that will be distributed to state and federal agencies, research institutes, and non-profit organizations involved in the conservation and management of vernal pool ecosystems. In addition, the project will provide research experience to undergraduate students, including individuals from groups underrepresented in the sciences. |
| 资源类型: | 项目
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/96770
|
| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
|
|
There are no files associated with this item.
|
| Recommended Citation: | |
Nancy Emery. DISSERTATION RESEARCH: Gene flow by seed and pollen: implications for plant adaptation to changing climates. 2013-01-01.
|
|
|