| 项目编号: | 1665263
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| 项目名称: | Collaborative Research: Ecological Diversification and Molecular Evolution of Grasses (Poaceae) |
| 作者: | Scot Kelchner
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| 承担单位: | Utah State University
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| 批准年: | 2016
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| 开始日期: | 2016-09-01
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| 结束日期: | 2017-09-30
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| 资助金额: | 150470
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | grass
; evolutionary study
; dna sequence evolution
; ecological adaptation
; ecological importance
; grass diversification
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| 英文摘要: | Over 10,000 species of grasses are known to science. Grasses proliferated rapidly, obscuring their historical relationships. This project integrates three broad approaches in a study of grass diversification using contemporary methods to reconstruct the genealogy of the grasses. Next generation DNA sequencing methods will be used to determine complete chloroplast genomes and subregions of the nuclear genome from at least 100 species. Bioinformatics analyses will explore patterns and rates of DNA sequence evolution. Studies of development, especially in leaves, will be used to test whether particular adaptations are correlated with historical migrations into new habitats.
Grasses are of fundamental economic and ecological importance. Rice, wheat, maize and other cereals supply half of human dietary calories. Wild grasses predominate over 25% of Earth's terrestrial landscape. A better understanding of their relationships is fundamental to predicting the response of grasslands and cereal crops to environmental change. Analyses of sequence data will clarify relationships and have broad application in evolutionary studies. Ecological adaptations will be better understood when viewed in a developmental context. An image-rich web site will be established, with content in English and Spanish, with information on grass structure, classification, and evolution. The new framework of grass relationships and accompanying web resources will appeal to a broad range of users and promote international collaborations. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/91074
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Scot Kelchner. Collaborative Research: Ecological Diversification and Molecular Evolution of Grasses (Poaceae). 2016-01-01.
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