| 项目编号: | 1441393
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| 项目名称: | Collaborative Research: The Genomic Effects of Selection for Herbicide Resistance in Green Foxtail |
| 作者: | Elizabeth Kellogg
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| 承担单位: | Donald Danforth Plant Science Center
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| 批准年: | 2013
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| 开始日期: | 2014-01-06
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| 结束日期: | 2014-07-31
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| 资助金额: | USD34218
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| 资助来源: | US-NSF
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| 项目类别: | Continuing 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: | green foxtail
; herbicide resistance
; project
; resistance
; herbicide resistant genotype
; university
; strong selection
; herbicide application
; extensive herbicide pressure
; intense directional selection
; research interest
; independent research
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| 英文摘要: | PIs: Katrien M. Devos (University of Georgia) and Elizabeth A. Kellogg (University of Missouri - Saint Louis)
CoPI: Jeffrey Bennetzen (University of Georgia)
Setaria viridis or green foxtail is a ubiquitous weed that was introduced from Eurasia during the past 500 years. It is often found in and around cultivated fields and the extensive herbicide pressure imposed by agricultural weed control has led to the development of herbicide resistant genotypes. Resistance to four different types of herbicides has been identified in S. viridis. Under continued herbicide application, the genome region that carries the resistance will be under strong selection and this is expected to lead to reduced variation at the herbicide resistance locus and surrounding genome region. The project aims to compare the genetic variation at the whole genome level with the variation present in and around three herbicide resistance genes. To achieve this objective, S. viridis accessions will be collected from North America and Canada, where herbicide resistance has previously been observed. S. viridis accessions from around the world will be obtained from national and international germplasm repositories. The plants will be tested for herbicide resistance. Cutting edge molecular techniques, including high-throughput sequencing, will be used to analyze the genetic variation. The project will provide new insights into the diversity of green foxtail worldwide, the history and origin of green foxtail introductions into North America, the nature of the mutations that give rise to herbicide resistance, how the resistance spreads through populations and the effects of intense directional selection on genome evolution.
The project provides a vehicle for training students at the undergraduate, graduate and post-doctoral level in independent research. In addition, the project data will be used as hands-on teaching materials in graduate courses taught by the PIs. The project also aims to provide a link between weed scientists, germplasm curators and geneticists with an interest in green foxtail. To raise awareness of the research interests of the different groups and to facilitate collaborations, the project will organize a workshop to discuss available green foxtail collections, maintenance of those stocks, genomic tools and common goals. All sequence data produced by this project will be made publicly available through GenBank. Germplasm can be obtained from the University of Georgia and the USDA-ARS Germplasm Resources Information Network (GRIN) (www.ars-grin.gov). |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/97436
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Elizabeth Kellogg. Collaborative Research: The Genomic Effects of Selection for Herbicide Resistance in Green Foxtail. 2013-01-01.
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