| 项目编号: | 1735604
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| 项目名称: | EAGER: Collaborative Research: Plastid genome evolution in Cactaceae, a New World succulent radiation |
| 作者: | Martin Wojciechowski
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| 承担单位: | Arizona State University
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| 批准年: | 2017
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| 开始日期: | 2017-06-01
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| 结束日期: | 2019-05-31
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| 资助金额: | 149086
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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: | project
; evolution
; cactaceae
; cactus
; genome reconfiguration
; genome evolution
; complete plastid genome
; genome variation
; molecular evolution
; evolutionary relationship
; research team
; flowering plant family cactaceae
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| 英文摘要: | This project will investigate genome evolution in cacti, the flowering plant family Cactaceae. The 1500 species of cacti are among the most spectacular and evolutionarily successful groups of succulent plants in arid and semi-arid regions of the Americas. Despite their remarkably diverse life forms and extreme physiological adaptations for life in arid, often hot habitats, genomic resources in Cactaceae are still very limited. This research team, with members from Arizona State University, the Desert Botanic Garden, and the University of Arizona, will provide fundamental genomic information and resources essential to our understanding of species diversity, ecology, photosynthesis and evolution of cacti, with expected impacts in basic science as well as horticultural and economic arenas. Undergraduates from underrepresented groups in science will be trained broadly in genomics, bioinformatics, computational, evolutionary and systematic biology techniques. Results from this project will be used to enhance an undergraduate genetics course and a biology education website at Arizona State University, and outreach programs at the Desert Botanical Garden. All data from the project will be deposited in public databases.
This project will focus on the unusual size and rearrangements of the plastid (i.e., chloroplast) genome within cacti, and in particular the loss of multiple genes critical to the process of photosynthesis observed in several large columnar North American species. The DNA sequence data generated will be used to produce complete plastid genomes, as well as identify multiple nuclear and mitochondrial genes, from a broad sampling of ecologically and morphologically diverse cactus species. This will enable an investigation of the distribution and pattern of specific structural genomic rearrangements and test hypotheses about the causes and consequences of these architectural changes. At the same time, the project will contribute data to generate a more robust phylogenetic framework for investigating the evolutionary relationships of specific groups of Cactaceae, as well as measuring rates of molecular evolution and mutation across the family. Reconstructing the history of gene losses and genome reconfigurations in this family of photosynthetic plants offers a system for studying genome variation and evolution under the selective pressures of life in the desert environment. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/90144
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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: | |
Martin Wojciechowski. EAGER: Collaborative Research: Plastid genome evolution in Cactaceae, a New World succulent radiation. 2017-01-01.
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