REVSYS - COLLABORATIVE RESEARCH: A Model System Revisited: Phylogenetic Relationships and Species Limits Among Diploid Taxa of Boechera (Brassicaceae)

REVSYS - 合作研究：重新审视模型系统：Boechera（十字花科）二倍体类群的系统发育关系和物种限制

• 批准号: 0816560
• 负责人: Michael Windham
• 金额: $ 19.32万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0816560&HistoricalAwards=false
• 关键词: REVSYS; COLLABORATIVE; RESEARCH; Model; System

The flowering plant genus Boechera, with 110 North American species and a number of endangered taxa, is frequently the focus of studies in plant ecology and evolutionary biology. Such studies seek to understand processes of divergent evolution and hybridization in a group that exhibits both sexual and asexual modes of reproduction. Unfortunately, conclusions drawn from previous studies on this group have been severely constrained by a poor understanding of the phylogenetic relationships among its members. Bailey et al. will combine studies from fieldwork across North America, DNA sequences, morphological assessments, and chromosomal information to clarify the phylogenetic relationships among species of Boechera, establish the number and distribution of divergent sexual species vs. asexual species, and assess species boundaries. The resulting phylogenetic tree will be used to test hypotheses about the evolution of reproductive modes over time.This collaborative effort involves four researchers with extensive experience in diverse areas of biology. The project provides extensive training of graduate and undergraduate students in wide-ranging aspects of organismal and molecular biology. The fact that Boechera is a close relative of the primary plant model organism Arabidopsis adds to the synergistic value and broader impacts of the research. Lastly, the completion of web resources for the dissemination of information on Boechera will provide a valuable asset for researchers and members of the public interested in these fascinating plants.

开花植物Boechera属，有110种北美物种和许多濒危类群，通常是植物生态学和进化生物学研究的重点。这样的研究试图了解表现出性行为和无性繁殖模式的群体中发散进化和杂交的过程。不幸的是，从先前对该组的研究中得出的结论受到对其成员之间系统发育关系的不良理解的严重限制。 Bailey等。将结合整个北美实地研究，DNA序列，形态评估和染色体信息的研究，以阐明Boechera物种之间的系统发育关系，建立性别与无性物种的数量和分布，并评估物种边界。由此产生的系统发育树将用于测试有关生殖模式随着时间的演变的假设。这项协作努力涉及四名在不同生物学领域具有丰富经验的研究人员。该项目提供了对生物和分子生物学广泛方面的研究生和本科生的广泛培训。 Boechera是主要植物模型有机体拟南芥的亲戚，这一事实增加了研究的协同价值和更广泛的影响。最后，完成网络资源以传播有关Boechera的信息将为研究人员和对这些迷人工厂感兴趣的公众提供宝贵的资产。