A Phylogeny of Pinus [Pinaceae] Based on Six Low-Copy Nuclear Genes

基于六个低拷贝核基因的松科植物系统发育

• 批准号: 0317103
• 负责人: Aaron Liston
• 金额: --
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0317103&HistoricalAwards=false
• 关键词: Phylogeny; Pinus; Pinaceae; Based; Six

A grant has been awarded to Dr. Aaron Liston at Oregon State University and Dr. Richard Cronn at the USDA Forest Service to investigate evolutionary and genetic relationships among the approximately 100 species of pine trees (the genus Pinus). Pines are the most widespread genus of woody plants native to the Northern Hemisphere, and are widely planted in the Southern Hemisphere. Thus pines are of vast economic and ecological importance worldwide. Past studies of pine evolutionary relationships have produced conflicting results, and no more than half of all species have been included in any single analysis. To address these problems, Liston and Cronn will use genomic data emerging from research on loblolly pine to identify twenty-five nuclear genetic markers for screening DNA-level variation across the genus. The six most promising markers will be used to construct a multi-gene estimate of evolutionary relationships for all available pine species, and to identify the source of conflict among existing studies. The potential for transferring these markers to phylogenetic studies of other gymnosperm genera will also be examined. The resolution of systematic relationships among pine species will result in an enhanced understanding of their evolutionary history, and contribute to an improved classification of the genus. Furthermore, these results will provide a robust foundation for studies of pine ecology and evolutionary biology. By determining which species are most closely related, the results should contribute to efforts focused on the genetics and breeding of pine species. It is also anticipated that the genetic markers developed here will be useful in similar studies of other gymnosperm genera. Two graduate and two undergraduate students will be supervised by Liston and Cronn, and receive training in the field of plant molecular systematics.

俄勒冈州州立大学的亚伦·利斯顿博士和美国农业部林务局的理查德·克朗博士获得了一笔赠款，用于调查大约100种松树（松属）之间的进化和遗传关系。 松树是原产于北方的木本植物中分布最广的属，并且在南半球被广泛种植。 因此，松树在世界范围内具有巨大的经济和生态重要性。 过去对松树进化关系的研究产生了相互矛盾的结果，在任何一次分析中，都没有超过一半的物种被包括在内。 为了解决这些问题，Liston和Cronn将使用火炬松研究中出现的基因组数据来确定25个核遗传标记，用于筛选整个属的DNA水平变异。 六个最有前途的标记将被用来构建一个多基因估计的进化关系的所有可用的松树品种，并确定现有的研究之间的冲突的来源。 将这些标记转移到其他裸子植物属的系统发育研究的潜力也将被检查。 松属物种间系统关系的解决将导致他们的进化历史的理解，并有助于改进属的分类。此外，这些结果将为松树生态学和进化生物学的研究提供坚实的基础。 通过确定哪些物种是最密切相关的，结果应该有助于集中在松树物种的遗传和育种的努力。 同时也可以预期，这些遗传标记在裸子植物其他属的类似研究中也将是有用的。 两名研究生和两名本科生将由Liston和Cronn指导，并接受植物分子系统学领域的培训。