Ecology, Evolution, and Genetic Architecture of Reproductive Isolation in Iris Nelsonii: A Homoploid Hybrid.

尼尔森鸢尾生殖隔离的生态学、进化和遗传结构：同倍体杂交。

• 批准号: 0816905
• 负责人: Noland Martin
• 金额: $ 13.5万
• 依托单位: Texas State University - San Marcos
• 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: 2008-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0816905&HistoricalAwards=false
• 关键词: Ecology; Evolution; Genetic; Architecture; Reproductive

Understanding the origin and maintenance of species diversity is of primary importance to evolutionary biologists. Speciation is thought to primarily occur as populations diverge from each other. However, many species have arisen through a different and more poorly understood route, the process of homoploid hybrid speciation, in which hybrids form without genome duplication and are isolated reproductively from their parents. Questions such as the following can be addressed easily using species that have arisen by this process: What reproductive barriers are most important in maintaining species in nature? What is the genetic architecture of reproductive isolation? This project utilizes molecular and field techniques to examine homoploid hybrid speciation in the well-studied Louisiana Iris complex, using the hybrid species Iris nelsonii.This project will provide high school students, undergraduates, MSc, and PhD students with important preparation for answering some of the most fundamental questions in biology. It will support three students throughout their training at Texas State University, while also providing funds for traveling to scientific meetings to present their work. The project will promote diversity in science by immediately providing needed funds for female students. Further, the PI will recruit students from a primarily Hispanic background through a variety of outreach programs.

了解物种多样性的起源和维持对进化生物学家来说至关重要。物种形成被认为主要发生在种群彼此分化的过程中。然而，许多物种是通过一种不同的、更不为人所知的途径出现的，即同倍体杂交物种形成的过程，在这种过程中，杂交种的形成没有基因组复制，并且在生殖上与它们的亲本分离。下面的问题可以很容易地解决使用的物种已经出现了这一过程：什么生殖障碍是最重要的，在维持物种的性质？生殖隔离的遗传结构是什么？本项目利用分子和现场技术，研究同倍体杂交物种在路易斯安那州鸢尾复杂的研究，使用杂交种Iris nelsonii.This项目将提供高中生，本科生，硕士和博士生回答生物学中的一些最基本的问题的重要准备。它将支持三名学生在德克萨斯州立大学的整个培训过程，同时还为前往科学会议展示他们的工作提供资金。该项目将通过立即为女学生提供所需资金来促进科学的多样性。此外，PI将通过各种外展计划从主要是西班牙裔背景的学生中招募学生。