Collaborative Research: The Evolutionary Genetics of Invasiveness in Silene latifolia

合作研究：Silene latifolia 侵袭性的进化遗传学

• 批准号: 0349558
• 负责人: Douglas Taylor
• 金额: --
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-01 至 2008-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0349558&HistoricalAwards=false
• 关键词: Collaborative; Research; Evolutionary; Genetics; Invasiveness

Biological invasions represent one of the greatest threats to the preservation of biodiversity. In addition, the economic costs to the USA resulting from damage and control of alien organisms (e.g., zebra mussel, kudzu) amount to more than $100 billion annually. Surprisingly, very little is known about why species that are normally benign may suddenly become noxious pests following their introduction to another country or continent. While the emphasis of previous research recorded in the literature has been on ecological forces, the goal of this research is to explore the role that genetic changes play in the invasion process.Using a combination of approaches, Taylor and Wolfe propose to study the genetics and origin of invasiveness in Silene latifolia, a plant that was introduced to North America from Europe. There are three goals to this research: 1) To examine the history of the invasion process and clarify the genetic consequences of the invasion process in terms of the amount and distribution of genetic variation. 2) To experimentally test for unique environmental patterns in North America that might promote the success of weedy species. 3) To use replicated experimental populations to test whether North American populations are genetically more invasive and the extent to which natural enemies limit invasiveness in Europe. This research will have broad significance for both understanding the origin of invasiveness and providing opportunities for career development of undergraduate students, graduate students and post-docs.

生物入侵是保护生物多样性的最大威胁之一。 此外，美国因损害和控制外来生物而付出的经济代价（例如，斑马贻贝、马格德堡）每年的出口额超过1 000亿美元。 令人惊讶的是，很少有人知道为什么通常是良性的物种在引入另一个国家或大陆后会突然变成有害的害虫。 虽然以前的研究重点记录在文献中的生态力量，本研究的目标是探索的作用，遗传变化发挥在入侵process.Using相结合的方法，泰勒和沃尔夫建议研究的遗传学和起源的入侵，在宽叶蝇子草，植物是从欧洲引进到北美。 本研究有三个目的：1）检查入侵过程的历史，并从遗传变异的数量和分布方面阐明入侵过程的遗传后果。 2)实验测试北美独特的环境模式，可能会促进杂草物种的成功。 3)使用重复的实验种群来测试北美种群是否在遗传上更具侵略性，以及天敌在多大程度上限制了欧洲的侵略性。 本研究对于了解入侵的起源以及为本科生、研究生和博士后的职业发展提供机会具有广泛的意义。