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BEE: Testing the Rapid Evolution of the Determinants of Species Coexistence

BEE：测试物种共存决定因素的快速进化

基本信息

批准号：
1935410
负责人：
Martin Turcotte
金额：
$ 94.08万
依托单位：
University of Pittsburgh
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-03-01 至 2025-02-28
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1935410&HistoricalAwards=false
关键词：
BEE Testing Rapid Evolution Determinants

项目摘要

Two fundamental questions in biology are: how do similar species coexist and how do they drive each other’s evolution? It is becoming clear that the mechanisms that dictate both coexistence and evolution can influence each other and thus both should be studied together. This project fills a critical gap in our knowledge of such interactions by testing why evolution in response to competition sometimes promotes or sometimes hinders species coexistence leading to a loss of biodiversity. The approach is to combine novel experimental evolution methods with analyses from recent ecological theory. This research is important because it will create a stronger integration between two research fields, bridging evolution and community ecology, by providing a deep understanding of the interactions between processes that dictate both the creation and the maintenance of biodiversity. In addition, this project will provide opportunities to increase the participation of underrepresented groups in science as well as create educational research kits, and teacher training workshops, that will be distributed to urban and rural high schools. Well known field observations suggest that evolution in response to competition should promote species coexistence, yet, theoretical models find a greater diversity of outcomes including evolution promoting competitive exclusion. To understand why evolution sometimes hinders or promotes coexistence, this research project will fill critical empirical gaps by conducting manipulative field evolution experiments combined with analyses from the modern coexistence theory framework. Using two common species of duckweed, rapidly reproducing floating aquatic plants, this project will test how evolutionary coexistence dynamics are dictated by niche differences (processes that promote stable coexistence), by competitive ability differences (processes that promote competitive exclusion), and their evolutionary potential (genetic variance). Specifically, it will first quantify variation in niche and competitive ability differences and in their genetic variance among natural populations of duckweed. Then using experimental evolution in field mesocosms, it will test how these properties evolve in response to competition in each population. In addition, this research will quantify the relative importance of niche and competitive ability differences in driving evolutionary coexistence dynamics. Together, this project will test the feedback between competition, evolution, and coexistence acting through niche and competitive ability differences.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

生物学中的两个基本问题是：相似物种如何共存，以及它们如何推动彼此的进化？越来越清楚的是，决定共存和进化的机制可以相互影响，因此两者都应该一起研究。这个项目填补了我们对这种相互作用的认识的一个关键空白，通过测试为什么应对竞争的进化有时会促进或有时会阻碍物种共存，从而导致生物多样性的丧失。方法是将新的实验进化方法与最近生态学理论的分析相结合。这项研究之所以重要，是因为它将通过深入理解决定生物多样性创造和维持的过程之间的相互作用，在两个研究领域--桥梁进化和群落生态学--之间建立更紧密的结合。此外，该项目还将提供机会，增加未得到充分代表的群体对科学的参与，并创建教育研究工具包和教师培训讲习班，分发给城市和农村高中。众所周知的野外观察表明，响应竞争的进化应该促进物种共存，然而，理论模型发现了更多多样性的结果，包括进化促进竞争排斥。为了理解为什么进化有时会阻碍或促进共存，本研究项目将通过进行操纵性的场进化实验并结合现代共存理论框架的分析来填补关键的经验空白。使用两种常见的浮萍，快速繁殖漂浮的水生植物，该项目将测试进化共存动态如何由生态位差异(促进稳定共存的过程)、竞争能力差异(促进竞争排斥的过程)及其进化潜力(遗传差异)决定。具体地说，它将首先量化浮萍自然种群之间生态位和竞争能力差异及其遗传差异的差异。然后，利用场中温带的实验进化，它将测试这些特性是如何随着每个种群的竞争而进化的。此外，本研究将量化生态位和竞争能力差异在推动进化共存动态方面的相对重要性。该项目将通过利基和竞争能力差异测试竞争、进化和共存之间的反馈。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

期刊论文数量（8）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Characterization of microsatellite markers for the duckweed Spirodela polyrhiza and Lemna minor tested on samples from Europe or the United States of America

DOI：
10.1101/2023.02.15.528655
发表时间：
2023-02
期刊：
bioRxiv
影响因子：
0
作者：
Jae E. Kerstetter;Andrea L. Reid;Joshua T. Armstrong;Taylor A. Zallek;Trapper T. Hobble;Martin M. Turcotte
通讯作者：
Jae E. Kerstetter;Andrea L. Reid;Joshua T. Armstrong;Taylor A. Zallek;Trapper T. Hobble;Martin M. Turcotte

Damage and recovery from drift of synthetic-auxin herbicide dicamba depends on concentration and varies among floral, vegetative, and lifetime traits in rapid cycling Brassica rapa

合成生长素除草剂麦草畏的损害和漂移恢复取决于浓度，并且在快速循环的白菜中花、营养和寿命性状之间存在差异

DOI：
10.1016/j.scitotenv.2021.149732
发表时间：
2021
期刊：
Science of The Total Environment
影响因子：
9.8
作者：
Ramos, Sergio E.;Rzodkiewicz, Lacey D.;Turcotte, Martin M.;Ashman, Tia-Lynn
通讯作者：
Ashman, Tia-Lynn

Polyploidy impacts population growth and competition with diploids: multigenerational experiments reveal key life‐history trade‐offs

多倍体影响人口增长以及与二倍体的竞争：多代实验揭示了关键的生命与历史权衡

DOI：
10.1111/nph.18794
发表时间：
2023
期刊：
New Phytologist
影响因子：
9.4
作者：
Anneberg, Thomas J.;O'Neill, Elizabeth M.;Ashman, Tia‐Lynn;Turcotte, Martin M.
通讯作者：
Turcotte, Martin M.

Plant neopolyploidy and genetic background differentiate the microbiome of duckweed across a variety of natural freshwater sources