Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2103162118 |
Growth–defense trade-offs shape population genetic composition in an iconic forest tree species | |
Olivia L. Cope; Ken Keefover-Ring; Eric L. Kruger; Richard L. Lindroth | |
2021-09-14 | |
发表期刊 | Proceedings of the National Academy of Sciences |
出版年 | 2021 |
英文摘要 | All organisms experience fundamental conflicts between divergent metabolic processes. In plants, a pivotal conflict occurs between allocation to growth, which accelerates resource acquisition, and to defense, which protects existing tissue against herbivory. Trade-offs between growth and defense traits are not universally observed, and a central prediction of plant evolutionary ecology is that context-dependence of these trade-offs contributes to the maintenance of intraspecific variation in defense [Züst and Agrawal, Annu. Rev. Plant Biol., 68, 513–534 (2017)]. This prediction has rarely been tested, however, and the evolutionary consequences of growth–defense trade-offs in different environments are poorly understood, especially in long-lived species [Cipollini et al., Annual Plant Reviews (Wiley, 2014), pp. 263–307]. Here we show that intraspecific trait trade-offs, even when fixed across divergent environments, interact with competition to drive natural selection of tree genotypes corresponding to their growth–defense phenotypes. Our results show that a functional trait trade-off, when coupled with environmental variation, causes real-time divergence in the genetic architecture of tree populations in an experimental setting. Specifically, competitive selection for faster growth resulted in dominance by fast-growing tree genotypes that were poorly defended against natural enemies. This outcome is a signature example of eco-evolutionary dynamics: Competitive interactions affected microevolutionary trajectories on a timescale relevant to subsequent ecological interactions [Brunner et al., Funct. Ecol. 33, 7–12 (2019)]. Eco-evolutionary drivers of tree growth and defense are thus critical to stand-level trait variation, which structures communities and ecosystems over expansive spatiotemporal scales. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/337645 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Olivia L. Cope,Ken Keefover-Ring,Eric L. Kruger,等. Growth–defense trade-offs shape population genetic composition in an iconic forest tree species[J]. Proceedings of the National Academy of Sciences,2021. |
APA | Olivia L. Cope,Ken Keefover-Ring,Eric L. Kruger,&Richard L. Lindroth.(2021).Growth–defense trade-offs shape population genetic composition in an iconic forest tree species.Proceedings of the National Academy of Sciences. |
MLA | Olivia L. Cope,et al."Growth–defense trade-offs shape population genetic composition in an iconic forest tree species".Proceedings of the National Academy of Sciences (2021). |
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