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DOI | 10.1073/pnas.2103162118 |
Growth-defense trade-offs shape population genetic composition in an iconic forest tree species | |
Cope O.L.; Keefover-Ring K.; Kruger E.L.; Lindroth R.L. | |
发表日期 | 2021 |
ISSN | 0027-8424 |
卷号 | 118期号:37 |
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 fastgrowing 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. © 2021 National Academy of Sciences. All rights reserved. |
英文关键词 | Competition; Eco-evolutionary dynamics; Herbivory; Intraspecific variation; Populus tremuloides |
语种 | 英语 |
scopus关键词 | annual plant; article; competition; forest; genotype; herbivory; human; intraspecific variation; natural enemy; natural selection; nonhuman; phenotype; Populus tremuloides; prediction; tree growth |
来源期刊 | Proceedings of the National Academy of Sciences of the United States of America
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/238383 |
作者单位 | Department of Integrative Biology, University of Wisconsin-Madison, Madison, WI 53706, United States; Department of Botany, University of Wisconsin-Madison, Madison, WI 53706, United States; Department of Geography, University of Wisconsin-Madison, Madison, WI 53706, United States; Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, Madison, WI 53706, United States; Department of Entomology, University of Wisconsin-Madison, Madison, WI 53706, United States |
推荐引用方式 GB/T 7714 | Cope O.L.,Keefover-Ring K.,Kruger E.L.,et al. Growth-defense trade-offs shape population genetic composition in an iconic forest tree species[J],2021,118(37). |
APA | Cope O.L.,Keefover-Ring K.,Kruger E.L.,&Lindroth R.L..(2021).Growth-defense trade-offs shape population genetic composition in an iconic forest tree species.Proceedings of the National Academy of Sciences of the United States of America,118(37). |
MLA | Cope O.L.,et al."Growth-defense trade-offs shape population genetic composition in an iconic forest tree species".Proceedings of the National Academy of Sciences of the United States of America 118.37(2021). |
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