气候变化领域集成服务门户(CCPortal): Growth-defense trade-offs shape population genetic composition in an iconic forest tree species

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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
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).