气候变化领域集成服务门户(CCPortal): Natural selection maintains species despite frequent hybridization in the desert shrub Encelia

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DOI	10.1073/PNAS.2001337117
	Natural selection maintains species despite frequent hybridization in the desert shrub Encelia
	DiVittorio C.T.; Singhal S.; Roddy A.B.; Zapata F.; Ackerly D.D.; Baldwin B.G.; Brodersen C.R.; Búrquez A.; Fine P.V.A.; Flores M.P.; Solis E.; Morales-Villavicencio J.; Morales-Arce D.; Kyhos D.W.
发表日期	2021
ISSN	00278424
起始页码	33373
结束页码	33383
卷号	117 期号:52
英文摘要	Natural selection is an important driver of genetic and phenotypic differentiation between species. For species in which potential gene flow is high but realized gene flow is low, adaptation via natural selection may be a particularly important force maintaining species. For a recent radiation of New World desert shrubs (Encelia: Asteraceae), we use fine-scale geographic sampling and population genomics to determine patterns of gene flow across two hybrid zones formed between two independent pairs of species with parapatric distributions. After finding evidence for extremely strong selection at both hybrid zones, we use a combination of field experiments, high-resolution imaging, and physiological measurements to determine the ecological basis for selection at one of the hybrid zones. Our results identify multiple ecological mechanisms of selection (drought, salinity, herbivory, and burial) that together are sufficient to maintain species boundaries despite high rates of hybridization. Given that multiple pairs of Encelia species hybridize at ecologically divergent parapatric boundaries, such mechanisms may maintain species boundaries throughout Encelia. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Adaptation; Gene flow; Hybrid zone; Reciprocal transplant; Speciation
语种	英语
scopus关键词	article; burial; desert; drought; field experiment; gene flow; herbivory; hybrid zone; natural selection; nonhuman; salinity; shrub; species differentiation; transplantation; Asteraceae; desert climate; ecosystem; gene flow; genetic selection; genetics; hybridization; Mexico; reproductive fitness; wind; water; Asteraceae; Desert Climate; Ecosystem; Gene Flow; Genetic Fitness; Herbivory; Hybridization, Genetic; Mexico; Salinity; Selection, Genetic; Water; Wind
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/179629
作者单位	Department of Integrative Biology, University of California, Berkeley, CA 94720, United States; TruBreed Technologies, Oakland, CA 94609, United States; Department of Biology, California State University - Dominguez Hills, Carson, CA 90747, United States; School of the Environment, Yale University, New Haven, CT 06511, United States; Institute of Environment, Department of Biological Sciences, Florida International University, Miami, FL 33199, United States; Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, United States; Jepson Herbarium, University of California, Berkeley, CA 94720, United States; Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720, United States; Instituto de Ecología, Universidad Autónoma de México, Sonora, Hermosillo, 83000, Mexico; Reserva de la Biosfera el Vizcaíno, Guerrero Negro, Baja California Sur, 23941, Mexico; Benito Juárez s/n, Colonia Barrio La Punta, Bahia Asunción...
推荐引用方式 GB/T 7714	DiVittorio C.T.,Singhal S.,Roddy A.B.,et al. Natural selection maintains species despite frequent hybridization in the desert shrub Encelia[J],2021,117(52).
APA	DiVittorio C.T..,Singhal S..,Roddy A.B..,Zapata F..,Ackerly D.D..,...&Kyhos D.W..(2021).Natural selection maintains species despite frequent hybridization in the desert shrub Encelia.Proceedings of the National Academy of Sciences of the United States of America,117(52).
MLA	DiVittorio C.T.,et al."Natural selection maintains species despite frequent hybridization in the desert shrub Encelia".Proceedings of the National Academy of Sciences of the United States of America 117.52(2021).