Geographical vs. ecological diversification in Carex section Phacocystis (Cyperaceae): Patterns hidden behind a twisted taxonomy  

作　　者：Carmen Benitez-Benitez Santiago Martin-Bravo Charlotte S.Bjora Sebastian Gebauer Andrew L.Hipp Matthias H.Hoffmann Modesto Lucefio Tyril M.Pedersen Anton Reznicek Eric Roalson Polina Volkova Okihito Yano Daniel Spalink Pedro Jimenez-Mejias 

机构地区：[1]Botany Area,Department of Molecular Biology and Biochemical Engineering,Universidad Pablo de Olavide,Ctra de Utrera km 1 sn,Seville 41013,Spain [2]Natural History Museum,University of Oslo,P.O.Box 1172 Blindern,Oslo 0318,Norway [3]Martin Luther University Halle-Wittenberg,Geobotany and Botanical Garden,Am Kirchtor 3,Halle 06108,Germany [4]The Morton Arboretum,4100 Illinois Route 53,Lisle,IL 60532,USA [5]The Field Museum,1400S Lake Shore Dr,Chicago,IL 60605,USA [6]University of Michigan Herbarium,3600 Varsity Dr,Ann Arbor,Ml 48108-2228,USA [7]School of Biological Sciences,Washington State University,Pullman,WA 99164,USA [8]Moscow South-West High School,Moscow,Russian Federation [9]Papanin Institute for Biology of Inland Waters RAS,Borok,Yaroslavl Region 152742,Russia [10]Faculty of Biosphere-Geosphere Science,Okayama University of Science,Okayama 700-0005,Japan [11]Department of Ecology and Conservation Biology,Texas A&M University,534 John Kimbrough Blvd,College Station,TX 77943,USA [12]Department of Biology,Universidad Autonoma de Madrid,Campus Cantoblanco,Madrid 28049,Spain

出　　处：《Journal of Systematics and Evolution》2021年第4期642-667,共26页植物分类学报（英文版）

基　　金：support by the Spanish Ministry of Economy and Competitiveness(project CGL2016-77401-P);the Regional Government of Madrid,Spain(Macondo SI1/PIJ/2019-00333);C.B.B.was supported by a Predoctoral Fellowship Program grant from the Ministry of Science,Innovation and Universities(FPU16/01257);The work of P.V.was supported by the Russian Foundation for Basic Research(project 19-04-01090-a);was held within the state assignment of IBIW RAS(theme AAAA-A18-118012690095-4);.D.S.was supported in part through USDA National Institute of Food and Agriculture(Mclntire Stennis#101869).

摘　　要：Carex section Phacocystis(Cyperaceae)is one of the most diverse and taxonomically complex groups of sedges(between 116 and 147 species),with a worldwide distribution in a wide array of biomes.It has a very complicated taxonomic history,with numerous disagreements among different treatments.We studied the biogeography and niche evolution in a phylogenetic framework to unveil the relative contribution of geographical and ecological drivers to diversification of the group.We used a large species sampling of the section(82%of extant species)to build a phylogeny based on four DNA regions,constrained with a phylogenomic HybSeq tree and dated with six fossil calibrations.Our phylogenetic results recovered section Phacocystis s.s.(core Phacocystis)as sister to section Praelongae.Ancestral area reconstruction points toward the N Pacific as the cradle for the crown diversification of section Phacocystis during the Middle Miocene.Wide distributions were recurrently inferred across deep nodes.Large Northern Hemisphere lineages with geographical congruence were retrieved,pointing toward the importance of allopatric divergence at deep phylogenetic levels,whereas within-area speciation emerges as the predominant pattern at shallow phylogenetic level.The Southern Hemisphere(Neotropics,SW Pacific)was colonized several times from the Northern Hemisphere.The global expansion of Carex section Phacocystis did not entail major ecological changes along the inner branches of the phylogeny.Nevertheless,ecological differentiation seems to gain importance toward recent times.

关 键 词：allopatric speciation biogeographic stochastic mapping BIOGEOGRAPHY BIOME niche evolution phylogeny SEDGES sympatric speciation 

分 类 号：Q94[生物学—植物学]