Current and historical factors drive variation of reproductive traits in unisexual mosses in Europe:A case study  

作　　者：María Teresa Boquete Zulema Varela JoséAngel Fernández Juan Antonio Calleja Cristina Branquinho Antonina Chilà Nils Cronberg Ricardo Cruz de Carvalho Cristiana Aleixo Belén Estébanez-Pérez Verónica Fernández-González Andrés Baselga Carola Gómez-Rodríguez Juana María González-Mancebo Sebastien Leblond Javier Martínez-Abaigar Nagore G.Medina Encarnación Núñez-Olivera Jairo Patiño Rubén Retuerto Antón Vázquez-Arias Alain Vanderpoorten Harald G.Zechmeister Jesús Ramón Aboal 

机构地区：[1]Department of Evolutionary Ecology,Estación Biológica de Doñana,Consejo Superior de Investigaciones Científicas(CSIC),Sevilla,Spain [2]Department of Functional Biology,CRETUS,Universidade de Santiago de Compostela,Santiago,Spain [3]Global Change and Sustainablility Institute,cE3c-Centre for Ecology,Evolution and Environmental Changes&CHANGE,Faculdade de Ciências,Universidade de Lisboa,Lisboa 1749-016,Portugal [4]Departamento de Biología(Botánica),Facultad de Ciencias,Universidad Autónoma de Madrid,Madrid,Spain [5]Centro de Investigación en Biodiversidad y Cambio Global,Madrid,Spain [6]Department of Biology,Lund University,Lund,Sweden [7]Department of Zoology,Genetics and Physical Anthropology,CRETUS,Universidade de Santiago de Compostela,Santiago,Spain [8]Department of Botany,Ecology and Plant Physiology,Unit of Botany,Universidad de la Laguna,San Cristóbal de La Laguna,Spain [9]UMS Patrinat(OFB,MNHN,CNRS),Paris,France [10]Department of Agriculture and Food,Unit of Botany,Universidad de la Rioja,La Rioja,Spain [11]Department of Agriculture and Food,Unit of Plant Physiology,Universidad de la Rioja,La Rioja,Spain [12]Island Ecology and Evolution Research Group,Instituto de Productos Naturales y Agrobiología(IPNA-CSIC),Tenerife,Spain [13]Botany Institute,University of Liège,Liège,Belgium [14]Department of Botany and Biodiversity Research,University of Vienna,Vienna,Austria

出　　处：《Journal of Systematics and Evolution》2023年第1期213-226,共14页植物分类学报（英文版）

基　　金：supported by the Juan de la Cierva-lncorporacion program from the Spanish Ministry of Science,Innovation and Universities(IJC2018-035018-1);Support provided by the MINECO through the Juan de la Cierva-Incorporacion program(IJCI-2014-19691);the European Union through a Marie Sklodowska-Curie COFUND,Re-searchers'Night and Individual Fellowships Global(MSCA grant agreement No 747238,"UNISLAND");the MICINN through the Ramon y Cajal program(RYC-2016-20506);supported by a postdoctoral research grant awarded by the Autonomous Government of Galicia(Spain);supported by Biodiversity and Ecosystem Services in a Changing Climate(BECC);supported by European Regional Development Fund(ERDF/FEDER);the Spanish Minitry of Science and Innovation,and the Spanish Agencia Estatal de Investigacion(Project PGC2018-093824-B-C42);supported by a postdoctoral research grant from the project MedMossRoofs(PTDC/ATP-ARP/5826/2014)funded by the Foundation for Science and Technology(FCT,Portugal);supported by the FCT through a PhD grant(SFRH/BD/141822/2018).

摘　　要：Unisexual bryophytes provide excellent models to study the mechanisms that regulate the frequency of sexual versus asexual reproduction in plants,and their ecological and evolutionary implications.Here,we determined sex expression,phenotypic sex ratio,and individual shoot traits in 242 populations of the cosmopolitan moss Pseudoscleropodium purum spanning its whole distributional range.We tested whether niche differentiation,sex-specific differences in shoot size,and biogeographical history explained the spatial variation of reproductive traits.We observed high levels of sex expression and predominantly female-biased populations,although both traits showed high intraspecific variation among populations.Sex expression and sex ratio were partly explained by current macroscale environmental variation,with male shoots being less frequent at the higher end of the environmental gradients defined by the current distribution of the species.Female bias in population sex ratio was significantly lower in areas recolonized after the last glacial maximum(recent populations)than in glacial refugia(long-term persistent populations).We demonstrated that reproductive trait variation in perennial unisexual mosses is partially driven by macroscale and historical environmental variation.Based on our results,we hypothesize that sexual dimorphism in environmental tolerance and vegetative growth contribute to sex ratio bias over time,constraining the chances of sexual reproduction,especially in long-term persistent populations.Further studies combining genetic analyses and population monitoring should improve our understanding of the implications of the intraspecific variation in the frequency of sexual versus asexual reproduction in bryophyte population fitness and eco-evolutionary dynamics.

关 键 词：asexual reproduction biogeographic distribution phenotypic sex ratio sex expression sexual dimorphism sexual reproduction 

分 类 号：S91[农业科学—水产科学]