Deep phylogeographic splits and limited mixing by sea surface currents govern genetic population structure in the mangrove genus Lumnitzera(Combretaceae)across the Indonesian Archipelago  

作　　者：Jeprianto Manurung Blanca M.Rojas Andrés Christopher D.Barratt Jan Schnitzler Bror F.Jönsson Ruliyana Susanti Walter Durka Alexandra N.Muellner-Riehl 

机构地区：[1]Department of Molecular Evolution and Plant Systematics&Herbarium(LZ),Institute of Biology,Leipzig University,Johannisallee 21-23,Leipzig D-04103,Germany [2]German Centre for Integrative Biodiversity Research(iDiv)Halle-Jena-Leipzig,Puschstrasse 4,Leipzig D-04103,Germany [3]Plymouth Marine Laboratory,Prospect Place,Plymouth PL13DH,UK [4]Research Center for Biology,National Research and Innovation Agency,Jl.Raya Jakarta-Bogor km,46,Bogor,Indonesia [5]Department of Community Ecology,Helmholtz Centre for Environmental Research—UFZ,Theodor-Lieser-Str.4,Halle D-06120,Germany

出　　处：《Journal of Systematics and Evolution》2023年第2期299-314,共16页植物分类学报（英文版）

基　　金：Ina Geier and Martina Herrmann(UFZ)for support in ddRAD library preparation.Jeprianto Manurung was funded by a PhD grant from the German Academic Exchange Service(DAAD project no.91653688);hosted by Alexandra Muellner-Riehl.Jan Schnitzler and Christopher Barratt were supported by the German Centre for Integrative Biodiversity Research(iDiv)Halle-Jena-Leipzig funded by the German Research Foundation(DFG—FZT 118).Open Access funding enabled and organized by Projekt DEAL.

摘　　要：The Indonesian Archipelago accommodates the largest mangrove area in Southeast Asia and possesses the world's richest composition of mangrove species.The archipelago comprises areas of the biogeographic regions Sunda and Wallacea,separated by Wallace's line.Here,we used the true mangrove species Lumnitzera littorea and Lumnitzera racemosa as a study case for understanding the effects of phylogeographic history,sea surface currents,and geographical distance on genetic diversity and genetic structure.We sampled 14 populations of L.littorea(N=106)and 21 populations of L.racemosa(N=152)from Indonesia and used 3122 and 3048 SNP loci,respectively,genotyped using the ddRADseq approach.We assessed genetic diversity,genetic structure,and effective dispersal of the populations and related them to geographical distance and sea surface currents.Our study revealed low levels of genetic variation at the population level in Lumnitzera.Pronounced genetic differentiation between populations indicated two phylogroups in both species.While in L.littorea the two phylogroups were largely separated by Wallace's line,L.racemosa showed a northwest vs.southeast pattern with strong mixture in Wallacea.Our findings provide novel insights into the phylogeography of the mangrove genus Lumnitzera and the role of sea surface currents in the Indonesian Archipelago.

关 键 词：ddRADseq genetic diversity genetic structure Indonesian Archipelago isolation by distance Lumnitzera racemosa Lumnitzera littorea sea surface currents 

分 类 号：Q94[生物学—植物学]