RAD sequencing,morphometry and synecology clarify the taxonomy of the Melica ciliata(Poaceae)complex in France and Poland  

作　　者：Sergio Castro Audrey Muratet Magdalena Szczepaniak Julie Nguefack Laurent Hardion 

机构地区：[1]Laboratoire Image Ville Environnement(LIVE),CNRS,University of Strasbourg,Strasbourg,France [2]W.Szafer Institute of Botany,Polish Academy of Sciences,Lubicz 4631-512 Kraków,Poland [3]Conservatoire Botanique d'Alsace-Lorraine,Erstein,France

出　　处：《Journal of Systematics and Evolution》2023年第5期764-775,共12页植物分类学报（英文版）

摘　　要：Melica(Poaceae)consist of about 92 species distributed across temperate regions of the world.Within section Dalycum,Melica ciliata sensu lato forms a taxonomic complex of several species and subspecies with clinal morphological variation causing conflicting identifications.To resolve taxonomic confusion,we used three complementary approaches,through molecular,morphological,and phytoecological analyses.The double-digest restriction-associated DNA markers significantly support the monophyly of three taxa:(i)the Mediterranean Melica magnolii,(ii)the Eurasian Melica transsilvanica subsp.transsilvanica,and(iii)the west-European M.ciliata subsp.glauca.This differentiation is corroborated by the analysis of 22 morphometric variables.Furthermore,phytoecological analysis of 221 floristic inventories revealed habitat distinctions among these taxa.Our approach of integrative taxonomy argues for a specific distinction for these three taxa,and we include a key to separate these forms.These new molecular data on the section Dalycum,subsection Ciliatae,call for further phylogenetic analyses including samples of M.ciliata subsp.ciliata and other East-Mediterranean and South African taxa.

关 键 词：double-digest restriction site-associated DNA sequencing(ddRAD) Melica ciliata morphology species delimitation SYNECOLOGY TAXONOMY 

分 类 号：Q94[生物学—植物学]