Phylogenetic relationships within Pyrenodesmia sensu lato and the role of pigments in its taxonomic interpretation  

作　　者：Ivan Frolov Jan Vondrák Jiří Košnar Ulf Arup 

机构地区：[1]Russian Academy of Sciences,Ural Branch:Institute Botanic Garden,Vosmogo Marta 202a st.,Yekaterinburg 620144,Russia [2]Department of Botany,Faculty of Science,University of South Bohemia,Branišovská1760,ČeskéBudějovice CZ-37005,Czech Republic [3]Institute of Botany of the Czech Academy of Sciences,Zámek 1,Průhonice CZ-25243,Czech Republic [4]Botanical Museum,Lund University,Box 117,Lund SE-22100,Sweden

出　　处：《Journal of Systematics and Evolution》2021年第3期454-474,共21页植物分类学报（英文版）

基　　金：supported by the Russian Foundation for Basic Research(project No.16-04-01488).

摘　　要：Most lichens of the family Teloschistaceae(Ascomycota)produce yellow-orange-red anthraquinone pigments.However,the genus Pyrenodesmia encompasses species in which anthraquinones are absent and replaced by a gray pigment Sedifolia-gray.It was shown recently that these species are related to taxa with both anthraquinones and Sedifolia-gray(Caloplaca xerica group,C.haematites group,and C.cretensis)and to species with a brown pigment instead of both anthraquinones and Sedifolia-gray(C.demissa,C.obscurella,and C.reptans).Nevertheless,relationships between mentioned anthraquinone-containing and anthraquinone-lacking species remained unclear.In total,8 DNA loci from 41 species were used here to resolve these uncertainties.We concluded that C.demissa,C.obscurella,and C.reptans are rather distant from the core of Pyrenodesmia,and we place them outside of Pyrenodesmia sensu lato.Within Pyrenodesmia sensu lato,three lineages were revealed and recognized on a generic level:the genus Pyrenodesmia sensu stricto(21 species),the genus Kuettlingeria(14 species),which is resurrected here,and the genus Sanguineodiscus(4 species),which is newly described here.The genus Pyrenodesmia includes taxa that never contain anthraquinones,but Sedifolia-gray.It matches with the former C.variabilis group.Taxa of the genera Kuettlingeria and Sanguineodiscus have anthraquinones in their apothecia and Sedifolia-gray in their thalli.The genus Kuettlingeria includes the former C.xerica group plus C.cretensis and C.diphyodes.The genus Sanguineodiscus includes the former C.haematites group and C.bicolor.The identity of Kuettlingeria(Caloplaca)diphyodes was clarified and the name Pyrenodesmia helygeoides was resurrected.Twenty-four new combinations were proposed.

关 键 词：ANTHRAQUINONES Caloplaca haematites group Caloplaca variabilis group Caloplaca xerica group Kuettlingeria Pyrenodesmia sensu stricto Sanguineodiscus Sedifolia-gray Teloschistaceae 

分 类 号：Q94[生物学—植物学]