Phylogenetic relationships of five genera of Xylariales and Rosasphaeria gen.nov.(Hypocreales)  

作　　者：Walter M.Jaklitsch Hermann Voglmayr 

机构地区：[1]Department of Systematic and Evolutionary Botany,Faculty Centre of Biodiversity,University of Vienna,Rennweg 14,1030 Wien,Austria

出　　处：《Fungal Diversity》2012年第1期75-98,共24页真菌多样性（英文）

摘　　要：Eight inconspicuous non-stromatic perithecial fungi immersed in plant tissue are assessed with respect to their morphology,ecology and phylogenetic position.Emphasis is laid on two genera now and then placed in the family Hyponectriaceae,Xylariales:Leiosphaerella with its type species L.praeclara occurring on Vaccinium,and Pseudomassaria with its type species P.chondrospora occurring on Tilia.In molecular phylogenetic analyses of LSU and ITS sequences,the generic types of these genera are closely related,but their familial affiliation within Xylariales remains unresolved.Pseudomassaria sepincoliformis clusters with P.chondrospora,whereas P.fallax is not congeneric with Pseudomassaria and P.lycopodina is combined in Leiosphaerella despite its apiospores.Three species thought to belong to Leiosphaerella are re-assessed:L.moravica that occurs on Rosa,is disposed in the new genus Rosasphaeria,which is close to Eucasphaeria in the Niessliaceae(Hypocreales),according to multi-gene phylogenetic analyses(ITS,LSU,rpb2 and tef1).For L.vexata the genus Pseudomassariella is revived.A Leiosphaerellalike fungus on Lycopodium is described as the new species Monographella lycopodina.In addition the phylogenetic relationships of two fungi forming superficial stromata are here clarified:Collodiscula japonica belongs to the Xylariaceae,while Melogramma campylosporum may currently be interpreted as representing a family of its own,the Melogrammataceae.

关 键 词：Collodiscula Eucasphaeria.Leiosphaerella Massarina Melogramma Metasphaeria New genus Phylogenetic reconstruction Pseudomassaria Pseudomassariella SYSTEMATICS 

分 类 号：Q94[生物学—植物学]