03380nas a2200181   4500008004100000022002500041245017300066210006900239260001600308490000700324520273900331100001703070700001403087700001703101700001603118700001503134856004903149       2022                        eng d  a1617-416X, 1861-895200aStudies on European rust fungi, Pucciniales: molecular phylogeny, taxonomy, and nomenclature of miscellaneous genera and species in Pucciniastraceae and Coleosporiaceae0 aStudies on European rust fungi Pucciniales molecular phylogeny t  cJul-05-20220 v213 a<p><jats title="">Abstract</jats><jats p="">Using molecular phylogenetic analyses (ITS) and morphological data obtained from light and electron microscopy, some European and North American species and genera placed or formerly placed in the genus <jats italic="">Pucciniastrum</jats> in the <jats italic="">Coleosporiaceae</jats> and <jats italic="">Pucciniastraceae</jats> (<jats italic="">Pucciniales</jats>) were taxonomically revised. The ITS analyses confirmed recent familiar concepts based on less variable markers except for the genus <jats italic="">Hyalopsora</jats>. The family <jats italic="">Pucciniastraceae</jats> is characterized by <jats italic="">Abietoideae</jats> (<jats italic="">Abies</jats>, <jats italic="">Tsuga</jats>) aecial hosts. <jats italic="">Pucciniastrum</jats> is described as a genus that consists of host-alternating species forming aecia on needles of <jats italic="">Abies</jats> hosts, with special features of aeciospore morphology, and <jats italic="">Onagraceae</jats> telial hosts. Other genera in the <jats italic="">Pucciniastraceae</jats> are <jats italic="">Calyptospora</jats>, <jats italic="">Melampsorella</jats>, and additional taxa, which are currently provisionally placed in <jats italic="">Pucciniastrum</jats>, but must be revised in future studies. <jats italic="">Pucciniastrum epilobii</jats> (s. lat.), the type species of <jats italic="">Pucciniastraceae</jats>, represents at least two species with different life cycles and urediniospore characteristics and is lecto- and epitypified. The family <jats italic="">Coleosporiaceae</jats>, characterized by <jats italic="">Pinoideae</jats> (<jats italic="">Pinus</jats>) and <jats italic="">Piceoideae</jats> (<jats italic="">Picea</jats>) aecial hosts, contains <jats italic="">Rosaceae</jats> rusts from three well-supported clades represented by three genera, <jats italic="">Thekopsora</jats>, <jats italic="">Quasipucciniastrum</jats>, and <jats italic="">Aculeastrum</jats> gen. nov. <jats italic="">Aculeastrum</jats> is characterized by coarsely arcuate ostiolar peridial cells and infects <jats italic="">Rubus</jats> spp. telial hosts. The following new taxonomic combinations are proposed: <jats italic="">Calyptospora ornamentalis</jats> comb. nov., <jats italic="">Quasipucciniastrum ochraceum</jats> comb. nov., <jats italic="">Q. potentillae</jats> comb. nov, <jats italic="">Aculeastrum americanum</jats> comb. nov., and <jats italic="">A. arcticum</jats> comb. nov. The results are discussed with emphasis on future studies in <jats italic="">Pucciniastrum</jats> and the <jats italic="">P. epilobii</jats> complex and on nomenclatural changes necessary for rust fungi due to the Shenzhen Code.</jats></p>
1 aScholler, M.1 aBraun, U.1 aBuchheit, R.1 aSchulte, T.1 aBubner, B.  uhttp://dx.doi.org/10.1007/s11557-022-01810-3