Studies on European rust fungi, Pucciniales: molecular phylogeny, taxonomy, and nomenclature of miscellaneous genera and species in Pucciniastraceae and Coleosporiaceae
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 Pucciniastrum in the Coleosporiaceae and Pucciniastraceae ( Pucciniales ) were taxonomically revi...
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Veröffentlicht in: | Mycological progress 2022-08, Vol.21 (8), Article 64 |
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Zusammenfassung: | 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
Pucciniastrum
in the
Coleosporiaceae
and
Pucciniastraceae
(
Pucciniales
) were taxonomically revised. The ITS analyses confirmed recent familiar concepts based on less variable markers except for the genus
Hyalopsora
. The family
Pucciniastraceae
is characterized by
Abietoideae
(
Abies
,
Tsuga
) aecial hosts.
Pucciniastrum
is described as a genus that consists of host-alternating species forming aecia on needles of
Abies
hosts, with special features of aeciospore morphology, and
Onagraceae
telial hosts. Other genera in the
Pucciniastraceae
are
Calyptospora
,
Melampsorella
, and additional taxa, which are currently provisionally placed in
Pucciniastrum
, but must be revised in future studies.
Pucciniastrum epilobii
(s. lat.), the type species of
Pucciniastraceae
, represents at least two species with different life cycles and urediniospore characteristics and is lecto- and epitypified. The family
Coleosporiaceae
, characterized by
Pinoideae
(
Pinus
) and
Piceoideae
(
Picea
) aecial hosts, contains
Rosaceae
rusts from three well-supported clades represented by three genera,
Thekopsora
,
Quasipucciniastrum
, and
Aculeastrum
gen. nov.
Aculeastrum
is characterized by coarsely arcuate ostiolar peridial cells and infects
Rubus
spp. telial hosts. The following new taxonomic combinations are proposed:
Calyptospora ornamentalis
comb. nov.,
Quasipucciniastrum ochraceum
comb. nov.,
Q. potentillae
comb. nov,
Aculeastrum americanum
comb. nov., and
A. arcticum
comb. nov. The results are discussed with emphasis on future studies in
Pucciniastrum
and the
P. epilobii
complex and on nomenclatural changes necessary for rust fungi due to the Shenzhen Code. |
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ISSN: | 1617-416X 1861-8952 |
DOI: | 10.1007/s11557-022-01810-3 |