Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich.
mehr Informationen...
Multigene phylogeny and taxonomy of the genus Melanconiella (Diaporthales)
Ist Teil von
Fungal diversity, 2012-11, Vol.57 (1), p.1-44
Ort / Verlag
Dordrecht: Springer Netherlands
Erscheinungsjahr
2012
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Molecular phylogenetic analyses of LSU rDNA demonstrate monophyly of the genus
Melanconiella
, and its status as a genus distinct from
Melanconis
is confirmed. Data of macro- and microscopic morphology, pure cultures and phylogenetic analyses of partial SSU-ITS-LSU rDNA,
tef1
and
rpb2
sequences revealed 13 distinct species of
Melanconiella
, six of which are described as new (
M. chrysodiscosporina
,
M. chrysomelanconium
,
M. chrysorientalis
,
M. echinata
,
M. elegans
,
M. meridionalis
).
Melanconiella hyperopta
var.
orientalis
is described as a new variety.
Diaporthe carpinicola
,
D. ellisii
,
D. flavovirens
,
D. hyperopta
and
D. ostryae
are formally combined into
Melanconiella
. The name
Melanconiella chrysostroma
is excluded from
Melanconiella
, as it is an obligate synonym of
Wuestneia xanthostroma
. The type of
Melanconiella
is confirmed as
M. spodiaea
. Several species are lecto- and/or epitypified. A key to all treated species of
Melanconiella
is provided, and the circumscriptions of the genera
Melanconis
and
Melanconiella
are emended. Most
Melanconiella
species revealed by molecular phylogenetic analyses can be well characterised by a suite of morphological traits including ascospore shape, length and width, colour, absence/presence and shape of appendages and the anamorph. Anamorph-teleomorph connections were confirmed by pure culture and DNA data, revealing the presence of a single melanconium- or discosporina-like anamorph for each species. Colony growth was found to be characteristic of the respective species.
Melanconiella
is shown to be confined to the host family
Betulaceae
, and all species are found to be highly host-specific, mostly confined to a single host species. The biodiversity of
Melanconiella
was determined to be centred on the genus
Carpinus
with nine species, five of which have been confirmed on
C. betulus
. Europe appears to be the geographic centre of
Melanconiella
biodiversity.