B
aral
& M
arson
: Deltopyxis triangulispora gen. et sp. nov.
183
9625b) was provided by S. H
ermant
. Two clarify
the phylogenetic placement of Deltopyxis within
the Ascomycota proved impossible with this gene
region, but it allows at least to exclude a closer
relationship with the Orbiliomycetes. This class
is characterized by a signature in the 5.8S rDNA
which was used by S
mith
& J
affee
(2009) as one
of three Orbiliales-specific primers (Orb5.8s1F
,
see Tab. 1
). Deltopyxis differs from this signature
in three positions, while it concurs in this signature
with many if not all of the remaining Ascomycota
from which a sequence is available in GenBank.
However, it must be mentioned that a few basal
members of Orbiliomycetes, from which we got
sequences, differ from this primer signature at
the last position by a base that corresponds to
the remaining Ascomycota.
Ackowledgements
D
agmar
T
riebel
and P
aul
D
iederich
are thanked for sug-
gestions concerning related genera, P. D
iederich
for
the identification of some lichens, and P. D
iederich
and
W
alter
G
ams
for reviewing the manuscript. We are also
thankful to S
ylvie
H
ermant
(National Museum of Natural
History, Luxembourg) for gaining a sequence of Delto
pyxis triangulispora.
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Table 1. Alignment of Orbiliales-specific signature (Orb5.8s1F) in the 5.8S rDNA with the deviating signature of a few
basal Orbiliomycetes and the signature of Deltopyxis and the remaining Ascomycota. Different bases in bold type.
Group
5.8S rDNA
Orbiliomycetes (Orb5.8s1F)
G C A G C G A A A
C
G C G A T A
G T
Orbiliomycetes (basal)
G C A G C G A A A
C
G C G A T A
G G
Deltopyxis and other Ascomycota G C A G C G A A A
T
G C G A T A
A G
