Book of Abstracts (PDF) - International Mycological Association

IMC7 Main Congress Theme II: SYSTEMATICS, PHYLOGENY AND EVOLUTION Posters
737 - On the presence of ectomycorrhizae in the genus
Sistotrema
R.H. Nilsson 1* , K.-H. Larsson 1 , E. Larsson 1 & U. Kõljalg 2
1 Göteborg University, Botanical Institute, Box 461 ; 40530
Göteborg, Sweden. - 2 University of Tartu, Estonia, Riia
181, EE51014 Tartu, Estonia. - E-mail:
henrik.nilsson@systbot.gu.se
The genus Sistotrema makes up a large part of the
cantharelloid clade of Homobasidiomycete evolution.
While ectomycorrhiza is in strong evidence for other
genera of the cantharelloid clade (like Cantharellus,
Hydnum, and Clavulina), it has hitherto not been recorded
in Sistotrema. Using a combination of fruit-body /
mycelium co-occurrence and molecular analysis (ITS,
nLSU), the present study proves Sistotrema to contain at
least two species capable of engaging in ectomycorrhizal
relationships. Since the cantharelloid clade is a basal
evolutionary lineage in the Homobasidiomycetes, the
presence of ectomycorrhiza forming species in the clade
may provide important clues to the nature of evolution in
the Homobasidiomycetes. Some possible implications to
phylogenetic analysis in the Homobasidiomycetes are
discussed.
738 - The Flora agaricina neerlandica project: the
importance of morphological studies
M.E. Noordeloos * & M.M. Nauta
National Herbarium Netherlands, Universiteit Leiden
branch, P.O.Box 9514, NL-2300 RA Leiden, The
Netherlands. - E-mail: noordeloos@nhn.leidenuniv.nl
The Flora agaricina neerlandica is a critical flora, covering
the agarics and boleti occurring in the Netherlands and
adjacent regions. It is composed of contributions from
various authors, edited by Noordeloos, Kuyper and
Vellinga. It provides keys, extensive descriptions and
illustrations of all taxa, and data on ecology and
distribution. The flora is essentially based on own
observations of the authors on fresh material and herbarium
specimens collected by Dutch mycologists over more than
50 years. The research for the Flora is carried out according
to standard methods and it uses in principal a
morphological species concept, though the results of
molecular and other studies are incorporated if available.
As such the flora is a standard work and can serve as a base
for further research. The importance of thorough,
standardized morphological studies is nowadays often
underestimated by molecular mycologists. The project has
been accelerated by substantial financial support from the
Kits van Waveren Foundation. Five volumes have been
published; the sixth, containing revisions of the
Bolbitiaceae and Coprinus, is currently in print. Volumes
7-11 will follow with an interval of 2-3 years. Current
projects: M. Noordeloos is revising the Boletes; M. Nauta
concentrates on Psathyrella, Cystoderma and Lyophyllum;
M. Noordeloos, A. Verbeken and J. Wisman work on
Russulaceae; various Cortinariaceae genera are under
revision by E. Arnolds, N. Dam and Th. Kuyper.
739 - Anamorph form in the Xylariaceae
L.K. Nugent * , M.A. Whalley, G.P. Sharples & A.J.S.
Whalley
School of Biomolecular Sciences, Liverpool John Moores
University, Byrom street, Liverpool, L3 3AF, U.K. - Email:
beslnuge@livjm.ac.uk
Modern classification of the Xylariaceae relies more
heavily on anamorph form than normally applied in
traditional systematics. The form genera involved can be
highly teleomorph genus specific e.g. Camillea and
Xyloclodium, Astrocystis and Acanthodochium, Poronia,
Podosordaria and Lindquistia. In other genera the
anamorph is not genus specific and, for example
Nodulisporium occurs in Hypoxylon, Daldinia, Entonaema,
Thamnomyces and other genera. Similarily
Geniculosporium is associated with Nemania, Euepixylon,
Anthostomella, Rosellinia and several other genera. The
distinction between Nodulisporium, Periconiella and even
Geniculosporium is not always clear although the
occurrence of these form genera is seen as important in
genus recognition. The relationship between anamorph and
teleomorph and differences between a member of the form
genera are presented based on light and Scanning Electron
Microscope studies. The reliability of anamorph form is
also discussed.
740 - Morphological and molecular study of Lactarius
section Deliciosi in Europe
J. Nuytinck * & A. Verbeken
Ghent University, Dpt. Biology, Group mycology, K.L.
Ledeganckstraat 35, B-9000 Gent, Belgium. - E-mail:
jorinde.nuytinck@rug.ac.be
Representatives of the section Deliciosi are easily
distinguished from other members of the genus Lactarius
by their orange, red or blue latex and the remarkable colour
changes of the context. There is however no consensus on
the species concept. Microscopic features are rather similar
in almost all taxa and the taxonomic value of the striking
field characters is still discussed. Carefully observed
macro- and micromorphological characters are combined
here with molecular data. ITS rDNA sequences are
provided for 68 specimens collected all over Europe. The
resulting cladogram is shown and the monophyly of the
section and species relationships are discussed. A try-out of
AFLP has shown that this technique is suitable to generate
very detailed fingerprints. Eight European species are
clearly supported from these data.
Book of Abstracts 223