Book of Abstracts (PDF) - International Mycological Association

IMC7 Main Congress Theme II: SYSTEMATICS, PHYLOGENY AND EVOLUTION Posters
657 - Notes on the tribes Leucocoprineae and Lepioteae
(higher basidiomycetes) of Israel mycobiota
M.Ya. Didukh
M. G. Kholodny Institute of Botany, National Academy of
Sciences of Ukraine, 2 Tereshchenkivska Str., Kyiv, MSP,
252601 Ukraine, Ukraine. - E-mail: manuuzz@yahoo.com
Agaricaceae (Fr.) Cohn has been of particular interest to
scientists all over the globe for years due to peculiarities of
its representatives ecology, biochemistry, biotechnological
application. However, for some areas - Israel in particular -
even the first step of study of this family - revision of
species diversity - has not been done yet. Out of the four
tribes of the family only Agariceae Pat. has been revised
(Wasser & Binyamini, 1992; Wasser, 1996, 1998, 2002).
The Leucocoprineae Sing. and Lepioteae Fay. in Israel
tribes are in need of critical study and inventory of the
species content. Analysis of existing fragmentary data in a
number of articles (Reichart & Avizohar-Hershenzon 1955,
1959; Avizohar-Hershenzon, 1967; Binyamini, 1975; 1976;
1984) showed that up to now 15 species (9 of genus
Lepiota, 1 of Leucocoprinus, 1 of Chlorophyllum, 1 of
Leucoagaricus and 3 of Macrolepiota) are registered. We
report of seven new for the Israel territory species and
intraspecies taxa found during 2001-2002 growing seasons:
Chamaemyces fracidus (Fr.) Donk.; Chamaemyces fracidus
var. pseudocastaneus Bon et Boiff.; Lepiota
brunneolilacea Bon et Boiff.; Leucoagaricus littoralis
(Meiner) Bon et Boiff.; Leucoagaricus wichanskyi (Pil.)
Bon et Boiff.; Leucoagaricus carneifolius (Gill.) S.
Wasser; Macrolepiota fuligineosquarrosa Malenc.
658 - Out of Gondwana? - Relationship between
European and African Lactarius sp. of the subgenera
Lactifluus and Lactariospsis
U. Eberhardt 1* & A. Verbeken 2
1 SLU, Dept. of Forest Mycology and Pathology, Box 7026,
SE-75007 Uppsala, Sweden. - 2 Gent University, Dept.
Biology, Group Mycology, K.L.Ledeganckstraat 35, B-
9000 Gent, Belgium. - E-mail:
ursula.eberhardt@mykopat.slu.se
The forests of tropical Africa are remarkably rich in
Russulales species, particularly in species displaying what
are considered to be conservative characters. Therefore, the
hypothesis was put forward that the Russulales evolved on
the Gondwana continent and spread from there to the
northern hemisphere. The subgenera Lactifluus and
Lactariopsis of the genus Lactarius belong to these
supposedly primitive groups with a strong tropical African
foothold, in terms of species numbers, infra-subgeneric
diversity, and distribution. Both subgenera are also
relatively well-represented in tropical lowlands of Central-
and South-America. In contrast, only few and
morphologically outstanding European Lactarius species
were assigned to these subgenera. In molecular
phylogenetic analysis, these species were indeed placed on
very long branches, separated from the majority of
European species that are comparatively closely related.
Molecular phylogenetic analysis methods were applied to
investigate the relationship between selected European and
tropical African species of the subgenera Lactifluus and
Lactariopsis and to test the provisional infra-subgeneric
classification of African Lactarius species that was entirely
based on morphological characters.
659 - The phylogenetic position of the genera Lepraria
and Leproloma
S. Ekman 1* & T. Tønsberg 2
1 Department of Botany, University of Bergen, Allégaten 41,
N-5007 Bergen, Norway. - 2 Museum of Botany, University
of Bergen, Allégaten 41, N-5007 Bergen, Norway. - Email:
stefan.ekman@bot.uib.no
The phylogenetic position of the entirely asexually
reproducing genera Lepraria and Leproloma was
investigated using sequence data from the ITS1-5.8S-ITS2
and small subunit (SSU) nuclear ribosomal DNA.
Phylogenetic reconstructions were carried out using a
Bayesian Markov chain Monte Carlo (MCMC) tree
sampling technique and an alignment-free maximum
likelihood distance method. The results indicate that most
species currently referred to the genera Lepraria and
Leproloma form a single, monophyletic group. This
monophyletic group is sister to a well-known group of
lichens in the Stereocaulaceae (Lecanorales,
Lecanoromycetes, Ascomycota), namely Stereocaulon and
Muhria. Leproloma is polyphyletic and nested within
Lepraria s. str. A few species, however, do not belong in
Lepraria s. str., viz. Lepraria flavescens, which belongs in
Lecanora, and Lepraria lesdainii and L. obtusatica, the
positions of which are currently unknown.
660 - Toninia species in Hungary
E. Farkas 1* & L. Lökös 2
1 Institute of Ecology and Botany, Hungarian Academy of
Sciences, H-2163 Vácrátót, Hungary. - 2 Department of
Botany, Hungarian Natural History Museum, H-1476
Budapest, Pf. 222., Hungary. - E-mail:
efarkas@botanika.hu
Species of Toninia are dominant in the sandy steppe and
rocky grassland areas in Hungary. In the Hungarian lichen
flora of Verseghy (1994) nine species were listed under
Toninia: T. candida, T. caradocensis, T. cinereovirens, T.
coeruleonigricans, T. lobulata, T. toniniana, T. tristis, T.
tumidula, T. zsakii. A revision of the c. 300 Hungarian
Toninia specimens was highly needed, since the Toninia
monograph of Timdal (1991) was not considered by
Verseghy. Three of the above species are now belong to
other genera: Hypocenomyce caradocensis (syn. T.
Book of Abstracts 199