Book of Abstracts (PDF) - International Mycological Association

IMC7 Main Congress Theme IV: POPULATION DYNAMICS AND ECOLOGY Posters
925 - Arid element in the lichen flora of Kugitangtau
(Turkmenistan)
Z.H. Abdurahimova
National Institute of Desert, flora and fauna Minister of
Nature Protection of Turkmenistan, Bitarap Turkmenistan
Avenue 15, Ashgabat 744000, Turkmenistan. - E-mail:
zar_zuw.ru@rambler.ru
Kugitangtau is the South-West ridge of the Pamir and Alai
mountains and is a constituent part of the Central Asian
mountain province. In the flora compositions of lichens
have been revieled 240 species, 5 varieties and 12 forms.
The analysis of Kugitangtau lichen flora according to
geographical element have been done and 9 elements have
been singled out: arid (68 species - 28,3% of total species,
multiregional (36-15%), eurogolarktical (30-12,5% boreal
(18-7,5%), hypoarkto-montane (12-5,2%), arkto-highland
(11-4,5%), mediteranean (5-4,5%), montane (12-5%) and
non-moral. Among them the species of arid element prevail
which refer to 21 genera of 10 families. They include 45
species epilities, 19-epigeides, 8-epiphytes and 2 migrating,
but some of them (6 species) can be observed both on the
soil and rocks. Turklmenistan is situated in the arid zone,
therefore it is natural that the highest percent of
Kugitangtau lichen flora includes the arid species. The area
spectrum of the arid element accounts for 18 names. This
element is mainly represented by xeromeridional, desert
and steppe species.The bulk of the arid element is formed
by species with central asian (12), european and asian (9),
asian(8), xero-merideonal-golarktical (7) and golarktical
(6) type of area.
926 - Population genetics of Marasmius oreades in a
Norwegian sand dune ecosystem analyzed by DNA
amplification fingerprinting
E. Abesha, G. Caetano-Anollés & K. Høiland *
Department of Biology, P.O. Box 1066 Blindern, N-0316
Oslo, Norway. - E-mail: klaus.hoiland@bio.uio.no
The population genetics and spatial structure of Marasmius
oreades was studied at the molecular level. Basidiocarps
were collected from fairy rings from the sand dunes on
Peninsula Lista in SW Norway. Samples were collected
after mapping of fairy rings. DNA amplification
fingerprinting (DAF) with arbitrary oligonucleotide
primers was used to study genetic relationships between
the basidiocarp samples. The fungal populations contained
a high number of genotypes and each fairy ring generally
represented a separate genet. Both cluster and phylogenetic
analyses of the DAF products established relationships
between fairy rings and showed that genetically similar
basidiocarps were found close to each other. Overall results
showed, however, only a weak correspondence between
genotype and spatial distribution and no correspondence
between genotype and composition of the surrounding
vegetation.
927 - Impact of monsooning of coffee on fungal
community structure, enzyme profiles and toxins
R. Ahmad 1* , N. Magan 2 & V. Sanchis 3
1 Department of Applied Botany, Mangalore University,
Mangalagangotri 574199, India. - 2 Applied Mycology
Group, Biotechnology Centre, Cranfield University, Silsoe,
Bedford MK45 4DT, U.K. - 3 Food Technology Department,
Lleida University, 25198 Lleida, Spain. - E-mail:
rasheeds_2K@yahoo.co.uk
Monsooning of cofee beans is a semi-solid state
fermentation process occurring over a 8-10 week period
under high humidity conditions of South-west peninsular
India. The moisture content of beans undergoing
monsooning increases by up to 20%, consequently
significant variation in the microbial populations were
observed between the non-monsooned and monsooned
beans. Total populations of bacteria and fungi varied
significantly in these two treatments in both cultivar
Arabica and Robusta. Dominant species included
Aspergillus niger and A. ochraceus. Hydrolytic enzyme
assays showed that there were significant differences
between coffee types indicative of physiological activity of
different fungal communities. The level of ochratoxin in
naturally and controlled monsooneing was less than 5 ppb.
The implications of these results for developing controlled
monsooning systems are discussed.
928 - Promoted growth of cabbage seedlings inoculated
with arbuscular mycorrhizal fungus
M. Akiyama 1* , T. Yoshino 1 , T. Maeda 2 , H. Kakuta 2 & K.
Oosawa 1
1
Department of Horticultural Science, Graduate School of
Agriculture, Hokkaido University, Nishi-9, Kita-9, Kita-ku,
2
Sapporo, 060-8589, Japan. - Plant Ecochemicals
Research Center, 3-1-1, Megumino-kita, Eniwa City, 061-
1371, Japan. - E-mail: acky@res.agr.hokudai.ac.jp
Arbuscular mycorrhizal (AM) colonization promotes the
growth of host plants. Non-host plants (Brassicaceae,
Chenopodiales and Polygonaceae etc.) are not infected and
do not build symbiosis with AM fungus. However, the
growth of cabbage seedlings (Brassica oleracea L. var.
capitata L., cv. Earlyball) was significantly promoted by
the inoculation of AM fungus (Gigaspora margarita),
though no fungal infection of the root was recognized. The
factor of the phenomenon was investigated in terms of the
experiment process, the phosphorus condition of the soil
and the species of AM fungus. The growth of seedlings
was the same to control (no addition of inoculum) in spite
of addition of autoclaved inoculum to rhizosphere. This
observation shows that the extender included in inoculum
did not play a role of source of the nutrients. By addition of
P fertilizer to soil, the growth of seedlings at high-P-soil
was more vigorous than at low-P-soil and growth
promotion by inoculation of AM fungus was additively
Book of Abstracts 279