Book of Abstracts (PDF) - International Mycological Association

IMC7 Main Congress Theme I: BIODIVERSITY AND CONSERVATION Posters
451 - Study the effect of different techniques on
diversity of freshwater hyphomycetes in the river Nile
(Upper Egypt)
A. Abdel-Raheem
South Valley University, Faculty of Science, Botany
Department, Sohag 82524, Egypt. - E-mail: a.abdelraheem@mailcity.com
Four different techniques were applied, leaf mapping of
Eucalptus rostrata; randomly leaf sampling; Millipore
filtration; spores in foam, for aquatic hyphomycets
communities study in the river Nile. Triscelophorus
monosporus, Anguillospora longissima, Flagellospora
penicilloides and Tetracladium marchalianum were the
dominant species in the all techniques used. Aquatic
hyphomycetes diversity was high by using leaf mapping
(23 species) and randomly leaf sampling (31 species) but it
was low by using Millipore filtration (11 species) and
spores in foam (8 species) techniques.
452 - Do marine fungi in Egypt form a distinct group ?
M.A. Abdel-Wahab * & H.M. El-Sharouny
Department of Botany, Faculty of Science at Sohag, South
Valley University, Botany Dept., Faculty of Science, Sohag
82524, Egypt. - E-mail: bhhoba@yahoo.com
Diversity of subtropical marine fungi is comparable to that
recorded from temperate and tropical ones. Clear line can
be drawn between marine mycota in temperate and tropics,
however that is not the case when we compare marine
mycota of tropical and subtropical sea shores. Mangroves
in tropical and subtropical locations harbor similar marine
taxa, though specific groups of fungi are found more
frequently in tropical (e.g. Aigialus spp., Lophiostoma spp.,
Pyrenographa xylographoides, Acrocordiopsis patlii and
Quintaria lignatilis) or subtropical (e.g. Lignincola laevis,
Lulworthia grandispora and Periconia prolifica)
mangroves. Mangroves in tropics have a higher fungal
diversity than that in subtropics but several factors may
account for this. Marine mycota diversity in subtropical
habitats varies from one location to another. Mangroves
and sea shores in Egypt are harsh environments (i.e. high
salinity and temperature accompanied with low humidity)
surrounded by desert. Frequent species recorded in samples
collected from the Red Sea coast were different from other
subtropical habitats (e.g. Swampomyces spp. and
Kirschsteiniothelia maritima), while frequently recorded
species from other subtropical locations were completely
absent (e.g. Lignincola laevis, Halorosellinia oceanica and
Massarina spp.). Mycota of Avicennia marina and
Rhizophora sp. in Egypt will be compared with a
discussion for several ecological parameters.
453 - Impact of harvest of tree tops and branches of
Norway spruce on the biodiversity of fungi
J. Allmér * , A. Dahlberg, J. Stenlid & R. Vasiliauskas
Department of forest mycology and patholog, SLU, Box
7026 SE-750 07 Uppsala, Sweden. - E-mail:
johan.allmer@mykopat.slu.se
There has been an increased use of logging waste, tree tops
and branches, in Swedish forestry for biofuel purposes. The
aims of this PhD-project are 1) to identify and describe the
fungal communities associated with fine woody debris
(FWD), 2) to analyse to what degree fungal communities
overlap in composition of species between FWD, coarse
wood debris (CWD) and the litter layer, 3) to analyse
impacts of removal of logging waste on the diversity and
community structure of these fungi and 4) from a fungal
perspective, model the carbon availability in a spruce forest
generation by considering a) the amount and quality influx
of litter from CWD, FWD, cones, needles and the field
layer and b) the decomposition rate of these fractions. I will
present results from the first study, where we have
identified and compared the fungal species composition in
branches, tree tops and stumps, seven years after thinning.
The identification was conducted by analyses of ITS
sequences both directly from wood samples and from pure
cultures. As a comparison, sporocarps were monitored on
the same samples.
454 - Septoria diversity, biogeography and life history
T.V. Andrianova
M.G. Kholodny Institute of Botany, NAS Ukraine,
Tereshchenkivska, 2, Kiev, 01601, Ukraine. - E-mail:
tand@darwin.relc.com
The fungal genus Septoria Sacc. contains about 1000
names and is a paraphyletic group considered as
coelomycetous anamorphs of the Dothideales genus
Mycosphaerella Johanson. Sexual holomorphic species
with Septoria anamorph phenotypes in the life cycle
number about 14%. Most Septoria species are strictly
asexual and very probably had independent evolution.
Cryptic sexuality for some anamorphic species (S.
clematidis-rectae, S. convolvuli, S. cruciatae, etc.) may be
supposed because spermatial synanamorphs are formed in
pure culture. A morphological continuum among Septoria
anamorphs with related holomorphs and anaholomorphs
confirms the aggregative character of the group. Observed
homology of conidiogenous cells, conidia and conidiomata
leads to reassessment of these fungi, as has already
happened with the Cercospora complex of genera. Septoria
species are with wide geographical distribution. Most
common are fungi with a broad Eurasia or Europe and
Middle Asia, Eurasia and North America geographical
distribution. Sporadic dispersion within the limits of
temperate-subhumid, temperate-semiarid, and
submeridional-semiarid natural habitats is inherent to
Book of Abstracts 139