Book of Abstracts (PDF) - International Mycological Association

IMC7 Main Congress Theme IV: POPULATION DYNAMICS AND ECOLOGY Posters
1049 - Survival of insect target and biocontrol fungus in
a greenery plantation
S. Vestergaard * , C. Nielsen, S. Harding & J. Eilenberg
Royal Veterinary and Agricultural University,
Thorvaldsensvej 40, 1871 Frb. C, Denmark. - E-mail:
sve@kvl.dk
The insect family Curculionidae contains some of the
economically most important pest insect species in
greenery production for Christmas decorations in Denmark.
In particular, the two species Strophosoma
melanogrammum and S. capitatum are important pest
species. At present no chemical treatment of these weevils
is allowed in Denmark. Biological control including the use
of insect pathogenic fungi from Hyphomycetes may thus
provide a potential to minimise the damage caused by these
weevils. Isolates of the insect pathogenic fungi
Metarhizium anisopliae Beauveria bassiana and
Paecilomyces spp. were studied in the laboratory and field.
In the laboratory, all tested isolates were able to infect and
cause mycosis in both adults and larvae of S.
melanogrammum and S. capitatum. Based on the results
from the laboratory bioassays, isolates were chosen for
release under field conditions in an Abies procera
plantation, where different application strategies were used.
Spatial-temporal distribution of the released fungus in the
soil was monitored by cfu per g soil. Weekly sampling
from emergence traps monitored survival of adult weevils.
Adults were collected, counted and determined to species
level and incubated individually in plastic cups to estimate
the prevalence of the applied fungus as well as the
prevalence of natural infections. Preliminary results proved
that populations of weevils in the treated plots were
reduced significantly.
1050 - Do Piceirhiza bicolorata mycobionts form both
ecto- and ericoid mycorrhizas?
L. Villarreal-Ruiz 1* , I. Anderson 2 & I.J. Alexander 1
1 Department of Plant and Soil Science, University of
Aberdeen, Cruickshank Building St Machar Drive,
Aberdeen, AB24 3UU, Scotland, U.K. - 2 Soil Quality &
Protection, The Macaulay Institute, Craigiebuckler,
Aberdeen, AB15 8QH, Scotland, U.K. - E-mail:
l.virl@abdn.ac.uk
Ectomycorrhizas of the Piceirhiza bicolorata morphotype
were found commonly associated with Pinus sylvestris
seedlings and mature trees in Glen Tanar Native Pinewood,
Northeast Scotland. Fungal isolates from P. bicolorata
mycorrhizas are thought to be part of the Hymenoscyphus
ericae aggregate, and this raises the possibility that they
form mycorrhizas with both the pine trees and the
understorey ericoid vegetation. In this study, strains from
P. bicolorata were isolated from soil cores collected in a
160 year-old natural stand. The mycobiont was cultured
and identified by extracting genomic DNA and sequencing
the PCR- amplified ITS regions. Phylogenetic analysis
showed that our isolate grouped in clade 4 of Vrålstad et al.
(New Phytol., 2002) along with many other isolates from P.
bicolorata-type ectomycorrhizas, including Phialophora
finlandia. Mycorrhizal synthesis were performed to test the
ability of our isolate to form ECM and ERM on P.
sylvestris seedlings and ericoid plants respectively, and to
cross infect between P. sylvestris + P. bicolorata
(previously synthesized) and Vaccinium myrtillus. The
synthesis with Scots Pine seedlings produced black
morphotypes with or without hyaline tips and with
emanating hyphae. Pure culture synthesis with V. myrtillus
seedlings produced typical ERM: these were also produced
in the cross infection experiments. In both cases the growth
of Vaccinium plants forming ERM was stimulated relative
to the growth of uninfected plants.
1051 - Strategies for sustainable land management:
quarry recovered through truffle-culture
M. Vinay * , L. Baciarelli Falini & M. Bencivenga
Dip. Biologia vegetale e biotecnologie agroambientali-
Università di Perugia, Borgo xx giugno 74 06121 Perugia,
Italy. - E-mail: mavinay@tin.it
Building materials come from quarries. The opening of a
quarry is a geological damage and it causes the complete
destruction of vegetation. Italian laws provide for each
open quarry project an environmental recovery and
steadying plan through soil-modelling and vegetationplanting
in order to repair the damage and avoid
subsequent trouble. A concrete case of quarry recovery
through truffle-cultivation is analysed.
1052 - The identification and frequency of occurrence
of higher filamentous marine fungi on mangroves in a
south Florida mangle
C. Vogel 1* , S. Schatz 2 , H. Laubach 3 & A. Rogerson 1
1 Nova Southeastern University, College of Oceanography,
8000 North Ocean Drive, Dania FL 330044, U.S.A. -
2 Nova Southeastern University, Colleges of Optometry and
Oceanography, Davie FL 33314, U.S.A. -
3 Nova
Southeastern University, College of Medical Sciences,
Davie FL 33314, U.S.A. - E-mail: vogelc@nova.edu
Little is known regarding the occurrence and distribution of
the higher filamentous fungi on mangroves in South
Florida, USA. Previous studies have demonstrated that
marine fungi are an important degradative component and
assume an important role in nutrient recycling systems in
estuarine and near-shore ecosystems. The purpose of this
study was to collect, identify and prepare a key to the
higher filamentous fungi occurring in the mangle of J. U.
Lloyd State Park on the southeast coast of Florida, USA.
Over a period of ten months 33 species were identified
including 1 Basidiomycete, 8 Deuteromycetes, and 24
Book of Abstracts 317