Book of Abstracts (PDF) - International Mycological Association

IMC7 Friday August 16th Lectures
414 - Pezizomycetes
K. Hansen
Harvard University Herbaria, 22 Divinity Ave.,
Cambridge, MA02138, U.S.A.
Molecular phylogenetic studies in the Pezizomycetes (with
single order Pezizales) have over the past five years
revealed new information on relationships between
families and genera. Pezizales currently includes 14
families, and is composed of at least 3 distinct lineages: A)
Ascobolaceae and Pezizaceae, B) a Discinaceae-
Morchellaceae clade, a Helvellaceae-Tuberaceae-
Karstenellaceae clade and a monotypic Rhizinaceae clade,
C) Ascodesmidaceae, Glaziellaceae, Pyronemataceae,
Sarcoscyphaceae and Sarcosomataceae. The placement of
the monotypic family Carbomycetaceae is unknown.
Lineage C is the most heterogeneous lineage and the
delimitations of all included families are problematic. To
resolve family level relationships within lineage C it will
be necessary to evaluate the largest and presumed
polyphyletic Pyronemataceae in the context of closely
related taxa (Ascodesmidaceae, Glaziellaceae,
Sarcoscyphaceae and Sarcosomataceae). The
Pyronemataceae has been a 'default' family for pezizalean
taxa with uninucleate spores and iodine negative asci,
which lack unifying anatomical characters by which they
could be segregated into putative natural families. The
evolutionary relationships of Ascodesmis and Glaziella,
and the justification of the families Ascodesmidaceae and
Glaziellaceae, or their circumscription, is still uncertain.
Lineages A and B appears to be well-separated
evolutionary lineages and the delimitation of families
within these has to a large extent been clarified.
415 - Sordariomycetes
T. Læssøe
Department of Mycology, Botanical Institute, Oester
Farimagsgade 2D, DK-1353 Copenhagen K, Denmark.
Current classification of higher taxa in the class will be
discussed. The genera currently accepted within the
Xylariaceae will be given brief comments as to their
current status and various problems will be raised. Several
if not most of the so called core genera of the family can
with the present knowledge not be considered
monophyletic.
416 - Laboulbeniomycetes, Spathulosporomycetes and
Ascomycota inc. sed.
O.E. Eriksson
Department of Ecology and Environmental Science, Umeå
University, S-90187 Umeå, Sweden. - E-mail:
ove.eriksson@eg.umu.se
The two classes Laboulbeniomycetes and
Spathulosporomycetes are briefly presented and
Ascomycota with uncertain affinities are discussed.
417 - Integrating biological data within an evolutionary
framework
I. Carbone
Center for Integrated Fungal Research (CIFR), North
Carolina State University, Box 7567 - Partners II Building,
Raleigh, NC 27695-7567, U.S.A.
The rapidly expanding field of bioinformatics is providing
researchers with many tools and techniques for building,
updating, and accessing biological data. With the
exponentially increasing amounts of data from SNPs, gene
expression profiling, proteomics, clinical and
epidemiological studies, the focus is now on developing the
conceptual and practical tools for understanding and
exploring biological data to its fullest potential. One of the
biggest challenges facing researchers is the move away
from studying one gene or one molecular data set at a time
to looking at multiple genes or multiple genetic and
phenotypic data sets simultaneously, in a holistic fashion.
The integration of multiple molecular and phenotypic data
sets is accelerating the pace of biological discoveries and
our overall understanding of biological systems.
Computational methods are being developed to allow
researchers to make the critical link between genotype and
phenotype and in the process distinguish between
associated and causative genetic variation. Evolutionary
theory is at the core of these computational algorithms and
is providing the conceptual bridge between bioinformatics
and biological inference.
418 - The utility of haplotypes in evolutionary analysis
A.G. Clark
Penn State University, Dpet Biology/University Park, PA,
U.S.A. - E-mail: c92@psu.edu
Genetic variation in natural populations is organized on
chromosomes in linked sets that often exhibit some
correlated structure or linkage disequilibrium. When
considering sets of adjacent polymorphic sites, it is often of
Book of Abstracts 129