12.04.2018

20 April - Lecture: AT/GC Compositional Genome Evolution in Lower Versus Higher Vertebrates

Radka Symonova will hold a guest lecture on 20 April, 2018, at 14:00 in the NW Faculty's Hörsaal 421 on the topic of "AT/GC Compositional Genome Evolution in Lower Versus Higher Vertebrates". The Department of Life Sciences invites you to attend!

Barrierefreiheit: Kurzbeschreibung des Bildes

Radka SYMONOVA ist Leiterin der Eco-Evo Cytogenomics Group, Faculty of Science, University of Hradec Kralove.

Abstract:
Mammalian and avian genomes are extremely complex with finely coordinated functions. Surprisingly, myteam disclosed the mammalian way of genome base (A, T, G, C) organization in an archaic fish lineage gars. Garspossess GC- and AT-rich regions altering on their chromosomes and in DNA sequence as mammals do. Other fishes,amphibians and most reptiles have a homogenous AT/GC genomic distribution. This sheds new light on vertebrategenome evolution. Hitherto, the AT/GC heterogeneity was considered an adaptation to increased body temperature ofamniotes stabilizing gene-rich (GC-rich) regions. However, gars are anamniotes and their body temperature dependson the environment as in other fishes and amphibians. Interestingly, bowfin, the closest relative of gars, possess thetypical AT/GC homogenous organisation. Genomic base organization is driven by numerous factors: recombinationrate, mutations, DNA methylation, environmental conditions, karyotype, metabolic rate, life history, physicalchemicalproperties of DNA determining DNA bendability, nucleosome formation potential, chromatin structure andtranscription activity. The exact interplay of these factors remains unclear and in anamniotes only a limited number ofspecies was tested for a few of these factors. The proposed and so far tested hypotheses did not involve gars and theirGC heterogeneity. One possible explanation might be convergent evolution between gars and mammals. Based on therobust fossil evidence, gars and early tetrapods could have faced similar selective pressures and converged on similarsolutions. However, there are several other levels of this extremely complex issue that have to be taken into account tostart understanding the origin of the AT/GC heterogeneity in the almost extinct lineage of gars and in vertebratesgenerally.

Berninger, Ulrike-Gabriele Univ.-Prof. Dr.

AG-Leiterin

Universität Salzburg

Hellbrunnerstrasse 34

Tel: +43 662 8044 5647

E-mail to Berninger, Ulrike-Gabriele Univ.-Prof. Dr.

  • News
    How dangerous are nanoparticles? Nanotechnology and Nanosafety.
    Demokratie & (Des-)Informationsgesellschaft. On the Function and Dissemination of Big Data, Fake News and Conspiracy Theories. 26 April, 2018 | Unipark Nonntal; 27 April, 2018 Haus der Gesellschaftswissenschaften.
    Peter Vďačný will give a guest lecture on 4 May, 2018, at 14:00 pm in Hörsaal 421 of the NW-Faculty on "Integrative taxonomy of ciliates: homology testing and assessment of phylogenetic content". The Department of Life Sciences invites you to attend!
    A game by In Bocca Al Lupo against inner emptiness, anguish and delusion.
    At the conference of the network "Africa Research in Austria" the documentation "kwibuka - gedenke" will be presented. The film was part of the Rwanda-Excursion of the Department of History.
    On Friday, 13 April, the University of Salzburg awarded the biologist, Verena Lentsch, and the geologist, Eva Wagenhofer, the Marie Andessner Prize for their outstanding scientific Master’s theses. Dissertation scholarships were awarded to political scientist, Sarah Dingler; Germanist, Anna Estermann; Romanist, Birgit Füreder; and musicologist, Magdalena Marschütz.
    Radka Symonova will hold a guest lecture on 20 April, 2018, at 14:00 in the NW Faculty's Hörsaal 421 on the topic of "AT/GC Compositional Genome Evolution in Lower Versus Higher Vertebrates". The Department of Life Sciences invites you to attend!
    The lecture series, Educational Migration Research in a Comparative Perspective, launches on 17 April, 2018, 17:15 - 18:45, HS Thomas Bernhard (Unipark).
    The series SWEET SPOT sees itself as a forum for classical and completely new productions of electro-acoustic music in Salzburg. In a lounge atmosphere, completely new but also "classics" of the genre are heard and collectively discussed. Each concert is accompanied by a short introduction and the opportunity to discuss what has been heard over a glass of wine.
    Markus Hinterhäuser, Director of the Salzburg Festival and Thomas Schäfer, Director of the Darmstadt International Music Institute and Director of the Darmstadt Summer Schools - Moderation: David Roesner, Professor of Theater Studies with a focus on Music Theater at the University of Munich.
    Event series on the 80th anniversary of the burning of books in Salzburg.
    Jelka Crnobrnja Isailović will give a guest lecture on 27 April, 2018, at 14:00 in Hörsaal 421 of the NW-Faculty on the topic of "From Animal Kingdom to Evolutionary Conservation Biology". The Department of Life Sciences invites you to attend!
    On 9 April, 2018, Karl-Markus Gauss presented his book "Die Bibliothekarinnen von Renens. Reden" in the Bibliotheksaula of the University Library Salzburg.
    How can we intervene artistically, culturally and via the media in visible and invisible rules and norms? How can the current situation of art, politics and economy be questioned? We look for answers to these questions in various workshops. We want to open up new perspectives on our society and create countermovements.
    Excerpts from "Hiob. Roman eines einfachen Mannes", by the Austrian writer and journalist, Joseph Roth.
    Learn about Summer School 2018. Dates: 4 - 5 July, 2108.
    W & K FORUM: Die Kunst der Kolumne from 19:00: Reading and conversation with Doris Knecht and Harald Martenstein at the Unipark, Erzabt-Klotz-Str. 1, HS E.001 (Thomas Bernhard).
    Bernd Auerochs (Kiel) speaks about the existentialist argument against art on 2 May at 18:00 in the Unipark Nonntal - a topic within the framework of the public lecture series, LEGENDS AND EXPLANATIONS: RELIGIOUS POLEMIK AGAINST ART - ARTISTIC POLEMIK AGAINST RELIGION. www.w-k.sbg.ac.at/de/kunstpolemik-polemikkunst/aktuelles
  • Veranstaltungen
  • 20.04.18 Kuratorische Praxis im Kontext Neuer Musik und Neuen Musiktheaters
    24.04.18 Habilitationskolloquium Dr. Mark Rinnerthaler ("Zellbiologie" und "Genetik")
    24.04.18 Erziehungswissenschaftliche Migrationsforschung in vergleichender Perspektive
    24.04.18 Kanonische Texte
    25.04.18 Literarische Strategien der Religionspolemik bei Voltaire
    25.04.18 Moving Pictures
    25.04.18 Lesung mit Burgschauspieler Joseph Lorenz
    26.04.18 Erfinder - Erforscher - Erneuerer
    26.04.18 „Kunst trotz aller" statt „Kultur für alle"
    26.04.18 Info-Veranstaltung Psychotherapeutisches Propädeutikum
    26.04.18 Ringvorlesung Migration, Arbeitsmarkt und Sozialpolitik, (Felten/Brameshuber) Soziale Rechte für UnionsbürgerInnen
  • PRESS
  • Uni-Shop
  • University of Salzburg's facebook site University of Salzburg's twitter site University of Salzburg's instagram site University of Salzburg's flickr site University of Salzburg's vimeo site