02.10.2018

9 November - Guest Lecture: Population Demography in the Contact Zone of Two Ecologically Divergent Wild Petunia Species

Gustavo Silva-Arias will give a guest lecture on 9 November, 2018, at 14:00 in the practice room H34OG2.D-056, the 2nd floor of the NW-Faculty, on the topic "Population demography in the contact zone of two ecologically diverged wild petunia species". The Department of Life Sciences invites you to attend!

Barrierefreiheit: Kurzbeschreibung des Bildes

Dr. Gustavo Silva-Arias ist PostDoc in der Section of population genetics am Center of Life and Food Sciences Weihenstephan der Technischen Universität München.  

Abstract:
It is widely recognized that hybridization between closely related plant species is an important process in plant evolution because of its consequences to species adaptation and diversification. In this study, we aimed to disentangle patterns of diversification and to estimate introgression between Petunia axillaris and P. exserta. These species differ in pollination syndrome, mating system, morphology, and inhabit contrasting environments. We evaluated the strength of gene exchange between these two Petunia species through ~6k SNPs obtained with the GBS technique to genotype 58 individuals distributed among seven allopatric and two contact zones and assess the population structure, admixture, and gene flow among these populations. Additionally, a set of alternative demographic scenarios was assessed to test the support of different isolation-migration scenarios as well as the time, grade, and direction of interspecific gene flow. The genetic structure analyses showed poor differentiation between P. axillaris populations, while P. exserta has strong population structure based on geographical locations. We identified two active hybrid zones and documented admixture related with a recent secondary contact that is better explained by differences in mating systems and post-zygotic barriers. Our results indicated that species borders are well maintained, despite likely ongoing gene exchange. Finally, we discuss that despite the strong floral morphological differentiation, unequivocal molecular evidence of admixture suggests that widely disclosed differentiation of pollination syndrome in Petunia species might be less specific than previously believed.

Barrierefreiheit: Kurzbeschreibung des Bildes

Dr. Anja Hörger

Universitätsassistentin, PostDoc, AG Comes

Universität Salzburg

Hellbrunnerstraße 34, Raum: D-1027

Tel: +43 (0) 662 / 8044-5501

E-mail to Dr. Anja Hörger

  • News
    Univ.-Prof. Dr. Nicola Hüsing has been honored for her previous scientific work and nominated to the EURASC.
    Dr. Lorenz Aglas, senior scientist of the Working Group Ferreira in the Department of Biosciences, is the winner of the AK-Wissenschaftspreis of the Arbeiterkammer Salzburg.
    Tickets are no longer available for the 8th Paris Lodron Ball. The approved number of guests for the Alte Residence has been reached. Thank you! www.uni-salzburg.at/ball
    Become an expert in EU Politics, Law and Economics.
    From 17-19 October, 2018, the Media Literacy Awards (MLA) once again were awarded. Every year, the Federal Ministry awards the most innovative media educational projects to European schools. This time the award in the category "Multimedia" went to the project "Speak OUT", translated by Speaking VLog, Mag. Julia Weißenböck, MSc, BA, Fachdidaktikerin for English at the University of Salzburg, together with her 3rd class.
    On November 27, 2018, the inaugural lectures of professor of journalism, Rudolf Renger, and history and political didactics, Christoph Kühberger, took place at the Faculty of Arts and Social Sciences.
    The so-called Beißergruppe, found in the late 17th century in a Roman villa near Grottaferrata in Llatium and is now in the British Museum in London, reintroduces two boys in dispute over the game Knucklebones.
    Panel discussion, 19.01.2018, 16:00, Unipark Nonntal, HS Thomas Bernhard (E.001). Afterwards, networking phase in the Foyer in the 1.UG - Following HUMANS
    "If you want new answers, you have to ask new questions." (Johann W. Goethe) - You have the opportunity in Unipark Nonntal, 18.1.2019, 08:00-15:30.
    By a resolution dated 18 June, 2018, the long-serving lecturer at the Department of Classical Studies at the PLUS, Univ.-Lektor Lic. phil. Dr. h.c. Dr. phil. Günther E. Thüry was awarded the professional title “Professor” by the Federal President.
    Mon 21.1.2019, 17:15, HS E.001 (Unipark) - Dr. Louise Hecht (Vienna, Potsdam) - Inclusion and Exclusion Strategies of the Jewish Enlightenment (Haskalah)
    INTERNATIONAL CONFERENCE // Wed 23.1., 18.30h READING Kathrin Röggla (Berlin): "Revision", Moderation: Bettina Hering (Leitung Schauspiel, Salzburg Festival) // Thu 24.1., 18.30h W & K FORUM: PODIUM DISCUSSION with Ulrike Hatzer, Hans -Werner Kroesinger, Kathrin Röggla and Christine Umpfenbach. Moderation: Christoph Lepschy // Fri 25.1. 19.00h THEATER "Röggla hat Angst. Ein Trimm-dich-Pfad für Angsthasen". Theater in the KunstQuartier, Paris-Lodron-Straße 2a // www.w-k.sbg.ac.at/de/kunstpolemik
    On Thursday, 24 January, 2019, the eighth night shift@UBS will take place in the main library at 19:00 in cooperation with the ÖH Salzburg.
    Thu 24.1., 18.30h PODIUM DISCUSSION with Ulrike Hatzer (Regisseurin / Mozarteum), Hans-Werner Kroesinger (Regisseur), Kathrin Röggla (Author) and Christine Umpfenbach (Regisseurin). Moderation: Christoph Lepschy (Mozarteum) // Theater in the KunstQuartier, Paris-Lodron-Str. 2a // www.w-k.sbg.ac.at/de/kunstpolemik-polemikkunst
    The writer Cécile Balavoine spent an Erasmus year at the University of Salzburg. Her enthusiasm for the city of Salzburg and the music of Mozart can be felt on every page of her first novel, MAESTRO.
    A scene study after texts by Kathrin Röggla / 19:00 Theater in the KunstQuartier | Paris-Lodron-Straße 2a | 5020 Salzburg // Admission is free, Zählkarten unter: +43 662 6198-3121 (Mon-Fri, 9-12h), schauspiel@moz.ac.at // www.w-k.sbg.ac.at/de/kunstpolemik-polemikkunst
    Invitation to the conference, NEW DEVELOPMENTS IN EUROPEAN ASYLUM LAW
    On 31 January, 2019, Professor Nadine Marquardt (Bonn) will come to Salzburg for a guest lecture on "Poverty and Punishment".
  • Veranstaltungen
  • 18.01.19 HUMANS
    22.01.19 Knöchelspielende Kinder und streitende Knaben. Die Londoner Beißergruppe und ihr Umfeld
    23.01.19 Kathrin Röggla: Dokumentarisches Schreiben
    23.01.19 Lesung: Kathrin Röggla ('Revision')
    24.01.19 Pflege und Betreuung – Who cares?
    24.01.19 Kathrin Röggla und die „Recherchegespenster“. Realitäten in Prosa und Theater der Gegenwart
    24.01.19 "Go International" - Praktikum im Ausland
    24.01.19 W&K Forum: Podiumsdiskussion - Documentality!? Realitäten im Theater der Gegenwart
    24.01.19 8. Nachtschicht@UBS - Zurück zum Schreibtisch!
  • Alumni Club
  • 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