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Info DEE # 8 - August 2019
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WELCOME TO OUR NEW COLLEAGUES
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Mr Jérémy Grémion is back in the group of Prof. Philippe Christe as research assistant for 2 months in the frame of a project "Interact". Jérémy will be in the field most of the time but his office is 2205, phone 56.15, Jeremy.Gremion@unil.ch
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Mr Nicolas Moulin is back in the group of Prof. Alexandre Roulin for an additional two months internship. Nicolas.Moulin1@unil.ch
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Mr Steve Zurkinden is back in the group of Prof. Alexandre Roulin for a couple months as research Assistant. Steve is located in office 3209, phone 42.19. Steve.Zurkinden@unil.ch
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We are also glad to count on the help of new student-assistants: Ms Safiya Axmed (group Sanders), Mr Dany Buffat (group Guisan) and Mr Thimothée Frettrelet (group Guisan). Welcome to them too.
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The "Opération Fourmis" continues on its successful way. To date, 298 volunteer collectors have sent back almost 3'000 samples. Read more here.
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Kamil S. Jaron will defend his thesis, co-supervised by Prof. Tanja Schwander and Prof. Marc Robinson-Rechavi, on Friday August 30th at 4:00 pm in the Biophore Auditorium. The thesis is entitled
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"Genomic consequences of asexuality in animals".
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The synthetic hormone ethynylestradiol (EE2) used in the contraceptive pill is among the most common polluants of freshwater environments. In their MSc theses, Oliver Selmoni (MSc MLS) and Diane Maitre (MSc BEC) tested whether EE2 affects gene expression and sex differentiation in a natural population of grayling (Thymallus thymallus) that suffers from a distorted sex-ratio. They found that an ecologically relevant concentration of EE2 strongly interferes with sex-specific gene expression but does not seem to induce sex reversal. The work was jointly supervised by Prof. Marc Robinson-Rechavi and Prof. Claus Wedekind and will be published in BMC Genomics.
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Figure : Juvenile grayling around the time of gonad formation.
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PhD Student Xinji Li and former Postdoc Dr Paris Veltsos from the group of Prof. John Pannell have just published an article in New Phytologist showing that males of the plant Mercurialis annua with a double dose of their Y chromosome and lacking an X chromosome are viable but sterile.
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Figure: left: pollen from normal XY males; right: pollen from YY males.
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Dr Marie Voillemot, former PhD Student and Postdoc from the group of Prof. John Pannell, has published an article in Evolution showing the rapid spread of self-compatibility in experimental populations of the plant Linaria cacanillesii - an example of rapid evolution taking place on the UNIL campus.
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Former Postdocs Dr Paris Veltsos and Dr Katie Ridout, together with other members of the group of Prof. John Pannell, have recently published an article in the journal Genetics showing evidence of very recent mild degeneration of the Y chromosome of the plant Mercurialis annua.
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Figure: Karyotype of Mercurialis annua: chromosome 1 is the sex chromosome.
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