Slotte lab at the Stockholm University Frescati campus in October 2019. From left to right: Robert, Juanita, Jörg, William, Tanja, Reza, Aleksandra, Marco, and Sara.

Tanja Slotte, Professor in Ecological Genomics

Photo: Rickard Kilström/Stockholm University

Photo: Rickard Kilström /Stockholm University

Tanja is a population geneticist who studies the genetic basis and genomic consequences of classic evolutionary transitions such as plant mating system shifts. She is broadly interested in using population genetic methods to understand how selection affects different classes of sites across plant genomes, and in the evolution of loci under balancing selection, such as mating system supergenes and self-incompatibility loci.

Tanja received her PhD from Uppsala University in 2007. As a post-doctoral fellow with Stephen Wright, she worked on the demographics of speciation and mating system evolution. As an Assistant Professor at Uppsala University, she started her own group working on plant evolutionary genomics. In April 2014 she took up a position as SciLifeLab Fellow at Stockholm University. In 2016 she became docent in Ecological Genomics at Stockholm University, in 2018 Associate Professor, and in 2022 Professor in Ecological Genomics. Since 2021 she is also the subject representative for the PhD programme in Ecology and Evolution at the Dept. of Ecology, Environment and Plant Sciences, Stockholm University.


Juanita Gutiérrez, PhD student

juanita_suJuanita received her Master’s Degree from University of Groningen and University of Munich as part of the MEME Erasmus Mundus programme. Juanita did a Master’s project on the impact of mating system on selection in plants in the Slotte lab, with Michael Fontaine as a supervisor at University of Groningen. Juanita started her PhD studies on June 1st, 2018 and is working on the Linum distyly S-locus project.

Panagiotis-Ioannis Zervakis, PhD student

Panagiotis_brighter-2Panagiotis received his Master’s Degree in Evolutionary Biology from Uppsala University, where he completed a degree project on human population genomic analyses in the group of Prof. Mattias Jakobsson. Panagiotis started his PhD studies on January 18th, 2021, and is working on the evolution of the distyly supergene in Linum and population genomic analyses of plant mating system shifts.


Dr. Marco Fracassetti, Postdoctoral researcher


Marco is a postdoctoral fellow who joined the lab in 2017. Marco did his PhD on genetic diversity and climate adaptation in Arabidopsis lyrata, at University of Neuchatel and University of Basel. In the Slotte lab he has worked on mating system evolution and population genomic analyses in the Brassicaceae, and currently he is working on the Linum distyly S-locus project.


Dr. Aleksandra Losvik, research engineer & lab manager

AleksandraAleksandra joined the group in October 2019 to work as a research engineer in our molecular lab. She completed her PhD at Stockholm University and has a background in plant physiology.


Maya Edlund, PhD student

Maya is a PhD student at Stockholm University, with Gitte Petersen as main supervisor and Tanja Slotte as co-supervisor. Maya is working on genome evolution in parasitic plants, and started her PhD studies in 2019.

Lovisa Thilén, PhD student

Lovisa is a PhD student at Stockholm University, with Catarina Rydin as main supervisor and Tanja Slotte and Sylvain Razafimandimbison at the Natural History Museum, as co-supervisors.


Recent alumni

Xuyue Yang, PhD

Xuyue was a PhD student at Stockholm University, with Peter Hambäck as main supervisor and Tanja Slotte as co-supervisor. Xuyue defended her PhD thesis entitled “Coevolution and molecular background of species interactions in geographic mosaics” on December 17th, 2021.

Dr. Emma Berdan, Carl Tryggers postdoctoral fellow

Emma joined the lab as a Carl Tryggers postdoctoral fellow in 2020 to work on the evolution of supergenes and linked selection. Emma has a strong interest in studying the evolution of large genomic structural variants (such as inversions, translocations, etc.) in nature.  For more information, see Emma’s website.

Dr. P. William Hughes, Postdoctoral fellow

William joined the lab in November 2018 after a postdoctoral position at the Max Planck Institute for Plant Breeding Research in Germany. In the Slotte lab, he worked on the distyly S-locus project in Linum. He now holds a project leader position at BASF in the Netherlands.

Dr. Alireza Foroozani, Postdoctoral fellow

Reza  joined the lab in October 2019 after a PhD at Durham University.

Siri Birkeland, PhD

Siri was a PhD student at the Natural History Museum, University of Oslo, who had Tanja Slotte as a co-supervisor. Siri defended her PhD thesis “Tracing Molecular Patterns of Adaptation in Arctic Brassicaceae – Evolutionary repeatability and adaptations to extreme abiotic stress” on December 11th, 2020. Siri is now a postdoc at NMBU in Ås, Norway.

Jörg Bachmann, PhD

Jörg defended his PhD thesis “Evolutionary consequences of dominance at the Brassicaceae self-incompatibility locus” on May 15th, 2020 and is now a postdoc at KTH/SciLifeLab in Pelin Sahlen’s lab in Stockholm. J

Robert Horvath, PhD

Robert defended his PhD thesis entitled “Population genomic analyses of regulatory variation and selection in Brassicaceae species” on May 8th, 2020. He first did a postdoc in Jeff Ross-Ibarra’s lab at UC Davis in California and is now doing a postdoc at University of Zürich at the Dept. of Plant and Microbial Biology.


Full list of alumni