Speciation Clock

• Mairal, Mario; Namaganda, Mary; Gizaw, Abel ; Chala, Desalegn ; Brochmann, Christian & Catalan, Pilar (2021). Multiple mountain-hopping colonization of sky-islands on the two sides of Tropical Africa during the Pleistocene: The afroalpine Festuca grasses. Journal of Biogeography. ISSN 0305-0270. doi: 10.1111/jbi.14117.
• Gizaw, Abel ; Gorospe, Juan Manuel; Kandziora, Martha; Chala, Desalegn ; Gustafsson, A Lovisa S & Zergabachew, Abush Zinaw [Vis alle 11 forfattere av denne artikkelen] (2021). Afro-alpine flagships revisited II: elucidating the evolutionary relationships and species boundaries in the giant senecios (Dendrosenecio, Asteraceae). Alpine Botany. ISSN 1664-2201. doi: 10.1007/s00035-021-00268-5. Fulltekst i vitenarkiv
• Brochmann, Christian; Gizaw, Abel ; Chala, Desalegn ; Kandziora, Martha; Eilu, Gerald & Popp, Magnus [Vis alle 8 forfattere av denne artikkelen] (2021). History and evolution of the afroalpine flora: in the footsteps of Olov Hedberg. Alpine Botany. ISSN 1664-2201. doi: 10.1007/s00035-021-00256-9. Fulltekst i vitenarkiv
• Andermann, Tobias; Torres Jiménez, Maria Fernanda; Matos-Maravi, Pável; Batista, Romina; Blanco-Pastor, José L. & Gustafsson, A Lovisa S [Vis alle 11 forfattere av denne artikkelen] (2020). A guide to carrying out a phylogenomic target sequence capture project. Frontiers in Genetics. ISSN 1664-8021. 10:1407, s. 1–20. doi: 10.3389/fgene.2019.01407.
• Nowak, Michael; Birkeland, Siri; Mandáková, Terezie; Choudhury, Rimjhim Roy; Guo, Xinyi & Gustafsson, A Lovisa S [Vis alle 15 forfattere av denne artikkelen] (2020). The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic. Molecular Ecology Resources. ISSN 1755-098X. doi: 10.1111/1755-0998.13280.
• Birkeland, Siri; Gustafsson, A Lovisa S; Brysting, Anne Krag; Brochmann, Christian & Nowak, Michael (2020). Multiple Genetic Trajectories to Extreme Abiotic Stress Adaptation in Arctic Brassicaceae. Molecular Biology and Evolution (MBE). ISSN 0737-4038. 37(7), s. 2052–2068. doi: 10.1093/molbev/msaa068. Fulltekst i vitenarkiv
• Tusiime, Felly Mugizi; Seid, Abel Gizaw; Gusarova, Galina; Nemomissa, Sileshi; Popp, Magnus & Mirre, Virginia [Vis alle 12 forfattere av denne artikkelen] (2020). Afro-alpine flagships revisited: Parallel adaptation, intermountain admixture and shallow genetic structuring in the giant senecios (Dendrosenecio). PLOS ONE. ISSN 1932-6203. 15(3), s. 1–22. doi: 10.1371/journal.pone.0228979. Fulltekst i vitenarkiv

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• Gizaw, Abel ; Gorospe, Juan Manuel; Kandziora, Martha; Chala, Desalegn ; Gustafsson, A Lovisa S & Zinaw, Abush [Vis alle 11 forfattere av denne artikkelen] (2021). Is lack of phylogenetic resolution the hallmark of alpine radiation? Insights from the afro-alpine giants in Dendrosenecio (Senecioneae, Asteraceae).
• Marie-Orleach, Lucas; Brochmann, Christian & Glémin, Sylvain (2021). Mating System and Speciation – Accumulation of Genetic Incompatibilities in Allopatry.
• Grindeland, Helene Bråten (2021). Plantenes prevensjon mot seg selv. Biolog. ISSN 0801-0722. 39(1), s. 36–37.
• Danielsen, Dag Inge & Birkeland, Siri (2021). Hvordan klarer plantene seg i ekstrem kulde i Arktis? Forskning.no. ISSN 1891-635X.
• Birkeland, Siri; Slotte, Tanja; Brochmann, Christian; Brysting, Anne Krag; Gustafsson, Lovisa & Nowak, Michael D (2021). What can the cold-induced transcriptomes of Arctic Brassicaceae tell us about the evolution of cold tolerance?
• Brochmann, Christian (2020). How fast does the plant 'speciation clock' tick in the African Sky Islands?
• Martha, Kandziora; Gehrke, Berit; Popp, Magnus; Gizaw, Abel ; Brochmann, Christian & Pirie, Michael David (2020). Immigrants prevail: lessons from dating the Afroalpine flora.
• Mairal, Mario; Namaganda, Mary; Gizaw, Abel ; Chala, Desalegn ; Brochmann, Christian & Catalan, Pilar (2020). Multiple mountain-hopping colonization of sky-islands on the two sides of Tropical Africa during the Pleistocene: the afroalpine Festuca grasses.
• Chala, Desalegn (2020). Historical climate change impacts on the African 'Sky Island' ecosystems and the enigmatic plants comprised in them.
• Gustafsson, A Lovisa S (2020). The Speciation Clock project How fast does the 'speciation clock' tick in selfing versus outcrossing lineages? .
• Gustafsson, A Lovisa S (2020). Forskere forteller: På ekspedisjon til afrikanske himmeløyer.
• Marie-Orleach, Lucas (2020). Transitions between Sexual Systems: Understanding the Mechanisms of, and Pathways between, Dioecy, Hermaphroditism and Other Sexual Systems. The Quarterly review of biology. ISSN 0033-5770. 95(1), s. 86–86.
• Marie-Orleach, Lucas; Brochmann, Christian & Glémin, Sylvain (2020). How fast does the "speciation clock" tick in selfing versus outcrossing lineages?
• Flood, Pádraic J; Goktay, Mehmet; Tergemina, Emmanuel; Gywenne-Evans, David; Gustafsson, A Lovisa S & Telia, Habte [Vis alle 17 forfattere av denne artikkelen] (2019). The genetic basis of convergent adaptation to altitude in Arabidopsis thaliana .
• Chala, Desalegn & Brochmann, Christian (2019). Tropical ‘alpine’ habitats: improper use of the term alpine?
• Mairal, Mario; Namaganda, Mary; Brochmann, Christian & Catalan, Pilar (2019). Colonization and diversification of wind-dispersed Festuca grasses in afro-alpine sky islands.
• Brysting, Anne Krag (2019). Speciation and reproductive barriers.
• Gustafsson, A Lovisa S & Gizaw, Abel (2019). Speciation Clock-prosjektet: Feltarbeid i de afrikanske himmeløyer.
• Huseby, Lise Grønnerød; Nowak, Michael; Gustafsson, A Lovisa S; Brochmann, Christian & Brysting, Anne Krag (2019). How fast does the Speciation Clock tick? Vis sammendrag

  Species are the most fundamental unit in nature, yet we know surprisingly little about how long it takes for new, reproductively isolated species to originate and what factors influence the rate of speciation. Speciation depends on the evolution of reproductive barriers that make individuals reproductively isolated from one another. One potential factor that could impact how fast these reproductive barriers occur is mating system. It has been suggested that self-fertilization, a common mating system both in wild and cultivated plants and also found in animals, can drive the evolution of postzygotic reproductive isolation, and thus create new species. Our aim is to test whether selfing species diverge into new species faster than outcrossing species. We will therefore test the rate at which reproductive barriers occur within species with different mating systems, we will target one selfing and one outcrossing plant species and identify the number of loci responsible for reproductive isolation between populations representing different degrees of population divergence. For this project we will use two plant species, the selfer Draba nivalis and the outcrosser Arabidopsis lyrata and perform quantitative trait locus (QTL) mapping experiments aimed at identifying the number of loci responsible for reproductive isolation between populations representing different degrees of population divergence. For this we need to create intraspecific crosses and produce large F2 populations for genotyping and phenotyping. We will then test the ‘snowball effect’ in both species and compare the rate of accumulation of genes that contribute to reproductive isolation.

• Brochmann, Christian (2019). Project SpeciationClock: How fast does the plant 'speciation clock' tick in the African Sky Islands?
• Marie-Orleach, Lucas (2019). Sexual selection, indirect genetic effects and speciation.
• Marie-Orleach, Lucas (2019). Sexual selection, indirect genetic effects and speciation.
• Nowak, Michael (2019). Searching for patterns of Arctic plant adaptation in the genome of Draba nivalis (Brassicaceae).
• Birkeland, Siri; Gustafsson, A Lovisa S; Brysting, Anne Krag; Brochmann, Christian & Nowak, Michael (2019). Same destination, but different roads? Overarching, but limited fine-scale molecular convergence in Arctic crucifers.
• Gizaw, Abel & Brochmann, Christian (2018). Colonization, diversification and connectivity in the extremely fragmented African ‘Sky Island’ flora. .
• Brochmann, Christian (2018). Alle snakker om arter som dør ut - men hvor fort dannes nye? Arktis og afrikanske høyfjell kan gi et svar. .
• Brochmann, Christian (2018). Hvordan og hvor fort oppstår nye plantearter? [Internett]. https://titan.uio.no/node/2847.
• Brochmann, Christian (2018). Hvor fort tikker artsdannelsesklokka? . [Internett]. NHMs nettsider https://www.nhm.uio.no/om/aktuelle-saker/2018.
• Brochmann, Christian (2018). Alle snakker om arter som dør ut - men hvor fort dannes nye? Arktis og afrikanske høyfjell kan gi et svar. .
• Brochmann, Christian (2018). Fjellplanter og klima: rask artsdannelse, raske vandringer - og hvordan står det egentlig til med overvintringsteorien?

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