Researchers of the Outi Savolainen group have shown that strong natural selection was acting on the phytochrome A gene (PHYA) in the rock cress (Arabidopsis lyrata spp. petraea, a close relative of A. thaliana, the plant molecular biology model organism) after the last Ice Age. PHYA perceives the day length and can regulate the timing of flowering and growth cessation. New results show that this gene has likely had an important role in adaptation to the short growing season in the North.
The research article “A recent local sweep at the PHYA locus in the Northern European Spiterstulen population of Arabidopsis lyrata” by T. Toivainen, T. Pyhäjärvi, A. Niittyvuopio and O. Savolainen was published in Molecular Ecology. Link to the publication.
Last updated: 2.9.2016