Identification of flowering genes in strawberry, a perennial SD plant |
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Authors: | Katriina Mouhu Timo Hytönen Kevin Folta Marja Rantanen Lars Paulin Petri Auvinen Paula Elomaa |
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Institution: | (1) Department of Applied Biology, University of Helsinki, PO Box 27, FIN-00014 Helsinki, Finland;(2) Finnish Graduate School in Plant Biology, University of Helsinki, PO Box 56, FIN-00014 Helsinki, Finland;(3) Viikki Graduate School in Biosciences, University of Helsinki, PO Box 56, FIN-00014 Helsinki, Finland;(4) Horticultural Sciences Departmen, University of Florida, Gainesville, FL, USA;(5) Institute of Biotechnology, University of Helsinki, PO Box 56, FIN-00014 Helsinki, Finland |
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Abstract: | Background We are studying the regulation of flowering in perennial plants by using diploid wild strawberry (Fragaria vesca L.) as a model. Wild strawberry is a facultative short-day plant with an obligatory short-day requirement at temperatures
above 15°C. At lower temperatures, however, flowering induction occurs irrespective of photoperiod. In addition to short-day
genotypes, everbearing forms of wild strawberry are known. In 'Baron Solemacher' recessive alleles of an unknown repressor,
SEASONAL FLOWERING LOCUS (SFL), are responsible for continuous flowering habit. Although flower induction has a central effect on the cropping potential,
the molecular control of flowering in strawberries has not been studied and the genetic flowering pathways are still poorly
understood. The comparison of everbearing and short-day genotypes of wild strawberry could facilitate our understanding of
fundamental molecular mechanisms regulating perennial growth cycle in plants. |
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