Acclimation of circadian rhythms in woodland strawberries (Fragaria vesca L.) to Arctic and mid-latitude photoperiods
Permanent lenke
https://hdl.handle.net/10037/31659Dato
2023-10-10Type
Journal articleTidsskriftartikkel
Peer reviewed
Forfatter
Faehn, Corine Alexis; Reichelt, Michael; Mithöfer, Axel; Hytönen, Timo; Mølmann, Jørgen Alexander Barosen; Jaakola, Laura ElinaSammendrag
Results The Arctic photoperiod induced lower expression in IT4 and NOR13 for six clock genes (FvLHY, FvRVE8, FvPRR9, FvPRR7, FvPRR5, and FvLUX), in IT1 for three genes (FvLHY, FvPRR9, and FvPRR5) and in NOR2 for one gene (FvPRR9). Free-running rhythms for FvLHY in IT1 and IT4 were higher after the Arctic photoperiod, while the free-running rhythm for FvLUX in IT4 was higher after the mid-latitude photoperiod. IT1 showed signifcantly higher expression of FvLHY and FvPRR9 than all other accessions, as well as signifcantly higher expression of the circadian regulated phytohormone, abscisic acid (ABA), but low levels of salicylic acid (SA). NOR13 had signifcantly higher expression of FvRVE8, FvTOC1, and FvLUX than all other accessions. NOR2 had extremely low levels of auxin (IAA) and high levels of the jasmonate catabolite, hydroxyjasmonic acid (OH-JA).
Conclusions Our study shows that circadian rhythms in Fragaria vesca are driven by both the experienced photoperiod and genetic factors, while phytohormone levels are primarily determined by specifc accessions’ genetic factors rather than the experienced photoperiod.