title: Circadian oscillations of Lhc mRNAs in a photoautotrophic cell culture of Lycopersicon peruvianum.
abstract: Fourteen genes encoding proteins of the light harvesting complex (Lhc) are expressed in a photoautotrophic cell culture from the wild species of tomato (Lycopersicon peruvianum). For two genes, Lhca2 (cab7) and Lhcb2(*)1 (cab4), a rhythmic oscillation of the transcript accumulation is observed under light/dark and constant dark conditions indicating that gene expression is controlled by a circadian clock in the tomato cell culture. The circadian expression of the Lhc genes remains present after application of 2,2'-dipyridyl. However, the amplitude of Lhc mRNA oscillations and the photosynthetic capacity (Fmax/Fo) decrease significantly. The transcript accumulations of psbA, rbcS and rbcL are less or not at all affected by 2,2'-dipyridyl.
authors.affiliation: Institut für Biochemie der Pflanze, Untere Karspüle 2, 37073, Göttingen, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Winter
authors.forename: S
authors.initials: S
authors.lastname: Stöcker
authors.forename: N
authors.initials: N
authors.lastname: Merforth
authors.forename: H P
authors.initials: HP
authors.lastname: Mühlbach
authors.forename: B
authors.initials: B
authors.lastname: Piechulla