Expression studies of AOX during adventitious root induction in Olea europaea L.

Abstract

Recently, identification of four alternative oxidase (AOX) gene sequences from olive (Olea europaea L.) has been reported from our group. Three genes could be classified as members of the sub-family AOX1 and one as belonging to the sub-family of AOX2. AOX has been proposed as functional marker candidate for easy-to-root olive genotypes. Validation of AOX as an appropriate marker candidate needs to highlight a close relationship between AOX expression and AOX activity to root induction and/or initiation. Here we present AOX gene expression data during IBA treatments of olive shoot cuttings and the result of studies on the effect of AOX inhibitors and stimulators. Furthermore, variable 3’-UTRs are presented as a source for differential gene regulation in the OeAOX2 gene.