The effects of auxin and strigolactones on tuber initiation and stolon architecture in potato.

ABSTRACT: Various transcriptional networks and plant hormones have been implicated in controlling different aspects of potato tuber formation. Due to its broad impact on many plant developmental processes, a role for auxin in tuber initiation has been suggested but never fully resolved. Here, auxin concentrations were measured throughout the plant prior to and during the process of tuber formation. Auxin levels increase dramatically in the stolon prior to tuberization and remain relatively high during subsequent tuber growth, suggesting a promoting role for auxin in tuber formation. Furthermore, in vitro tuberization experiments showed higher levels of tuber formation from axillary buds of explants where the auxin source (stolon tip) had been removed. This phenotype could be rescued by application o

SUBMITTER: Roumeliotis E 

PROVIDER: S-EPMC3421988 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature