Sucrose is an early modulator of the key hormonal mechanisms controlling bud outgrowth in Rosa hybrida.

ABSTRACT: Sugar has only recently been identified as a key player in triggering bud outgrowth, while hormonal control of bud outgrowth is already well established. To get a better understanding of sugar control, the present study investigated how sugar availability modulates the hormonal network during bud outgrowth in Rosa hybrida. Other plant models, for which mutants are available, were used when necessary. Buds were grown in vitro to manipulate available sugars. The temporal patterns of the hormonal regulatory network were assessed in parallel with bud outgrowth dynamics. Sucrose determined bud entrance into sustained growth in a concentration-dependent manner. Sustained growth was accompanied by sustained auxin production in buds, and sustained auxin export in a DR5::GUS-expressing pea line. Se

SUBMITTER: Barbier F 

PROVIDER: S-EPMC4986866 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature