title: Photocontrol of gibberellin levels as related to the unrolling of etiolated wheat leaves.
abstract: The rapid increase in acidic gibberellin-like (GA-like) activity occurring in etiolated wheat (Triticum aestivum L.); leaf tissue in response to red light is phytochrome controlled. The production of some of the GA-like activity appears to possess a similar escapetime from far-red reversibility to leaf unrolling and is sensitive to Amo 1618. Application of these GA-like substances to leaf sections maintained in the dark causes unrolling. Increased GA-like activity can also be detected in non-irradiated portions of partly irradiated leaves.
authors.affiliation: Department of Botany and Microbiology, University College of Wales, SY23 3DA, Aberystwyth, U.K..
authors.forename: R J
authors.initials: RJ
authors.lastname: Cooke
authors.forename: P F
authors.initials: PF
authors.lastname: Saunders