Leaf-to-shoot apex movement of symplastic tracer is restricted coincident with flowering in Arabidopsis.

Abstract excerpt

Classical experiments in plant physiology showed that leaves are the source of signals that control the development of flowers from shoot meristems. Additional physiological and genetic experiments have indicated some of the molecules (e.g., gibberellins, cytokinins, and sucrose) that promote flowering in mustards including Arabidopsis. These small hydrophilic molecules are likely to move to the shoot apex...

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