Enzyme Formation in Higher Plant Tissue:1

Abstract
During the first few hours of ageing, discs of Jerusalem artichoke tubers produce a stimulator of invertase synthesis, which can be detected in the ageing medium. Gibberellin-like substances, undetectable in extracts of freshly wounded tubers, are present in significant amounts after ageing. Tubers stored at 4 °C before wounding produce considerably more gibberellin than those stored at 20 °C. It is suggested that the stimulator observed is a gibberellin.

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