SENSITIVITY AND SENSORY ADAPTATION IN GROWTH SUBSTANCE RESPONSES

摘要: It is a commonly-held view that growth substances act pivotally in plant and development. The effects of exogenously-added biosynthesis mutants represent the main experimental support for such notion. thesis this article instead, are sensitive controllers development only under certain discrete circumstances. These conditions, which characteristically poor growth, characterised by specific imbalance(s) (starvation) particular resources; they lead to phenotypic developmental plasticity. In conditions competition resources between growing tissues or polarities metabolic processes intensified; those incorporate extra stimulus substance survive competitive more effectively. As result balance altered may become thinner thicker, coupling one other substance. well-nourished plants acquire capability synthesise sensitivity ontogenetically. But these contribution acts essential but insensitive therefore not controlling. be possible associate with resource starvation. Thus auxin gibberellin associated carbohydrate amino acid starvation etiolated green respectively, cytokinin nitrogen starvation, abscisic water ethylene ATP (O2)