Basipetal and Acropetal Auxin Transport in Relation with Temperature |
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Authors: | P E Pilet |
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Institution: | Institute of Plant Biology and Physiology, University of Lausanne |
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Abstract: | In stem sections of lentil seedlings, there is a typical polar movement of IAA labelled with 14C. The degree of polarity, expressed as the ratio of basipetal to acropetal transport, was (25°C) 7.6. A decrease (from 25° to 15°C) and an increase (from 25° to 30°C) of temperature cause a reduction of the IAA uptake by the sections and a decrease of both the basipetal and the acropetal translocation of IAA. Results suggest that the basipetal as well as the acropetal movement of auxin, are dependent of a metabolical component which is discussed. |
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