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Leaf Development - Plant Ontology Wiki

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• Prior leaf abscission<br />

– Auxin decrease in the leaf and the abscission<br />

zone<br />

– As leaf become old, there are changes in the<br />

efficiency and direction of the auxin transport<br />

in the petiole<br />

– Now, the ABA (abscisic acid) and ethylene<br />

becomes involveè accelerating the<br />

abscission time

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