What happen when auxin concentration in plant is over, Biology

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What happens when auxin concentration in some structures of the plant is over the action range of the hormone?

In some of parts of the plant (roots, stem, lateral buds) there are the auxin concentration ranges in which the hormonal action is positive (stimulate growth). It is experiential that concentrations over the superior limit of those ranges have the opposite effect (inhibition of growth).

 


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