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Auxin H Cell Wall Describe Auxin's Mechanism Action

In shoots, auxin activates H+ pumps, lowering cell wall pH and loosening cellulose fibers by breaking bonds. This increases wall elasticity, allowing water influx and cell expansion.

In shoots, auxin activates H+ pumps, lowering cell wall pH and loosening cellulose fibers by breaking bonds. This increases wall elasticity, allowing water influx and cell expansion.

Front describe auxin's mechanism of action in shoots
Back auxin activates H+ pump, H+ secreted into cell wall lowering pH, cellulose fibres loosen (bonds break), auxin upregulates the expression of expansins (increase wall elasticity), flexibity allows an influx of water, cell size increases 

Tags: 9_3_plant_growth

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