Auxin Minimum Triggers Switch from Division to Differentiation in Cells (IMAGE)

John Innes Centre

Auxin Minimum Triggers Switch from Division to Differentiation in Cells

Caption

The balanced cross-talk between auxin and cytokinin positions the auxin minimum (indicated by *). This minimum determines the size of a root's meristem by triggering cells to transit from division to elongation. When cytokinin effects either dominate (left panel) or are reduced (right panel), the auxin minimum is repositioned (*), causing the meristem to either shrink (left panel) or extend (right panel). The hormonal tug-of-war underlying this repositioning takes place through modifications in auxin transport and degradation.

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John Innes Centre

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