In positive phototropism of flowering plants, IAA produced in the shoot tip is transported down; light causes IAA to move to the shaded side, leading to greater cell elongation there and bending towards light.
Nella fototropismo positiva delle piante da fiore, l'IAA prodotto nella punta del germoglio viene trasportato verso il basso; la luce provoca il movimento dell'IAA verso il lato ombreggiato, che causa un maggiore allungamento delle cellule su quel lato, facendo piegare il germoglio verso la luce.
| Front | How does positive phototropism occur in flowering plants? |
|---|---|
| Back | - cells in shoot tip produce IAA - IAA transported down shoot - light causes movement of IAA from light side to shaded side - greater IAA concentration on shaded side - IAA causes elongation of shoot cells - faster elongation on shaded side - shoot bends towards light |
Tags: tropisms
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