Auxins are chemicals that control the growth of plants by promoting cell division and causing elongation in plant cells (the cells get longer).

Auxin also has a prominent role in shaping the ... new non-invasive techniques to visualize both the quantity of small molecules and the activity of signaling pathways. Interactions between ...

They are signal molecules produced within the plant functioning in extremely low concentrations. The acid growth theory states that the auxin-induced acidification of plant cell walls causes their ...

Just like phototropism, gravitropism is also caused by an unequal distribution of auxin. When a stem is placed horizontally, the bottom side contains more auxin and grows more - causing the stem ...