Other Forms
A different form of thigmonasty than leaf closure occurs in thistle. When an insect lands on a flower, the anthers shrink and rebound. The effect is to load the insect with pollen. Turgor change acts on the specialized, highly elastic cell walls of the anthers to produce the effect. Similar behavior has been reported in black-eyed susan.
Some fungi exhibit trap closure similar to the venus fly trap. Mycologists have discovered action potentials in fungi but it is not currently known if they are related to thigmonasty.
Read more about this topic: Thigmonasty
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