What do thigmomorphogenesis, thigmotropism, and thigmonastic movements have in common?

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All three plant responses (thigmomorphogenesis, thigmotropism, and thigmonastic movements) are plant responses to touch. Thigmomorphogenesis refers to changes in overall plant morphology due to mechanical stimulation, thigmotropism is directional growth in response to touch, and thigmonastic movements refer to rapid movements in response to touch (e.g. venus flytrap closing its trap). While auxins may play a role in some of these responses, it is not a defining characteristic of all three responses. Similarly, while alteration of gene transcription is likely a factor in some of these responses, it is not a defining characteristic of all three.

What Do Thigmomorphogenesis, Thigmotropism, and Thigmonastic Movements Have in Common