tropins

Tropins are a class of plant hormones that play a crucial role in the tropic responses of plants, which are growth movements in response to environmental stimuli. These hormones are primarily involved in the growth and development of plant organs, such as roots and shoots, in response to light, gravity, and touch. Tropins are synthesized in the shoot and transported to the root, where they trigger growth responses. The most well-known tropins are auxins, which are responsible for phototropism (growth towards light) and gravitropism (growth towards gravity). Other tropins include cytokinins, which promote cell division and differentiation, and gibberellins, which regulate stem elongation and flowering. Tropins are essential for the overall growth and development of plants, and their study has contributed significantly to our understanding of plant biology.