phototropism

(noun)

the movement of a plant toward or away from light

Related Terms

  • photomorphogenesis
  • photoperiodism
  • photoreceptor

Examples of phototropism in the following topics:

  • Blue Light Response

    • Phototropism is the directional bending of a plant toward or away from a light source of blue wavelengths of light.
    • Positive phototropism is growth toward a light source , while negative phototropism (also called skototropism) is growth away from light.
    • Phototropins are protein-based receptors responsible for mediating the phototropic response in plants.
    • Azure bluets (Houstonia caerulea) display a phototropic response by bending toward the light.
    • Phototropism is the growth of plants in response to light.
  • Plant Responses to Light

    • Light can also elicit a directional response in plants that allows them to grow toward, or even away from, light; this is known as phototropism .
    • This is an example of positive phototropism.
  • Auxins, Cytokinins, and Gibberellins

    • Plant hormones affect all aspects of plant life, from flowering to fruit setting and maturation, and from phototropism to leaf fall.
    • The term auxin is derived from the Greek word auxein, which means "to grow. " Auxins are the main hormones responsible for cell elongation in phototropism and gravitropism.
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