This is an old revision of the document!


Phototropism

  • movement in response to light.
  • shoots grow toward light and are positively phototropic; roots grow away from light and are negatively phototropic.
  • auxin increase in shaded side → plant curve toward light
  • wavelengths less than 500μm—is most effective in producing a growth response.

Gravitropism

  • response to gravity

Thigmotropism

  • reaction to a solid object
  • eg. tendrils of climbing plants wrapping around a support
  • IAA (lengthening) and ethylene (contracting) are probably involved
  • plant_movement.1211896536.txt.gz
  • Last modified: 2008-05-27 13:55
  • by nik