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plant_movement [2008-05-27 13:55]
nik
plant_movement [2008-05-29 17:52]
81.188.78.24
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 +===Plant hormones===
 +There are five general classes of hormones: auxins, cytokinins, gibberellins, ethylene, and abscisic acid. for more details see [[plant biology]]
 +
 +
 +
 +==== Types of Movement ====
 +
 +"Plants in motion", A great collection of short time lapses showing plants in motion
 + http://plantsinmotion.bio.indiana.edu/plantmotion/starthere.html 
  
 ===Phototropism=== ===Phototropism===
   * movement in response to light.    * movement in response to light. 
   * shoots grow toward light and are positively phototropic; roots grow away from light and are negatively phototropic.    * shoots grow toward light and are positively phototropic; roots grow away from light and are negatively phototropic. 
-  * auxin & IAA increase in shaded side -> plant curve toward light+  * IAA increase in shaded side -> plant curve toward light
   * wavelengths less than 500μm—is most effective in producing a growth response.    * wavelengths less than 500μm—is most effective in producing a growth response. 
  
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   * eg. tendrils of climbing plants wrapping around a support   * eg. tendrils of climbing plants wrapping around a support
   * IAA (lengthening) and ethylene (contracting) are probably involved   * IAA (lengthening) and ethylene (contracting) are probably involved
 +
 +=== Other ====
 +via [[WP>Tropism]]
 +  * Chemotropism, movement or growth in response to chemicals
 +  * Gravitropism (or geotropism), movement or growth in response to gravity
 +  * Apogeotropism, the inclination to behave contrary to gravity
 +  * Hydrotropism, movement or growth in response to moisture or water
 +  * Heliotropism, movement or growth in response to sunlight.
 +  * Selenotropism, movement or growth in response to the moon.
 +  * Scototropism, movement or growth towards shadow.
 +  * Phototropism, movement or growth in response to lights or colors of light
 +  * Thermotropism, movement or growth in response to temperature
 +  * Thigmotropism, movement or growth in response to touch or contact
 +  * Autotropism, inclination of plants to grow in a certain direction or to return to a previous (or is it prior) form
 +
 +==== Reading / / Notes ====
 +  * [[wp>Rapid plant movement]]
 +  * "The Power of Movement in Plants" Charles Darwin's book on phototropism > http://www.gutenberg.org/etext/5605
 +  * Roger P. Hangarter's research into plant's responses to environmental stimuli: http://www.bio.indiana.edu/%7Ehangarterlab/abstracts/research.html
 +  * Roger P. Hangarter & Dennis DeHart - Slow Life: http://plantsinmotion.bio.indiana.edu/usbg/ http://dennis4.fatcow.com/lowlife/slowlife_intro.html
  
  
  • plant_movement.txt
  • Last modified: 2009-12-12 11:38
  • by maja