Essay heading: Abscisic Acid and Stomatal Closure
Essay specific features
July 14, 2009
No of pages / words:
2 / 467
Rating of current essay:
ABA is capable of moving both up and down the stem.
The various roles of ABA are
? Stimulates the closure of stomata (water stress brings about an increase in ABA synthesis).
? Inhibits shoot growth but will not have as much affect on roots or may even promote growth of roots.
? Induces seeds to synthesize storage proteins...
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When the transpiration stream is reduced, this eliminates primarily the apoplastic flow of water.
? When the stomates are closed, a higher transcellular flow may be required. We have also reduced the transpiration stream by growing the plants under high humidity (85% RH) and this also causes the Pos of the leaf protoplasts to increase significantly...
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