Biology / Bio 2569 · Atom · ~20 seconds
Abscisic Acid
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State
Abscisic acid accumulates under stress such as drought or cold, inducing seed and bud dormancy and promoting stomatal closure to conserve water.
Show
Low soil moisture raises abscisic acid levels, closing stomata and reducing the water loss transpiration would otherwise cause.
Watch for
Abscisic acid's breakdown over winter, not a fixed timer, is what releases a seed from dormancy once conditions turn favorable.
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