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Dictionary definition: abscisic acid
- Article from:
- A Dictionary of Biology
Copyright© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. (Hide copyright information)
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abscisic acid (
ABA
)
A naturally occurring plant
growth substance
that appears to be involved primarily in seed maturation, stress responses, and in regulating closure of leaf pores (stomata). In seeds, it promotes the synthesis of storage protein and prevents premature germination. In leaves, abscisic acid is produced ...