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How does ABA bring about the closure of stomata under water stress conditions?

How does ABA bring about the closure of stomata under water stress conditions?
 

Grade:12th pass

1 Answers

RAJU
398 Points
7 years ago
 ABA, during stomatal closure, brings about a change in the permeability of the membrane to the K+ ions. This closes the stomata. During high water stress (low soil water potential) ABA is produced in the leaves and the stomata closes down to reduce transpiration.

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