- growth/behavioral processes
- plant life cycle and development
- elongation during root and stem growth
- required for fruit growth and delays fruit senescence
- important in phototropism
Abscisic Acid:
- reacts to stress like temperature
- abscission of fruits
- inhibits plant growth to make sure it can survive stress
- induces seeds to synthesize storage proteins
Ethylene:
- stimulates release of dormancy
- stimulates root and shoot growth
- leaf and root abscission
- stimulates fruit ripening and flower opening
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