Phytohormone signaling cascade
nounPronunciation: /ˌfaɪtoʊˈhɔːrmoʊn ˈsɪɡnəlɪŋ kæˈskeɪd/
The series of molecular events initiated by hormone-receptor binding that triggers gene expression and physiological responses to abiotic stress. These cascades involve signal transduction pathways with multiple regulatory checkpoints controlling plant stress adaptation.
Plain English
The chain of chemical reactions triggered by plant hormones that activates stress response genes.
Etymology & History
Usage
"The phytohormone signaling cascade initiated by ABA led to rapid expression of aquaporin genes, reducing water loss."
Style guide notes: Use full term in first mention; subsequent references may use 'signaling cascade' if context is clear.
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Frequently Asked Questions
What initiates a phytohormone signaling cascade?
Hormone binding to specific receptors on cell membranes initiates the cascade.
What do phytohormone cascades ultimately regulate?
They regulate gene expression controlling stress response proteins and metabolites.
Why Test Candidates on This?
Advanced concept relevant to molecular mechanisms research and graduate-level examinations.
Required skill level: Senior