Phenotypic plasticity under abiotic stress
noun phrasePronunciation: /fɪˈnɒtɪpɪk ˈplæstɪsɪti ʌndər əˈbaɪɒtɪk stres/
The ability of individual plants with identical genotypes to modify their morphology, physiology, or biochemistry in response to varying environmental stress conditions without altering DNA sequences. This adaptive capacity allows plants to optimize performance across diverse stress scenarios.
Plain English
How plants with the same genes change their appearance and function to survive different stress conditions.
Etymology & History
Usage
"Phenotypic plasticity under abiotic stress enabled the cultivar to maintain competitive growth across drought, salt, and temperature extremes."
Style guide notes: Distinguish between reversible and irreversible plastic responses; specify stress type and duration when discussing plasticity.
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Frequently Asked Questions
How does phenotypic plasticity differ from genetic adaptation?
Plasticity occurs within one generation without DNA changes; genetic adaptation requires heritable mutations across generations.
What are examples of phenotypic plasticity under stress?
Root deepening under drought, leaf rolling in heat, and altered branching patterns under shade are common examples.
Why Test Candidates on This?
Important for understanding how plants survive stress variability and for breeding programs selecting stress-resilient varieties.
Required skill level: Senior