Nutrient uptake suppression under stress
noun phrasePronunciation: /ˈnjuːtriənt ˈʌpteɪk səˈpreʃən ʌndər stres/
The reduction in plant absorption and translocation of mineral nutrients (nitrogen, phosphorus, potassium, micronutrients) caused by drought, salinity, temperature extremes, or heavy metal toxicity. This stress-induced nutrient limitation results from decreased root growth, reduced metabolic energy, and altered nutrient transporter expression, exacerbating primary stress effects.
Plain English
The inability of stressed plants to absorb soil nutrients efficiently, worsening their overall health and survival.
Etymology & History
Usage
"Nutrient uptake suppression under drought stress reduced crop nitrogen concentration by 40% compared to irrigated controls."
Style guide notes: Specify nutrient type and stress condition; distinguish between uptake inhibition and translocation blockage.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
Why does drought suppress nutrient uptake?
Reduced water availability decreases root-to-soil contact, nutrient diffusion rates, and metabolic energy for active transport.
Can nutrient application overcome stress effects?
Partial mitigation occurs; however, excessive fertilization can increase salt stress and may not restore full stress tolerance.
Why Test Candidates on This?
Important for understanding multi-stress interactions and practical crop management under combined environmental constraints.
Required skill level: Mid