Nitrogen remobilization efficiency
noun phrasePronunciation: /ˈnaɪtrədʒən ˌriməˈbɪləˌzeɪʃən ɪˈfɪʃənsi/
The capacity of plants to translocate and redistribute nitrogen from senescing or stressed tissues to actively growing organs and reproductive structures. This process preserves nitrogen availability and productivity despite nutrient limitations imposed by abiotic stress conditions.
Plain English
A plant's ability to move nitrogen from older leaves to new growth when stressed, maximizing nutrient use.
Etymology & History
Usage
"High nitrogen remobilization efficiency allowed nutrient-deficient plants to sustain seed production despite restricted root uptake."
Style guide notes: Quantify as percentage of total plant nitrogen or as kg N remobilized per unit biomass produced.
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Frequently Asked Questions
Which plant tissues are primary sources of remobilized nitrogen?
Mature leaves, senescing tissues, and vegetative shoots provide mobile nitrogen pools.
How does stress accelerate nitrogen remobilization?
Stress hormones trigger earlier senescence and proteolysis, releasing amino acids for translocation to sinks.
Why Test Candidates on This?
Highly relevant for evaluating crop productivity under nutrient stress and drought-induced nitrogen limitation scenarios.
Required skill level: Mid