Nutrient deficiency-induced senescence
nounPronunciation: /ˈnjuːtriənt dɪˌfɪʃənsi ɪnˈdjuːst ˈsenɛsəns/
Accelerated leaf aging and programmed cell death triggered by insufficient availability of essential macro- or micro-nutrients. This stress response prioritizes nutrient remobilization to developing tissues at the expense of older leaves.
Plain English
When plants lack essential nutrients like nitrogen or phosphorus, they age their leaves faster to redirect nutrients to new growth.
Etymology & History
Usage
"Nitrogen deficiency-induced senescence in rice accelerated yellowing and nutrient reallocation to panicle development."
Style guide notes: Specify which nutrient is deficient; avoid vague 'nutrient stress senescence' without identifying the limiting element.
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Related Terms
Frequently Asked Questions
Which nutrients most commonly trigger premature senescence?
Nitrogen, phosphorus, and potassium deficiencies are primary triggers due to their high remobilization rates.
How do plants benefit from deficiency-induced senescence?
Plants recover and reuse nutrients from senescing leaves to support new growth and reproductive tissues.
Why Test Candidates on This?
Relevant in crop nutrition and soil science assessments examining plant responses to nutrient limitation.
Required skill level: Mid