Anoxic Stress Response
nounPronunciation: /ænˈɑːksɪk ˈstrɛs rɪˈspɑːns/
The coordinated metabolic and molecular adjustments plants execute when exposed to oxygen-depleted conditions in waterlogged or flooded soils. Response mechanisms include activation of fermentation pathways, ethylene signaling, and aerenchyma formation.
Plain English
Plant reactions and survival strategies when roots lack oxygen in waterlogged soil.
Etymology & History
Usage
"The anoxic stress response in rice involves rapid aerenchyma development and shift to anaerobic metabolism."
Style guide notes: Distinguish between anoxic (complete oxygen absence) and hypoxic (reduced oxygen); use precisely in research contexts.
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Contrasted with
Related Terms
Frequently Asked Questions
How do plants survive anoxic conditions?
Plants switch to fermentation, produce ethylene for signaling, develop air-conducting tissues (aerenchyma), and alter gene expression patterns.
Which crops show strong anoxic stress tolerance?
Rice, wetland species, and flood-adapted genotypes demonstrate enhanced survival through constitutive aerenchyma and metabolic flexibility.
Why Test Candidates on This?
Critical in assessments of flood tolerance mechanisms and agricultural resilience to extreme weather events.
Required skill level: Senior