Anoxia tolerance
nounPronunciation: /ænˈɒksiə ˈtɒlərəns/
The physiological capacity of plants to survive and maintain metabolic function in oxygen-depleted environments, typically through anaerobic respiration and fermentation pathways. This trait is critical for plants exposed to flooding, waterlogging, or poorly aerated substrates.
Plain English
A plant's ability to survive and function when oxygen is unavailable in soil or water.
Etymology & History
Usage
"Rice varieties with enhanced anoxia tolerance exhibit sustained root growth and energy production under flooded paddy conditions."
Style guide notes: Distinguish anoxia tolerance from hypoxia tolerance; anoxia refers to zero-oxygen conditions while hypoxia indicates reduced oxygen.
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Contrasted with
Related Terms
Frequently Asked Questions
How do plants survive without oxygen?
Plants switch to anaerobic respiration and fermentation, producing ethanol and lactate for energy instead.
Which crops show strong anoxia tolerance?
Rice, wetland plants, and some flood-tolerant cultivars naturally exhibit anoxia tolerance mechanisms.
Why Test Candidates on This?
Relevant for assessments on flood-prone agriculture, wetland crop physiology, and climate adaptation strategies.
Required skill level: Senior