Hypoxia-induced anaerobic metabolism
nounPronunciation: /haɪˈpɒksiə ɪnˈdjuːst ænˈeɪrəʊbɪk mɛtəˈbɒlɪzəm/
The shift from aerobic respiration to alternative metabolic pathways when dissolved oxygen availability becomes critically limited in flooded or waterlogged plant tissues. This process includes fermentation, lactate production, and activation of alternative electron transport systems.
Plain English
The change in how plant cells produce energy when flooded and oxygen becomes scarce, using alternative chemical pathways.
Etymology & History
Usage
"Hypoxia-induced anaerobic metabolism in rice roots generates ATP through ethanol fermentation pathways during prolonged waterlogging."
Style guide notes: Use 'hypoxia-induced' to specify stress-triggered activation rather than constitutive anaerobic pathways.
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Related Terms
Frequently Asked Questions
What are the main anaerobic pathways activated under hypoxia?
Ethanol fermentation, lactate production, and alanine aminotransferase pathways activate to maintain minimal ATP generation without oxygen.
Why is anaerobic metabolism inefficient compared to aerobic respiration?
Anaerobic pathways generate only 2 ATP per glucose versus 30-32 ATP in aerobic respiration, limiting energy for survival.
Why Test Candidates on This?
Essential for understanding survival mechanisms in flood-prone crops and wetland plant adaptations to oxygen-limited environments.
Required skill level: Senior