Ion toxicity accumulation
noun phrasePronunciation: /ˈaɪɑːn tɑːkˈsɪsɪti əˌkjuːmjəˈleɪʃən/
The excessive buildup of specific ions, particularly sodium and chloride, in plant tissues beyond critical threshold concentrations that disrupt cellular functions and enzymatic activity. This occurs under saline stress conditions and causes specific ion-induced damage independent of osmotic effects.
Plain English
Harmful salt ions accumulate in plant tissues to levels that poison cells and disrupt normal plant functions.
Etymology & History
Usage
"Ion toxicity accumulation in leaves caused necrotic lesions in glycophytes exposed to seawater irrigation."
Style guide notes: Always specify which ions are accumulating and tissue compartment involved for precision in technical communication.
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Frequently Asked Questions
Which ions cause the most damage under salinity stress?
Sodium and chloride ions cause primary injury, though boron and manganese also accumulate toxically in some conditions.
How do halophytes avoid ion toxicity accumulation?
Halophytes compartmentalize excess ions in vacuoles, reducing cytoplasmic concentrations and toxicity risk.
Why Test Candidates on This?
Critical for evaluating salt tolerance mechanisms and predicting crop performance in saline soils.
Required skill level: Mid