Ion Sequestration Capacity
noun phrasePronunciation: /ˈaɪən sɪˌkwɛstreɪʃən kəˈpæsɪti/
The ability of plant cells to compartmentalize excess ions (particularly Na+ and Cl-) into vacuoles or specific tissues to prevent interference with metabolic processes. This mechanism maintains cytoplasmic ion homeostasis while allowing accumulation in less sensitive compartments.
Plain English
The plant's ability to store excess harmful ions away in specific cell compartments to protect sensitive metabolic processes.
Etymology & History
Usage
"Salt-tolerant halophytes demonstrated superior ion sequestration capacity, accumulating Na+ in vacuoles without compromising enzymatic activity in the cytoplasm."
Style guide notes: Always specify which ions are being sequestered to avoid ambiguity in technical writing.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
Which ions are typically sequestered in salt-stressed plants?
Sodium (Na+) and chloride (Cl-) ions are primarily sequestered in vacuoles, while potassium (K+) is retained in metabolically active cytoplasm.
How does ion sequestration differ from ion exclusion?
Sequestration compartmentalizes ions after uptake, while exclusion prevents ion uptake entirely; both are salt-tolerance strategies.
Why Test Candidates on This?
Essential for understanding salinity stress responses and is frequently examined in plant physiology and stress tolerance assessments.
Required skill level: Mid