tonoplast: meaning, definition, pronunciation and examples
C1/C2 (Specialist)Technical/Scientific
Quick answer
What does “tonoplast” mean?
The cytoplasmic membrane that surrounds the vacuole in a plant cell.
Audio
Pronunciation
Definition
Meaning and Definition
The cytoplasmic membrane that surrounds the vacuole in a plant cell.
In plant biology, the tonoplast is a specialized membrane that regulates the movement of ions, nutrients, and waste products into and out of the vacuole, playing a crucial role in turgor pressure, pH regulation, and storage.
Dialectal Variation
British vs American Usage
Differences
No lexical or usage differences exist. Spelling and pronunciation are identical.
Connotations
Identical technical connotations in all scientific contexts.
Frequency
Identically rare, used only in botany, plant physiology, and cell biology texts and discourse.
Grammar
How to Use “tonoplast” in a Sentence
The tonoplast + verb (regulates, surrounds, contains)Tonoplast + noun (proteins, channels, integrity)Adjective + tonoplast (intact, isolated, vacuolar)Vocabulary
Collocations
Examples
Examples of “tonoplast” in a Sentence
verb
British English
- The membrane is said to tonoplast the vacuole.
- Proteins that tonoplast the compartment are under study.
American English
- Researchers aim to tonoplast the artificial vacuole.
adverb
British English
- The vesicle fused tonoplastly.
- The signal was localized tonoplastly.
American English
- The protein is targeted tonoplastly.
adjective
British English
- The tonoplast membrane was clearly visible.
- Tonoplast integrity is crucial for turgor.
American English
- Tonoplast channels were analyzed.
- The study focused on tonoplast proteins.
Usage
Meaning in Context
Business
Not used.
Academic
Exclusively used in advanced biological sciences, particularly in botany, plant physiology, and cell biology research papers and textbooks.
Everyday
Never used.
Technical
The primary and only context. Used to describe a specific cellular component with precision.
Vocabulary
Synonyms of “tonoplast”
Neutral
Weak
Watch out
Common Mistakes When Using “tonoplast”
- Misspelling as 'tonoplost' or 'tonnoplast'.
- Confusing it with the plasma membrane (cell membrane).
- Using it in non-biological contexts.
FAQ
Frequently Asked Questions
No. Animal cells do not have a large central vacuole, so the term 'tonoplast' is exclusive to plant cells and some other eukaryotic organisms like fungi that have vacuoles.
The plasma membrane is the outer boundary of the entire cell, while the tonoplast is the inner membrane surrounding only the vacuole.
It is very difficult. The tonoplast is a thin, single membrane. While the vacuole itself is often visible, distinguishing its boundary membrane typically requires higher-resolution techniques like electron microscopy.
Yes. It comes from the Greek 'tonos' (tension, tone) and 'plastos' (formed, molded), referring to its role in maintaining cellular turgor pressure.
The cytoplasmic membrane that surrounds the vacuole in a plant cell.
Tonoplast is usually technical/scientific in register.
Tonoplast: in British English it is pronounced /ˈtɒnə(ʊ)plɑːst/, and in American English it is pronounced /ˈtoʊnəˌplæst/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'TONE-o-plast' – it's the membrane that helps set the TONE or pressure inside the plant cell's vacuole.
Conceptual Metaphor
The tonoplast can be conceptualized as the **gatekeeper** or **security detail** of the vacuole, controlling what enters and exits this large storage compartment.
Practice
Quiz
What is the primary function of the tonoplast?