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单词 tonoplast
释义

Definition of tonoplast in English:

tonoplast

nounˈtəʊnə(ʊ)plɑːstˈtəʊnə(ʊ)plastˈtō-
Botany
  • A membrane which bounds the chief vacuole of a plant cell.

    〔植〕液泡膜

    Example sentencesExamples
    • Aquaporins mediate the bidirectional passage of water over membranes and are present in tonoplasts and in plasma membranes of plant cells.
    • MIPs are abundant proteins localized to the plasma membrane, the tonoplast, or other endomembranes of plant cells.
    • The tonoplast of K. daigremontiana mesophyll cells exhibits circadian behaviour of malate retention under constant darkness.
    • The black material at the left edge of the micrograph is vacuolar tannin lining the tonoplast.
    • However, these cells had a continuous layer of smooth plasma membrane, and central vacuoles had distinct tonoplasts.

Origin

Late 19th century: from Greek tonos 'tension, tone' + plastos 'formed'.

Definition of tonoplast in US English:

tonoplast

nounˈtō-
Botany
  • A membrane which bounds the chief vacuole of a plant cell.

    〔植〕液泡膜

    Example sentencesExamples
    • The tonoplast of K. daigremontiana mesophyll cells exhibits circadian behaviour of malate retention under constant darkness.
    • However, these cells had a continuous layer of smooth plasma membrane, and central vacuoles had distinct tonoplasts.
    • The black material at the left edge of the micrograph is vacuolar tannin lining the tonoplast.
    • MIPs are abundant proteins localized to the plasma membrane, the tonoplast, or other endomembranes of plant cells.
    • Aquaporins mediate the bidirectional passage of water over membranes and are present in tonoplasts and in plasma membranes of plant cells.

Origin

Late 19th century: from Greek tonos ‘tension, tone’ + plastos ‘formed’.

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更新时间:2025/6/19 9:05:48