plasmodesma

plasmodesma
/plaz'meuh des"meuh/, n., pl. plasmodesmata /-meuh teuh/. Bot.
any of many minute strands of cytoplasm that extend through plant cell walls and connect adjoining cells.
[ < G (1901) < Gk plasmo- PLASMO- + désma bond, fetter]

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▪ plant anatomy
plural  plasmodesmata 

      microscopic cytoplasmic canal that passes through plant-cell walls and allows direct communication of molecules between adjacent plant cells. Plasmodesmata are formed during cell division, when traces of the endoplasmic reticulum become caught in the new wall that divides the parent cell. The two progeny cells may be connected by thousands of plasmodesmata, which contain rings of membrane at each end that are thought to regulate the passage of molecules. By overcoming the plasma-membrane barrier, plasmodesmata unite plant cells into syncytial tissues (masses of cytoplasm that have multiple nuclei).

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Universalium. 2010.

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Look at other dictionaries:

  • plasmodesma — plasmodesma. См. плазмодесма. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Plasmodesma — Plasmodesmata (singular: plasmodesma) are microscopic channels which traverse the cell walls of plant cellsOparka, K. J. (2005) Plasmodesmata. Blackwell Pub Professional. ISBN 10: 1405125543ISBN 13: 9781405125543] [… …   Wikipedia

  • Plasmodesma — Ein Plasmodesmos (auch: Plasmodesma) ist ein dünner, von einer Plasmamembran umgebener Plasmastrang, der durch die Zellwand einer Pflanzen Zelle hindurch zur Nachbarzelle eine Verbindung schafft. Dank solcher Plasmodesmen kann somit über die… …   Deutsch Wikipedia

  • plasmodesma — also plasmodesm noun (plural plasmodesmata or plasmodesmas) Etymology: New Latin plasmodesma, from plasma + Greek desmat , desma bond, from dein to bind more at diadem Date: 1905 one of the cytoplasmic strands passing through openings in some… …   New Collegiate Dictionary

  • plasmodesma — (= plasmodesmata (plural) ) Narrow tube of cytoplasm penetrating the plant cell wall, linking the protoplasts of two adjacent cells. A desmotubule runs down the centre of the tube, which is lined by plasma membrane …   Dictionary of molecular biology

  • plasmodesma — noun A microscopic channel traversing the cell walls of plant cells and some algal cells, enabling transport and communication between them …   Wiktionary

  • plasmodesma — pl.m. plasmodesmi …   Dizionario dei sinonimi e contrari

  • plasmodesma — plas·mo·des·ma …   English syllables

  • plasmodesma — plas•mo•des•ma [[t]ˌplæz məˈdɛs mə[/t]] n. pl. ma•ta [[t] mə tə[/t]] hic (lab cbl)bot any of many minute strands of cytoplasm that extend through plant cell walls and connect adjoining cells • Etymology: < G (1901) < Gk plasmo plasmo +désma …   From formal English to slang

  • plasmodesma — pl plasmodesmata Fine protoplasmic thread that connects adjacent plant cells by passing through the plant cell wall. Exploited by viruses as a conduit for cell to cell movement …   Glossary of Biotechnology

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