protoplast


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protoplast

 [pro´to-plast]
a bacterial, yeast, or fungal cell deprived of its rigid wall but with its plasma membrane intact; the cell is dependent for its integrity on an isotonic or hypertonic medium.

pro·to·plast

(prō'tō-plast),
1. Archaic term meaning the first individual of a type or race.
2. A bacterial cell from which the rigid cell wall has been completely removed; the bacterium loses its characteristic form.
[proto- + G. plastos, formed]

protoplast

/pro·to·plast/ (-plast) a bacterial or plant cell deprived of its rigid wall but with its plasma membrane intact; the cell is dependent for its integrity on an isotonic or hypertonic medium.

protoplast

(prō′tə-plăst′)
n.
A cell of a plant, fungus, bacterium, or archaeon from which the cell wall has been removed, leaving the protoplasm and plasma membrane.

pro′to·plas′tic adj.

protoplast

[prō′təplast]
Etymology: Gk, protos + plassein, to mold
1 (in biology) the protoplasm of a cell without its containing membrane.
2 a first entity or an original. protoplastic, adj.

pro·to·plast

(prō'tō-plast)
A bacterial cell from which the rigid cell wall has been completely removed; the bacterium loses its characteristic form.
[proto- + G. plastos, formed]

protoplast

a CELL from which the CELL WALL has been removed completely.

protoplast

a bacterial or plant cell deprived of its rigid wall but with its plasma membrane intact; the cell is dependent for its integrity on an isotonic or hypertonic medium. In bacteria, specifically refers to gram-positive organisms. See also spheroplast.
References in periodicals archive ?
The Effect of the Dis-integrin Peptide Arginine-Glycine-Aspartic Acid on Protoplasts of Boergesenia forbesii.
Austin-Phillips has already produced a potato plant by protoplast fusion that can be used in breeding nematode resistance.
Inserted a gene for antibiotic resistance into specially prepared corn-plant cells called protoplasts, and grew the protoplasts into whole corn plants.
Regeneration of fertile barley plants from mechanically isolated protoplasts of the fertilized egg cell Plant Cell 6: 531-543.
Domir, with the Agriculture Department's Agricultural Research Service in Delaware, Ohio, has succeeded in growing Pioneer elm trees from protoplasts (single cells with their walls removed.
Content and vacuole/extera vacuole distribution of neutral sugars, free amino acids and anthocyanin in protoplast.
In the third stage, the stream of newly activated spores is exposed to alpha particle bombardment via a small, safe, self-contained, low-level polonium source that damages the spores' DNA containing protoplast -- effectively killing the spore and making it incapable of germinating or producing infection.
First, the rigid cell wall has to be removed with enzymes, leaving a cell called a protoplast.
The rolB gene of Agrobacterium rhizogenes does not increase the auxin sensitivity of tobacco protoplast by modifying the intracellular auxin concentration.
Water stress in susceptible protoplast will damage cell membrane and breaks the continuity of plastid membrane, mitocondri, nucleus, plasmalema an dictosom membrane.
The stream of newly activated spores are then exposed to alpha particle bombardment via a polonium source, which damages the DNA containing protoplast causing spore death and an inability to complete germination and produce toxin.