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 ?
For protoplast isolation, 1 g of plant material was placed in petri dishes containing a plasmolyzing solution of sorbitol 0,5 M for 1-2 hours.
Isolation, regeneration and fusion of protoplasts of Phycomyces.
In electroporation, plant protoplasts are exposed to a sudden electrical shock that opens up pores in the plant cell and enables DNA to enter.
Cytoplasmic strands connect the protoplasts of adjacent cells, making the living material of the cells continuous within the plant.
The extant extrabiblical Adamschriften, as well as other apocryphal or pseudepigraphical compositions that include discussion of the protoplasts and their progeny, are likewise innocent of this narrative event.
Using a mix of conventional and advanced breeding techniques -- such as anther culture, tissue culture, hybrid sorting, and protoplast fusion -- B&W eventually produced Y-1.
By using tissue cultures, breeders have used protoplast fusion as a non-sexual means of introducing new genetic material into specific plants.
Maceration and protoplast production from tomato tissues with the enzymic complex from autolyzed cultures of Alternaria alternata.
This single-cell regrowth, or protoplast regeneration, is the first step in a new assault on world hunger.
Agency for International Development, "In the long run, techniques such as recombinant DNA, protoplast fusion and the .
KeyGene will apply its expertise in molecular breeding, vegetable genetics and tomato protoplast technology to perform the research.