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 each plant material, 200 protoplasts were evaluated, and the percentage of the protoplasts belonging to different diameter categories was determined.
Both physical and physiological damages were observed as Al concentration increased, and apoptosis may have been mainly caused by Al present in the protoplasts of bamboo seedlings, as supported by microscopy evidence.
1991, "Stable transformation of Sorghum bicolor protoplasts with chimeric neomycin phosphotransferase II and b-glucuronidase genes", Theor.
The giant multi-nucleate cells of the green alga, Boergesenia forbesii, undergo segregative cell division upon wounding such that small protoplasts are formed within 2 hours.
First, other scientists got foreign genes to pass into corn protoplasts but couldn't get the protoplasts to grow into full plants.
Content and vacuole/extravacuole distribution of neutral sugars, free amino acids, and anthocyanins in protoplast.
Regeneration of fertile barley plants from mechanically isolated protoplasts of the fertilized egg cell Plant Cell 6: 531-543.
1985, "Vacuolar localization of 1-sinapylglucose: L-malate sinapoyltransferase in protoplasts from cotyledons of Raphanus sativus," Planta, 163, pp.
Approximately 25-30% of cultured protoplasts in KM8P culture medium regeneraged cell walls after 48 hours and of these 3% emitted bright green fluorescence when illuminated with UV-blue light.
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.