Chemotaxis and aggregation in the cellular slime mould

2008 ◽  
pp. 137-150
Author(s):  
Thomas Höfer
Keyword(s):  
Cellular Slime Mould ◽  
Slime Mould ◽  
Cellular Slime

Trehalose in the Cellular Slime Mould Dictyostelium mucoroides

Nature ◽  
1961 ◽  
Vol 192 (4807) ◽  
pp. 1077-1078 ◽  
Author(s):  
JAMES S. CLEGG ◽  
MICHAEL F. FILOSA
Keyword(s):  
Cellular Slime Mould ◽  
Slime Mould ◽  
Cellular Slime

scholarly journals Growth of myxamoebae of the cellular slime mould Dictyostelium discoideum in axenic culture

1970 ◽  
Vol 119 (2) ◽  
pp. 171-174 ◽  
Author(s):  
D. J. Watts ◽  
J. M. Ashworth
Keyword(s):  
Cell Differentiation ◽  
Dictyostelium Discoideum ◽  
Axenic Culture ◽  
Axenic Medium ◽  
Cellular Slime Mould ◽  
Slime Mould ◽  
Solid Media ◽  
Cellular Slime

1. A simple axenic medium suitable for the growth of the myxamoebae of a strain of the cellular slime mould Dictyostelium discoideum is described. 2. Procedures suitable for the growth of this strain in liquid and on solid media are described. 3. Conditions suitable for initiating the cell differentiation of myxamoebae grown axenically are described.

Control of cellular differentiation by temperature in the cellular slime mould Dictyostelium discoideum

1984 ◽  
Vol 69 (1) ◽  
pp. 159-165
Author(s):  
M. Maeda
Keyword(s):  
Low Temperature ◽  
Dictyostelium Discoideum ◽  
Cellular Differentiation ◽  
Cellular Slime Mould ◽  
Slime Mould ◽  
Cellular Slime

The effects of low temperature on morphogenesis and cellular differentiation of Dictyostelium discoideum were examined. During incubation at 5 degrees C, the vegetative and preaggregation cells never developed, but cell masses at the aggregation or slug stage developed to form hemispherical, or dumbbell-shaped multicellular structures. By staining with FITC-antispore IgG, the structures formed after 10 days of incubation of tipped aggregates at 5 degrees C were found to be composed of 90% spores, 5% prespore cells and 5% non-stained cells. Since only 20% of the total cells constituting the tipped aggregate had been prespore cells at the beginning of incubation, this showed that spore differentiation proceeded even at low temperature, while stalk differentiation was completely inhibited. Similar results were obtained when the cells were incubated at 3 degrees C. However, at 0 degree C, morphogenesis and cellular differentiation did not occur, although most of the prespore cells at the late culmination stage differentiated incompletely into spores. Possible reasons for the high proportion of spores being induced by low temperature are discussed.

Spots and stripes: the patterning spectrum in the cellular slime mould Polysphondylium pallidum

Development ◽  
1989 ◽  
Vol 105 (2) ◽  
pp. 323-333
Author(s):  
J.G. McNally ◽  
E.C. Cox
Keyword(s):  
Pattern Formation ◽  
Specific Antigen ◽  
Spherical Cell ◽  
The Novel ◽  
Cellular Slime Mould ◽  
Slime Mould ◽  
Size And Shape ◽  
Polysphondylium Pallidum ◽  
Cellular Slime ◽  
Pattern Determination

Whorls of the cellular slime mould Polysphondylium pallidum originate as spherical cell masses that during normal morphogenesis produce tips only at equidistant positions around their equator. We have observed a series of new patterns in whorls that differ from normal whorls only in that they are larger or more elongated. Among the novel patterns found were arrays of tips distributed fairly regularly over the whole whorl surface, as well as striped patterns detected at earlier stages with a tip-specific antigen. These altered patterns demonstrate that a whorl's size and shape are by themselves important factors in pattern determination. We have compared the range of observed patterns to those predicted by a variety of different theories. We find that while no one theory can account in detail for all of our observations, predictions based on Turing's scheme of pattern formation come the closest.

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