The Development of Dictyostelium Discoideum by William F. Loomis

By William F. Loomis

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This means that at low density fewer amoebae will lie inside a territory and, therefore, the resulting fruiting bodies will be correspondingly small. If amoebae, washed free of bacteria, are plated out at different densities, then the amoeba density-aggregation center density relationship becomes more 22 John Tyler Bonner complex (Sussman and Sussman, 1961; Feit, 1969; Hashimoto et al, 1975; Waddell, 1982a). It is clear from direct experiments of Shaffer (1963) on P. violaceum that once an initial "founder" cell is formed, it inhibits other cells from becoming founder cells in its vicinity.

Bull. Torrey Bot. Club 5 6 , 227-258. Harper, R. A. (1932). Organization and light relations in Polysphondylium. Bull. Torrey Bot. Club 5 9 , 49-84. , Cohen, M. , and Robertson, A. (1975). Cell density dependence of the aggregation characteristics of the cellular slime mold Dictyostelium discoideum. J. Cell. Sei. 19, 215-229. Hohl, H. R. (1976). Myxomycètes. In "The Fungal Spore: Form and Function" (D. J. Weber and W. M. ), pp. 464-500. Wiley, New York. Hohl, H. , Markwalder, M. (1977). Influence of cAMP on cell differentiation and morphogenesis in Polysphondylium.

1969). Evidence for the regulation of aggregate density by the production of ammonia in the cellular slime molds. D. Thesis, Princeton University, Princeton, New Jersey. Feit, I. , Fournier, G. , Needleman, R. , and Underwood, M. Z. (1978). Induction of stalk and spore cell differentiation by cyclic AMP in slugs of Dictyostelium discoideum. Science 200, 439-441. 30 John Tyler Bonner Filosa, M. F. (1962). Heterocytosis in cellular slime molds. Amer. Nat. 9 6 , 79-91. Filosa, M. F. (1979). Macrocyst formation in the cellular slime mold Dictyostelium mucoroides: involvement of light and volatile morphogenetic substance(s).

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