Flow-driven instabilities during pattern formation of Dictyostelium discoideum
نویسندگان
چکیده
منابع مشابه
Proportion regulation without pattern formation in Dictyostelium discoideum.
When shaken in a glucose-albumin-cAMP medium, dissociated aggregative cells formed small clumps, in which both prespore and prestalk cells differentiated in essentially the same proportions as in a slug. Immunocytochemical staining of sections of such clumps revealed that the two types of cells showed no particular pattern of distribution, unlike the two-zoned prestalk-prespore pattern as obser...
متن کاملA model for pattern formation in Dictyostelium discoideum
tions in the mound stage of the cellular slime mold Dictyostelium discoideum has been developed. The model is based on current information about morphogenetic signaling that controls the differentiation of prestalk and prespore cells from differentiation-competent cells. The morphogens that can control the cell-type transitions are: (i) cAMP, which is required for both prestalk and prespore dif...
متن کاملSpatial pattern formation during aggregation of the slime mould Dictyostelium discoideum.
Stream formation and spiral wave behaviour during the aggregation of Dictyostelium discoideum (Dd) are studied in a model based on the Martiel-Goldbeter equations for cAMP relay, combined with chemotactic motion of Dd cells. The results show that stream formation occurs if the turnover rate of intracellular cAMP is increased. This increase in the turnover rate of cAMP[in] leads to a dependence ...
متن کاملPattern formation in Dictyostelium discoideum. II. Differentiation and pattern formation in non-polar aggregates.
Cells of the cellular slime mould D. discoideum were allowed to form into spherical aggregates, by shaking vegetative cells as a suspension in phosphate buffer. In such conditions, grex polarity is never established and surface sheath is not formed (Loomis, 1975 a). Despite the absence of such characteristics of normal development, differentiation of prespore cells, as tested for by immunofluor...
متن کاملDictyostelium discoideum during Growth in Axenic Culture
1. The specific activities of fl-N-acetylglucosaminidase, acid phosphatase, ac-mannosidase, P-glucosidase, UDP-glucose pyrophosphorylase and alkaline phosphatase have been determined in myxamoebae of the cellular slime mould Dictyostelium discoideum Ax-2 grown on different media and in different phases of the growth cycle. 2. Variations in enzymic composition occur with changes in growth medium...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2015
ISSN: 1367-2630
DOI: 10.1088/1367-2630/17/6/063007