Parasexual Genetic Analysis of Cell Proportioning Mutants of DICTYOSTELIUM DISCOIDEUM
AUTOR(ES)
Morrissey, James H.
RESUMO
Eight independently isolated mutants of Dictyostelium discoideum that differentiate exclusively into stalk cells make up one complementation group and carry single recessive mutations at the stalky locus, stkA, located on linkage group II. KY19, a previously described strain that differentiates into spores, but not stalk cells, was found to possess a recessive mutation defining the stalkless locus, stlA, located on linkage group VI. An analysis of the properties of these mutants, together with the phenotype of a haploid double mutant carrying stkA and stlA indicates that stlA results in poorly organized stalk tubes and incomplete stalk cell differentiation, while stkA causes all of the cells to differentiate into stalk cells, even when not enclosed in the stalk tube. The significance of these results is discussed in relation to current theories of pattern formation in D. discoideum.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1214495Documentos Relacionados
- Use of Nystatin-Resistant Mutations in Parasexual Genetic Analysis in DICTYOSTELIUM DISCOIDEUM
- Parasexual Genetic Analysis of the Cellular Slime Mold DICTYOSTELIUM DISCOIDEUM A3
- Characterization of Dominant Resistance to Cobalt Chloride in DICTYOSTELIUM DISCOIDEUM and Its Use in Parasexual Genetic Analysis
- Chromosome Fragments in DICTYOSTELIUM DISCOIDEUM Obtained from Parasexual Crosses between Strains of Different Genetic Background
- Control of Cell Type Proportioning in Dictyostelium discoideum by Differentiation-Inducing Factor as Determined by In Situ Hybridization