Trends in the fertilization ofStreptomyces coelicolor A3(2) |
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Authors: | Luisa Lanfaloni Maria Rita Micheli Giuseppe Sermonti |
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Affiliation: | (1) Istituto di Biologia Cellulare, Università di Perugia, Perugia, Italy |
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Abstract: | SCP1 and SCP2 (in the SCP2* state) fertility plasmids ofStreptomyces coelicolor A3(2) elicit recombination in SCP1+×SCP1- or SCP2*×SCP2- crosses. The rate is essentially constant (c. 10-4) if referred to the plasmid-less parent, irrespective of extreme variations in the parent balance. In interrupted matings the alleles of the plasmid-less parent gradually increase in frequency in successive samples. The mobilization of the chromosome of the plasmid-less strain appears to be the primary event in merozygote formation. |
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Keywords: | Plasmids Fertility factors Recombination Chromosome transfer Melozygotes Streptomyces coelicolor |
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