A NEW MATING COMPATIBILITY LOCUS IN PHYSARUM POLYCEPHALUM

[摘要] The rate and extent of plasmodium formation were studied in mating tests involving pairs of largely isogenic amoeba1 strains compatible for matingtype ( mt ) alleles. A systematic variability was observed: plasmodia formed either rapidly and extensively or slowly and inefficiently. Plasmodium formation was found to be 103- to 104-fold more extensive in "rapid" crosses than in "slow" crosses. A genetic analysis revealed that the variability reflects the influence of a multiallelic compatibility locus that determines mating efficiency. This compatibility locus (designated matB ), together with the original mating type locus mt (in this work designated matA ), constitute a tetrapolar mating specificity system in Physarum polycephalum .

[学科分类] 医学（综合）