A Mating-type System in an Acellular Slime-mould

@article{Dee1960AMS,
  title={A Mating-type System in an Acellular Slime-mould},
  author={Jennifer Dee},
  journal={Nature},
  year={1960},
  volume={185},
  pages={780-781}
}
  • J. Dee
  • Published 1 March 1960
  • Biology
  • Nature
AN investigation of the life-cycle of the acellular slime-mould (myxomycete) Physarum polycephalum has revealed that a mating-type system exists in this organism, and analysis of this system has been carried out. The existence of mating-types in myxomycetes has previously been suggested by Skupienski1 as a result of his work on Didymium nigripes, and D. difforme, but the situation was not fully investigated. 

Recombination in a Myxomycete

The present work reports an attempt at genetic analysis in a Myxomycete and demonstrates recombination in the species studied, Physarum polycephalum Schw.

Recombination in a Myxomycete, Physarumpolycephalum Schw

The present work reports an attempt at genetic analysis in a Myxomycete and demonstrates recombination in the species studied, Physarum polycephalum Schw.

Recombination in a Myxomycete, Physarum polycephalum Schw.

The uninucleate cells that form part of the life-cycle (the ‘amoebae’), in two-membered culture with Pseudomonas fluorescens, were found to be suitable for handling by some of the standard techniques of microbial genetics, including plating, and tested for mating-type and emetine resistance.

A New Mating Compatibility Locus in PHYSARUM POLYCEPHALUM.

A genetic analysis revealed that the variability in plasmodium formation reflects the influence of a multiallelic compatibility locus that determines mating efficiency in Physarum polycephalum.

Differences Associated with Mating Type Alleles in Myxomycetes

Intergeneric differences and similiarities were shown in the electrophoretic patterns of the myxamoebal protein extracts from P. polycephalum, D. iridis, and Dictyostelium discoideum when compared.

The mating type system of the myxomycete Physarum flavicomum.

Dee (1960), worked with Physarum polycephalum, and Collins (1961), working with Didymium iridis, definitely proved that an incompatibility mechanism does exist in the Myxomycetes and established the fact that multiple alleles are present at the incompatibility locus in D. iridis.

A Third Multiallelic Mating-type Locus in Physarum polycephalum

It is concluded that imz is a mating compatibility locus; thus the mating-type system of P. polycephalum comprises three multiallelic loci: matA, matB and imz.

Genetic analysis of the reproductive system of the true slime mold Comatricha lurida

An isolate of Comatricha lurida was analyzed genetically to determine the nature of its reproductive cycle, indicating this isolate possessed two mating alleles, A1 and A2, at one locus.

STUDIES OF MULTIPLE ALLELISM IN THE MYXOMYCETE DIDYMIUM IRIDIS

Existence of a two-locus system with linkage of parental alleles is suggested to explain the mating behavior of the pure clones handled and the absence of tetrapolarity in three physiological races of Didymium iridis.
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