ABSTRACT

A detailed description of a system is in effect a dissection. Initially, we gathered the various systems that make up microbial aggregation, put them all together, and then dissected each of the better studied systems as shown to us predissected in the literature by the original investigators. Described in detail were a number of fairly well studied bacterial and yeast aggregation systems. The bacterial systems we have covered include mating-aggregate formation in Escherichia coli; star formation in rhizobia, pseudomonads, and other bacteria; pellicle formation in fimbriate bacteria; agglutination associated with bacterial transformation; formation of dental plaque and aggregation of oral bacteria; cell aggregation in Streptococcus faecalis; cell aggregation in myxobacteria; and other bacterial aggregation systems. The yeast systems include sexual agglutination in Hansenula wingei, sex-directed flocculation in Schizosaccharomyces pombe, sexual agglutination in Saccharomyces cerevisiae, flocculation in the brewery, and other yeast aggregation systems.