1887

Abstract

Most strains of are capable of switching spontaneously and at high frequency between a number of phenotypes distinguishable by colony morphology. The switching frequency of strain WO-1 between two predominant phenotypes, ‘white’ and ‘opaque’, and a minor phenotype, ‘fuzzy’, increased dramatically with low doses of ultraviolet irradiation that killed less than 20% of the population. The ultraviolet irradiation effect continued to be expressed over many generations as evidenced by stimulated sectoring. Ultraviolet irradiation stimulated switching in both the white-to-opaque and opaque-to-white direction, suggesting that a common mechanism functions in both directions.

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/content/journal/micro/10.1099/00221287-135-5-1201
1989-05-01
2019-11-18
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http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-135-5-1201
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