HETEROCARYOSIS AND GENETIC RECOMBINATION IN STREPTOMYCES GRISEOFLAVUS
- 1 December 1958
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Microbiology
- Vol. 4 (6) , 571-580
- https://doi.org/10.1139/m58-064
Abstract
Upon prolonged incubation of two auxotrophic mutants from Streptomyces griseoflavus 142 plated together on minimal medium, heterocaryotic colonies producing only parental type conidia were formed. In addition, from the mixed culture of two double auxotrophs on a medium supplemented with limited amounts of nutrients, stable recombinant-type conidia were recovered at relatively high frequencies. According to these observations, it is suggested that genetic recombination occurs in heterocaryotic mycelial growth antecedent to conidiation. However, complete synapsis appears to be doubtful because of the unbalanced patterns of recombinant recovery.Keywords
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