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Nocardia-like mutants of a soil coryneform bacterium

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A rod-shaped, morphologically stable coryneform soil isolate, strain 9b, gives rise to filamentous and nocardioform mycelial mutants when submitted to mutagenic treatment. Stepwise selection for increasing average length of the rods appears to be necessary to obtain the mycelial form. The mycelial mutant reproduces by fragmentation of the mycelium in the stationary phase of growth and the rough variant exhibits aerial hyphae.

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Jičínská, E. Nocardia-like mutants of a soil coryneform bacterium. Archiv. Mikrobiol. 89, 269–272 (1973).

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  • Stationary Phase
  • Average Length
  • Stepwise Selection
  • Aerial Hypha
  • Mutagenic Treatment