Effect of restrictive conditions on the growth and morphology of a temperature-sensitive mannose-requiring mutant of Aspergillus nidulans.

Abstract excerpt

When incubated at 45 degrees C in the absence of added mannose, pregrown hyphae of a temperature-sensitive, mannose-relief mutant (mnrA455) of Aspergillus nidulans grew normally for a short time (4-5 h) before exhibiting an abnormal morphology consisting of the production by hyphae of discrete spherical swellings called balloons. These swellings could be up to 10 microns in diameter and were produced either at or...

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