Electron Microscopy of Ascus Formation in the Yeast Debaryomyces hansenii

N.J.W. Kreger-van Rij, M. Veenhuis

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Abstract

Ascus formation in Debaryomyces hansenii includes fusion of two cells, usually mother and daughter while still attached to each other, through short protuberances developed from the cross wall between them. Nuclear fusion takes place in the channel connecting the two cells; meiosis apparently occurs in the mother cell. Generally, only one lobe of the meiotic nucleus is surrounded by a prospore wall and it becomes the nucleus of a spore with a warty wall. The rest of the nucleus disappears. The spores germinate by swelling in the ascus and forming one or more buds.
Original languageEnglish
Number of pages9
JournalJournal of general microbiology
Volume89
Issue number2
DOIs
Publication statusPublished - 1975

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