HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Coluccio, A. Articles by Neiman, A. M. Search for Related Content PubMed PubMed Citation Articles by Coluccio, A. Articles by Neiman, A. M. Agricola Articles by Coluccio, A. Articles by Neiman, A. M.

Interspore bridges: a new feature of the Saccharomyces cerevisiae spore wall

Department of Biochemistry and Cell Biology and Institute for Cell and Developmental Biology, State University of New York, Stony Brook, 332 Life Sciences, Stony Brook, NY 11794-5215, USA

Correspondence
Aaron M. Neiman
Aaron.Neiman{at}sunysb.edu

The Saccharomyces cerevisiae spore wall is a multilaminar coat that surrounds individual spores and protects them from environmental insult. Scanning electron microscopy reveals that the four spores of an ascus are connected by interspore bridges. Transmission electron microscopy of spores indicates that these bridges are continuous with the outer layers of the spore wall. In chs3 mutants, which lack the chitosan and dityrosine layers of the spore wall, bridges are absent. By contrast, in dit1 mutants, which lack only the dityrosine layer, bridges are present, suggesting that the bridges may be composed of chitosan. Interspore bridges are shown to be necessary to hold spores together after release from the ascus. A function for these bridges in the maintenance of heterozygous markers in a homothallic yeast population is proposed.

This article has been cited by other articles:

				I. J. Tsai, D. Bensasson, A. Burt, and V. Koufopanou Population genomics of the wild yeast Saccharomyces paradoxus: Quantifying the life cycle PNAS, March 25, 2008; 105(12): 4957 - 4962. [Abstract] [Full Text] [PDF]

				L. G. Baker, C. A. Specht, M. J. Donlin, and J. K. Lodge Chitosan, the Deacetylated Form of Chitin, Is Necessary for Cell Wall Integrity in Cryptococcus neoformans Eukaryot. Cell, May 1, 2007; 6(5): 855 - 867. [Abstract] [Full Text] [PDF]

				E. Ragni, A. Coluccio, E. Rolli, J. M. Rodriguez-Pena, G. Colasante, J. Arroyo, A. M. Neiman, and L. Popolo GAS2 and GAS4, a Pair of Developmentally Regulated Genes Required for Spore Wall Assembly in Saccharomyces cerevisiae Eukaryot. Cell, February 1, 2007; 6(2): 302 - 316. [Abstract] [Full Text] [PDF]

				G. Lesage and H. Bussey Cell Wall Assembly in Saccharomyces cerevisiae Microbiol. Mol. Biol. Rev., June 1, 2006; 70(2): 317 - 343. [Abstract] [Full Text] [PDF]

				A. M. Neiman Ascospore Formation in the Yeast Saccharomyces cerevisiae Microbiol. Mol. Biol. Rev., December 1, 2005; 69(4): 565 - 584. [Abstract] [Full Text] [PDF]

				A. Coluccio, E. Bogengruber, M. N. Conrad, M. E. Dresser, P. Briza, and A. M. Neiman Morphogenetic Pathway of Spore Wall Assembly in Saccharomyces cerevisiae Eukaryot. Cell, December 1, 2004; 3(6): 1464 - 1475. [Abstract] [Full Text] [PDF]

				A. Duran and C. Nombela Fungal cell wall biogenesis: building a dynamic interface with the environment Microbiology, October 1, 2004; 150(10): 3099 - 3103. [Full Text] [PDF]