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PMID: 2055133 Published · ppublish English Comparative Study Journal Article Research Support, Non-U.S. Gov't

Meiotic chromosome synapsis in a haploid yeast.

Chromosoma ·Vol. 100 ·No. 4 ·1991-05-00 ·Pages 221-8

Loidl J, Nairz K, Klein F

Abstract

An extensive synaptonemal complex (SC) is found at pachytene in whole mount spread preparations of a haploid yeast, Saccharomyces cerevisiae, strain. Whereas unsynapsed axial elements are present only in a few nuclei, in others non-homologous synapsis involves virtually the whole chromosome set. This suggests that homology is not an indispensable precondition for SC formation in yeast but that chromosomes engage in non-homologous synapsis if no homologous partner is available. Recent evidence that in the sporulation deficient yeast mutants rad50 and mer1 axial elements do form but remain unsynapsed in the majority of nuclei is discussed in the light of the above findings.

MeSH Terms
Chromosomes, Fungal/ultrastructure Diploidy Haploidy Meiosis Microscopy, Electron Saccharomyces cerevisiae/genetics,ultrastructure Synaptonemal Complex
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Loidl J
Department of Cytology and Genetics, Institute of Botany, University of Vienna, Austria.
Nairz K
Klein F
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Article Info
Journal
Chromosoma
Abbr.
Chromosoma
ISSN
0009-5915
DOI
10.1007/BF00344155
Published
1991-05-00
Pages
221-8
Language
English
Region
Austria
NLM ID
2985138R
Subset
IM
External Links
PubMed source DOI: 10.1007/BF00344155 View journal details
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