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Linkage group-chromosome correlations in Sordaria macrospora: Chromosome identification by three dimensional reconstruction of their synaptonemal complex

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Summary

Reconstruction of serially sectioned zygotene and pachytene nuclei has allowed, by measuring the lengths of synaptonemal complexes, an assignment of the 7 linkage (LG) groups to the 7 chromosomes in the fungus Sordaria macrospora. The 7 LG have been established using 19 mutants showing low second division segregation frequencies. Eight chromosomal rearrangements mapped on the 7 LG were used to identify the chromosomes involved. The following one to one assignment of the 7 LG to specific chromosomes was obtained: LG a: chromosome (chr) 1, LG b: chr5, LG c: chr6, LG d: chr7, LG e: chr4, LG f: chr3 and LG g: chr2 (the chromosome carrying the nucleolus organizer region).

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Abbreviations

LG:

linkage group

SC:

synaptonemal complex

SDS:

second division segregation

NOR:

nucleolus organizer region

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Authors and Affiliations

  1. Laboratoire de Génétique, Bât. 400, Université Paris-Sud, Centre d'Orsay, F-91405, Orsay Cedex, France

    D. Zickler, G. Leblon, V. Haedens, A. Collard & P. Thuriaux

Authors
  1. D. Zickler
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  2. G. Leblon
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  3. V. Haedens
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  4. A. Collard
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  5. P. Thuriaux
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Zickler, D., Leblon, G., Haedens, V. et al. Linkage group-chromosome correlations in Sordaria macrospora: Chromosome identification by three dimensional reconstruction of their synaptonemal complex. Curr Genet 8, 57–67 (1984). https://doi.org/10.1007/BF00405433

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  • DOI: https://doi.org/10.1007/BF00405433

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