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Mycopathologia et mycologia applicata

, Volume 41, Issue 3–4, pp 237–249 | Cite as

Caracterisation morphologique, chimique et serologique d'un mutant albinos de Neurospora crassa shear et dodge isole de semences de mache (Valerianella olitoria (L.) Poll.)

  • D. Gindrat
  • R. Peduzzi
  • A. Sijak
  • G. Turian
Article

Résumé

Un mutant albinos (sans carotènes) a deNeurospora crassaShear &Dodge a été isolé de semences de mâche (Valerianella olitoria L.) sur le marché à Genève. Son appartenance à l'espècecrassa est démontrée sur les plans morphologique et sexuel, et il est désignéN. crassa al-Chg a. Il se distingue du type sauvage et d'un mutant albinos (al-2 15.300 a) étudié près du lieu de vente des semences, par la température optimum de croissance. Des tests sérologiques (immunoélectrophorèse) et des séparations de protéines sur gel d'acrylamide ont mis en évidence le degré beaucoup plus élevé de corrélation entre les mutants albinos (al-Chg et al-2) et le type sauvage deN. crassa qu'avec celui deN. sitophila. La valeur taxonomique de ces deux techniques est discutée, de même que l'origine éventuelle du mutant isolé.

Abstract

An albino mutant (without carotenes) ofNeurospora crassaShear &Dodge has been isolated from seeds ofValerianella olitoria L. on sale in Geneva, Switzerland. Its taxonomic position was demonstrated morphologically and sexually. It is described asN. crassa al-Chg a. By its optimal growth temperature it differs from the wild type and from an albino mutant (al-2 15.300 a) studied near the selling place of the seeds. Serological tests (immunoelectrophoresis) and separation of proteins on acrylamide gel have made conspicuous the considerably higher degree of relationship existing between thealbino mutants (al-Chg and al-2) and the wild type ofN. crassa than between these mutants and the wild type ofN. sitophila. The taxonomic value of these methods and the possible origin of the isolated mutant are discussed.

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Copyright information

© Dr. W. Junk N. V. 1970

Authors and Affiliations

  • D. Gindrat
    • 1
  • R. Peduzzi
    • 2
  • A. Sijak
    • 1
  • G. Turian
    • 2
  1. 1.Station Fédérale de Recherches AgronomiquesNyonSuisse
  2. 2.Laboratoire de Microbiologie Générale de l'UniversitéGenèveSuisse

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