The nucleus ofSaccharomyces bayanus

  • N. V. Aswathanarayana
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Summary

The extra-vacuolar nucleus is visible in a small percentage of living cells from 72–96 hour wort cultures. The vacuoles show a luminous boundary under dark ground illumination. The details observed in living nuclei could be stained with haematoxylin after fixation in iodine-formaldehyde-acetic acid mixture. The Feulgen-negative nature of the vacuole and the limitation of the Feulgen-positive material to the area bounded by the nuclear membrane would imply that the ‘centrosome’ described by Lindegren and Rafalko (1950) is the real nucleus. The nucleus ofS. bayanus conforms in its structure to those of higher organisms.

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References

  1. 1.
    Aswathanarayana, N. V...Proc. Ind. Acad. Sci., 1956,43 B, 314.Google Scholar
  2. 2.
    —————Proc. Ind. Acad. Sci., 1958,47 B, 225.Google Scholar
  3. 3.
    —— and Subramaniam, M. K...Proc. Ind. Acad. Sci., 1958,47 B,, 263.Google Scholar
  4. 4.
    Baker, R...Cytological Techniques, Methuen & Co., Ltd., London, 1955.Google Scholar
  5. 5.
    Darlington, C. D. and La Cour, L. F.Handling of Chromosomes, George Allen & Unwin, Ltd., London, 1950.Google Scholar
  6. 6.
    Gatenby, J. B. and Cowdry, E. V.Bolles Lee’s Microtomists Vade Mecum, J. & A. Churchill, London, 1928.Google Scholar
  7. 7.
    Hirano, T....J. Ultrastructure Research, 1962,7, 201.CrossRefGoogle Scholar
  8. 8.
    Johansen, D. A....Plant Microtechnique, McGraw-Hill Book Co., Inc., New York, 1940.Google Scholar
  9. 9.
    Lindegren, C. C...The Yeast Cell, Its Genetics and Cytology, Educational Pubrs. Inc., St. Louis, Mo., 1949.Google Scholar
  10. 10.
    —————..Nature, 1962,195, 1225.PubMedCrossRefGoogle Scholar
  11. 11.
    ————— and Rafalko, M. M.Exptl. Cell Research, 1950,1, 169.CrossRefGoogle Scholar
  12. 12.
    ————— and Townsend, G. F.Cytologia, 1954,19, 104.Google Scholar
  13. 13.
    Lindegrew, C. C. Williams, M. A. and McClary, D. O.Antonie van Leeuwenhoek, 1956,22, 1.CrossRefGoogle Scholar
  14. 14.
    McClary, D. O., Bowers, W. D. and Miller, G. R.J. Bact., 1962,83, 276.PubMedCrossRefGoogle Scholar
  15. 15.
    Royan, S...Proc. Ind. Acad. Sci., 1956,44 B, 47.Google Scholar
  16. 16.
    —————..Proc. Ind. Acad. Sci., 1958a,47 B, 31.Google Scholar
  17. 17.
    —————..Ibid., 1958b,48 B, 33.Google Scholar
  18. 18.
    —————..Curr. Sci., 1958c,27, 400.Google Scholar
  19. 19.
    ————— and Subramaniam M. K.,Proc. Ind. Acad. Sci., 1956,43 B, 223.Google Scholar
  20. 20.
    ————— and Subramaniam M. K.,Ibid., 1960,51 B, 205.Google Scholar
  21. 21.
    Subramaniam, M. K... Ibid., 1960,51 B, 66.Google Scholar
  22. 22.
    --, Royan, S., Thyagarajan, T. R., Aswathanarayana, N. V. and Subramanyam, S.Ind. Inst. Sci. Golden Jubilee Res. Vol., 1959, p. 96.Google Scholar
  23. 23.
    Subramanyam, S...J. Ind. Inst. Sci., 1960,42, 85.Google Scholar
  24. 24.
    Yotsuyanagi, Y...Compt. rend. Acad. Sci., 1960,250, 1522.Google Scholar

Copyright information

© Indian Academy of Sciences 1963

Authors and Affiliations

  • N. V. Aswathanarayana
    • 1
  1. 1.Cytogenetics Laboratory, Department of BiochemistryIndian Institute of ScienceBangalore-12
  2. 2.Department of ZoologyCentral CollegeBangalore

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