1887

Abstract

SUMMARY Microscopic studies on four Chainia species have revealed that their vegetative raycelia were characterized by a rapid sclerotization resulting in the formation of broad, closely septate sclerotial hyphae measuring i to 3 m in width. The sclerotia which subsequently formed originated from well-defined sclerotial initials which developed further by growth and division in different planes. A study of the internal structure of the sclerotia by microtomy revealed that they possessed a typical pseudoparenchymatous structure without any internal differentiation into zones.

The sclerotia developed in different ways. In and , the sclerotial initials were intercalary. In they arose laterally on multi-hyphal strands as is characteristic of many fungi. In 33br the sclerotial initials were both intercalary and lateral. In and 33br the substrate growth sometimes formed a stroma-like crust with sclerotia anchored to or embedded in it. Scanning electron microscopy of sclerotia of showed that these structures possessed a characteristic surface architecture. The actinomycete sclerotium is not a simple hyphal aggregation but a definitive morphological entity with characteristic modes of development.

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1974-05-01
2021-10-28
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References

  1. Baldacci E., Locci R. 1966; A tentative arrangement of the genera of Actinomycetales. Giornale di Microbiologia 14:131–139
    [Google Scholar]
  2. Baldacci E., Locci R., Locci J. R. 1966; Production of ‘granules’ by Actinomycetales. Giornale di Microbiologia 14:173–184
    [Google Scholar]
  3. Butler G. M. 1966; Vegetative structures. In The Fungi 2 pp 83–112 Ainsworth G. C., Sussman A. S. Edited by New York and London: Academic Press;
    [Google Scholar]
  4. Gattani M. L. 1957; Production of sclerotic granules by Streptomyces sp. Nature; London: 1801293–1294
    [Google Scholar]
  5. Kalakutskii L. V., Krassilnikov N. A. 1960; The formation of sclerotia by actinomyces and the systematic position of the genus Chainia. Trudy instituta mikrobiologii . Akademiya nauk SSSR 8:45–55 cited from Biological Abstracts 37
    [Google Scholar]
  6. Klieneberger-Nobel E. 1947; The life cycle of sporing Actinomyces as revealed by their structure and septation. Journal of General Microbiology 1:22–32
    [Google Scholar]
  7. Kuznetsov V. D. 1962; A new species of the genus Chainia . Microbiology, USSR 31:435–439
    [Google Scholar]
  8. Nishimura H., Tawara K. 1957; A method for microscopical observation of Streptomyces using agar cylinder culture. Journal of Antibiotics A 10:82
    [Google Scholar]
  9. Purvis M. J., Collier D. C., Walls D. 1964 Laboratory Techniques in Botany London: Butterworths;
    [Google Scholar]
  10. Shirling E. B., Gottlieb D. 1966; Methods for characterisation of Streptomyces species. International Journal of Systematic Bacteriology 16:313–340
    [Google Scholar]
  11. Shirling E. B., Gottlieb D. 1972; Cooperative description of type strains of Streptomyces. V. Additional descriptions. International Journal of Systematic Bacteriology 22:265–394
    [Google Scholar]
  12. Thirumalachar M. J. 1955; Chainia, a new genus of the Actinomycetales. Nature; London: 176934–935
    [Google Scholar]
  13. Thirumalachar M. J., Rahalkar P. W., Deshmukh P. V., Sukapure R. S. 1965; Production of aburamycin by Chainia minutisclerotica, a new species of actinomycetes. Hindustan Antibiotics Bulletin 8:6–9
    [Google Scholar]
  14. Thirumalachar M. J., Sukapure R. S. 1964; Studies on species of the genus Chainia from India. Hindustan Antibiotics Bulletin 6:157–166
    [Google Scholar]
  15. Thirumalachar M. J., Sukapure R. S., Rahalkar P. W., Gopalkrishnan K. S. 1966; Studies on species of the genus Chainia from India. II. Hindustan Antibiotics Bulletin 9:10–15
    [Google Scholar]
  16. Thompson R.E.M., Bisset K. A. 1957; Polysepta: a new genus and suborder of bacteria. Nature; London: 179590–591
    [Google Scholar]
  17. Tulasne R., Vendrely R. 1947; Demonstration of bacterial nuclei with ribonuclease. Nature; London: 160225–226
    [Google Scholar]
  18. Waksman S. A. 1961; Classification, identification and descriptions of genera and species. In The Actino-mycetes 2 p 332 Baltimore: Williams and Wilkins;
    [Google Scholar]
  19. Willetts H. J. 1971; The survival of fungal sclerotia under adverse environmental conditions. Biological Reviews 46:387–407
    [Google Scholar]
  20. Willetts H. J. 1972; The morphogenesis and possible evolutionary origins of fungal sclerotia. Biological Reviews 47:515–536
    [Google Scholar]
  21. Williams S. T., Davies F. L. 1967; Use of a scanning electron microscope for the examination of actinomycetes. Journal of General Microbiology 48:171–177
    [Google Scholar]
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