, Volume 104, Issue 3, pp 137–141 | Cite as

Prevalence of airborne Aspergillus flavus in Khartoum (Sudan) Airspora with reference to dusty weather and inoculum survival in simulated summer conditions

  • Mahgoub H. Abdalla


Khartoum air was scanned for airborne Aspergillus flavus for 12 months using the horizontal gravitational settling method. Frequency of occurrence was related to total fungal catch and dusty weather. The Aspergilli were prevalent (68% of total isolated/plate/month) and A. flavus constituted 31% of the total Aspergilli. In June (hot, dry & dusty) Aspergilli constituted 79% of the total isolates, whilst A. flavus represented 30% from amongst the other Aspergilli. A. flavus, A. niger, A. nidulans (conidial & ascosporic states), A. terreus, Eurotium amstelodami and A. fumigatus, in descending order of prevalence were isolated in June. Other pathogenic or potentially pathogenic forms, isolated, were Cladosporium, Curvularia and Penicillium. Amongst winter isolations A. flavus was sporadic to absent in occurrence.

A. flavus spore inocula that underwent hourly intermitted exposure to 45 °C, showed a decrease in spore germinability as well as reduced germ length.


Aspergillus Settling Penicillium Sudan Summer Condition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Abdalla MH. Storage moulds of dry-stored barley grain. Ph.D. Thesis submitted to the University of Nottingham, U.K., 1967.Google Scholar
  2. 2.
    Abdalla MH. Mycoflora of groundnut kernels from the Sudan. Trans Brit mycol Soc 1974; 63:353–9.Google Scholar
  3. 3.
    Abdalla MH, El Hag A. Studies on irrigated sorghum rhizosphere and non-rhizosphere mycoflora. Sudan Agric J 1974; 9:38–47.Google Scholar
  4. 4.
    Abdel Rahim AM, Baghdadi AM, Abdalla MH. Studies on the fungus flora in the rhizosphere of sugar cane plants. Mycopathol 1983; 81:183–6.Google Scholar
  5. 5.
    Boltyanskaya EV. Dynamics of B-1 aflatoxin and Aspergillus flavus spore formation on rye and wheat grain. Prikl Biokhim Mikrobiol 1979; 15:682–5. (Biol. Abstr. 70 (4), No. 27124, 1980).Google Scholar
  6. 6.
    Cochrane VW. Physiology of fungi. New York & London: Wiley, Chapman & Hall, 1958.Google Scholar
  7. 7.
    Cooney DG, Emerson R. Thermophilic fungi, an account of their biology, activity and classification. San Francisco & London: W. H. Freeman & Company, 1964.Google Scholar
  8. 8.
    Edmonds RL (ed). Aerobiology: The ecological systems approach. Stroudsburg, Pennsylvania, Dowden, Hutchinson & Ross, Inc. 1979.Google Scholar
  9. 9.
    El Amin EN, Abdalla MH. Survey of soil fungi from the Sudan Gezira. Mycopathol 1980; 71:131–6.Google Scholar
  10. 10.
    El Amin EN, Abdalla MH. Survival of Curvularia lunata var. aeria in soil. Mycopathol 1980; 71:137–40.Google Scholar
  11. 11.
    Griffin DM. Soil physical factors and the ecology of soil fungi. III. Activity of fungi in relatively dry soils. Trans Brit mycol Soc 1963; 46:373–7.Google Scholar
  12. 12.
    Holtmeyer MG, Wallin JR. Identification of aflatoxinproducing atmospheric isolates of Aspergillus flavus. Phytopathol 1980; 70:325–7.Google Scholar
  13. 13.
    Mahgoub ES. Maduromycetoma caused by Aspergillus nidulans. J trop Med Hyg 1971; 74:60–1.Google Scholar
  14. 14.
    Mahgoub ES. Can Aspergillus flavus cause maduromycetoma? Bulletin de la Societe de Pathologie Exotique 1973; 66:390–5.Google Scholar
  15. 15.
    Mahgoub ES. Mycetomas caused by Curvularia lunata, Madurella grisea, A. nidulans and Nocardia brasiliensis in Sudan. Sabouraudia 1973; 11:179–82.Google Scholar
  16. 16.
    Mahgoub ES, El Hassan AM. Pulmonary aspergillosis caused by Aspergillus flavus. Thorax 1972; 27:33–7.Google Scholar
  17. 17.
    Menzies JC. Survival of microbial plant pathogens in soil. Bot Rev 1963; 29:79–122.Google Scholar
  18. 18.
    Milosev B, Mahgoub ES, Abdel A'al O, El Hassan AM. Primary aspergilloma of paranasal sinuses in the Sudan: A review of seventeen cases. Brit J Surg 1969; 56:132–7.Google Scholar
  19. 19.
    Moat AG. Microbial physiology. New York: John Wiley & Sons, 1979:459–62.Google Scholar
  20. 20.
    Musa MM. Seasonal variations in the soil microflora and microbiological activity of the Sudan Gezira soil. African Soils 1971; 16:81–90.Google Scholar
  21. 21.
    Musa MM. Effect of irrigation and cropping on the microbiological activity of the Sudan Gezira soil. Acta Agronomica Scientiarum Hungariae 1975; 24:213–9.Google Scholar
  22. 22.
    Nour MA. A preliminary survey of fungi in some Sudan soils. Trans Brit mycol Soc 1956; 39:357–60.Google Scholar
  23. 23.
    Padhye AA. Fungi pathogenic to man and animals. In: Laskin AI & Lechevalier HA, eds. Handbook of microbiology. 2nd ed., vol II. Florida: CRC Press, Inc., 1973:319–40.Google Scholar
  24. 24.
    Raynor GS. Sampling techniques in aerobiology. In: Edmonds RL, Ed. Aerobiology: The ecological systems approach. Strourdsburg, PA: Dowden, Hutchinson & Ross, Inc., 1979:151–72.Google Scholar
  25. 25.
    Wogan GN, ed. Mycotoxins in foodstuffs. Cambridge, MA: M.I.T. Press, 1965.Google Scholar

Copyright information

© Kluwer Academic Publishers 1988

Authors and Affiliations

  • Mahgoub H. Abdalla
    • 1
  1. 1.OmdurmanSudan

Personalised recommendations