Advertisement

Mycoscience

, 37:129 | Cite as

Ultrastructure of asci and ascospores of the mangrove ascomyceteDactylospora haliotrepha

  • Doris Wai Ting Au
  • Lilian Lee Ping Vrijmoed
  • Evan Benjamin Gareth Jones
Original Papers

Abstract

Ultrastructure of the marine LoculoascomyceteDactylospora heliotrepha is presented and compared withMarinosphaera mangrovei, Swampomyces armeniacus and other marine species. Ascospores are bi-celled and ridged. The ridges are outgrowths of the outer mesosporial layer and formed later in ascosporogenesis. The exosporial layer fragments to release mucilaginous material present between the spore wall ridges. Asci and pseudoparaphyses are held together by a fibrillar mucilaginous network. The endoascus is thicker than the ectoascus. Comparisons are made of the diameter of ascomata, size of asci and ascospores ofD. heliotrepha collected from mangroves in Hong Kong, Malaysia, the Philippines and Taiwan.

Key Words

bitunicate ascus Dactylospora haliotrepha Loculoascomycetes mangrove fungi mucilage ultrastructure 

Literature cited

  1. Hafellner, J. 1979.Karschia. Revision einer Sammelgattung an der Grenze von lichenisierten und nichtlichenisierten Ascomyceten. Beih. Nova Hedwigia62: 1–248.Google Scholar
  2. Hawksworth, D. H. L. 1994. Discussion 10: Families and genera of uncertain position. In: Ascomycete systematics. Problems and perspectives in the nineties. (ed. by Hawksworth, D. H. L.), pp. 419–421. Plenum Press, New York.Google Scholar
  3. Hyde, K. D. 1986. Frequency of occurrence of lignicolous marine fungi in the tropics. In: The biology of marine fungi, (ed. by Moss, S. T.), pp. 311–322. Cambridge University Press, Cambridge.Google Scholar
  4. Hyde, K. D. and Jones, E. B. G. 1989. Observations on ascospore morphology in marine fungi and their attachment to surfaces. Bot. Mar.32: 205–218.Google Scholar
  5. Hyde, K. D., Jones, E. B. G. and Moss, S. T. 1986. How do fungal spores attach to surface? In: Proceeding 6th international biodeterioration symposium, (ed. by Barry, S., Houghton, D. R., Liewellyn G. C. and O'Rear C. E.), pp. 584–589. CAB International Mycological Institute and The Biodeterioration Society, London.Google Scholar
  6. Jones, E. B. G. 1994. Fungal adhesion. Mycol. Res.98: 961–981.CrossRefGoogle Scholar
  7. Jones, E. B. G. 1995. Ultrastructure and taxonomy of the aquatic ascomycetous order Halosphaeriales. Can. J. Bot.73 (Suppl. 1): 5790–5801.Google Scholar
  8. Jones, E. B. G. and Moss, S. T. 1987. Key and notes on genera of the Halosphaeriaceae examined at the ultrastructural level. Systema Ascomycetum6: 179–200.Google Scholar
  9. Jones, E. B. G., Johnson, R. G. and Moss, S. T. 1986. Taxonomic studies of the Halosphaeriaceae—philosophy and rationale for the selection of characters in the delineation of genera. In: The biology of marine fungi, (ed. by Moss, S. T.), pp. 211–229. Cambridge University Press, Cambridge.Google Scholar
  10. Kohlmeyer, J. 1986. Taxonomic studies of the marine Ascomycotina. In: The biology of marine fungi, (ed. by Moss, S. T.), pp. 199–210. Cambridge University Press, Cambridge.Google Scholar
  11. Kohlmeyer, J. and Kohlmeyer, E. 1965. New marine fungi from mangroves and trees along eroding shore lines. Nova Hedwigia9: 89–104.Google Scholar
  12. Kohlmeyer, J. and Kohlmeyer, E. 1979. Marine mycology: The higher fungi. Academic Press, New York.Google Scholar
  13. Kohlmeyer, J. and Volkmann-Kohlmeyer, B. 1991. Illustrated key to the filamentous higher marine fungi. Bot. Mar.34: 1–61.CrossRefGoogle Scholar
  14. Moss, S. T. 1990. The relevance of scanning electron microscopy in the taxonomy of marine ascomycetes. In: Scanning electron microscopy in taxonomy and functional morphology, (ed. by Clayher, D.), pp. 149–170. Oxford Science Publ., Oxford.Google Scholar
  15. Nakagiri, A. 1993. Intertidal mangrove fungi from Iriomote Island. I. F. O. Res. Commun.6: 24–62.Google Scholar
  16. Read, S. J., Hsieh, S. Y., Jones, E. B. G., Moss, S. T. and Chang, H. S. 1992.Paraliomyces lentiferus, an ultrastructural study of a little known marine ascomycete. Can. J. Bot.70: 2223–2232.Google Scholar
  17. Read, S. J., Moss, S. T. and Jones, E. B. G. 1993. Ultrastructural observations onNimbospora bipolaris (Halosphaeriaceae, Ascomycetes). Phil. Trans. R. Soc. Handbook339: 483–489.Google Scholar
  18. Read, S. J., Moss, S. T. and Jones, E. B. G. 1994. Ultrastructure of asci and ascospore sheath ofMassarina thalassiae (Loculoascomycetes, Ascomycotina). Bot. Mar.37: 547–553.CrossRefGoogle Scholar
  19. Read, S. J., Jones, E. B. G., Moss, S. T. and Hyde, K. D. 1995. Ultrastructure of asci, ascospores of two uncommon mangrove fungi:Swampomyces armeniacus andMarinosphaera mangrovei. Mycol. Res.99: 1465–1471.CrossRefGoogle Scholar
  20. Yusoff, M., Moss, S. T. and Jones, E. B. G. 1994. Ascospore ultrastructure ofPleospora gaudefroyi (Pleosporaceae, Loculoascomycetes, Ascomycotina). Can. J. Bot.72: 1–6.Google Scholar

Copyright information

© The Mycological Society of Japan 1996

Authors and Affiliations

  • Doris Wai Ting Au
    • 1
  • Lilian Lee Ping Vrijmoed
    • 1
  • Evan Benjamin Gareth Jones
    • 2
  1. 1.Department of Biology and ChemistryCity University of Hong KongKowloonHong Kong
  2. 2.School of Biological SciencesUniversity of PortsmouthPortsmouthUK

Personalised recommendations