, 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


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 

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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

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