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Light and Transmission Electron Microscopic Studies on Conidiomata Developmental Morphology in Pestaloiopsis rhododendri


Affiliations
1 Centre for Advanced Studies in Botany, Univesity of Madras, Guindy Campus, Chennai: 600 025, Tamil Nadu, India
 

Investigations on the development of conidiomata in Pestalotiopsis rhododendri (Saccardo) Guba were done by using light and Transmission electron microscopes. Light microscopic studies showed the presence of non-ostiolate, pycnidial conidiomata in culture. Acervular conidiomata are produced normally by species of Pestalotiopsis on leaves. The other interesting observation during the study was the ultrastructure of the conidial wall in the coloured cells as well as the basal and apical hyaline cells with the appendages. Pestalotiopsis rhododendri resembles P. uvicola in the development of conidiomata. The first time report of the various stages of development of conidiomata in Pestalotiopsis rhododendri will be useful in fungal systematic studies.

Keywords

Acervular Conidiomata, Coelomycetes, Conidium Ontogeny, Fungi, Pycnidial Conidiomata, Ultrastructure
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  • Archer WA (1926) Morphological characters of some Sphaeropsidales in culture. Ann Mycol. 24, 1-84.

  • Baxter AP (1981) A study of the morphology and taxonomy of certain South African species of Colletotrichum corda. M.Sc. Thesis, University of Pretoria, Pretoria, South Africa.

  • Baxter AP, Van Der Westhuizen GCA and Eicker A (1985) A review of literature on the taxonomy, morphology and biology of the fungal genus Colletotrichum. Phytophylactica. 17, 15-18.

  • Campbell R (1968) An electron microscope study of spore structure and development in Alternaria brassicicola. J. Gen. Microbiol. 54, 381-392.

  • conidiomata in Pestalotiopss uvicola with a note on the ultrastructure of the conidia and conidiogenous cell. J. Mycol Pl. Pathol. 33 (2), 204-211.

  • Griffiths DA and Swart HJ (1974a) Conidial structure in two species of Pestalotiopss. Trans Br Mycol Soc. 62(2), 295-304.

  • Griffiths DA and Swart HJ (1974b) Conidial structure in Pestalotia pezizoides. Trans Br Mycol Soc. 63(1), 169-173.

  • Masilamani S and Muthumary J (1995) Pycnidium ontogeny in Coleophoma cylindrospora. Mycol Res. 99(6), 693-969.

  • Masilamani S and Muthumary J (1994) Development of Conidiomata in Ciliochorella mangiferae (Coelomycetes) Mycol Res. 98(8), 857-861.

  • Masilamani S and Muthumary J (1996) Development of conidiomata in Botryodiplodia theobromae Mycol Res. 100(11), 1383-1387.

  • Murugan M and Muthumary J (2001) Developmental morphology and ultrastructure of Pestalotiopsis maculans. Mycotaxon. 79, 55 - 465.

  • Murugan M and Muthumary J (2003) Studies on developmental morphology of the

  • Nag Raj TR (1981) Coelomycete Systematics. In Biology of conidial Fungi I (ed. G.T. Cole and B. Kendrick). Academic Press. New York. Nag Raj TR (1993) Coelomycetous anamorphs with appendage - bearing conidia. Mycologue publications 331 Daleview PI. Wateloo, Ontario, Canada N2L 5M5. pp. 43-79.

  • Punithalingam E (1979) Graminicolous Ascochyta species. Commonwealth Mycological Institute. Mycol. pp. 142.

  • Riddell RB (1950) Permanent stained mycological preparations obtained by slide cultures. Mycologia. 42, 265-270.

  • Subramanian CV and Reddy KRC (1974) The genus Discosia I. Taxonomy. Kavaka 2, 57-89.

  • Sutton BC (1961) Coelomycetes. I Mycol. pp. 80, 1-16.

  • Sutton BC (1969) Forest microfungi III. The heterogenecity of Pestalotia de Not. Section Sexloculatae Klebahn sensu Guba. Can J Bot. 48, 2083-2094.

  • Sutton BC and Sandhu DK (1969) Electron Microscopy of conidium development and secession in Cryptosporiopsis sp., Phoma fumosa, Melanconium bicolor and M. apiocarpum. Can J Bot. 47, 745-749.


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  • Light and Transmission Electron Microscopic Studies on Conidiomata Developmental Morphology in Pestaloiopsis rhododendri

Abstract Views: 350  |  PDF Views: 77

Authors

M. Murugan
Centre for Advanced Studies in Botany, Univesity of Madras, Guindy Campus, Chennai: 600 025, Tamil Nadu, India
V. Gangadevi
Centre for Advanced Studies in Botany, Univesity of Madras, Guindy Campus, Chennai: 600 025, Tamil Nadu, India
J. Muthumary
Centre for Advanced Studies in Botany, Univesity of Madras, Guindy Campus, Chennai: 600 025, Tamil Nadu, India

Abstract


Investigations on the development of conidiomata in Pestalotiopsis rhododendri (Saccardo) Guba were done by using light and Transmission electron microscopes. Light microscopic studies showed the presence of non-ostiolate, pycnidial conidiomata in culture. Acervular conidiomata are produced normally by species of Pestalotiopsis on leaves. The other interesting observation during the study was the ultrastructure of the conidial wall in the coloured cells as well as the basal and apical hyaline cells with the appendages. Pestalotiopsis rhododendri resembles P. uvicola in the development of conidiomata. The first time report of the various stages of development of conidiomata in Pestalotiopsis rhododendri will be useful in fungal systematic studies.

Keywords


Acervular Conidiomata, Coelomycetes, Conidium Ontogeny, Fungi, Pycnidial Conidiomata, Ultrastructure

References





DOI: https://doi.org/10.17485/ijst%2F2007%2Fv1i2%2F29210