Scanning electron microscopy of perithecial development in a species of Phyllactinia on oak

1974 ◽  
Vol 52 (10) ◽  
pp. 2175-2179 ◽  
Author(s):  
James L. Harris ◽  
Ivan L. Roth
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Structure ◽  
Pathogenic Fungi ◽  
Plant Pathogenic Fungi ◽  
Fruiting Bodies ◽  
Scanning Electron ◽  
Study Development

A species of Phyllactinia on oak was examined by scanning electron microscopy. The naturally dried fungus was minimally manipulated in preparation for study. Development was followed by examining various stages from initial to mature perithecium. Immature perithecial appendages were found to be less rigid than those which had matured. The sticky apical mucilage droplet on the maturing perithecium was observed, but the penicillate cells that form the droplet were not easily seen. As the appendages dried they lifted the perithecium off the surrounding surface. Some perithecia were found that had overturned and adhered to the hyphae-covered leaf by means of the mucilage droplet. This study has resulted in visualization of Phyllactinia surface structure in more detail than heretofore reported. Other plant pathogenic fungi, especially those producing naturally dry mature fruiting bodies, should be amenable to study by this method.

scholarly journals Scanning electron microscopy of hyphal interaction between Streptomyces griseoviridis and some plant pathogenic fungi

1991 ◽  
Vol 63 (5) ◽  
pp. 435-441
Author(s):  
Eeva Tapio ◽  
Arja Pohto-Lahdenperä
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Pathogenic Fungi ◽  
Pythium Ultimum ◽  
Alternaria Brassicicola ◽  
Plant Pathogenic Fungi ◽  
Turnip Rape ◽  
Phomopsis Sclerotioides ◽  
Streptomyces Griseoviridis ◽  
Scanning Electron

The interaction between Streptomyces griseoviridis and the pathogens Alternaria brassicicola, Botrytis cinerea, Fusarium oxysporum, Mycocentrospora acerina, Rhizoctonia solani and Sclerotinia sclerotiorum was studied by SEM both on autoclaved seeds and living seedlings of turnip rape and carrot and the fungi Phomopsis sclerotioides and Pythium ultimum on cucumber seedlings. The samples were prepared by the standard method for examination by scanning electron microscope. The hyperparasitism of S. griseoviridis was clearly shown. S. griseoviridis tightly wound around Alternaria conidia and Sclerotinia hyphae, eventually disintegrating them. It grew along the hyphae of B. cinerea, P. sclerotioides and M. acerina, dissolving them. The hypha of F. oxysporum seemed to be slightly affected, and its conidia not at all. The hyperparasite grew only loosely on the hypha of R. solani and on the mycelium and oogonia of Pythium which seemed not to sustain much injury.

Examination of Schistosome Cercariae and Schistosomules by Scanning Electron Microscopy

1969 ◽  
Vol 27 ◽  
pp. 50-51
Author(s):  
D. Johnson ◽  
P. Moriearty
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
High Resolution ◽  
Light Microscopy ◽  
Surface Structure ◽  
Extensive Study ◽  
Scanning Microscopy ◽  
Host Parasite ◽  
Conventional Electron Microscopy ◽  
Scanning Electron

Since several species of Schistosoma, or blood fluke, parasitize man, these trematodes have been subjected to extensive study. Light microscopy and conventional electron microscopy have yielded much information about the morphology of the various stages; however, scanning electron microscopy has been little utilized for this purpose. As the figures demonstrate, scanning microscopy is particularly helpful in studying at high resolution characteristics of surface structure, which are important in determining host-parasite relationships.

scholarly journals Microporous structures in natural polymer

2018 ◽  
Vol 44 ◽  
pp. 00014
Author(s):  
Maciej Borowczak ◽  
Stanisław Frąckowiak
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Structure ◽  
Process Parameters ◽  
Natural Polymer ◽  
Butylene Succinate ◽  
Biodegradable Poly ◽  
Solvent Systems ◽  
Scanning Electron

Electrospinning of biodegradable poly (butylene succinate) has been performed from different solvent systems. Alternation of process parameters resulted in respective changes of the surface structure topography which was evaluated by using scanning electron microscopy (SEM).

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