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Title

Adaptation of the Tokuyasu method for the ultrastructural study and immunogold labelling of filamentous fungi

AuthorsGriffith, Janice; Peñalva, Miguel Ángel ; Reggiori, Fulvio
Keywordsfilamentous fungi
hyphae
Aspergillus nidulans
cryosectioning
immunogold labelling
Tokuyasu method
Issue DateJun-2011
PublisherOxford University Press
CitationJournal of Electron Microscopy 60(3):211-216(2011)
AbstractThe study of filamentous fungi is fundamental not only to extend their biotechnological applications, but also to develop new drugs to fight pathological species. Morphological analyses are particularly relevant when investigating their development and differentiation. The need to maintain the orientation of hyphae and the presence of a cell wall, which hampers the sample infiltration with cryoprotectants and other reagents necessary to preserve the cell ultrastructure, creates difficulties with the use of electron microscopy (EM). Here, we present an immunoelectron microscopy (IEM) procedure that combines the Tokuyasu protocol adapted to yeast and the flat-embedding technique. While the first method leads to a fine resolution of the ultrastructure of Aspergillus nidulans because of both the cell wall permeabilization and the negative membrane coloration, the second permits us to preserve the spatial distribution of the hypahe of this fungus. The presented data demonstrate the advantages of this combination and the unprecedented potential of this relatively simple and rapid protocol in resolving the morphology of filamentous fungi and performing localization studie
Description6 páginas, 2 figuras -- PAGS nros. 211-216
Publisher version (URL)http://dx.doi.org/10.1093/jmicro/dfr026
URIhttp://hdl.handle.net/10261/51345
DOI10.1093/jmicro/dfr026
ISSN0022-0744
E-ISSN1477-9986
Appears in Collections:(CIB) Artículos
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