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Autofluorescence and ultrastructure in the Myxomycete Diachea leucopodia (Physarales)
Cecilia C Carmarán1, Sonia Rosenfeldt, Diana Skigin
1Departamento de Biodiversidad y Biología Experimental, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, C1428EHA, Buenos Aires, Argentina, carmaran@bg.fcen.uba.ar.
Abstract:
Autofluorescence is reported for the first time in Myxomycete fruiting bodies. Ultrastructure of stalked sporangia of Diachea leucopodia (Didymiaceae, Physarales) was studied using scanning and transmission electron microscopy, energy-dispersive X-ray microanalysis, and fluorescence microscopy. External and internal properties of the peridium that surround the spores and capillitium exhibit autofluorescence. The stalk is composed of calcareous granules and energy-dispersive X-ray microanalysis demonstrates that the elemental composition of the peridium, capillitium, and stalk has varying concentrations of calcium.
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