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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/32452

Title: Biochemical Characterization of a Trypanosomatid Isolated from the Plant Amaranthus retroflexus
Authors: Marín Sánchez, Clotilde
Fernández-Ramos, Carolina
Entrala Torres, Emilio
Quesada, José M.
Sánchez-Moreno, Manuel
Issue Date: 2000
Abstract: A protozoan flagelate has recently been isolated from Amaranthus retroflexus. This plant grows near economically important crops in southeastern Spain, which are known to be parasitized by Phytomonas spp. The present study focuses on the characterization of the energy metabolism of this new isolate. These flagellates utilize glucose efficiently as their primary energy source, although they are unable to completely degrade it. They excrete ethanol, acetate, glycine, and succinate in lower amount, as well as ammonium. The presence of glycosomes was indicated by the early enzymes of the glycolytic pathway, one enzyme of the glycerol pathway (glycerol kinase), and malate dehydrogenase. No evidence of a fully functional citric-acid cycle was found. In the absence of catalase activity, these flagellates showed significant superoxide dismutase activity located in the glycosomal and cytosolic fractions. These trypanosomes, despite being morphologically and metabolically similar to other Phytomonas isolated from the same area, showed significant differences, suggesting that they are phylogenetically different species.
Publisher: Instituto Oswaldo Cruz
Keywords: Amaranthus retroflexus
Energy metabolism
Superoxide dismutase
URI: http://hdl.handle.net/10481/32452
ISSN: 0074-0276
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Marín, C.; et al. Biochemical Characterization of a Trypanosomatid Isolated from the Plant Amaranthus retroflexus. Memórias do Instituto Oswaldo Cruz, 95(5): 641-647 (2000). [http://hdl.handle.net/10481/32452]
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