Type of Publication: | Journal article |
URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-42341 |
Author: | Miranda, Kildare; Rodrigues, Claudia O.; Hentschel, Joachim; Vercesi, Anibal; Plattner, Helmut; Souza, Wanderley de; Docampo, Roberto |
Year of publication: | 2004 |
Published in: | Microscopy and Microanalysis ; 10 (2004), 05. - pp. 647-655. - ISSN 1431-9276. - eISSN 1435-8115 |
Pubmed ID: | 15525437 |
DOI (citable link): | https://dx.doi.org/10.1017/S1431927604040887 |
Summary: |
Acidocalcisomes are acidic calcium storage compartments described initially in trypanosomatid and apicomplexan parasites, and recently found in other unicellular eukaryotes. The aim of this study was to identify the presence of acidocalcisomes in the plant trypanosomatid Phytomonas françai. Electron-dense organelles of P. françai were shown to contain large amounts of oxygen, sodium, magnesium, phosphorus, potassium, calcium, iron, and zinc as determined by X-ray microanalysis, either in situ or when purified using iodixanol gradient centrifugation or by elemental mapping. The presence of iron is not common in other acidocalcisomes. In situ, but not when purified, these organelles showed an elongated shape differing from previously described acidocalcisomes. However, these organelles also possessed a vacuolar H+- pyrophosphatase (V-H+-PPase) as determined by biochemical methods and by immunofluorescence microscopy using antibodies against the enzyme. Together, these results suggest that the electron-dense organelles of P. françai are homologous to the acidocalcisomes described in other trypanosomatids, although with distinct morphology and elemental content.
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Subject (DDC): | 570 Biosciences, Biology |
Keywords: | Phytomonas, acidocalcisomes, elemental mapping, pyrophosphatase, calcium, transmission electron microscopy |
Link to License: | Attribution-NonCommercial-NoDerivs 2.0 Generic |
Bibliography of Konstanz: | Yes |
MIRANDA, Kildare, Claudia O. RODRIGUES, Joachim HENTSCHEL, Anibal VERCESI, Helmut PLATTNER, Wanderley de SOUZA, Roberto DOCAMPO, 2004. Acidocalcisomes of Phytomonas françai possess distinct morphological characteristics and contain iron. In: Microscopy and Microanalysis. 10(05), pp. 647-655. ISSN 1431-9276. eISSN 1435-8115. Available under: doi: 10.1017/S1431927604040887
@article{Miranda2004Acido-7335, title={Acidocalcisomes of Phytomonas françai possess distinct morphological characteristics and contain iron}, year={2004}, doi={10.1017/S1431927604040887}, number={05}, volume={10}, issn={1431-9276}, journal={Microscopy and Microanalysis}, pages={647--655}, author={Miranda, Kildare and Rodrigues, Claudia O. and Hentschel, Joachim and Vercesi, Anibal and Plattner, Helmut and Souza, Wanderley de and Docampo, Roberto} }
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Acidocalcisomes_of_Phytomonas_francai_possess_distinct_morphological_characteristics_and_contain_iron.pdf | 373 |