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Incipient loss of flagella in the genus Geolegnia: the emergence of a new clade within Leptolegnia?

The genus Geolegnia represents a poorly documented group of saprolegnialean oomycetes isolated from soils as free-living organisms. Although it is morphologically similar to the facultative parasitic genus Leptolegnia, Geolegnia presents the uncommon property of having lost a flagellate stage in its...

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Autores principales: Steciow, Mónica M., Lara, Enrique, Pillonel, Amandine, Pelizza, Sebastián A., Lestani, Eduardo A., Rossi, Gustavo C., Belbahri, Lassaad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Mycological Association 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3905935/
https://www.ncbi.nlm.nih.gov/pubmed/24563829
http://dx.doi.org/10.5598/imafungus.2013.04.02.02
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author Steciow, Mónica M.
Lara, Enrique
Pillonel, Amandine
Pelizza, Sebastián A.
Lestani, Eduardo A.
Rossi, Gustavo C.
Belbahri, Lassaad
author_facet Steciow, Mónica M.
Lara, Enrique
Pillonel, Amandine
Pelizza, Sebastián A.
Lestani, Eduardo A.
Rossi, Gustavo C.
Belbahri, Lassaad
author_sort Steciow, Mónica M.
collection PubMed
description The genus Geolegnia represents a poorly documented group of saprolegnialean oomycetes isolated from soils as free-living organisms. Although it is morphologically similar to the facultative parasitic genus Leptolegnia, Geolegnia presents the uncommon property of having lost a flagellate stage in its lifecycle. Based on ITS and large subunit (LSU) rRNA sequence data, we show Geolegnia to be basal to Leptolegnia, and also introduce Geolegnia helicoides sp. nov. Using sequence data of Leptolegnia available in GenBank, supplemented by data derived from culture collections, we show that Geolegnia is nested within Leptolegnia, a genus characterised by its “conventional” biflagellate life cycle. The emergence of Geolegnia is therefore seen as a recent event, and we suggest here an evolutionary context where this loss might have been advantageous. Based on this study, Leptolegnia remains paraphyletic, awaiting the redefinition of genera in this complex.
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spelling pubmed-39059352014-02-21 Incipient loss of flagella in the genus Geolegnia: the emergence of a new clade within Leptolegnia? Steciow, Mónica M. Lara, Enrique Pillonel, Amandine Pelizza, Sebastián A. Lestani, Eduardo A. Rossi, Gustavo C. Belbahri, Lassaad IMA Fungus Article The genus Geolegnia represents a poorly documented group of saprolegnialean oomycetes isolated from soils as free-living organisms. Although it is morphologically similar to the facultative parasitic genus Leptolegnia, Geolegnia presents the uncommon property of having lost a flagellate stage in its lifecycle. Based on ITS and large subunit (LSU) rRNA sequence data, we show Geolegnia to be basal to Leptolegnia, and also introduce Geolegnia helicoides sp. nov. Using sequence data of Leptolegnia available in GenBank, supplemented by data derived from culture collections, we show that Geolegnia is nested within Leptolegnia, a genus characterised by its “conventional” biflagellate life cycle. The emergence of Geolegnia is therefore seen as a recent event, and we suggest here an evolutionary context where this loss might have been advantageous. Based on this study, Leptolegnia remains paraphyletic, awaiting the redefinition of genera in this complex. International Mycological Association 2013-10-25 2013-12 /pmc/articles/PMC3905935/ /pubmed/24563829 http://dx.doi.org/10.5598/imafungus.2013.04.02.02 Text en © 2013 International Mycological Association http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode You are free to share - to copy, distribute and transmit the work, under the following conditions: Attribution: You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Non-commercial: You may not use this work for commercial purposes. No derivative works: You may not alter, transform, or build upon this work. For any reuse or distribution, you must make clear to others the license terms of this work, which can be found at http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode. Any of the above conditions can be waived if you get permission from the copyright holder. Nothing in this license impairs or restricts the author’s moral rights.
spellingShingle Article
Steciow, Mónica M.
Lara, Enrique
Pillonel, Amandine
Pelizza, Sebastián A.
Lestani, Eduardo A.
Rossi, Gustavo C.
Belbahri, Lassaad
Incipient loss of flagella in the genus Geolegnia: the emergence of a new clade within Leptolegnia?
title Incipient loss of flagella in the genus Geolegnia: the emergence of a new clade within Leptolegnia?
title_full Incipient loss of flagella in the genus Geolegnia: the emergence of a new clade within Leptolegnia?
title_fullStr Incipient loss of flagella in the genus Geolegnia: the emergence of a new clade within Leptolegnia?
title_full_unstemmed Incipient loss of flagella in the genus Geolegnia: the emergence of a new clade within Leptolegnia?
title_short Incipient loss of flagella in the genus Geolegnia: the emergence of a new clade within Leptolegnia?
title_sort incipient loss of flagella in the genus geolegnia: the emergence of a new clade within leptolegnia?
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3905935/
https://www.ncbi.nlm.nih.gov/pubmed/24563829
http://dx.doi.org/10.5598/imafungus.2013.04.02.02
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