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Salisapiliaceae – a new family of oomycetes from marsh grass litter of southeastern North America

Several filamentous oomycete species of the genus Halophytophthora have recently been described from marine environments, mostly from subtropical and tropical ecosystems. During a survey of oomycetes from leaf litter of Spartina alterniflora in salt marshes of southeastern Georgia, isolates of four...

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Autores principales: Hulvey, J., Telle, S., Nigrelli, L., Lamour, K., Thines, M.
Formato: Texto
Lenguaje:English
Publicado: Nationaal Herbarium Nederland & Centraallbureau voor Schimmelcultures 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3028510/
https://www.ncbi.nlm.nih.gov/pubmed/21339970
http://dx.doi.org/10.3767/003158510X551763
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author Hulvey, J.
Telle, S.
Nigrelli, L.
Lamour, K.
Thines, M.
author_facet Hulvey, J.
Telle, S.
Nigrelli, L.
Lamour, K.
Thines, M.
author_sort Hulvey, J.
collection PubMed
description Several filamentous oomycete species of the genus Halophytophthora have recently been described from marine environments, mostly from subtropical and tropical ecosystems. During a survey of oomycetes from leaf litter of Spartina alterniflora in salt marshes of southeastern Georgia, isolates of four taxa were recovered that bore similarity to some members of Halophytophthora but were highly divergent from isolates of Halophytophthora s.str. based on a combined sequence analysis of two nuclear loci. In phylogenetic analyses, these isolates were placed basal to a monophyletic group comprised of Pythium of the Pythiaceae and the Peronosporaceae. Sequence and morphology of these taxa diverged from the type species Halophytophthora vesicula, which was placed within the Peronosporaceae with maximum support. As a consequence a new family, the Salisapiliaceae, and a new genus, Salisapilia, are described to accommodate the newly discovered species, along with one species previously classified within Halophytophthora. Morphological features that separate these taxa from Halophytophthora are a smaller hyphal diameter, oospore production, lack of vesicle formation during sporulation, and a plug of hyaline material at the sporangial apex that is displaced during zoospore release. Our findings offer a first glance at the presumably much higher diversity of oomycetes in estuarine environments, of which ecological significance requires further exploration.
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spelling pubmed-30285102011-02-18 Salisapiliaceae – a new family of oomycetes from marsh grass litter of southeastern North America Hulvey, J. Telle, S. Nigrelli, L. Lamour, K. Thines, M. Persoonia Research Article Several filamentous oomycete species of the genus Halophytophthora have recently been described from marine environments, mostly from subtropical and tropical ecosystems. During a survey of oomycetes from leaf litter of Spartina alterniflora in salt marshes of southeastern Georgia, isolates of four taxa were recovered that bore similarity to some members of Halophytophthora but were highly divergent from isolates of Halophytophthora s.str. based on a combined sequence analysis of two nuclear loci. In phylogenetic analyses, these isolates were placed basal to a monophyletic group comprised of Pythium of the Pythiaceae and the Peronosporaceae. Sequence and morphology of these taxa diverged from the type species Halophytophthora vesicula, which was placed within the Peronosporaceae with maximum support. As a consequence a new family, the Salisapiliaceae, and a new genus, Salisapilia, are described to accommodate the newly discovered species, along with one species previously classified within Halophytophthora. Morphological features that separate these taxa from Halophytophthora are a smaller hyphal diameter, oospore production, lack of vesicle formation during sporulation, and a plug of hyaline material at the sporangial apex that is displaced during zoospore release. Our findings offer a first glance at the presumably much higher diversity of oomycetes in estuarine environments, of which ecological significance requires further exploration. Nationaal Herbarium Nederland & Centraallbureau voor Schimmelcultures 2010-12-14 2010-12 /pmc/articles/PMC3028510/ /pubmed/21339970 http://dx.doi.org/10.3767/003158510X551763 Text en © 2010 Nationaal Herbarium Nederland & Centraalbureau voor Schimmelcultures 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. (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 Research Article
Hulvey, J.
Telle, S.
Nigrelli, L.
Lamour, K.
Thines, M.
Salisapiliaceae – a new family of oomycetes from marsh grass litter of southeastern North America
title Salisapiliaceae – a new family of oomycetes from marsh grass litter of southeastern North America
title_full Salisapiliaceae – a new family of oomycetes from marsh grass litter of southeastern North America
title_fullStr Salisapiliaceae – a new family of oomycetes from marsh grass litter of southeastern North America
title_full_unstemmed Salisapiliaceae – a new family of oomycetes from marsh grass litter of southeastern North America
title_short Salisapiliaceae – a new family of oomycetes from marsh grass litter of southeastern North America
title_sort salisapiliaceae – a new family of oomycetes from marsh grass litter of southeastern north america
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3028510/
https://www.ncbi.nlm.nih.gov/pubmed/21339970
http://dx.doi.org/10.3767/003158510X551763
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