Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/25743 https://doi.org/Morales E.A., Wetzel C.E., Novais M.H., Buczkó K., Morais M.M. & Ector L. (2019). Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and description of a new Nanofrustulum species. Plant Ecology and Evolution 152:262-284. https://doi.org/10.5091/plecevo.2019.1604 https://doi.org/10.5091/plecevo.2019.1604 |
Resumo: | Background and aims – As a result of the description of many new species, reanalyses of type material, and information becoming available on valve morphogenesis in small araphid diatoms lacking a rimoportulae, the existing classification scheme at the genus level needs revision. Because morphological information has increased manyfold since the system provided by Williams & Round (1987), it may now be possible to find distinguishing characters in order to produce a more stable and useful framework, encompassing a morphogenetic perspective, which could then guide the placement of newly discovered taxa. This new framework could also be used to help assess the molecular information generated for the group, based on which many new genera are being erected, but perhaps without proper pondering of morphological data. Methods – A thorough review was made of available published information on the ultrastructure of smallcelled araphid diatoms lacking rimoportulae. In addition, image databases were searched, and new light and scanning electron microscopical observations made of some hitherto undescribed species. Key results and conclusions – We provide a table of putative distinguishing features for nine genera (Nanofrustulum, Opephora, Pseudostaurosira, Pseudostaurosiropsis, Punctastriata, Sarcophagodes, Stauroforma, Staurosira and Staurosirella), together with a discussion on their value for discriminating these small diatoms using a morphogenetic perspective. Based on our findings, we amend the genus Pseudostaurosira, establishing wide and short vimines as its most characteristic feature. We use our system in describing a new species from Bolivia, which we place in Nanofrustulum based on its quasifract copulae, the distinguishing trait of the genus. The new species is distinguished from its congeners by its heteropolar valves, apical pore field features, and the multiseriate areolae. We also examine the three genera Popovskayella, Gedaniella, and Serratifera, the latter two recently erected based on molecular information. Since none of these latter genera pass the morphogenetic evaluation we think is essential, we place them in synonymy with other genera and provide the consequent nomenclatural changes. Finally, we make several new combinations in Nanofrustulum, Pseudostaurosira, Sarcophagodes and Staurosirella. |
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Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum speciesAraphidsBolivian AltiplanoFragilariaceaemolecular phylogeniesPantocseksystematicstype materialBackground and aims – As a result of the description of many new species, reanalyses of type material, and information becoming available on valve morphogenesis in small araphid diatoms lacking a rimoportulae, the existing classification scheme at the genus level needs revision. Because morphological information has increased manyfold since the system provided by Williams & Round (1987), it may now be possible to find distinguishing characters in order to produce a more stable and useful framework, encompassing a morphogenetic perspective, which could then guide the placement of newly discovered taxa. This new framework could also be used to help assess the molecular information generated for the group, based on which many new genera are being erected, but perhaps without proper pondering of morphological data. Methods – A thorough review was made of available published information on the ultrastructure of smallcelled araphid diatoms lacking rimoportulae. In addition, image databases were searched, and new light and scanning electron microscopical observations made of some hitherto undescribed species. Key results and conclusions – We provide a table of putative distinguishing features for nine genera (Nanofrustulum, Opephora, Pseudostaurosira, Pseudostaurosiropsis, Punctastriata, Sarcophagodes, Stauroforma, Staurosira and Staurosirella), together with a discussion on their value for discriminating these small diatoms using a morphogenetic perspective. Based on our findings, we amend the genus Pseudostaurosira, establishing wide and short vimines as its most characteristic feature. We use our system in describing a new species from Bolivia, which we place in Nanofrustulum based on its quasifract copulae, the distinguishing trait of the genus. The new species is distinguished from its congeners by its heteropolar valves, apical pore field features, and the multiseriate areolae. We also examine the three genera Popovskayella, Gedaniella, and Serratifera, the latter two recently erected based on molecular information. Since none of these latter genera pass the morphogenetic evaluation we think is essential, we place them in synonymy with other genera and provide the consequent nomenclatural changes. Finally, we make several new combinations in Nanofrustulum, Pseudostaurosira, Sarcophagodes and Staurosirella.Funding for this research was partly provided in the framework of the DIATOMS project (LIST - Luxembourg Institute of Science and Technology). This work was also co-funded by the European Union through the European Regional Development Fund, framed in COMPETE 2020 (Operational Programme Competitiveness and Internationalization), through the ICT project (UID/GEO/04683/2013) with reference POCI01-0145-FEDER-007690 and the Alentejo Observation and Prediction Systems - ALOP project (ALT20-03-0145-FEDER-000004) and the Agencia Portuguesa do Ambiente, APA000004DFIN.AALP/2017 integrated within the Operational Program for Sustainability and Efficiency in the Use of Resources 2014-20, POSEUR-03-2013-FC-000001.Meise Botanic Garden and Royal Botanical Society of Belgium2019-08-09T09:42:38Z2019-08-092019-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/25743https://doi.org/Morales E.A., Wetzel C.E., Novais M.H., Buczkó K., Morais M.M. & Ector L. (2019). Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and description of a new Nanofrustulum species. Plant Ecology and Evolution 152:262-284. https://doi.org/10.5091/plecevo.2019.1604http://hdl.handle.net/10174/25743https://doi.org/10.5091/plecevo.2019.1604engmorales@uevora.ptwetzel.cew@gmail.comhnovais@uevora.ptkrisztina.buczko@gmail.commmorais@uevora.ptluc.ector@list.luMorales, Eduardo A.Wetzel, Carlos E.Novais, Maria HelenaBuczkó, KrisztinaMorais, Maria ManuelaEctor, Lucinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:19:52Zoai:dspace.uevora.pt:10174/25743Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:16:08.926336Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species |
title |
Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species |
spellingShingle |
Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species Morales, Eduardo A. Araphids Bolivian Altiplano Fragilariaceae molecular phylogenies Pantocsek systematics type material |
title_short |
Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species |
title_full |
Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species |
title_fullStr |
Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species |
title_full_unstemmed |
Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species |
title_sort |
Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species |
author |
Morales, Eduardo A. |
author_facet |
Morales, Eduardo A. Wetzel, Carlos E. Novais, Maria Helena Buczkó, Krisztina Morais, Maria Manuela Ector, Luc |
author_role |
author |
author2 |
Wetzel, Carlos E. Novais, Maria Helena Buczkó, Krisztina Morais, Maria Manuela Ector, Luc |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Morales, Eduardo A. Wetzel, Carlos E. Novais, Maria Helena Buczkó, Krisztina Morais, Maria Manuela Ector, Luc |
dc.subject.por.fl_str_mv |
Araphids Bolivian Altiplano Fragilariaceae molecular phylogenies Pantocsek systematics type material |
topic |
Araphids Bolivian Altiplano Fragilariaceae molecular phylogenies Pantocsek systematics type material |
description |
Background and aims – As a result of the description of many new species, reanalyses of type material, and information becoming available on valve morphogenesis in small araphid diatoms lacking a rimoportulae, the existing classification scheme at the genus level needs revision. Because morphological information has increased manyfold since the system provided by Williams & Round (1987), it may now be possible to find distinguishing characters in order to produce a more stable and useful framework, encompassing a morphogenetic perspective, which could then guide the placement of newly discovered taxa. This new framework could also be used to help assess the molecular information generated for the group, based on which many new genera are being erected, but perhaps without proper pondering of morphological data. Methods – A thorough review was made of available published information on the ultrastructure of smallcelled araphid diatoms lacking rimoportulae. In addition, image databases were searched, and new light and scanning electron microscopical observations made of some hitherto undescribed species. Key results and conclusions – We provide a table of putative distinguishing features for nine genera (Nanofrustulum, Opephora, Pseudostaurosira, Pseudostaurosiropsis, Punctastriata, Sarcophagodes, Stauroforma, Staurosira and Staurosirella), together with a discussion on their value for discriminating these small diatoms using a morphogenetic perspective. Based on our findings, we amend the genus Pseudostaurosira, establishing wide and short vimines as its most characteristic feature. We use our system in describing a new species from Bolivia, which we place in Nanofrustulum based on its quasifract copulae, the distinguishing trait of the genus. The new species is distinguished from its congeners by its heteropolar valves, apical pore field features, and the multiseriate areolae. We also examine the three genera Popovskayella, Gedaniella, and Serratifera, the latter two recently erected based on molecular information. Since none of these latter genera pass the morphogenetic evaluation we think is essential, we place them in synonymy with other genera and provide the consequent nomenclatural changes. Finally, we make several new combinations in Nanofrustulum, Pseudostaurosira, Sarcophagodes and Staurosirella. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-08-09T09:42:38Z 2019-08-09 2019-07-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/25743 https://doi.org/Morales E.A., Wetzel C.E., Novais M.H., Buczkó K., Morais M.M. & Ector L. (2019). Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and description of a new Nanofrustulum species. Plant Ecology and Evolution 152:262-284. https://doi.org/10.5091/plecevo.2019.1604 http://hdl.handle.net/10174/25743 https://doi.org/10.5091/plecevo.2019.1604 |
url |
http://hdl.handle.net/10174/25743 https://doi.org/Morales E.A., Wetzel C.E., Novais M.H., Buczkó K., Morais M.M. & Ector L. (2019). Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and description of a new Nanofrustulum species. Plant Ecology and Evolution 152:262-284. https://doi.org/10.5091/plecevo.2019.1604 https://doi.org/10.5091/plecevo.2019.1604 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
morales@uevora.pt wetzel.cew@gmail.com hnovais@uevora.pt krisztina.buczko@gmail.com mmorais@uevora.pt luc.ector@list.lu |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Meise Botanic Garden and Royal Botanical Society of Belgium |
publisher.none.fl_str_mv |
Meise Botanic Garden and Royal Botanical Society of Belgium |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136643436773376 |