Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regions
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.11646/phytotaxa.470.4.1 http://hdl.handle.net/11449/206830 |
Resumo: | In the uppermost millimeters of soils is commonly found a thin layer of cryptobiotic organisms, including cyanobacteria, microalgae, lichens, mosses, fungi, bacteria and archaea. These communities are called Biological Soil Crusts (BSCs) or biocrusts and perform important ecological functions, mainly attributed to their capacity of providing soil stability and incorporate nutrients through nitrogen and carbon fixation. Among all the organisms found in the biocrusts, the filamentous cyanobacteria Microcoleus vaginatus and M. steenstrupii are the best studied soil colonizers. The genus Microcoleus is considered complex and has been showing close relation with some species of Phormidium. The poor understanding about these two genera is a limit to the description of the real composition of biocrusts and can generate underestimations in the diversity community and the use of wrong organisms in applied projects (e.g. environmental restoration). This work studied eight cyanobacterial populations from Brazilian BSCs sampled in the Caatinga biome. The populations presented Microcoleus-like and Phormidium-like morphologies, but the phylogenetic analyses based on 16S rRNA gene sequences showed that they represent three new genera and six new species of filamentous cyanobacteria associated to the cryptic genera, they are Pycnacronema caatingensis sp. nov., Pycnacronema edaphica sp. nov., Gracilinea arenicola gen. et sp. nov., Marmoreocelis xerophila gen. et sp. nov., Konicacronema caatinguensis gen. et sp. nov. and Trichocoleus caatingensis sp. nov. The generic name and specific epithets of the new taxa are proposed according to the provisions of the International Code of Nomenclature of algae, fungi, and plants. |
id |
UNSP_81408ee391becc135208902eef2d3862 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/206830 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regionsIn the uppermost millimeters of soils is commonly found a thin layer of cryptobiotic organisms, including cyanobacteria, microalgae, lichens, mosses, fungi, bacteria and archaea. These communities are called Biological Soil Crusts (BSCs) or biocrusts and perform important ecological functions, mainly attributed to their capacity of providing soil stability and incorporate nutrients through nitrogen and carbon fixation. Among all the organisms found in the biocrusts, the filamentous cyanobacteria Microcoleus vaginatus and M. steenstrupii are the best studied soil colonizers. The genus Microcoleus is considered complex and has been showing close relation with some species of Phormidium. The poor understanding about these two genera is a limit to the description of the real composition of biocrusts and can generate underestimations in the diversity community and the use of wrong organisms in applied projects (e.g. environmental restoration). This work studied eight cyanobacterial populations from Brazilian BSCs sampled in the Caatinga biome. The populations presented Microcoleus-like and Phormidium-like morphologies, but the phylogenetic analyses based on 16S rRNA gene sequences showed that they represent three new genera and six new species of filamentous cyanobacteria associated to the cryptic genera, they are Pycnacronema caatingensis sp. nov., Pycnacronema edaphica sp. nov., Gracilinea arenicola gen. et sp. nov., Marmoreocelis xerophila gen. et sp. nov., Konicacronema caatinguensis gen. et sp. nov. and Trichocoleus caatingensis sp. nov. The generic name and specific epithets of the new taxa are proposed according to the provisions of the International Code of Nomenclature of algae, fungi, and plants.Zoology and Botany Department IBILCE/UNESP São Paulo State UniversityZoology and Botany Department IBILCE/UNESP São Paulo State UniversityUniversidade Estadual Paulista (Unesp)Lim, Náthali Maria MacHado De [UNESP]Branco, Luis H. Z. [UNESP]2021-06-25T10:44:32Z2021-06-25T10:44:32Z2020-11-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article263-281http://dx.doi.org/10.11646/phytotaxa.470.4.1Phytotaxa, v. 470, n. 4, p. 263-281, 2020.1179-31631179-3155http://hdl.handle.net/11449/20683010.11646/phytotaxa.470.4.12-s2.0-85096052428Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhytotaxainfo:eu-repo/semantics/openAccess2021-10-23T15:01:32Zoai:repositorio.unesp.br:11449/206830Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T15:01:32Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regions |
title |
Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regions |
spellingShingle |
Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regions Lim, Náthali Maria MacHado De [UNESP] |
title_short |
Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regions |
title_full |
Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regions |
title_fullStr |
Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regions |
title_full_unstemmed |
Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regions |
title_sort |
Biological soil crusts: New genera and species of Cyanobacteria from Brazilian semi-Arid regions |
author |
Lim, Náthali Maria MacHado De [UNESP] |
author_facet |
Lim, Náthali Maria MacHado De [UNESP] Branco, Luis H. Z. [UNESP] |
author_role |
author |
author2 |
Branco, Luis H. Z. [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Lim, Náthali Maria MacHado De [UNESP] Branco, Luis H. Z. [UNESP] |
description |
In the uppermost millimeters of soils is commonly found a thin layer of cryptobiotic organisms, including cyanobacteria, microalgae, lichens, mosses, fungi, bacteria and archaea. These communities are called Biological Soil Crusts (BSCs) or biocrusts and perform important ecological functions, mainly attributed to their capacity of providing soil stability and incorporate nutrients through nitrogen and carbon fixation. Among all the organisms found in the biocrusts, the filamentous cyanobacteria Microcoleus vaginatus and M. steenstrupii are the best studied soil colonizers. The genus Microcoleus is considered complex and has been showing close relation with some species of Phormidium. The poor understanding about these two genera is a limit to the description of the real composition of biocrusts and can generate underestimations in the diversity community and the use of wrong organisms in applied projects (e.g. environmental restoration). This work studied eight cyanobacterial populations from Brazilian BSCs sampled in the Caatinga biome. The populations presented Microcoleus-like and Phormidium-like morphologies, but the phylogenetic analyses based on 16S rRNA gene sequences showed that they represent three new genera and six new species of filamentous cyanobacteria associated to the cryptic genera, they are Pycnacronema caatingensis sp. nov., Pycnacronema edaphica sp. nov., Gracilinea arenicola gen. et sp. nov., Marmoreocelis xerophila gen. et sp. nov., Konicacronema caatinguensis gen. et sp. nov. and Trichocoleus caatingensis sp. nov. The generic name and specific epithets of the new taxa are proposed according to the provisions of the International Code of Nomenclature of algae, fungi, and plants. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-11-09 2021-06-25T10:44:32Z 2021-06-25T10:44:32Z |
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://dx.doi.org/10.11646/phytotaxa.470.4.1 Phytotaxa, v. 470, n. 4, p. 263-281, 2020. 1179-3163 1179-3155 http://hdl.handle.net/11449/206830 10.11646/phytotaxa.470.4.1 2-s2.0-85096052428 |
url |
http://dx.doi.org/10.11646/phytotaxa.470.4.1 http://hdl.handle.net/11449/206830 |
identifier_str_mv |
Phytotaxa, v. 470, n. 4, p. 263-281, 2020. 1179-3163 1179-3155 10.11646/phytotaxa.470.4.1 2-s2.0-85096052428 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Phytotaxa |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
263-281 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803047189182676992 |