Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats
Cyanobacteria are among the most diverse morphological microorganisms that inhabit a great variety of habitats. Their presence in the Azores, a volcanic archipelago of nine islands in the middle of the North Atlantic Ocean, has already been reported. However, due to the high diversity of cyanobacter...
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MDPI AG
2020-07-01
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| Online Access: | https://www.mdpi.com/1424-2818/12/8/298 |
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| author | Rita Cordeiro Rúben Luz Vitor Vasconcelos Vítor Gonçalves Amélia Fonseca |
| author_facet | Rita Cordeiro Rúben Luz Vitor Vasconcelos Vítor Gonçalves Amélia Fonseca |
| author_sort | Rita Cordeiro |
| collection | DOAJ |
| description | Cyanobacteria are among the most diverse morphological microorganisms that inhabit a great variety of habitats. Their presence in the Azores, a volcanic archipelago of nine islands in the middle of the North Atlantic Ocean, has already been reported. However, due to the high diversity of cyanobacteria habitats, their biodiversity is still understudied, mainly in extreme environments. To address this, a total of 156 cyanobacteria strains from Azores lakes, streams, thermal and terrestrial habitats were isolated. Identification was made based on a polyphasic approach using classical taxonomy (morphological characteristics and environmental data) and phylogeny among 81 strains assessed by maximum likelihood and Bayesian analysis of 16S rDNA partial sequences. The 156 isolates showed a high genera diversity (38) belonging to the orders Chroococcales, Nostocales, Oscillatoriales, and Synechococcales. Eleven new genera for the Azores habitats are here reported, reinforcing that cyanobacteria biodiversity in these islands is still much understudied. Phylogenetic analysis showed 14 clusters associated with these cyanobacteria orders, with evidence for six new genera and valuable information towards <i>Microchaete</i>/<i>Coleospermum</i> taxonomic revision that better reflects species environmental distribution. These results emphasize the need for cyanobacteria taxonomy revisions, through polyphasic studies, mainly in Synechococcales order and in the <i>Microchaete</i>/<i>Coleospermum</i>, <i>Nostoc</i>, and <i>Anabaena</i> genera. |
| first_indexed | 2024-03-10T18:07:27Z |
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| institution | Directory Open Access Journal |
| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-10T18:07:27Z |
| publishDate | 2020-07-01 |
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| series | Diversity |
| spelling | doaj.art-6f93d3076e4d41a5b6650d2c6789253c2023-11-20T08:23:18ZengMDPI AGDiversity1424-28182020-07-0112829810.3390/d12080298Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater HabitatsRita Cordeiro0Rúben Luz1Vitor Vasconcelos2Vítor Gonçalves3Amélia Fonseca4CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, Universidade do Açores, 9500-321 Ponta Delgada, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, Universidade do Açores, 9500-321 Ponta Delgada, PortugalInterdisciplinary Centre of Marine and Environmental Research—CIIMAR/CIMAR, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, Universidade do Açores, 9500-321 Ponta Delgada, PortugalFaculdade de Ciências e Tecnologia, Universidade dos Açores, 9500-321 Ponta Delgada, PortugalCyanobacteria are among the most diverse morphological microorganisms that inhabit a great variety of habitats. Their presence in the Azores, a volcanic archipelago of nine islands in the middle of the North Atlantic Ocean, has already been reported. However, due to the high diversity of cyanobacteria habitats, their biodiversity is still understudied, mainly in extreme environments. To address this, a total of 156 cyanobacteria strains from Azores lakes, streams, thermal and terrestrial habitats were isolated. Identification was made based on a polyphasic approach using classical taxonomy (morphological characteristics and environmental data) and phylogeny among 81 strains assessed by maximum likelihood and Bayesian analysis of 16S rDNA partial sequences. The 156 isolates showed a high genera diversity (38) belonging to the orders Chroococcales, Nostocales, Oscillatoriales, and Synechococcales. Eleven new genera for the Azores habitats are here reported, reinforcing that cyanobacteria biodiversity in these islands is still much understudied. Phylogenetic analysis showed 14 clusters associated with these cyanobacteria orders, with evidence for six new genera and valuable information towards <i>Microchaete</i>/<i>Coleospermum</i> taxonomic revision that better reflects species environmental distribution. These results emphasize the need for cyanobacteria taxonomy revisions, through polyphasic studies, mainly in Synechococcales order and in the <i>Microchaete</i>/<i>Coleospermum</i>, <i>Nostoc</i>, and <i>Anabaena</i> genera.https://www.mdpi.com/1424-2818/12/8/29816S rRNAfreshwaterthermaloceanic islandsCyanophyceaepolyphyletic genera |
| spellingShingle | Rita Cordeiro Rúben Luz Vitor Vasconcelos Vítor Gonçalves Amélia Fonseca Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats Diversity 16S rRNA freshwater thermal oceanic islands Cyanophyceae polyphyletic genera |
| title | Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats |
| title_full | Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats |
| title_fullStr | Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats |
| title_full_unstemmed | Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats |
| title_short | Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats |
| title_sort | cyanobacteria phylogenetic studies reveal evidence for polyphyletic genera from thermal and freshwater habitats |
| topic | 16S rRNA freshwater thermal oceanic islands Cyanophyceae polyphyletic genera |
| url | https://www.mdpi.com/1424-2818/12/8/298 |
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