Importance of Cyanobacterial Taxonomy in Biotechnological Applications

Bagchi, Suvendra Nath; Singh, Prashant

doi:10.1007/978-981-13-8315-1_13

Cited by 2 publications

(6 citation statements)

References 127 publications

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“…Nostoc is a polyphyletic genus, with a wide genetic diversity, that lacks morphological diacritical features making its identification based on morphological data problematic, thus the necessity of genetic information [14,25]. Our results show that Nostoc is widely spread, among clusters II to V, separated with high phylogenetic distances (Figure 2), which is in accordance with previous studies [18,19,[49][50][51][52][53].…”

Section: Discussionsupporting

confidence: 90%

“…Besides Nostoc other genera are reported as polyphyletic such as Anabaena, Rivularia, Tolypothrix, and Westiellopsis [25,[56][57][58]. Our results are not enough to support this assumption, however, the three strains of Anabaena (BACA0003, BACA0067, and BACA0079) in the phylogeny analysis are separated and have high phylogenetic distances.…”

Section: Discussioncontrasting

confidence: 61%

“…Nostoc taxonomy has undergone several revisions with the creation of new monophyletic genera [14,25], such as Aliinostoc [54], Desmonostoc [16], Halotia [20], and Mojavia [55]. Our results support Nostoc as a polyphyletic genus and highlights the important need for further taxonomical revision.…”

Section: Discussionsupporting

confidence: 56%

“…Phylogenetic distances are bigger in the Synechococcales clades (IX, XI, XIII, and XIV; Figure 2) which suggests fewer similarities between these strains. Synechococcales is a polyphyletic group of both unicellular and filamentous cyanobacteria that needs revision, even at the family level [14,25]. The threshold accepted for distinguishing cyanobacteria genus is 95% for sequence similarity based on the 16S rRNA gene [63].…”

Section: Discussionmentioning

confidence: 99%

“…Many other studies address this problem, but most of them do not consider other habitats, such as brackish or thermal habitats, mainly due to the lack of available cultured strains. More complex genera are e.g., Nostoc and Leptolyngbya where the lack of diacritical features has been of great concern for taxonomic identification in cultured strains with difficult taxonomic identification [20,25]. Contributions to this problematic are being addressed mainly by genetic techniques with the characterization of several Nostoc alike genera (e.g., Desmonostoc, Halotia) [16,20] and Leptolyngbya alike genera (e.g., Pegethrix, Cartusia) [17].…”

Section: Introductionmentioning

confidence: 99%

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Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats

et al. 2020

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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 Microchaete/Coleospermum 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 Microchaete/Coleospermum, Nostoc, and Anabaena genera.

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Section: Discussionsupporting

confidence: 90%

Section: Discussioncontrasting

confidence: 61%

Section: Discussionsupporting

confidence: 56%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats

et al. 2020

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A Critical Review of Cyanobacteria Distribution and Cyanotoxins Occurrence in Atlantic Ocean Islands

Cordeiro

Luz

Vasconcelos

et al. 2020

Cryptogamie, Algologie

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Cyanobacteria are diverse, complex and a unique group of microorganisms that inhabit a wide variety of environments. Contrarily to continental areas, studies on cyanobacteria in islands are scarce and need to be reinforced, since climate change impacts are expected to be harsher in islands, due to their geographical isolation and higher exposition to external influences. Here we present a review of the occurrence of cyanobacteria and cyanotoxins in inland and coastal ecosystems in the Atlantic Ocean islands. These microorganisms were reported from diverse habitats, including saline thermal lakes A critical review of cyanobacteria distribution and cyanotoxins occurrence in Atlantic Ocean islands CRYPTOGAMIE, ALGOLOGIE • 2020 • 41 (9)

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Importance of Cyanobacterial Taxonomy in Biotechnological Applications

Cited by 2 publications

References 127 publications

Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats

Cyanobacteria Phylogenetic Studies Reveal Evidence for Polyphyletic Genera from Thermal and Freshwater Habitats

A Critical Review of Cyanobacteria Distribution and Cyanotoxins Occurrence in Atlantic Ocean Islands

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