Haloleptolyngbya alcalis gen. et sp. nov., a new filamentous cyanobacterium from the soda lake Nakuru, Kenya

Dadheech, Pawan K.; Mahmoud, Huda; Kotut, Kiplagat; Krienitz, Lothar

doi:10.1007/s10750-012-1080-6

Cited by 52 publications

(39 citation statements)

References 66 publications

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“…Unfortunately, this circumscription is so broad that numerous genetically distinct strains and species were assigned to Leptolyngbya based on morphology, even though recent phylogenetic studies have demonstrated that the genus is polyphyletic and in need of taxonomic revision , Osorio-Santos et al 2014. This revisionary work has commenced, and over a dozen novel genera have been split out of Leptolyngbya thus far (Abed et al 2002, Turicchia et al 2009, Perkerson et al 2011, Taton et al 2011, Zammit et al 2012, Dadheech et al 2012, Vaz et al 2015, Song et al 2015a, 2015b, Miscoe et al, 2016, Sciuto et Moro 2016, Sciuto et al 2017, Strunecký et al 2017.…”

Section: Introductionmentioning

confidence: 99%

Nodosilinea chupicuarensis sp. nov. (Leptolyngbyaceae, Synechococcales) a subaerial cyanobacterium isolated from a stone monument in central Mexico

et al. 2018

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Microorganisms of subaerial biofilms, which develop on the surface of stone monuments, have been widely studied due to their impact on Cultural Heritage deterioration. Nevertheless, these extremophile microorganisms are poorly characterised. In this study, a cyanobacterial strain isolated from an archaeological zone in north-central Mexico was characterised through a polyphasic study based on ecological, morphological, and molecular data. Phylogenetic analyses were done using sequences of the 16S rRNA gene and the 16S-23S ITS region. Based on the polyphasic data, a new species corresponding to the genus Nodosilinea is described. This alkaliphilic species has optimum growth at pH of 9. Its fatty acid profile indicates that C18:1, 9E and C16:0 are its most abundant fatty acids. Extracellular polymeric substance production was verified on this strain. Only a few species of the genus Nodosilinea have been documented and described, and this is the first report of their presence in central Mexico. Hence the name Nodosilinea chupicuarensis sp. nov. is proposed.

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Section: Introductionmentioning

confidence: 99%

Nodosilinea chupicuarensis sp. nov. (Leptolyngbyaceae, Synechococcales) a subaerial cyanobacterium isolated from a stone monument in central Mexico

et al. 2018

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“…, Dadheech et al. , ). The isolation and characterization of these strains can generate interesting data about cyanobacterial distribution and behavior.…”

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confidence: 99%

Nonheterocytous cyanobacteria from Brazilian saline‐alkaline lakes

Andreote

Vaz

Genuário

et al. 2014

Journal of Phycology

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Saline-alkaline lakes are extreme environments that limit the establishment and development of life. The Nhecolândia, a subregion of the Pantanal wetland in Brazil, is characterized by the existence of ~500 saline-alkaline lakes, which support an underexplored and rich diversity of microorganisms. In this study, unicellular and homocytous cyanobacteria from five saline-alkaline lakes were accessed by culture-dependent approaches. Morphological evaluation and analyses of near complete sequences (~1400 nt) of the 16S rRNA genes were applied for phylogenetic and taxonomic placement. This polyphasic approach allowed for the determination of the taxonomic position of the isolated strains into the following genera: Cyanobacterium, Geminocystis, Phormidium, Leptolyngbya, Limnothrix, and Nodosilinea. In addition, fourteen Pseudanabaenales and Oscillatoriales representatives of putative novel taxa were found. These sequences fell into five new clades that could correspond to new generic units of the Pseudanabaenaceae and Phormidiaceae families.

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“…Despite the high similarity (>98%) of the cpcBA-IGS locus, some considerable difference (5%) in the ITS region was noted. Secondary structures of different helices (D1-D1´, Box-B, and V3) of the ITS have been used to differentiate cyanobacterial taxa particularly of the order Oscillatoriales (siegesMunD et al 2008;BohunicKá et al 2011;Johansen et al 2011;PerKerson et al 2011;DaDheech et al 2012b;hašler et al 2012). We found considerable differences in D1-D1´, V3 helices of D. fontinale and D. tharense.…”

Section: Discussionmentioning

confidence: 80%

“…PCR-based molecular detection of potential cyanotoxins production by cyanobacteria has been being successfully employed as a tool for characterizing oscillatorian taxa (DaDheech et al 2012b(DaDheech et al , 2013loPes et al 2012). In our investigations, we used selective primers to test for the presence of genes known for the synthesis of cyanotoxins (microcystin, anatoxin-a and saxitoxin).…”

Section: Discussionmentioning

confidence: 99%

Desertifilum fontinale sp. nov. (Oscillatoriales, Cyanobacteria) from a warm spring in East Africa, based on conventional and molecular studies.

Dadheech¹,

Mahmoud²,

Kotut³

et al. 2014

Fottea

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Abstract:Desertifilum is a filamentous cyanobacterium of crusts and biofilms, recently described from the extreme hot and dry Thar Desert in north-western India. A new species was isolated from a warm spring near Lake Bogoria, Kenya and was characterised by light and electron microscopy and phylogenetically using the 16S rRNA gene, beta and alpha subunits including intergenic spacer (cpcBA-IGS) and 16S-23S internal transcribed spacer (ITS). The aquatic habitat of the new material from Kenya revealed a wider distribution of members of this genus. The new taxon was found to be closest to Desertifilum tharense (Oscillatoriales). The separation of the new species described here as D. fontinale sp. nov., using conventional and molecular traits, was based on differences in phenotypic features, 16S-23S ITS sequence and habitat.

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Haloleptolyngbya alcalis gen. et sp. nov., a new filamentous cyanobacterium from the soda lake Nakuru, Kenya

Cited by 52 publications

References 66 publications

Nodosilinea chupicuarensis sp. nov. (Leptolyngbyaceae, Synechococcales) a subaerial cyanobacterium isolated from a stone monument in central Mexico

Nodosilinea chupicuarensis sp. nov. (Leptolyngbyaceae, Synechococcales) a subaerial cyanobacterium isolated from a stone monument in central Mexico

Nonheterocytous cyanobacteria from Brazilian saline‐alkaline lakes

Desertifilum fontinale sp. nov. (Oscillatoriales, Cyanobacteria) from a warm spring in East Africa, based on conventional and molecular studies.

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