New insights intoChroococcus(Cyanobacteria) and two related genera:Cryptococcumgen. nov. andInacoccusgen. nov.

Gama, Watson Arantes; Rigonato, Janaína; Fiore, Marli Fátima; Sant’Anna, Célia Leite

doi:10.1080/09670262.2018.1563913

Cited by 20 publications

(25 citation statements)

References 34 publications

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“…In contrast, the phylogenetic results of the present study suggested that Eucapsis-like strain CHAB 4018 is part of the large Chroococcus 'sensu lato' clade and is more closely related to Limnococcus and Chroococcus 'sensu stricto' than to the Eucapsis clade. Consistent with Gama et al (2019), our results indicated that Limnococcus was more closely related to Chroococcus than to Merismopedia and Eucapsis, which challenges the current family placement of Limnococcus. Phylogenetic analyses also showed that Eucapsis minor SAG 14.99 did not group with the other five strains of the defined Eucapsis clade (Fig.…”

Section: Discussionsupporting

confidence: 74%

“…Further morphological observations revealed a change in cell color from green to red in all cultivations of this new strain (Fig. 2H), which differs from the species Inacoccus CCIBt 3475 which produces red-colored sheaths (Gama et al 2019) and from Eucapsis spp. and Chroococcus spp.…”

Section: Discussionmentioning

confidence: 82%

“…Following polyphasic taxonomic investigations of Chroococcus, Komárková et al (2010) and Kováčik et al (2011) defined one particular clade of Chroococcus strains as the real clade for the genus (Chroococcus 'sensu stricto'). Gama et al (2019) examined Chroococcus-like strains from the Brazilian Atlantic Forest, and their results led to the establishment of two new genera Inacoccus and Cryptococcus which are related to Chroococcus, and they proposed the large phylogenetic clade Chroococcus 'sensu lato' to include the clades Chroococcus 'sensu stricto', Inacoccus, Cryptococcus, and Limnococcus (Fig. 1, Gama et al 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Gama et al (2019) examined Chroococcus-like strains from the Brazilian Atlantic Forest, and their results led to the establishment of two new genera Inacoccus and Cryptococcus which are related to Chroococcus, and they proposed the large phylogenetic clade Chroococcus 'sensu lato' to include the clades Chroococcus 'sensu stricto', Inacoccus, Cryptococcus, and Limnococcus (Fig. 1, Gama et al 2019). The genus Limnococcus was described as an independent genus after it was transferred from Chroococcus limneticus by Komárková et al (2010), and its distant generic position was verified.…”

Section: Discussionmentioning

confidence: 99%

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Neochroococcus gongqingensis gen. et sp. nov., a new member of coccoid cyanobacteria from a watercourse, Eastern China

Geng¹,

Wang²,

Cai³

et al. 2021

Fottea

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The taxonomy of coccoid cyanobacteria has been largely revised in recent years. In this study, a novel coccoid cyanobacterial strain was isolated from a watercourse at the Poyang Lake Model Research Base, Jiangxi province, Eastern China. A polyphasic approach combining morphological and molecular testing was used to characterize this strain referred to as CHAB 4018. Regarding colonial form and cellular spatial arrangement, this strain was morphologically similar to strains of the genus Eucapsis. The maximum 16S rRNA gene sequence similarity of this strain to the currently described cyanobacteria genera was 93.40%, exceeding the cutoff for genus delimitation in bacteriology. Furthermore, a phylogenetic tree based on 16S rRNA gene sequences indicated that strain CHAB 4018 formed a unique clade in the family Chroococcaceae and was phylogenetically close to the recently established genus Cryptococcum but distant from the Chroococcus 'sensu stricto' clade and from Eucapsis. Thus, a novel coccoid cyanobacterial genus with a new species is here described as Neochroococcus gongqingensis. A large phylogenetic tree using more strains suggested phylogenetic intermixture of Chroococcus-like and Eucapsis-like cyanobacteria, suggesting the need for further studies on the phylogeny and taxonomy of coccoid cyanobacteria.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Neochroococcus gongqingensis gen. et sp. nov., a new member of coccoid cyanobacteria from a watercourse, Eastern China

Geng¹,

Wang²,

Cai³

et al. 2021

Fottea

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“…For the Chroococcus-like strain, the 16S-23S ITS phylogeny was performed with representative strains from Chroococcus-like, Inacoccus, Cryptococcum, Gloeocapsa (syn. Limnococcus) and Chroococcus, whose sequences are available in Genbank and (Gama et al 2019). An overall alignment (n = 21) was generated with the selected sequences, all longer than 1494 bp.…”

Section: Introductionmentioning

confidence: 99%

Characterization of cyanobacteria isolated from thermal muds of Balaruc-Les-Bains (France) and description of a new genus and speciesPseudo-chroococcus couteii

Duval

Hamlaoui

Piquet

et al. 2020

Preprint

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Cyanobacteria are able to synthesize a high diversity of natural compounds that account for their success in the colonization of a variety of ecological niches. Many of them have beneficial properties. The mud from the thermal baths of Balaruc-Les-Bains, one of the oldest thermal baths in France, has long been recognized as a healing treatment for arthro-rheumatic diseases. To characterize the cyanobacteria living in these muds and the metabolites they potentially produce, several strains were isolated from the water column and biofilms of the retention basin and analyzed using a polyphasic approach. Morphological, ultrastructural and molecular (16S rRNA gene and 16S-23S ITS region sequencing) methods were employed to identify nine cyanobacterial strains belonging to the orders Chroococcales, Synechococcales, Oscillatoriales and Nostocales. The combination of morphological and genetic characteristics supported the description of a new genus and species with the type species as Pseudo-chroococcus couteii. The high taxonomic diversity in the muds of the thermal baths of Balaruc-Les-Bains along with literature reports of the potential for bioactive metabolite synthesis of these taxa allowed us to hypothesize that some of the metabolites produced by these strains could contribute to the therapeutic properties of the muds from Thermes de Balaruc-Les-Bains.

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Welcome to the jungle!: An overview of modern taxonomy of cyanobacteria

Kaštovský

2023

Hydrobiologia

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The application of modern molecular methods and phylogenetic approaches saw an explosion in cyanobacterial taxonomy in the first two decades of the twenty-first century. The relative ease of description of new taxa and the pressure to publish a high number of scientific papers has created apparent confusion. The situation is particularly complicated for ecologically oriented limnological research and practical hydrobiologists especially have numerous criticisms of this trend. On closer observation, however, the situation is not as tragic as it first appears. More than a thousand new species have been discovered or renamed and only 18 percent are freshwater planktonic species, which garner the most interest in routine analyses. Most new taxa are described from terrestrial habitats. Despite the increase in studies from tropical areas, most of the new species are from the temperate zone, which probably does not account for the reality. Significant advances in modern taxonomy are visible mainly for the trichal types, but other groups such as the pleurocapsal species are considerably less studied. In this article I try to show that, despite all the difficulties and limitations, it is not necessary to consider these rapid changes as a complication in common cyanobacteriological research.

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New insights intoChroococcus(Cyanobacteria) and two related genera:Cryptococcumgen. nov. andInacoccusgen. nov.

Cited by 20 publications

References 34 publications

Neochroococcus gongqingensis gen. et sp. nov., a new member of coccoid cyanobacteria from a watercourse, Eastern China

Neochroococcus gongqingensis gen. et sp. nov., a new member of coccoid cyanobacteria from a watercourse, Eastern China

Characterization of cyanobacteria isolated from thermal muds of Balaruc-Les-Bains (France) and description of a new genus and speciesPseudo-chroococcus couteii

Welcome to the jungle!: An overview of modern taxonomy of cyanobacteria

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