Diversity of cyanobacteria at the Alaska North Slope with description of two new genera: Gibliniella and Shackletoniella

Strunecký, Otakar; Raabová, Lenka; Bernardová, Alexandra; Ivanova, Anna Pavlovna; Semanova, Alexandra; Crossley, Joel A.; Kaftan, David

doi:10.1093/femsec/fiz189

Cited by 33 publications

(32 citation statements)

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“…Leptodesmis is a newly described genus based on environmental, morphological, and molecular data (Raabova et al, 2019). Two species in this genus have been studied, L. alaskaensis (Strunecky et al, 2020) and L. paradoxa (Raabova et al, 2019). In our previous study, we isolated a Leptodesmis strain, A121, from an Erdaoqiao hot spring, Sichuan, China (Tang et al, 2018a).…”

Section: Introductionmentioning

confidence: 99%

Characterization of a Novel Hot-Spring Cyanobacterium Leptodesmis sichuanensis sp. Nov. and Genomic Insights of Molecular Adaptations Into Its Habitat

Tang

et al. 2022

Front. Microbiol.

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The newly described genus Leptodesmis comprises several strains of filamentous cyanobacteria from diverse, primarily cold, habitats. Here, we sequenced the complete genome of a novel hot-spring strain, Leptodesmis sp. PKUAC-SCTA121 (hereafter A121), isolated from Erdaoqiao hot springs (pH 6.32, 40.8°C), China. The analyses of 16S rRNA/16S-23S ITS phylogenies, secondary structures, and morphology strongly support strain A121 as a new species within Leptodesmis, Leptodesmis sichuanensis sp. nov. Notably, strain A121 is the first thermophilic representative of genus Leptodesmis and more broadly the first Leptodesmis sp. to have its genome sequenced. In addition, results of genome-scale phylogenetic analysis and average nucleotide/amino acid identity as well as in silico DNA-DNA hybridization and patristic analysis verify the establishment of genus Leptodesmis previously cryptic to Phormidesmis. Comparative genomic analyses reveal that the Leptodesmis A121 and Thermoleptolyngbya sichuanensis A183 from the same hot-spring biome exhibit different genome structures but similar functional classifications of protein-coding genes. Although the core molecular components of photosynthesis, metabolism, and signal transduction were shared by the two strains, distinct genes associated with photosynthesis and signal transduction were identified, indicating that different strategies might be used by these strains to adapt to that specific niche. Furthermore, the complete genome of strain A121 provides the first insight into the genomic features of genus Leptodesmis and lays the foundation for future global ecogenomic and geogenomic studies.

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Section: Introductionmentioning

confidence: 99%

Characterization of a Novel Hot-Spring Cyanobacterium Leptodesmis sichuanensis sp. Nov. and Genomic Insights of Molecular Adaptations Into Its Habitat

Tang

et al. 2022

Front. Microbiol.

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“…Morphological and anatomy traits are the main criteria for classifying and identifying cyanobacteria. Recent studies have shown that traditional cyanobacterial "morphospecies" are comprised of different taxonomic species [3][4][5][6][7]. On the other hand, many cyanobacterial taxa do not have gene sequence data.…”

Section: Introductionmentioning

confidence: 99%

“…That method, as a tool for next generation sequencing (NGS), will be able to uncover cyanobacterial diversity of natural assemblages. Currently, NGS results provide a high number of abstract organizational taxonomic units [4]. Unidentified units cannot be used for ecological or geographical tional taxonomic units [4].…”

Section: Introductionmentioning

confidence: 99%

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Cyanobacterial Diversity of the Northern Polar Ural Mountains

Davydov

2021

Diversity

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This study provides new results from an inventory of cyanobacterial species from the Northern Polar Ural Mountains. The article also compiles all existing published data on the cyanobacterial diversity of the region. This ecoregion is located in a unique geographical position in the transition between the sub-Arctic and low Arctic zones and heterogeneous natural conditions. Likely, the unexplored biodiversity of this area’s terrestrial cyanobacteria is high. In total, 52 localities were studied, with 232 samples collected. Cyanobacterial samples were studied under a light microscope. Species were identified based on morphological characteristics only. A total of 93 species of cyanobacteria were identified in different habitats; 70 species were found on wet rocks, 35 on the shores of water bodies, 27 in slow streams, and 21 on waterfalls. In total, 37 species are reported as part of the Ural flora for the first time, while three species (Chroococcus ercegovicii, Gloeocapsopsis cyanea, Gloeothece tepidariorum) were detected in Russian territory for the first time. The composition of the cyanobacterial flora of the Polar Urals was compared with the flora of the nearby Arctic and sub-Arctic regions. According to the Sorensen similarity index, the Polar Urals’ flora is more like the flora of Nenets Autonomous Okrug.

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“…2019, Strunecky et al. 2019), leading to the description of many novel genera such as Plectolyngbya, Nodosilinea, Pantanalinema , Alkalinema , Oculatella, Scytolyngbya, Thermoleptolyngbya, Onodrimia, Timaviella , Toxifilum, and Amazoninema (Perkerson et al. 2011, Taton et al.…”

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confidence: 99%

Monilinema gen. nov., a homocytous genus (Cyanobacteria, Leptolyngbyaceae) from saline–alkaline lakes of Pantanal wetlands, Brazil

Malone

Genuário

Vaz

et al. 2020

Journal of Phycology

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Cyanobacteria morphotypes with simple morphology, mainly thin filamentous homocytous strains, comprise a taxonomically complex group and represent a challenge in systematic studies. However, the polyphasic approach applied nowadays to investigate the cyanobacterial diversity has emerged as a powerful tool to undercover cryptic taxa and to set up a more natural classification system. Yet, studies exploring the cultured diversity of cyanobacteria from extreme tropical environments have paved the way to the discovery of new cyanobacteria taxa, enabling the description of Pantanalinema, Alkalinema, and Cephalothrix as novel genera from saline–alkaline lakes in Pantanal wetlands (Brazil). The present study investigated a set of cyanobacterial strains resembling Leptolyngbya morphotypes by means of its morphology, 16S ribosomal RNA (16S rRNA) phylogeny, and ITS secondary structures. Based on the shape and structure of their trichomes, the low levels of 16S rRNA identity coupled with the distinct phylogenetic position with regard to well establish genera, and their divergent ecological feature, these strains must be accommodated into a novel genus, named as Monilinema gen. nov., described under the provisions of the International Code of Nomenclature for algae, fungi, and plants. Accordingly, based on the singularity of the D1–D1′ and V3 helixes, these strains should be considered as a single species, Monilinema alkalinum.

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Diversity of cyanobacteria at the Alaska North Slope with description of two new genera: Gibliniella and Shackletoniella

Cited by 33 publications

References 34 publications

Characterization of a Novel Hot-Spring Cyanobacterium Leptodesmis sichuanensis sp. Nov. and Genomic Insights of Molecular Adaptations Into Its Habitat

Characterization of a Novel Hot-Spring Cyanobacterium Leptodesmis sichuanensis sp. Nov. and Genomic Insights of Molecular Adaptations Into Its Habitat

Cyanobacterial Diversity of the Northern Polar Ural Mountains

Monilinema gen. nov., a homocytous genus (Cyanobacteria, Leptolyngbyaceae) from saline–alkaline lakes of Pantanal wetlands, Brazil

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