Genomic insights into the antarctic cyanobacterium Nostoc sp. CALU 1950.

Natalia Velichko, Alexander Balkin, Mikhail Rayko, Elizaveta Bedareva, Anastasia Makeeva

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Article in Archives of microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Natalia VelichkoSt Petersburg State University, 7/9 Universitetskaya nab, Saint Petersburg, 199034, Russian Federation. n.velichko@spbu.ru.ORCID https://orcid.org/0000-0002-0540-9425

Alexander BalkinInstitute for Cellular and Intracellular Symbiosis UrB RAS, Pionerskaya str., 11, Orenburg, 460000, Russian Federation.

Mikhail RaykoInstitute of Cytology RAS, Tichoretskiy pr., 4, Saint Petersburg, 197110, Russian Federation.

Elizaveta BedarevaSirius University of Science and Technology, Olimpiskiy pr., 1, Sochii, 354340, Russian Federation.

Anastasia MakeevaSt Petersburg State University, 7/9 Universitetskaya nab, Saint Petersburg, 199034, Russian Federation.

Funding

Saint Petersburg State University Research Project 124032000041-1

6 · The paper itself

Abstract

Heterocystous filamentous cyanobacteria of the genus Nostoc are vital primary producers of bioavailable nitrogen and carbon across diverse ecosystems. Here, we present the genomic and morphological characterization of Nostoc sp. CALU 1950, isolated from an Antarctic littoral mat. Phylogenetic analysis firmly places strain CALU 1950 within the Nostoc sensu stricto clade, sharing the highest genetic identity with Nostoc edaphicum CCNP1411. The 8.76 Mb draft genome contains 7463 protein-coding genes, with 2400 functionally annotated by KEGG. Genomic mining revealed a diverse array of biosynthetic gene clusters (BGCs) involved in secondary metabolism, primarily driven by non-ribosomal peptide synthase (NRPS) and polyketide synthase (PKS) pathways. The high structural synteny of cyanopeptolin (CP) and anabaenopeptin (AP) clusters to reference strains underscores the genetic stability of these strain within the lineage.

Indexed as

Genome, BacterialNostocAntarctic RegionsBacterial ProteinsGenomicsMultigene FamilyPeptide SynthasesPhylogenyPolyketide SynthasesSecondary MetabolismBacterial Proteinsnon-ribosomal peptide synthasePeptide SynthasesPolyketide SynthasesBioactive compoundsGenome miningMetabolic potentialMorphologyNovel strain

Identifiers

PMID42501096

DOI10.1371/journal.pone.0034064

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