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Draft Genome Sequences of Synechococcus sp. strains CCAP1479/9, CCAP1479/10, CCAP1479/13, CCY0621, and CCY9618: Five Freshwater Syn/Pro Clade Picocyanobacteria
Druce, E.; Grego, M.; Bolhuis, H.; Johnes, P.J.; Sánchez-Baracaldo, P. (2023). Draft Genome Sequences of Synechococcus sp. strains CCAP1479/9, CCAP1479/10, CCAP1479/13, CCY0621, and CCY9618: Five Freshwater Syn/Pro Clade Picocyanobacteria. Journal of Genomics 11: 26-36. https://dx.doi.org/10.7150/jgen.81013
In: Journal of Genomics. Ivyspring International Publisher: Wyoming, NSW. e-ISSN 1839-9940, more
Peer reviewed article  
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Author keywords
    Freshwater; Picocyanobacteria; Synechococcus; Genome; Synechococcus sp. CCAP1479/9; Synechococcus sp. CCAP1479/10; Synechococcus sp. CCAP1479/13; Synechococcus sp. CCY0621; Synechococcus sp. CCY9618
Authors  Top 
  • Druce, E.
  • Grego, M., more
  • Bolhuis, H., more
  • Johnes, P.J.
  • Sánchez-Baracaldo, P.
Abstract
    Picocyanobacteria are essential primary producers in freshwaters yet little is known about their genomic diversity and ecological niches. We report here five draft genomes of freshwater picocyanobacteria: Synechococcus sp. CCAP1479/9, Synechococcus sp. CCAP1479/10, and Synechococcus sp. CCAP1479/13 isolated from Lake Windermere in the Lake District, UK; and Synechococcus sp. CCY0621 and Synechococcus sp. CCY9618 isolated from lakes in The Netherlands. Phylogenetic analysis reveals all five strains belonging to sub-cluster 5.2 of the Synechococcus and Prochlorococcus clade of Cyanobacteria. These five strains are divergent from Synechococcus elongatus, an often-used model for freshwater Synechococcus. Functional annotation revealed significant differences in the number of genes involved in the transport and metabolism of several macro-molecules between freshwater picocyanobacteria from sub-cluster 5.2 and Synechococcus elongatus, including amino acids, lipids, and carbohydrates. Comparative genomic analysis identified further differences in the presence of photosynthesis-associated proteins while gene neighbourhood comparisons revealed alternative structures of the nitrate assimilation operon nirA.
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