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Article

Final Destination? Pinpointing Hyella disjuncta sp. nov. PCC 6712 (Cyanobacteria) Based on Taxonomic Aspects, Multicellularity, Nitrogen Fixation and Biosynthetic Gene Clusters

1
Department of Integrative Biotechnology, University of Applied Sciences Kaiserslautern, Carl-Schurz-Str. 10–16, 66953 Pirmasens, Germany
2
Department of Technical Biochemistry, Technical University of Dresden, Bergstr. 66, 01069 Dresden, Germany
3
Department of Ecology, University of Kaiserslautern, Erwin Schrödinger Str. 14, 67663 Kaiserslautern, Germany
4
Department of Plant Ecology and Systematics, University of Kaiserslautern, Erwin-Schrödinger Str. 52, 67663 Kaiserslautern, Germany
*
Author to whom correspondence should be addressed.
Both authors contributed equally to this article.
Academic Editor: Christopher H. House
Life 2021, 11(9), 916; https://doi.org/10.3390/life11090916
Received: 27 July 2021 / Revised: 25 August 2021 / Accepted: 30 August 2021 / Published: 3 September 2021
(This article belongs to the Special Issue Cyanobacteria: Advances in (Meta-)Genomics and Proteomics)
Unicellular cyanobacteria inhabit a wide range of ecosytems and can be found throughout the phylum offering space for taxonomic confusion. One example is strain PCC 6712 that was described as Chlorogloea sp. (Nostocales) and later assigned to the genus Chroococcidiopsis (Chroococcidiopsidales). We now show that this strain belongs to the order Pleurocapsales and term it Hyella disjuncta based on morphology, genome analyses and 16S-23S ITS rRNA phylogeny. Genomic analysis indicated that H. disjuncta PCC 6712 shared about 44.7% orthologue genes with its closest relative H. patelloides. Furthermore, 12 cryptic biosynthetic gene clusters (BGCs) with potential bioactivity, such as a mycosporine-like amino acid BGC, were detected. Interestingly, the full set of nitrogen fixation genes was found in H. disjuncta PCC 6712 despite its inability to grow on nitrogen-free medium. A comparison of genes responsible for multicellularity was performed, indicating that most of these genes were present and related to those found in other cyanobacterial orders. This is in contrast to the formation of pseudofilaments—a main feature of the genus Hyella—which is weakly expressed in H. disjuncta PCC 6712 but prominent in Hyella patelloides LEGE 07179. Thus, our study pinpoints crucial but hidden aspects of polyphasic cyanobacterial taxonomy. View Full-Text
Keywords: Pleurocapsales; genomics; biosynthetic gene cluster; Chroococcidiopsis; Hyella Pleurocapsales; genomics; biosynthetic gene cluster; Chroococcidiopsis; Hyella
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MDPI and ACS Style

Jung, P.; D’Agostino, P.M.; Brust, K.; Büdel, B.; Lakatos, M. Final Destination? Pinpointing Hyella disjuncta sp. nov. PCC 6712 (Cyanobacteria) Based on Taxonomic Aspects, Multicellularity, Nitrogen Fixation and Biosynthetic Gene Clusters. Life 2021, 11, 916. https://doi.org/10.3390/life11090916

AMA Style

Jung P, D’Agostino PM, Brust K, Büdel B, Lakatos M. Final Destination? Pinpointing Hyella disjuncta sp. nov. PCC 6712 (Cyanobacteria) Based on Taxonomic Aspects, Multicellularity, Nitrogen Fixation and Biosynthetic Gene Clusters. Life. 2021; 11(9):916. https://doi.org/10.3390/life11090916

Chicago/Turabian Style

Jung, Patrick, Paul M. D’Agostino, Katharina Brust, Burkhard Büdel, and Michael Lakatos. 2021. "Final Destination? Pinpointing Hyella disjuncta sp. nov. PCC 6712 (Cyanobacteria) Based on Taxonomic Aspects, Multicellularity, Nitrogen Fixation and Biosynthetic Gene Clusters" Life 11, no. 9: 916. https://doi.org/10.3390/life11090916

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