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Revealing new sponge-associated cyanobacterial diversity: Novel genera and species
- Source :
- Molecular phylogenetics and evolution. 155
- Publication Year :
- 2020
-
Abstract
- Cyanobacteria are often reported as abundant components of the sponge microbiome; however their diversity below the phylum level is still underestimated. Aiming to broaden our knowledge of sponge-cyanobacteria association, we isolated cyanobacterial strains from Aegean Sea sponges in previous research, which revealed high degree of novel cyanobacterial diversity. Herein, we aim to further characterize sponge-associated cyanobacteria and re-evaluate their classification based on an extensive polyphasic approach, i.e. a combination of molecular, morphological and ecological data. This approach resulted in the description of five new genera (Rhodoploca, Cymatolege, Metis, Aegeococcus, and Thalassoporum) and seven new species (R. sivonenia, C. spiroidea, C. isodiametrica, M. fasciculata, A. anagnostidisi, A. thureti, T. komareki) inside the order Synechococcales, and a new pleurocapsalean species (Xenococcus spongiosum). X. spongiosum is a baeocyte-producing species that shares some morphological features with other Xenococcus species, but has distinct phylogenetic and ecological identity. Rhodoploca, Cymatolege, Metis and Thalassoporum are novel well supported linages of filamentous cyanobacteria that possess distinct characters compared to their sister taxa. Aegeococcus is a novel monophyletic linage of Synechococcus-like cyanobacteria exhibiting a unique ecology, as sponge-dweller. The considerable number of novel taxa characterized in this study highlights the importance of employing polyphasic culture-dependent approaches in order to reveal the true cyanobacterial diversity associated with sponges.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Cyanobacteria
Phycobiliproteins
010603 evolutionary biology
01 natural sciences
03 medical and health sciences
Monophyly
RNA, Ribosomal, 16S
DNA, Ribosomal Spacer
Genetics
Animals
Molecular Biology
Ecology, Evolution, Behavior and Systematics
Phylogeny
Synechococcales
biology
Phylogenetic tree
Base Sequence
Phylum
biology.organism_classification
Porifera
Sponge
030104 developmental biology
Taxon
Sister group
Evolutionary biology
Nucleic Acid Conformation
Subjects
Details
- ISSN :
- 10959513
- Volume :
- 155
- Database :
- OpenAIRE
- Journal :
- Molecular phylogenetics and evolution
- Accession number :
- edsair.doi.dedup.....30660d7d25395f8ba09896742088409f