Reptodigitus Chapmanii (Nostocales, Hapalosiphonaceae) Gen. Nov. : A Unique Nostocalean (Cyanobacteria) Genus Based on a Polyphasic Approach1
© 2019 Phycological Society of America.
| Veröffentlicht in: | Journal of phycology. - 1966. - 56(2020), 2 vom: 01. Apr., Seite 425-436 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2020
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| Zugriff auf das übergeordnete Werk: | Journal of phycology |
| Schlagworte: | Journal Article 16S rDNA cyanobacteria phylogeny systematics DNA, Bacterial RNA, Ribosomal, 16S |
| Zusammenfassung: | © 2019 Phycological Society of America. The Nostocales is a monophyletic, heterocytous lineage of cyanobacteria capable of akinete production and division in multiple planes, depending upon family-level clade. While present in a variety of ecosystems, the diversity of the Nostocales has been poorly elucidated. Due to environmentally -induced phenotypic plasticity, morphology alone is often insufficient to determine the true phylogenetic placement of these taxa. In order to bridge this gap, taxonomists now employ the polyphasic approach, combining methods such as morphological analysis, phylogenetic analysis based on DNA sequence and genetic identity based on ribosomal genes, and secondary structure of the 16S-23S ITS and 16S rRNA gene sequences, as well as ecological characterization. Using this combined approach, a new genus and species (Reptodigitus chapmanii gen. et sp. nov.) isolated from the St. Johns River (Jacksonville, Florida, USA) within the Nostocales is herein described. Phylogenetic analyses place this taxon within the Hapalosiphonaceae, sister to the clade containing Fischerella, Hapalosiphon, and Westiellopsis. The 16S-23S ITS secondary folding structure analysis also supports the erection of this new genus |
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| Beschreibung: | Date Completed 19.11.2020 Date Revised 19.11.2020 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1529-8817 |
| DOI: | 10.1111/jpy.12954 |