Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/120287
Author(s): Brito Â.
Ramos V.
Mota R.
Lima S.
Santos A.
Vieira J.
Vieira C.P.
Kaštovský J.
Vasconcelos V.M.
Tamagnini P.
Title: Description of new genera and species of marine cyanobacteria from the Portuguese Atlantic coast
Publisher: Elsevier: 12 months
Issue Date: 2017
Abstract: Aiming at increasing the knowledge on marine cyanobacteria from temperate regions, we previously isolated and characterized 60 strains from the Portuguese foreshore and evaluate their potential to produce secondary metabolites. About 15% of the obtained 16S rRNA gene sequences showed less than 97% similarity to sequences in the databases revealing novel biodiversity. Herein, seven of these strains were extensively characterized and their classification was re-evaluated. The present study led to the proposal of five new taxa, three genera (Geminobacterium, Lusitaniella, and Calenema) and two species (Hyella patelloides and Jaaginema litorale). Geminobacterium atlanticum LEGE 07459 is a chroococcalean that shares morphological characteristics with other unicellular cyanobacterial genera but has a distinct phylogenetic position and particular ultrastructural features. The description of the Pleurocapsales Hyella patelloides LEGE 07179 includes novel molecular data for members of this genus. The filamentous isolates of Lusitaniella coriacea - LEGE 07167, 07157 and 06111 - constitute a very distinct lineage, and seem to be ubiquitous on the Portuguese coast. Jaaginema litorale LEGE 07176 has distinct characteristics compared to their marine counterparts, and our analysis indicates that this genus is polyphyletic. The Synechococcales Calenema singularis possess wider trichomes than Leptolyngbya, and its phylogenetic position reinforces the establishment of this new genus. © 2017 Elsevier
Subject: bacterial DNA
RNA 16S
Atlantic Ocean
bacterial gene
classification
cyanobacterium
cytology
genetics
nitrogen fixation
phylogeny
Portugal
species difference
statistical model
ultrastructure
Atlantic Ocean
Cyanobacteria
DNA, Bacterial
Genes, Bacterial
Likelihood Functions
Nitrogen Fixation
Phylogeny
Portugal
RNA, Ribosomal, 16S
Species Specificity
URI: https://hdl.handle.net/10216/120287
Source: Molecular Phylogenetics and Evolution, vol. 111, p. 18-34
Related Information: info:eu-repo/grantAgreement/FCT/5876/147268/PT
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:CIIMAR - Artigo em Revista Científica Internacional

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