The Systematics, Taxonomy and Molecular Phylogeny of Cyanobacteria and Algae

A special issue of Biology (ISSN 2079-7737).

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 5171

Special Issue Editors


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Guest Editor
Research Department for Limnology Mondsee, Leopold-Franzens-University of Innsbruck, A-5310 Mondsee, Austria
Interests: molecular phylogeny; systematics; taxonomy; algae; cyanobacteria; protists; nomenclature

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Guest Editor
Albrecht-von-Haller-Institute of Plant Sciences, Experimental Phycology and Culture Collection of Algae, Georg-August-University of Göttingen, D-37073 Göttingen, Germany
Interests: morphology; systematics; taxonomy of green algae; cyanobacteria; ecology; biodiversity

Special Issue Information

Dear Colleagues,

Phylogenetic analyses of molecular marker genes have revolutionized the systematics and taxonomy of algae and cyanobacteria. Many genera and species have been revised, and new ones have been described using molecular data. The combination of classical and modern methods in an integrative approach has revealed the natural assemblage of biodiversity among algae and cyanobacteria. For environmental studies using high-throughput sequencing and DNA barcoding approaches, it is necessary to have accurately assigned reference sequences in databases, and ideally cultured material in public culture collections available for comparative studies. Despite the increasing efforts in chloroplast and/or whole genome sequencing, the knowledge about algal and cyanobacterial biodiversity is increasingly reduced to sequence data. The purpose of this Special Issue is to highlight the importance of the combination of both fields—classical and modern approaches. This Special Issue invites you to submit original research papers and reviews about specific algal and cyanobacterial groups.

Dr. Thomas Pröschold
Dr. Tatyana M. Darienko
Guest Editors

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Keywords

  • generic and species concepts
  • DNA barcoding
  • biodiversity
  • evolution
  • genome sequencing
  • nomenclature

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Published Papers (1 paper)

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Research

19 pages, 2316 KiB  
Article
Trebouxia lynnae sp. nov. (Former Trebouxia sp. TR9): Biology and Biogeography of an Epitome Lichen Symbiotic Microalga
by Eva Barreno, Lucia Muggia, Salvador Chiva, Arantzazu Molins, César Bordenave, Francisco García-Breijo and Patricia Moya
Biology 2022, 11(8), 1196; https://doi.org/10.3390/biology11081196 - 10 Aug 2022
Cited by 13 | Viewed by 3669
Abstract
Two microalgal species, Trebouxia jamesii and Trebouxia sp. TR9, were detected as the main photobionts coexisting in the thalli of the lichen Ramalina farinacea. Trebouxia sp. TR9 emerged as a new taxon in lichen symbioses and was successfully isolated and propagated [...] Read more.
Two microalgal species, Trebouxia jamesii and Trebouxia sp. TR9, were detected as the main photobionts coexisting in the thalli of the lichen Ramalina farinacea. Trebouxia sp. TR9 emerged as a new taxon in lichen symbioses and was successfully isolated and propagated in in vitro culture and thoroughly investigated. Several years of research have confirmed the taxon Trebouxia sp. TR9 to be a model/reference organism for studying mycobiont–photobiont association patterns in lichen symbioses. Trebouxia sp. TR9 is the first symbiotic, lichen-forming microalga for which an exhaustive characterization of cellular ultrastructure, physiological traits, genetic and genomic diversity is available. The cellular ultrastructure was studied by light, electron and confocal microscopy; physiological traits were studied as responses to different abiotic stresses. The genetic diversity was previously analyzed at both the nuclear and organelle levels by using chloroplast, mitochondrial, and nuclear genome data, and a multiplicity of phylogenetic analyses were carried out to study its intraspecific diversity at a biogeographical level and its specificity association patterns with the mycobiont. Here, Trebouxia sp. TR9 is formally described by applying an integrative taxonomic approach and is presented to science as Trebouxia lynnae, in honor of Lynn Margulis, who was the primary modern proponent for the significance of symbiosis in evolution. The complete set of analyses that were carried out for its characterization is provided. Full article
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