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Ecological Specialization of Two Photobiont-Specific Maritime Cyanolichen Species of the Genus Lichina.
PLoS One. 2015; 10(7):e0132718.Plos

Abstract

All fungi in the class Lichinomycetes are lichen-forming and exclusively associate with cyanobacteria. Two closely related maritime species of the genus Lichina (L. confinis and L. pygmaea) show similar distribution ranges in the Northeast Atlantic, commonly co-occurring at the same rocky shores but occupying different littoral zones. By means of 16S rRNA and phycocyanin operon markers we studied a) the phylogenetic relationships of cyanobionts associated with these species, b) the match of divergence times between both symbionts, and c) whether Lichina species differ in photobiont association and in how geography and ecology affect selectivity. The cyanobionts studied are closely related to both marine and freshwater strains of the genus Rivularia. We found evidence of a high specificity to particular cyanobiont lineages in both species: Lichina pygmaea and L. confinis incorporate specific lineages of Rivularia that do not overlap at the haplotype nor the OTU levels. Dating divergences of the fungal and cyanobacterial partners revealed an asynchronous origin of both lineages. Within each fungal species, selectivity varied across the studied area, influenced by environmental conditions (both atmospheric and marine), although patterns were highly correlated between both lichen taxa. Ecological speciation due to the differential association of photobionts to each littoral zone is suspected to have occurred in marine Lichina.

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Authors+Show Affiliations

Ortiz-Álvarez R
Integrative Freshwater Ecology Group, Center of Advanced Studies of Blanes, Spanish Council for Research (CEAB-CSIC), Blanes, Girona, Spain.
de Los Ríos A
Department of Biogeochemistry and Microbial Ecology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain.
Fernández-Mendoza F
Institute of Botany, Karl-Franzens-Universität Graz, A-8010, Graz, Austria.
Torralba-Burrial A
Biosfera Consultoría Medioambiental, Candamo, 5 Bajos, 33012, Oviedo, Spain.
Pérez-Ortega S
Department of Biogeochemistry and Microbial Ecology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain.

MeSH

AscomycotaBase SequenceBayes TheoremCyanobacteriaEcosystemFresh WaterGenetic SpeciationHaplotypesLichensMolecular Sequence DataOperonPhycocyaninPhylogenyRNA, Ribosomal, 16SSeawaterSpainSymbiosis

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26181436

Citation

Ortiz-Álvarez, Rüdiger, et al. "Ecological Specialization of Two Photobiont-Specific Maritime Cyanolichen Species of the Genus Lichina." PloS One, vol. 10, no. 7, 2015, pp. e0132718.
Ortiz-Álvarez R, de Los Ríos A, Fernández-Mendoza F, et al. Ecological Specialization of Two Photobiont-Specific Maritime Cyanolichen Species of the Genus Lichina. PLoS One. 2015;10(7):e0132718.
Ortiz-Álvarez, R., de Los Ríos, A., Fernández-Mendoza, F., Torralba-Burrial, A., & Pérez-Ortega, S. (2015). Ecological Specialization of Two Photobiont-Specific Maritime Cyanolichen Species of the Genus Lichina. PloS One, 10(7), e0132718. https://doi.org/10.1371/journal.pone.0132718
Ortiz-Álvarez R, et al. Ecological Specialization of Two Photobiont-Specific Maritime Cyanolichen Species of the Genus Lichina. PLoS One. 2015;10(7):e0132718. PubMed PMID: 26181436.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ecological Specialization of Two Photobiont-Specific Maritime Cyanolichen Species of the Genus Lichina. AU - Ortiz-Álvarez,Rüdiger, AU - de Los Ríos,Asunción, AU - Fernández-Mendoza,Fernando, AU - Torralba-Burrial,Antonio, AU - Pérez-Ortega,Sergio, Y1 - 2015/07/16/ PY - 2015/03/17/received PY - 2015/06/17/accepted PY - 2015/7/17/entrez PY - 2015/7/17/pubmed PY - 2016/4/28/medline SP - e0132718 EP - e0132718 JF - PloS one JO - PLoS One VL - 10 IS - 7 N2 - All fungi in the class Lichinomycetes are lichen-forming and exclusively associate with cyanobacteria. Two closely related maritime species of the genus Lichina (L. confinis and L. pygmaea) show similar distribution ranges in the Northeast Atlantic, commonly co-occurring at the same rocky shores but occupying different littoral zones. By means of 16S rRNA and phycocyanin operon markers we studied a) the phylogenetic relationships of cyanobionts associated with these species, b) the match of divergence times between both symbionts, and c) whether Lichina species differ in photobiont association and in how geography and ecology affect selectivity. The cyanobionts studied are closely related to both marine and freshwater strains of the genus Rivularia. We found evidence of a high specificity to particular cyanobiont lineages in both species: Lichina pygmaea and L. confinis incorporate specific lineages of Rivularia that do not overlap at the haplotype nor the OTU levels. Dating divergences of the fungal and cyanobacterial partners revealed an asynchronous origin of both lineages. Within each fungal species, selectivity varied across the studied area, influenced by environmental conditions (both atmospheric and marine), although patterns were highly correlated between both lichen taxa. Ecological speciation due to the differential association of photobionts to each littoral zone is suspected to have occurred in marine Lichina. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/26181436/Ecological_Specialization_of_Two_Photobiont_Specific_Maritime_Cyanolichen_Species_of_the_Genus_Lichina_ DB - PRIME DP - Unbound Medicine ER -