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DOI:	10.1371/journal.pone.0132718
论文题名:	Ecological Specialization of Two Photobiont-Specific Maritime Cyanolichen Species of the Genus Lichina
作者:	Rüdiger Ortiz-Álvarez; Asunción de los Ríos; Fernando Fernández-Mendoza; Antonio Torralba-Burrial; Sergio Pérez-Ortega
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2015
发表日期:	2015-7-16
卷:	10, 期:7
语种:	英语
英文关键词:	Haplotypes ; Lichenology ; Phylogenetics ; Phylogeography ; Phylogenetic analysis ; Ribosomal RNA ; Coastal ecology ; Marine ecology
英文摘要:	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.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0132718&type=printable
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资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/21082
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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journal.pone.0132718.PDF（3846KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Integrative Freshwater Ecology Group, Center of Advanced Studies of Blanes, Spanish Council for Research (CEAB-CSIC), Blanes, Girona, Spain;Department of Biogeochemistry and Microbial Ecology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain;Institute of Botany, Karl-Franzens-Universität Graz, A-8010, Graz, Austria;Biosfera Consultoría Medioambiental, Candamo, 5 Bajos, 33012, Oviedo, Spain;Department of Biogeochemistry and Microbial Ecology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain

Recommended Citation:

Rüdiger Ortiz-Álvarez,Asunción de los Ríos,Fernando Fernández-Mendoza,et al. Ecological Specialization of Two Photobiont-Specific Maritime Cyanolichen Species of the Genus Lichina[J]. PLOS ONE,2015-01-01,10(7)

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