Comparison of phylogeographical structures of a lichenforming fungus and its green algal photobiont in western North America
نویسندگان
چکیده
Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074 Hubei, China, Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095-7239, USA, Biodiversity and Conservation Biology, Swiss Federal Research Institute WSL, Z€ urcherstrasse 111, CH-8903 Birmensdorf, Switzerland, Faculty of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjav ık, Iceland, Institute of the Environment and Sustainability, University of California, Los Angeles, CA 90095-1496, USA
منابع مشابه
Vertical and horizontal photobiont transmission within populations of a lichen symbiosis.
Lichens are widespread symbioses and play important roles in many terrestrial ecosystems. The genetic structure of lichens is the result of the association between fungal and algal populations constituting the lichen thallus. Using eight fungus- and seven alga-specific highly variable microsatellite markers on within-population spatial genetic data from 62 replicate populations across Europe, N...
متن کاملIdentity and genetic structure of the photobiont of the epiphytic lichen Ramalina menziesii on three oak species in southern California.
Lichens, a classic example of an obligate symbiosis between fungi and photobionts (which could be algae or cyanobacteria), are abundant in many terrestrial ecosystems. The genetic structure of the photobiont population found in association with a lichen-forming fungal species could be affected by fungal reproductive mode and by the spatial extent of gene flow in the photobiont. Using DNA sequen...
متن کاملLichens
What are lichens? The term lichen refers to a symbiotic association between a filamentous fungus, the ‘mycobiont’, and at least one photosynthetic organism, the ‘photobiont’, consisting of a micro alga, a cyanobacterium, or both (Figure 1). Although the symbiotic nature of lichens was first revealed in 1867, the development of a lichen thallus is often so integrated (Figure 1D) that they have b...
متن کاملGreen-algal photobiont diversity (Trebouxia spp.) in representatives of Teloschistaceae (Lecanoromycetes, lichen-forming ascomycetes)
The green algal photobionts of 12 Xanthoria, seven Xanthomendoza, two Teloschistes species and Josefpoeltia parva (all Teloschistaceae) were analyzed. Xanthoria parietina was sampled on four continents. More than 300 photobiont isolates were brought into sterile culture. The nuclear ribosomal internal transcribed spacer region (nrITS; 101 sequences) and the large subunit of the RuBiSco gene (rb...
متن کاملEcological specialization in Trebouxia (Trebouxiophyceae) photobionts of Ramalina menziesii (Ramalinaceae) across six range-covering ecoregions of western North America.
• Premise of the study: Many lichens exhibit extensive ranges spanning several ecoregions. It has been hypothesized that this wide ecological amplitude is facilitated by fungal association with locally adapted photobiont strains.• Methods: We studied the identity and geographic distribution of photobionts of the widely distributed North American lichen Ramalina menziesii based on rbcL (chloropl...
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