Journal
JOURNAL OF PHYCOLOGY
Volume 47, Issue 2, Pages 282-290Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1529-8817.2011.00962.x
Keywords
lichen; phylogeny; rbcL; symbiosis; Trentepohliales; Ulvophyceae
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Funding
- PI Robert Lucking [DEB 0715660]
- PI Conrad Schoch [DEB 0717476]
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Nearly one-fourth of the lichen-forming fungi associate with trentepohlialean algae, yet their genetic diversity remains unknown. Recent work focusing on free-living trentepohlialean algae has provided a phylogenetic context within which questions regarding the lichenization of these algae can be asked. Here, we concentrated our sampling on trentepohlialean algae from lichens producing a diversity of growth forms (fruticose and crustose) over a broad geographic substratum, ecological, and phylogenetic range. We have demonstrated that there is no evidence for a single clade of strictly lichenized algae; rather, a wide range demonstrated the ability to associate with lichenized fungi. Variation was also observed among trentepohlialean algae in lichens from a single geographic area and tree, suggesting that fungi in close proximity can associate with different trentepohlialean algae, consistent with the findings of trebouxiophycean algae and cyanobacteria.
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