Nelsen Matthew P, Plata Eimy Rivas, Andrew Carrie J, Lücking Robert, Lumbsch H Thorsten
Committee on Evolutionary Biology, University of Chicago, 1025 E. 57th Street, Chicago, Illinois 60637, USA Department of Botany, The Field Museum, 1400 South Lake Shore Drive, Chicago, Illinois 60605-2496, USA Department of Botany, The Field Museum, 1400 South Lake Shore Drive, Chicago, Illinois 60605-2496, USA Department of Biological Sciences, University of Illinois-Chicago, 845 West Taylor Street (MC 066), Chicago, Illinois 60607, USA Department of Botany, The Field Museum, 1400 South Lake Shore Drive, Chicago, Illinois 60605-2496, USA Department of Biology, Northeastern Illinois University, 5500 North St. Louis Ave., Chicago, Illinois 60625, USADepartment of Botany, The Field Museum, 1400 South Lake Shore Drive, Chicago, Illinois 60605-2496, USA.
J Phycol. 2011 Apr;47(2):282-90. doi: 10.1111/j.1529-8817.2011.00962.x.
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.
近四分之一的地衣形成真菌与橘色藻科藻类共生，但其遗传多样性仍不为人知。最近针对自由生活的橘色藻科藻类开展的研究提供了一个系统发育背景，在此背景下可以提出有关这些藻类地衣化的问题。在这里，我们将采样集中于来自地衣的橘色藻科藻类，这些地衣在广泛的地理基质、生态和系统发育范围内呈现出多种生长形式（枝状和壳状）。我们已经证明，没有证据表明存在单一的严格地衣化藻类分支；相反，很多种类都显示出与地衣化真菌共生的能力。在来自单一地理区域和树木的地衣中的橘色藻科藻类之间也观察到了变异，这表明相邻的真菌可以与不同的橘色藻科藻类共生，这与绿藻门藻类和蓝细菌的研究结果一致。
