FIGURE 2: Lichen thallus structure of lung lichen Lobaria pulmonaria in cross-section. 3D reconstruction of FISH image stacks. Eubacteria (red) and Alphaproteobacteria (yellow) were found widespread on both, the upper and the lower cortex, while Betaproteobacteria (pink) were less abundant and locally contained. Fungal hyphae (blue) and algae located under the upper cortex (green) are visualized by their autofluorescence (from [10] with permission of Springer Nature).

10. Grube M, Cernava T, Soh J, Fuchs S, Aschenbrenner I, Lassek C, Wegner U, Becher D, Riedel K, Sensen CW, Berg G (2015). Exploring functional contexts of symbiotic sustain within lichen-associated bacteria by comparative omics. ISME J 9(2): 412-424. 10.1038/ismej.2014.138