R. Lücking, J. D. Lawrey, M. Sikaroodi, P. M. Gillevet, J. L. Chaves, H. J. M. Sipman and F. Bungartz 2009: Do lichens domesticate photobionts like farmers domesticate crops? Evidence from a previously unrecognized lineage of filamentous cyanobacteria. - American Journal of Botany96(8): 1409-1418. [RLL List # 216 / Rec.# 31181] Keywords: CYANOBACTERIA/ NOSTOC/ SCYTONEMA/ CHROOCOCCUS/ DICTYONEMA/ ACANTHOLICHEN/ COCCOCARPIA/ STEREOCAULON/ MOLECULAR PHYLOGENETICS/ RDNA SEQUENCES
Abstract: [Phylogenetic analysis using rDNA sequences of Scytonema and related filamentous and unicellular morphotypes from neotropical Dictyonema, Acantholichen, Coccocarpia and Stereocaulon lichen taxa. This photobiont clade " ... do not cluster with Scytonema but represents a novel, previously unrecognized, highly diverse, exclusively lichenized lineage, for which the name Rhizonema is available." These photobionts appear to have " ... evolved through photobiont sharing between unrelated, but ecologically similar, coexisting lineages of lichenized fungi ... via the selection of particular photobiont strains through and subsequent [to] horizontal transfer among mycobionts, a phenomenon not unlike crop domestication."]