Koriem, AM/ Ahmadjian, V 1986: An ultrastructural study of lichenized and cultured Nostoc photobionts of Peltigera canina, Peltigera rufescens, and Peltigera spuria. - Endocytobiosis and Cell Research3: 65-78. [RLL List # 128-65 / Rec.# 10373] Keywords: PELTIGERA/ ALGAE/ NOSTOC/ TEM/ ULTRASTRUCTURE/ CULTURE/ MORPHOLOGY
Abstract: 10 figures. 2 tables. [Ultrastructural observations on Nostoc photobionts in three Peltigera species grown in culture and compared with those in the lichen association. Several differences were noted. "The ability of lichenized Nostoc photobionts to assume characteristics of free-living cyanobacteria when they are removed from their symbiotic state suggests that coevolution has not occurred to any great extent in the fungal-algal association of Peltigera."]