NostocNostoc communeNostoc muscorumCyanobacteriaZamiaceaeAnabaenaLichensSequence Analysis, DNANitrogen FixationSpecies SpecificityGenes, BacterialRNA, Ribosomal, 16SBacterial ProteinsMicrocystinsHepatophytaSymbiosisDNA, RibosomalEscherichia coliDNA, BacterialMolecular Sequence DataBacterial Typing TechniquesAmino Acid SequenceGene Expression Regulation, BacterialInteinsPigments, BiologicalMice, Inbred StrainsDesiccationAcetyleneMutationVirulence