Agricultural microbiology Biogeochemistry Denitrification Denitrifying microorganisms Ectomycorrhizas Endomycorrhizas Gene expression Genetic markers Genetics and Molecular Biology of Microorganisms, (New March 2000) Genomics Iron Microbial Ecology, (New March 2000) Microbial ecology Microbial flora Microorganisms Molecular Biology and Molecular Genetics, (Discontinued March 2000, Reinstated and Revised June 2002) Molecular genetics Molecular genetics techniques Mycorrhizal fungi Mycorrhizas Nitrification Nitrifying bacteria Nitrogen fixation Nitrogen fixing bacteria Nodulation Plant pathogenic bacteria Plant pathogens Rhizosphere Rhizosphere bacteria Root nodules