Q.Name the bacteria responsible for conversion of nitrite to nitrate.

Nitrification is the exothermic, two-step bacterial conversion of ammonia into nitrate, the form usable by plants and animals: Nitrosomonas and Nitrosococcus first oxidise ammonia to nitrite, and Nitrobacter then oxidises nitrite to nitrate; these chemoautotrophic bacteria derive their own metabolic energy from this oxidation. Ammonification is the complementary process by which fungi, actinomycetes and ammonifying bacteria decompose the proteins of dead plants and animals, converting organic nitrogen first to amino acids and then to ammonia, which re-enters the soil as N …