Nitrogen Removal

Candidatus Nitrotoga

Introducing Candidatus Nitrotoga, a genus of cold-adapted bacteria important for the nitrogen cycle!

Candidatus Nitrotoga is a genus that plays a role in the nitrification process, specifically in the oxidation of ammonia to nitrate. Its involvement centers on the oxidation of nitrite (NO2-) to nitrate (NO3-), constituting the crucial second step in the nitrification process. This process is vital for preventing the accumulation of harmful ammonia and nitrite in the environment, contributing to the overall health of ecosystems and supporting wastewater treatment in engineered systems.

Originally discovered in permafrost-affected soil, Candidatus Nitrotoga’s ability to thrive in lower temperatures positions it as a significant contributor in engineered systems such as wastewater treatment plants, particularly during cold seasons when other bacteria may not be as active. For instance, it can coexist and interact with other nitrite-oxidizing bacteria like Nitrospira and Nitrobacter, enabling the optimization of treatment plants in different seasons.

Interestingly, various species of Candidatus Nitrotoga are also present in mild and high-temperature environments. In natural settings, Candidatus Nitrotoga can be found in glacial and periglacial soils, temperate freshwater and groundwater, urban and agriculturally impacted areas, caves, underground soils, and iron-rich environments.

The identification of Candidatus Nitrotoga species in freshwater or groundwater can serve as an indicator of an active nitrogen cycle, which is crucial for maintaining nitrogen balance in ecosystems but can also signal problems related to excess nitrogen.

At Orvion, we employ DNA-based techniques to detect Candidatus Nitrotoga in both natural and artificial environments. This knowledge aids us in monitoring water quality and ecosystem health and allows us to provide solutions when there is an excess of nitrogen in the water.

If you are interested in learning more about the removal of toxic forms of nitrogen from water, follow us on Linkedin to stay updated and visit our website for additional information!

Other themes