100-word explainer: How microalgae produce nitrous oxide

Nitrous oxide (N₂O) — a potent greenhouse and ozone-depleting gas — is rising at the fastest rate in 22,000 years. N₂O correlates with the growth of microalgae: primary biomass producers in oceans and lakes. There’s evidence that microalgae produce N₂O, but the full biochemical insight is missing.

A preprint study found that the green microalga, Chlamydomonas reinhardtii, produces N₂O by: (1) using “flavodiiron proteins” in the light; and (2) using “cytochrome P450 enzymes” in the dark.

Microalgae are used in industrial productions (e.g. biofuels). Therefore, information on N₂O production will ensure the right selection of microalgae for sustainable, environmentally-friendly industrial applications.

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Read the full study titled: “Algal photosynthesis converts nitric oxide into nitrous oxide” in bioRxiv preprint: https://doi.org/10.1101/745463

Tags: Biotechnology, environment, greenhouse gas, ozone, Plant Science, sustainability, Water