Science, Space and Technology News 2024
The Rhizobial nitrogen fixing symbionts residing inside diatoms collected from the tropical North Atlantic. The nucleus of the diatom is shown in bright blue. Credit: Mertcan Esti/Max Planck Institute for Marine Microbiology, Bremen, Germany
Nitrogen is an essential component of all living organisms. It also plays a crucial role in regulating the growth of crops on land as well as microscopic marine plants, which produce half of the world’s oxygen. Although atmospheric nitrogen gas is the largest pool of nitrogen, plants cannot transform it into a usable form.
Co-author and bioinformatician Daan Speth from the University of Vienna adds: “Based on the nitrogenase gene fragment we had seen in many marine samples before, one would have expected to find this gene in a Vibrio-related organism, but by carefully piecing together the genetic information it turned out that instead, it belonged to a genome closely related to known Rhizobia, which typically live in symbiosis with legume plants.
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