ESRF - The European Synchrotron’s Post

A genetic “off switch” that shuts down the process in which legume plants 🌿 convert atmospheric nitrogen into nutrients has been identified for the first time. It could be key to understanding how to increase the crop’s capacity to convert nitrogen from the air and improve soil quality. The team used a combination of techniques, including X-ray fluorescence on ID21 at the ESRF, where they tracked the distribution of zinc in the root nodules of Lotus plants in low-nitrate soils and in nitrate-rich soils. This led to the secondary discovery that zinc levels play a role in triggering FUN to become active and shut down nitrogen fixation. “We found that changing soil nitrogen alters the levels of zinc in the plant. Zinc had not previously been linked to the regulation of nitrogen fixation, but our study found that a change in zinc levels in turn activates FUN, which then controls a large number of genes that shut down nitrogen fixation,” said Kasper Andersen , co-author and ENSA researcher. The results are published in Nature Portfolio . ➡️https://lnkd.in/e6GHx52B Dugald Reid Hiram Castillo-Michel Manuel Gonzalez-Guerrero La Trobe University Aarhus University Universidad Politécnica de Madrid

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