This groundbreaking discovery not only sheds light on the intricate mechanisms of plant growth but also holds promise for revolutionizing crop resilience, especially in legume-based agriculture.
"Bacteria can cooperate with legumes to fix nitrogen from the air in root nodules. However, the nodules are sensitive to environmental influences such as temperature, drought, flooding, soil salinity, and high concentrations of nitrogen in the soil," elaborates Assistant Professor and lead author of the study, Jieshun Lin.
In this study the researcher identifies that FUN is an important transcription factor that control nodule breakdown when soil nitrogen concentrations are high:"FUN is regulated by a peculiar mechanism that monitor the cellular zinc levels directly and we show that FUN is inactivated by zinc into large filament structures and liberated into the active form when zinc levels are low," Professor Kasper Røjkjær Andersen explains.
Researchers are now investigating the mechanisms of how zinc signals are generated and decoded by FUN. They are looking forward to applying these new discoveries to legume crops such as faba bean, soybean and cowpea.Jieshun Lin, Peter K. Bjørk, Marie V. Kolte, Emil Poulsen, Emil Dedic, Taner Drace, Stig U. Andersen, Marcin Nadzieja, Huijun Liu, Hiram Castillo-Michel, Viviana Escudero, Manuel González-Guerrero, Thomas Boesen, Jan Skov Pedersen, Jens Stougaard, Kasper R.
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