2024
DOI: 10.1101/2024.03.08.584021
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Unicellular cyanobacteria rely on sodium energetics to fix N2

Si Tang,
Xueyu Cheng,
Yaqing Liu
et al.

Abstract: Diazotrophic cyanobacteria can thrive in combined nitrogen (N)-limited environments due to their ability to fix nitrogen gas (N2) from the atmosphere. Despite this, they occur in low abundance in N-limited coastal waters, which represents an ecological paradox1–3. One hypothesis is that this is partly due to elevated salinity (> 10 g/L NaCl), which inhibits cyanobacterial N2fixation2,3. Here we show that N2fixation in a unicellular coastal cyanobacterium is not inhibited but rather exclusively dependent on … Show more

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