A unicellular cyanobacterium relies on sodium energetics to fix N2

Si Tang, Xueyu Cheng, Yaqing Liu, Lu Liu, Dai Liu, Qi Yan, Jianming Zhu, Jin Zhou, Yuyang Jiang, Katrin Hammerschmidt () and Zhonghua Cai ()
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Si Tang: Tsinghua Shenzhen International Graduate School
Xueyu Cheng: Tsinghua Shenzhen International Graduate School
Yaqing Liu: Tsinghua Shenzhen International Graduate School
Lu Liu: Tsinghua Shenzhen International Graduate School
Dai Liu: Tsinghua Shenzhen International Graduate School
Qi Yan: Tsinghua Shenzhen International Graduate School
Jianming Zhu: Tsinghua Shenzhen International Graduate School
Jin Zhou: Tsinghua Shenzhen International Graduate School
Yuyang Jiang: National Innovation Center for Molecular Drug
Katrin Hammerschmidt: Kiel University
Zhonghua Cai: Tsinghua Shenzhen International Graduate School

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract Diazotrophic cyanobacteria can fix nitrogen gas (N2) but are usually scarce in nitrogen-limited coastal waters, which poses an apparent ecological paradox. One hypothesis is that high salinities (> 10 g/L NaCl) may inhibit cyanobacterial N2 fixation. However, here we show that N2 fixation in a unicellular coastal cyanobacterium exclusively depends on sodium ions and is inhibited at low NaCl concentrations (

Date: 2024
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DOI: 10.1038/s41467-024-53978-9

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