Enhanced narH gene expression contributing to nitrite accumulation in simultaneous nitrification and denitrification under Na+ stress instead of K+ stress

Xiaomei Jiang,Hong Wang,Peike Wu,Yunhui Lei,Liangwei Deng,Wenguo Wang

Chemical Engineering Journal（2024）

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摘要

•N transformation wasn’t affected by K+ or Na_K combined stress at 2.86% salinity.•Na+ stress decreased NH4+-N removal and caused the serious NO2–-N accumulation.•Na+ stress significantly enhanced the expression of narH gene at 2.86% salinity.•Na+ stress resulted in the high abundance of denitrifiers especially Ottowia.

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关键词

Simultaneous nitrification and denitrification,Ion stress,Nitrite accumulation,Microbial community

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