Salinity change induces distinct climate feedbacks of nitrogen removal in saline lakes.

Current estimations of nitrogen biogeochemical cycling and NO emissions in global lakes as well as predictions of their future changes are overrepresented by freshwater datasets, while less consideration is given to widespread saline lakes with different salinity (representing salinization or desalinization). Here, we show that NO production by denitrification is the main process of reactive nitrogen (Nr, the general abbreviations of NH-N, NO-N and NO-N) removal in hypersaline lake sediments (e.g.

Insights into roles of triclosan in microalgal-bacterial symbiosis system treating wastewater.

Triclosan (TCS) is an antimicrobial agent and frequently detected in wastewater or water body. This study investigated the role of TCS in microalgal-bacterial symbiosis (MABS) system treating wastewater. The results showed that the removal efficiencies of NH-N, total nitrogen, and total phosphorus decreased under increased TCS stress, with decrease ratios of 26.

The diversity, origin, and evolutionary analysis of geosmin synthase gene in cyanobacteria.

The sesquiterpene geosmin, mainly originating from cyanobacteria, is considered one of the problematic odor compounds responsible for unpleasant-tasting and -smelling water episodes in freshwater supplies. The biochemistry and genetics of geosmin synthesis in cyanobacteria is well-elucidated and the geosmin synthase gene (geo) has been cloned and characterized in recent years. However, understanding the diversity, origin, and evolution of geo has been hindered by the limited availability of geo sequences to date.