AUTHOR=Xiao Ke-Qing , Dai Xinfeng , Chen Xueping , Bao Peng , Wang Kai TITLE=Editorial: The Interplay Between Freshwater Microorganisms and Water Quality JOURNAL=Frontiers in Environmental Science VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2021.784784 DOI=10.3389/fenvs.2021.784784 ISSN=2296-665X