AUTHOR=Li Zhiyong , Czajkowski Robert TITLE=Editorial: Insights in microbial symbioses: 2021 JOURNAL=Frontiers in Microbiology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2022.1022893 DOI=10.3389/fmicb.2022.1022893 ISSN=1664-302X