AUTHOR=Zhang Yu-Qin , Tian Xin-Peng , Tisa Louis S. , Nouioui Imen , Li Wen-Jun TITLE=Editorial: A Focus on Actinobacteria: Diversity, Distribution, and Secondary Metabolites JOURNAL=Frontiers in Microbiology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2022.902360 DOI=10.3389/fmicb.2022.902360 ISSN=1664-302X