AUTHOR=Ciancio Aurelio , Pieterse Corné M. J. , Mercado-Blanco Jesús TITLE=Editorial: Harnessing Useful Rhizosphere Microorganisms for Pathogen and Pest Biocontrol - Second Edition JOURNAL=Frontiers in Microbiology VOLUME=10 YEAR=2019 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2019.01935 DOI=10.3389/fmicb.2019.01935 ISSN=1664-302X