AUTHOR=Cesaro Patrizia , Gamalero Elisa , Zhang Junling , Pivato Barbara TITLE=Editorial: The Plant Holobiont Volume I: Microbiota as Part of the Holobiont; Challenges for Agriculture JOURNAL=Frontiers in Plant Science VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2021.799168 DOI=10.3389/fpls.2021.799168 ISSN=1664-462X