AUTHOR=ObornĂ­k Miroslav , Dorrell Richard G. , Tikhonenkov Denis V. TITLE=Editorial: Mixotrophic, Secondary Heterotrophic, and Parasitic Algae JOURNAL=Frontiers in Plant Science VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2021.798555 DOI=10.3389/fpls.2021.798555 ISSN=1664-462X