AUTHOR=Valderrama Raquel , Chaki Mounira , Begara-Morales Juan Carlos , Petrivalský Marek , Barroso Juan B. TITLE=Editorial: Nitric Oxide in Plants JOURNAL=Frontiers in Plant Science VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2021.705157 DOI=10.3389/fpls.2021.705157 ISSN=1664-462X