AUTHOR=Vélez-Bermúdez Isabel Cristina , Schmidt Wolfgang TITLE=pH sensors in the plant apoplast: a sine qua non of phenotypic plasticity JOURNAL=Frontiers in Plant Science VOLUME=14 YEAR=2023 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2023.1227279 DOI=10.3389/fpls.2023.1227279 ISSN=1664-462X