Correction to: Nature Plants https://doi.org/10.1038/s41477-020-0621-7, published online 30 March 2020.

In the Supplementary Information PDF originally published with this Article, the K+ concentration values along the x axis of Supplementary Fig. 15b were mislabelled; they should have read ‘10’, ‘40’, ‘60’, ‘100’ instead of ‘100’, ‘60’, ‘40’, ‘10’. This has now been corrected and the updated Supplementary Information PDF is available online.