Readers should cite both the Bio-protocol preprint and the original research article where this protocol was used:

Miao, R(2021). HPTS staining and confocal imaging. Bio-protocol Preprint. bio-protocol.org/prep953.
Miao, R., Yuan, W., Wang, Y., Garcia-Maquilon, I., Dang, X., Li, Y., Zhang, J., Zhu, Y., Rodriguez, P. L. and Xu, W.(2021). Low ABA concentration promotes root growth and hydrotropism through relief of ABA INSENSITIVE 1-mediated inhibition of plasma membrane H+-ATPase 2. Science Advances 7(12). DOI: 10.1126/sciadv.abd4113