Fig.2

Phenotypes of 28-day old water spinach. A Root fresh weight was significantly lower and B the length of primary root was significantly shorter in L-DOPA-treated plants. C The number of lateral roots, D shoot fresh weight and E number of leaves were not significantly different between control plants and treated plants. F Three tubes containing ES growth medium without treatment (left), and after 4 days of treatment with either L-DOPA dissolved in 0.1 N HCl (middle) or in 1 M KOH (right). The medium containing KOH-dissolved L-DOPA was noticeably darker and contained a black precipitate. Error bars represent the standard deviation (Student’s t-test. * P < 0.05, n = 8)