Fig. 2.

Elevated copper (Cu) negatively impacts fresh weight of shoots and roots of Arabidopsis thaliana. Plants were grown under hydroponic conditions for up to 72 h or 15 days (15d). Mean (+/– SEM) are shown (n = 3). For the Cu treatments for 72 h different lowercase letters indicate mean values are significantly different among the [Cu] (0.16, 5.0, 10.0 and 20.0 μM) by Tukey’s test (p < 0.05). For the Cu treatments for 15 days different uppercase letters indicate mean values are significantly different between the [Cu] (0.16 and 5.0 μM) by Tukey’s test (p < 0.05). White line in the image represent 2 cm.