Effects of Engineered Nanomaterials on Plants Growth: An Overview

Figure 6

Effects of graphene (G) on accumulation of H₂O₂ in leaves tested by means of the ROS-sensitive dye DAB of red spinach, cabbage, and tomato seedlings. 21 days leaves treated with or without 1000 mgL⁻¹ graphene were utilized for all measurements. (a), (c), and (e) are cabbage, tomato, and red spinach leaves without graphene, respectively. (b), (d), and (f) are cabbage, tomato, and red spinach leaves with graphene (1000 mgL⁻¹), respectively. The brown staining shows the formation of a brown polymerization product when H₂O₂ reacts with DAB. (g) Effect of graphene (1000 mgL⁻¹) on the accumulation of H₂O₂ in treated leaves as measured utilizing DAB [28].

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