Fig. 6
From: Silica nanoparticles protect rice against biotic and abiotic stresses

SiO2 NPs induce up-regulation of SA-responsive marker genes during infection of M. oryzae. RT-qPCR analysis of the gene expression of the SA-responsive genes OsPR1A A OsPR1B B OsPR5 C OsPR8 D OsPR10 E and OsPAD4 F in response to different concentrations and treatments of the wild-type rice CO39. Leaves and roots were pretreated 2 h before inoculation with M. oryzae conidia. Samples were collected 24 h after fungus infection. Error bars represent SD. *** stands for significant difference P < 0.001, ** stands for significant difference P < 0. 01, * stands for significant difference P < 0.05