Fig. 3

Light microscopy photographs showing transverse sections of soybean leaf tissue; (A, B) untreated control plant; (C, D) Plant treated with TiO2 NPs; (E, F) 150 mM NaCl treated plant; (G, H) 150mM NaCl treated plant and sprayed with TiO2 NPs. UE—upper epidermis, LE— lower epidermis, PP—palisade parenchyma, SP—spongy parenchyma