TY - JOUR
T1 - Zinc oxide nanoparticle-mediated changes in photosynthetic efficiency and antioxidant system of tomato plants
AU - Faizan, M.
AU - Faraz, A.
AU - Yusuf, M.
AU - Khan, S. T.
AU - Hayat, S.
N1 - Publisher Copyright:
© 2018, The Institute of Experimental Botany.
PY - 2018/6/1
Y1 - 2018/6/1
N2 - The present study was carried out to assess the role of zinc oxide nanoparticles (ZnO-NPs) in tomato plants on growth, photosynthetic efficiency, and antioxidant system. At 20-d stage of growth, roots of tomato plants were dipped into 0, 2, 4, 8, or 16 mg(ZnO-NPs) L–1 for 15, 30, and 45 min and then seedlings were transplanted in their respective cups and allowed to grow under natural environmental conditions. At 45-d stage of growth, the ZnO-NPs treatments significantly increased growth, photosynthetic efficiency together with activities of carbonic anhydrase and antioxidant systems in a concentration- and duration-dependent manner. Moreover, the treatment by 8 mg(ZnO-NPs) L–1 for 30 min proved to be the most effective and resulted in maximum activities of antioxidant enzymes, proline accumulation and the photosynthetic rate. We concluded that presence of ZnO-NPs improved the antioxidant systems and speeded up proline accumulation that could provide stability to plants and improved photosynthetic efficiency.
AB - The present study was carried out to assess the role of zinc oxide nanoparticles (ZnO-NPs) in tomato plants on growth, photosynthetic efficiency, and antioxidant system. At 20-d stage of growth, roots of tomato plants were dipped into 0, 2, 4, 8, or 16 mg(ZnO-NPs) L–1 for 15, 30, and 45 min and then seedlings were transplanted in their respective cups and allowed to grow under natural environmental conditions. At 45-d stage of growth, the ZnO-NPs treatments significantly increased growth, photosynthetic efficiency together with activities of carbonic anhydrase and antioxidant systems in a concentration- and duration-dependent manner. Moreover, the treatment by 8 mg(ZnO-NPs) L–1 for 30 min proved to be the most effective and resulted in maximum activities of antioxidant enzymes, proline accumulation and the photosynthetic rate. We concluded that presence of ZnO-NPs improved the antioxidant systems and speeded up proline accumulation that could provide stability to plants and improved photosynthetic efficiency.
KW - antioxidant enzyme
KW - gas exchange
KW - growth
KW - micronutrient
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U2 - 10.1007/s11099-017-0717-0
DO - 10.1007/s11099-017-0717-0
M3 - Article
AN - SCOPUS:85015620891
SN - 0300-3604
VL - 56
SP - 678
EP - 686
JO - Photosynthetica
JF - Photosynthetica
IS - 2
ER -