EFFECT OF SILICON ON INCREASING PLANT TOLERANCE TO OXIDATIVE STRESS BY POWDERY MILDEW IN PUMPKIN (CUCURBITA PEPO, VAR. STYRIACA)

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MOHAMMADKHANI A.; MOHAGHEGH P.; FADAEI TEHRANI A.A.

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Journal: SOIL AND PLANT INTERACTIONS (JOURNAL OF SCIENCE AND TECHNOLOGY OF GREENHOUSE CULTURE) Year:2016 | Volume:7 | Issue:27 Page(s): 53-61

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Title

EFFECT OF SILICON ON INCREASING PLANT TOLERANCE TO OXIDATIVE STRESS BY POWDERY MILDEW IN PUMPKIN (CUCURBITA PEPO, VAR. STYRIACA)

Author(s)

MOHAMMADKHANI A. | MOHAGHEGH P. | FADAEI TEHRANI A.A. | Issue Writer Certificate

Keywords

BIOTIC STRESSESQ2

ANTIOXIDANTS ACTIVITYQ2

CELL MEMBRANEQ2

LIPID PEROXIDATIONQ2

Abstract

Silicon (Si) can protect some plants from biotic and aBIOTIC STRESSES. In this research, effects of three exogenous Si levels (0, 0.85 and 1.7 mM) on growth, LIPID PEROXIDATION, lipoxygenase activity, proline content, H2O2 accumulation, and activity of non-enzymatic and enzymatic antioxidants (catalase and ascorbate peroxidase) under powdery mildew disease stress by Sphaerotheca fuliginea on pumpkin (Cucurbita pepo, var. styriaca), under hydroponic conditions, were investigated. The results revealed that effect of Si in reduction of powdery mildew was significant (P£0.05) and application of 1.7 mM of this element decreased the severity of disease symptoms up to 35%. Increasing the Si concentration in the nutrients solution elevated the amount of this element in roots and shoots of pumpkin plants. The concentration of H2O2, LIPID PEROXIDATION and lipoxygenase activity were increased by disease stress. But these parameters were decreased with application of Si. The activity of enzymatic and non-enzymatic antioxidants was significantly enhanced (P£0.05) by the application of Si. Based on the present work, it can be concluded that concentration level of 1.7 mM Si was more effective than the other two treatments in alleviating disease stress, which could be related to the effect of this element on prevention of membrane lipid-oxidation.

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APA: Copy

MOHAMMADKHANI, A., MOHAGHEGH, P., & FADAEI TEHRANI, A.A.. (2016). EFFECT OF SILICON ON INCREASING PLANT TOLERANCE TO OXIDATIVE STRESS BY POWDERY MILDEW IN PUMPKIN (CUCURBITA PEPO, VAR. STYRIACA). SOIL AND PLANT INTERACTIONS (JOURNAL OF SCIENCE AND TECHNOLOGY OF GREENHOUSE CULTURE), 7(27), 53-61. SID. https://sid.ir/paper/226346/en

Vancouver: Copy

MOHAMMADKHANI A., MOHAGHEGH P., FADAEI TEHRANI A.A.. EFFECT OF SILICON ON INCREASING PLANT TOLERANCE TO OXIDATIVE STRESS BY POWDERY MILDEW IN PUMPKIN (CUCURBITA PEPO, VAR. STYRIACA). SOIL AND PLANT INTERACTIONS (JOURNAL OF SCIENCE AND TECHNOLOGY OF GREENHOUSE CULTURE)[Internet]. 2016;7(27):53-61. Available from: https://sid.ir/paper/226346/en

IEEE: Copy

A. MOHAMMADKHANI, P. MOHAGHEGH, and A.A. FADAEI TEHRANI, “EFFECT OF SILICON ON INCREASING PLANT TOLERANCE TO OXIDATIVE STRESS BY POWDERY MILDEW IN PUMPKIN (CUCURBITA PEPO, VAR. STYRIACA),” SOIL AND PLANT INTERACTIONS (JOURNAL OF SCIENCE AND TECHNOLOGY OF GREENHOUSE CULTURE), vol. 7, no. 27, pp. 53–61, 2016, [Online]. Available: https://sid.ir/paper/226346/en

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