The effect of salicylic acid and chelated magnesium sulfate on amount of α-tocopherol and some physiological characteristics of pear (cv. Louise Bonne de Jersey)

Document Type : Full Paper


1 Former M.Sc. Student, Faculty of Agriculture, Zanjan University, Zanjan, Iran

2 Professor, Faculty of Agriculture, Zanjan University, Zanjan, Iran

3 Associate Professor, Horticulture Crops Research Department, Qazvin Agricultural and Natural Resources Research and Education Center, AREEO, Qazvin, Iran


The antioxidants are anti-oxidative system in higher plants and therefore their endogenous stimulation or exogenous application of them can be effective in overcoming on stresses. These combinations are included the kinds of enzymatic and non-enzymatic materials such as: vitamins, pigments and so on. In this present experiment, the influence of salicylic acid and chelatedmagnesium sulfate was studied on stimulatory or inhibitory effects on different antioxidants production in the pears' leaves. The experiment was conducted in the ecological conditions of Qazvin province in RCBD in 2013 and plant materials were selected pear trees belonging to Louise Bonne. The studied characteristics in this research include antioxidants of a-tocopherol, carotenoid, chlorophylls a, b and total. The results indicated that salisylic acid and chelatedmagnesium sulfate significantly affected on the content of a-tocopherol antioxidant, chlorophyll and carotenoid in the leaf pear. There was a highly significant difference (P≤ 0.01) among treatments. The changes for chlorophyll pigment were between 1.03 to 6.27 mg/g, for carotenoid between 0.06 to 1.985 mg/g and for a-tocopherol between 0.03 to 2.30 ppm. The LSD indicated that the highest amount of a-tocopherol compound was obtained in the combination of salicylic acid (0.5 g) and chelatedmagnesium sulfate (0.7 g) treatment. It can be interpreted the positive role of the aforementioned treatment in producing stimulation of this antioxidant.


Main Subjects

  1. Aarabi, M. H. & Jalali, M. (2003). Simultaneous measurement of vitamins A and E with the way of Reversed Phase HPLC. Feyz (Journal of Kashan University of Medical Sciences), 27: 2-8. (In Farsi)
  2. Al-Nabulsi, Y. A., Al-Jasim, A. A. & Al-Taahir, O. A. (1994). Effect of saline drainage water and nitrogen fertilization on kernel yield, vegetative growth and nitrogen and chlorophyll content of Hassawi rice. Arid Soil Research, 8, 207-125.
  3. Arnon, A. N. (1967). Method of extraction of chlorophyll in the plants. Agronomy, 23, 112-121.
  4. Bergmuller, E., Porfirova, S. & Dormann, P. (2003). Characterization of an Arabidopsis mutant deficient in γ-tocopherol methyltransferase. Plant Molecular Biology, 52, 1181-1190.
  5. Blokhin, O., Virolainen, E. & Fagerstedt, K. (2003). Antioxidant oxidative damage and oxygen deprivation stress. Annual Review of Botany, 91, 179-194.
  6. Botsoglou, N., Fletouris, D., Psomas, I. & Mantis, A. (1998). Rapid gas chromatographic method for simultaneous determination of cholesterol and tocopherol in eggs. Journal of AOAC International, 8, 1177-1183.
  7. Drolet, G., Dumbroff, E. B., Legg, R. & Thompson, J. E. (1986). Radical scavenging properties of polyamines. Phytochemistry, 25, 367-371.
  8. Eraslan, F., Inal, A., Pilbeam, D. J. & Gunes, A. (2008). Interactive effects of salicylic acid and silicon on oxidative damage and antioxidant activity in spinach (Spinacia oleracea L. CV. Matador) grown under boron toxicity and salinity. Plant Growth Regulation, 55, 207-219.
  9. Fang, Y. Z., Yang, S. & Wu, G. (2002). Free radicals, antioxidants, and nutrition. Nutrition, 18, 872-879.
  10. Ghorbani, H. & Ladan Moghadam, A. (2005). Introduction to oxidative stresses and plant strains. Davavin Publication Institute. Iran. 128 p. (in Farsi)
  11. Hayat, S. & Ahmad, A. (2007). Salicylic acid: a plant hormone. Springer, 410 pp.
  12. Hayat, S., Ali, B. & Ahmad, A. (2007). Salicylic acid: biosynthesis, metabolism and physiological role in plants. In: Hayat, S. & Ahmad, A. (Ed), Salicylic Acid-A Plant Hormone. (Pp.1–14.) Springer.
  13. Kurk, j., Hollander-Czytko, H., Oett meier, W. & Trebst, A. (2005). Tocopherol as singlet oxygen scavenger in photosystem II. Plant Physiology, 162, 749-757.
  14. Loggini, B., Scartazza, A., Brugonli, E. & Navari-Izzo, F. (1999). Antioxidative defense system, pigment composition, and photosynthetic efficiency in two wheat cultivars subjected to drought. Plant Physiology, 119, 1091-1099.
  15. Matringe, M., Ksas, B., Rey, P. & Havaux, M. (2008). Tocotrienols, the unsaturated forms of vitamin E, can function as antioxidants and lipid protectors in tobacco leaves. Plant Physiology, 147, 764-778.
  16. Mazaheri Tirani, M., Kalantari, Kh. M., & Hasibi, N. (2008). The study of the interactive effects of ethylene and salicylic acid on induction of oxidative stress and the mechanisms of tolerance in Brassica napus L. Iran Journal of Biology, 21(3), 421-432. (in Farsi)
  17. Moharekar, S. T., Lokhande, S. D., Hara, T., Tanaka, R., Tanaka, A. & Chavan, P. D. (2003). Effect of salicylic acid on chlorophyll and carotenoid contents of wheat and moong seedlings. Photosynthetica, 41, 315-317.
  18. Munne- Bosch, S., Schwarz, K. & Alegre, L. (1999). Enhanced formation of α-tocopherol and highly oxidized alienate diterpene in water-stressed rosemary plants. Plant Physiology, 121, 1047-1052.
  19. Nemeth, M., Janda, T., Horvath, E., Paldi, E. & Szalai, G. (2002). Exogenous salicylic acid increases polyamine content but may decrease drought tolerance in maize. Plant Science, 162, 569-574.
  20. Rock, E., Astier, C. & Lab, C. (1995). Dietary magnesium deficiencies in rats enhance free radical production in skeletal muscle. Nutrition, 128, 1205.
  21. Sairam, R. K., Deshmukh, P. S. & Saxena, D. C. (1998). Role of antioxidant systems in wheat genotype tolerance to water stress. Plant Biology, 41(3), 387-394.
  22. Sies, H. (1999). Glutathione and its role in cellular functions. Free Radical Biology and Medicine. 27, 916.
  23. Taiz, L. & Zeiger, E. (1999). Plant Physiology (5th ed.). Translate: Kafee M., Lahootee M., Zand E., Shareefee H. R. & Goldanee M. Publications of Mashhad University Jihad. 456 pp. (in Farsi)