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Response of growth and antioxidant enzymes to osmotic stress in two different wheat (Triticum aestivum L.) cultivars seedlings

Author

Listed:
  • G.Q. Wu

    (School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, P.R. China)

  • L.N. Zhang

    (School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, P.R. China)

  • Y.Y. Wang

    (School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, P.R. China)

Abstract

To investigate the responses of growth and antioxidant enzymes to osmotic stress in two different wheat cultivars, one drought tolerant (Heshangtou, HST) and the other drought sensitive (Longchun 15, LC15), 15-day-old wheat seedlings were exposed to osmotic stress of -0.25, -0.50, and -0.75 MPa for 2 days. It is found that osmotic stress decreased shoot length in both wheat cultivars, whereas to a lesser degree in HST than in LC15. The contents of malondialdehyde (MDA) and the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) of shoot in both wheat cultivars were increased by osmotic stress. It is clear that MDA contents increased less in the more drought tolerant cultivar HST than in drought sensitive one LC15. On the contrary, POD and CAT activities increased more in HST than LC15 under osmotic stress. As the activity of SOD, however, no significant differences were found between HST and LC15. These results suggest that wheat cultivar HST has higher activities of antioxidant enzymes such as POD and CAT to cope with oxidative damage caused by osmotic stress compared to sensitive LC15.

Suggested Citation

  • G.Q. Wu & L.N. Zhang & Y.Y. Wang, 2012. "Response of growth and antioxidant enzymes to osmotic stress in two different wheat (Triticum aestivum L.) cultivars seedlings," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 58(12), pages 534-539.
    • Handle: RePEc:caa:jnlpse:v:58:y:2012:i:12:id:373-2012-pse
    DOI: 10.17221/373/2012-PSE
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    References listed on IDEAS

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    1. W.M. Bhutta, 2011. "Antioxidant activity of enzymatic system of two different wheat (Triticum aestivum L.) cultivars growing under salt stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 57(3), pages 101-107.
    2. Z.B. Qiu & Q. Li & Z.Z. Bi & M. Yue, 2011. "Hydrogen peroxide acts as a signal molecule in CO2 laser pretreatment-induced osmotic tolerance in wheat seedling," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 57(9), pages 403-408.
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    Cited by:

    1. D.D. Wei & D. Cheng & W.B. Liu & T. Liu & X.H. Yang & Y.H. Zheng, 2015. "Adequate potassium application enhances salt tolerance of moderate-halophyte Sophora alopecuroides," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 61(8), pages 364-370.
    2. M. Krzyżaniak & J. Lemanowicz, 2013. "Enzymatic activity of the Kuyavia Mollic Gleysols (Poland) against their chemical properties," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 59(8), pages 359-365.
    3. G.-Q. Wu & R.-J. Feng & Q.-Z. Shui, 2016. "Effect of osmotic stress on growth and osmolytes accumulation in sugar beet (Beta vulgaris L.) plants," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 62(4), pages 189-194.
    4. Jabeen Zahra & Hussain Nazim & Irshad Faiza & Jianbin Zeng & Ayesha Tahir & Guoping Zhang, 2020. "Physiological and antioxidant responses of cultivated and wild barley under salt stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 66(7), pages 334-344.

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