Cotton seedling plants adapted to cadmium stress by enhanced activities of protective enzymes L.T., Sun H.C., Chen J., Zhang Y.J., Wang X.D., Li D.X., Li C.D. (2016): Cotton seedling plants adapted to cadmium stress by enhanced activities of protective enzymes. Plant Soil Environ., 62: 80-85.
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Cotton (Gossypium hirsutum L.) is a global major crop with strong tolerance to abiotic stress, but its tolerance to cadmium (Cd) stress is unclear. The objective of this study was to determine the influence of Cd stress on the seedling growth and some physiological properties of cotton. Cotton seedlings with three fully expended leaves were treated with Cd at different concentrations (0, 25, 50 and 100 μmol/L), and seedling growth, chlorophyll (Chl) content, malonaldehyde (MDA) content, photosynthetic rate, superoxide dismutase (SOD) and peroxidase (POD) activity in the main-stem leaves were measured 5 days or 10 days after stress treatment. It was found that with the increase in the Cd concentration, the SOD and POD activity of the stressed seedlings displayed an increase first and then a decrease. The MDA content increased and the Chl decreased, which finally led to a decline in plant height and leaf area. The results suggest that cotton seedlings were adapted to low-concentration Cd stress by the increased protective enzyme activity, but over 50 μmol/L of Cd concentration would exert a significantly inhibitory effect on the photosynthetic properties and protective enzyme activity of the cotton leaves. Cotton plants can be adapted to low Cd stress by increasing the activity of the protective enzymes.

Aravind Parameswaran, Prasad Majeti Narasimha Vara (2003): Zinc alleviates cadmium-induced oxidative stress in Ceratophyllum demersum L.: a free floating freshwater macrophyte. Plant Physiology and Biochemistry, 41, 391-397
Chen Y., Li L., He Q.L., Chen J.H., Zhu S.J. (2014): Effects of cadmium stress on yield, fiber quality, and physiological traits of three upland cotton cultivars (lines). Cotton Science, 26: 521–530.
DI CAGNO R., GUIDI L., STEFANI A., SOLDATINI G. F. (1999): Effects of cadmium on growth of Helianthus annuus seedlings: physiological aspects. New Phytologist, 144, 65-71
Guo T.R., Chen L.P., Feng Q.F., Qi Z.W., Shen J.H. (2015): Effect of aluminum and cadmium treatments on the growth and antioxidant property of water spinach. Journal of Nuclear Agricultural Sciences, 29: 571–576.
He J.Y., Ren Y.F., Wang Y.Y., Li Z.J. (2011): Root morphological and physiological responses of rice seedlings with different tolerance to cadmium stress. Acta Ecologica Sinica, 31: 522–528.
Jiang C.M., Ying Y.P., Liu X., Wang Z.L. (2007): Response of flag leaf lipid peroxidation and protective enzyme activity of wheat cultivars with different heat tolerance to high temperature stress after anthesis. Acta Agronomica Sinica, 33: 143–148.
Kuboi T., Noguchi A., Yazaki J. (1986): Family-dependent cadmium accumulation characteristics in higher plants. Plant and Soil, 92, 405-415
Li H., Lian H.F., Liu S.Q., Yu X.H., Sun Y.L., Guo H.P. (2015): Effect of cadmium stress on physiological characteristics of garlic seedlings and the alleviation effects of exogenous calcium. Chinese Journal of Applied Ecology, 26: 1193–1198.
Li L., Chen J.H., He Q.L., Zhu S.J. (2012): Accumulation, transportation, and bioconcentration of cadmium in three upland cotton plants under cadmium stress. Cotton Science, 24: 535–540.
Liu J., Liao B.H., Zhou H., Zhang Y., Zeng M., Huang Y.X., Zeng Q.R. (2010): Main characteristics of physiological-ecological dynamics of soybean during the growth cycle under Cd stress. Acta Ecologica Sinica, 30: 333–340.
Liu L.T., Chen J., Sun H.C., Zhang Y.J., Li C.D. (2014): Effects of cadmium stress on growth and cadmium accumulation in cotton (Gossypium hirsutum L.) seedlings. Cotton Science, 26: 466–470.
Singh Shikha, Prasad Sheo Mohan (2015): IAA alleviates Cd toxicity on growth, photosynthesis and oxidative damages in eggplant seedlings. Plant Growth Regulation, 77, 87-98
Tian G.Z., Li H.F., Qiu W.F. (2001): Advances on research of plant peroxidases. Plant Science Journal, 19: 332–344.
Wang H.X., Guo J.Y., Xu W.H., Zhang H.B., Chen G.Q., Zhang X.J., Zhao J., Wang Z.Y. (2011): Response and zinc use efficiency of Chinese cabbage under zinc fertilization. Journal of Plant Nutrition and Fertilizer, 17: 154–159.
Zhang C.C., Chang J.T., Gao S.L., Zhao Q.Z. (2012): Effects of silicon on yield and physiological characteristics of rice plants under cadmium and zine stress. Journal of Nuclear Agricultural Sciences, 26: 936–941.
ZHANG Ying-Hua, YANG You-Ming, CAO Lian, HAO Yang-Fan, HUANG Jing, LI Jin-Peng, YAO De-Xiu, WANG Zhi-Min (2015): Effect of High Temperature on Photosynthetic Capability and Antioxidant Enzyme Activity of Flag Leaf and Non-leaf Organs in Wheat. Acta Agronomica Sinica, 41, 136-
Zhao Q.G., Zhou B.Z. (2002): Environmental quality and agricultural safety in Jiangsu Province. Soils, 34: 1–8.
Zhao S.J., Liu H.S., Dong X.C. (1998): Experimental Guidance of Plant Physiology Experiment. Beijing, Agriculture Press of China, 161–163.
Zou Q. (2000): The Experimental Guidance of Plant Physiology. Beijing, Agriculture Press of China, 102.
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