Positive effect of calcium on oxidative damage in maize seedling under chilling stress
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DOI:10.7606/j.issn.1000-7601.2014.01.025
Key Words: maize seedling  calcium  chilling stress  oxidative damage
Author NameAffiliation
WANG Fang1, WANG Dan-dan1, Zhao Juan1, MA Pei1, SHI Yong-yan2, WANG Han-ning1 (1.甘肃省干旱生境作物学重点实验室甘肃农业大学农学院 甘肃 兰州 730070 2.甘肃省白银市农业科学研究所 甘肃 白银 730900) 
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Abstract:
      The effect of calcium at different concentrations (0, 5, 10, 15 mmol·L-1 and 20 mmol·L-1) on physiological characteristics of maize seedling leaves under chilling stress was studied. The results showed that compared with the CK, the growth of maize seedling were in hibited and the accumulation of soluble protein and soluble sugar content were maintained, the antioxidant enzymes activities and proline content were reduced, whereas MDA content and membrane permeability were increased under chilling stress. The Ca2+ treatment with the concentration ranging from 5 to 10 mmol·L-1 showed mitigating effect of maintaining membrane permeability and the activities of SOD, POD and CAT, and promoting the accumulation of proline, soluble sugar and soluble protein content in maize seedling. In addition, concentration of 10 mmol·L-1 Ca2+ showed the largest positive influence on seedling growth.