Effects of Exogenous Nitric Oxide on Oxidative Damage and Activities of Protective Enzymes of Cotton Seedling

doi:10.3969/j.issn.1000-7091.2013.04.029

Abstract

Abstract: Cotyledon full extension of the cotton seedling as material，in the 1 /4 Hoagland nutrient solution with different concentration of SNP(0，10，50，100，200 mol /L) processing cotton seedling，study of oxidative damage and activities of protective enzymes of exogenous nitric oxide on cotton seedling leaves and roots．The results show that: with the treatment of SNP， the content of MDA and the generation rate of O－ ₂ of cotton seedling leaves and roots increased significantly， the content of soluble protein of leaves decreased significantly，SOD and POD activity increased，while CAT activity decreased．The difference under 10－ 100 mol /L SNP processing were not remarkable between treatments．The difference of physiological indexes between treatments was priority performance in leaves． These results suggest that exogenous nitric oxide in certain concentration range inhibit cotton seedling growth．

Key words: Nitric oxide, Cotton seedling, Oxidative damage, Protective enzyme

CLC Number:

S562.01

LI Cui-fang, LIU Lian-tao, SUN Hong-chun, LI Cun-dong. Effects of Exogenous Nitric Oxide on Oxidative Damage and Activities of Protective Enzymes of Cotton Seedling[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(4): 158-162. doi: 10.3969/j.issn.1000-7091.2013.04.029.

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