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2006•Xi'nan Nongye Daxue xuebaoRequires access

EFFECTS OF SALICYLIC ACID ON ANTIOXIDANT ENZYMES IN RICE SEEDLINGS UNDER CHILLING STRESS

Rui Zhang, MI Qing-shan

Open publisher page 1 citations

Abstract

Pretreatment of rice seedlings with salicylic acid(SA) spray at 0.5 mmol/L decreased the concentrations of H_2O_2 and MDA and the rate of superoxide anion radicals in them under chilling stress.As compared with the chilling control,SOD(superoxide dismutase),POD(peroxidase) and CAT(catalase) activities increased while ADX(ascorbate peroxidase) activity decreased in the SA pretreatments under chilling stress.It is concluded that pretreatment of rice seedlings with SA at normal growth temperature may increase the activities of antioxidant enzymes,thus increasing their chilling tolerance.

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What this paper is about

Pretreatment of rice seedlings with salicylic acid(SA) spray at 0.5 mmol/L decreased the concentrations of H_2O_2 and MDA and the rate of superoxide anion radicals in them under chilling stress.As compared with the chilling control,SOD(superoxide dismutase),POD(peroxidase) and CAT(catalase) activities increased while ADX(ascorbate peroxidase) activity decreased in the SA pretreatments under chilling stress.It is concluded that pretreatment of rice seedlings with SA at normal growth temperature may increase the activities of antioxidant enzymes,thus increasing their chilling tolerance.

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Available abstract

Pretreatment of rice seedlings with salicylic acid(SA) spray at 0.5 mmol/L decreased the concentrations of H_2O_2 and MDA and the rate of superoxide anion radicals in them under chilling stress.As compared with the chilling control,SOD(superoxide dismutase),POD(peroxidase) and CAT(catalase) activities increased while ADX(ascorbate peroxidase) activity decreased in the SA pretreatments under chilling stress.It is concluded that pretreatment of rice seedlings with SA at normal growth temperature may increase the activities of antioxidant enzymes,thus increasing their chilling tolerance.

Key concepts: Salicylic acid, Catalase, Superoxide dismutase, Peroxidase, Antioxidant, Chemistry, Point of delivery, Enzyme

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EFFECTS OF SALICYLIC ACID ON ANTIOXIDANT ENZYMES IN RICE SEEDLINGS UNDER CHILLING STRESS — Research Paper | ScholarLens