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Effects of salicylic acid on the activities of antioxidant systems in lily plants under high temperature stress

Mingfang Yi

Open publisher page 4 citations

Abstract

Effects of exogenous application of salicylic acid(SA) on the antioxidant system of lily plants(Lilium longiflorum cv.'Reizah 1')under high temperature stress(47 ℃ for 24 h) were studied.The results showed that the mortality,relative electrical conductivity and MDA content of plants pretreated with 0.5 mmol/L SA were lower than the control.These were concomitant with higher activities of SOD,POD,GR and content of GSH.In contrast,the CAT activity and AsA content,as well as APX activity decreased 3 hours after exposure to high temperature stress.The result suggests that pretreatment with SA may increase the heat tolerance of lily by enhancing the activities of antioxidant systems.

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What this paper is about

Effects of exogenous application of salicylic acid(SA) on the antioxidant system of lily plants(Lilium longiflorum cv.'Reizah 1')under high temperature stress(47 ℃ for 24 h) were studied.The results showed that the mortality,relative electrical conductivity and MDA content of plants pretreated with 0.5 mmol/L SA were lower than the control.These were concomitant with higher activities of SOD,POD,GR and content of GSH.In contrast,the CAT activity and AsA content,as well as APX activity decreased 3 hours after exposure to high temperature stress.The result suggests that pretreatment with SA may increase the heat tolerance of lily by enhancing the activities of antioxidant systems.

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Available abstract

Effects of exogenous application of salicylic acid(SA) on the antioxidant system of lily plants(Lilium longiflorum cv.'Reizah 1')under high temperature stress(47 ℃ for 24 h) were studied.The results showed that the mortality,relative electrical conductivity and MDA content of plants pretreated with 0.5 mmol/L SA were lower than the control.These were concomitant with higher activities of SOD,POD,GR and content of GSH.In contrast,the CAT activity and AsA content,as well as APX activity decreased 3 hours after exposure to high temperature stress.The result suggests that pretreatment with SA may increase the heat tolerance of lily by enhancing the activities of antioxidant systems.

Key concepts: Salicylic acid, APX, Antioxidant, Lilium, Point of delivery, Horticulture, Chemistry, Botany

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