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Effects of exogenous salicylic acid on the resistance of Gracilaria lichevoides to chilling injury

Yihe Jia

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Abstract

The effect of salicylic acid on the resistance of Gracilaria lichevoides to chilling injury was studied through in vitro physiological experiments.It was found that 0.5 mmol/L SA could reduce the content of MDA(a product of membrane lipid peroxidation) and relative conductivity and enhance the proline content,special growth rate and the activities of SOD,POD,and CAT,significantly.At 6～8℃,the treatment group(0.5 mmol/L SA) could survived longer than the untreated group,and the special growth rate was positive.So,0.5 mmol/L SA can enhance the chilling resistance of G.lichevoides.

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What this paper is about

The effect of salicylic acid on the resistance of Gracilaria lichevoides to chilling injury was studied through in vitro physiological experiments.It was found that 0.5 mmol/L SA could reduce the content of MDA(a product of membrane lipid peroxidation) and relative conductivity and enhance the proline content,special growth rate and the activities of SOD,POD,and CAT,significantly.At 6～8℃,the treatment group(0.5 mmol/L SA) could survived longer than the untreated group,and the special growth rate was positive.So,0.5 mmol/L SA can enhance the chilling resistance of G.lichevoides.

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Available abstract

The effect of salicylic acid on the resistance of Gracilaria lichevoides to chilling injury was studied through in vitro physiological experiments.It was found that 0.5 mmol/L SA could reduce the content of MDA(a product of membrane lipid peroxidation) and relative conductivity and enhance the proline content,special growth rate and the activities of SOD,POD,and CAT,significantly.At 6～8℃,the treatment group(0.5 mmol/L SA) could survived longer than the untreated group,and the special growth rate was positive.So,0.5 mmol/L SA can enhance the chilling resistance of G.lichevoides.

Key concepts: Salicylic acid, Proline, Point of delivery, Lipid peroxidation, Chemistry, Botany, Horticulture, Biology

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