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2014•Journal of Nuclear Agricultural SciencesRequires access

Effect of MeJA on Storage Quality and Disease-resistant Enzymes of Blueberries

XU Qing-qin

Open publisher page 2 citations

Abstract

This paper investigated the changes of quality and enzyme activities in blueberries fumigated with different concentrations( 0、10、20、30 μmol·L- 1) of methyl jasmonate( MeJA). The results showed that MeJA treatments reduced decay and maintained fruit firmness,TA and TSS during storage at 5℃. MeJA treatments also enhanced the activities of phenylalanine ammonia lyase( PAL),peroxidase( POD) and polyphenol oxidase( PPO). Furthermore,MeJA had a potential on enhancing activities of disease-resistant enzymes and effectively improved disease resistance of blueberries. The concentration of 20 μmol·L- 1MeJA was found to be significantly effective than all the other treatments,therefore,this concentration was designated as an optimum MeJA treatment for maintaining the storage quality of blueberries.

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What this paper is about

This paper investigated the changes of quality and enzyme activities in blueberries fumigated with different concentrations( 0、10、20、30 μmol·L- 1) of methyl jasmonate( MeJA). The results showed that MeJA treatments reduced decay and maintained fruit firmness,TA and TSS during storage at 5℃. MeJA treatments also enhanced the activities of phenylalanine ammonia lyase( PAL),peroxidase( POD) and polyphenol oxidase( PPO). Furthermore,MeJA had a potential on enhancing activities of disease-resistant enzymes and effectively improved disease resistance of blueberries. The concentration of 20 μmol·L- 1MeJA was found to be significantly effective than all the other treatments,therefore,this concentration was designated as an optimum MeJA treatment for maintaining the storage quality of blueberries.

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Available abstract

This paper investigated the changes of quality and enzyme activities in blueberries fumigated with different concentrations( 0、10、20、30 μmol·L- 1) of methyl jasmonate( MeJA). The results showed that MeJA treatments reduced decay and maintained fruit firmness,TA and TSS during storage at 5℃. MeJA treatments also enhanced the activities of phenylalanine ammonia lyase( PAL),peroxidase( POD) and polyphenol oxidase( PPO). Furthermore,MeJA had a potential on enhancing activities of disease-resistant enzymes and effectively improved disease resistance of blueberries. The concentration of 20 μmol·L- 1MeJA was found to be significantly effective than all the other treatments,therefore,this concentration was designated as an optimum MeJA treatment for maintaining the storage quality of blueberries.

Key concepts: Methyl jasmonate, Polyphenol oxidase, Phenylalanine ammonia-lyase, Peroxidase, Chemistry, Point of delivery, Catechol oxidase, Food science

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