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Effect of Hot Water Treatment on the Inhibition of Anthracnose, PG, PME Activity and PGIP Gene Expression in Harvested Papaya Fruits
Zhao Nan 1 #,Li Xueping 2 * #,Chen Weixin 1,Shi Jingying 3
1. College of Horticulture South China Agricultural University
2.South China Agricultural University
3.College of Food Science and Engineering Shandong Agricultural University
*Correspondence author
#Submitted by
Subject:
Funding: 教育部博士点基金,教育部重点项目(No.20050564013,204104)
Opened online:24 January 2009
Accepted by: none
Citation: Zhao Nan ,Li Xueping ,Chen Weixin .Effect of Hot Water Treatment on the Inhibition of Anthracnose, PG, PME Activity and PGIP Gene Expression in Harvested Papaya Fruits[OL]. [24 January 2009] http://en.paper.edu.cn/en_releasepaper/content/28308
 
 
The effect of hot water treatment on the inhibition of anthracnose, the activity of polygalacturonase (PG) and pectin methylesterase (PME), and polygalacturonase-inhibiting protein (PGIP) gene expression in harvested papaya fruits were studied. The incidence of anthracnose of harvested papaya fruits was reduced by appropriate hot water treatment. Immerging in hot water at 54 oC for 4 min showed an obvious effect on controlling postharvest decay in papaya fruits. The fruit ripening was found to be delayed, PG and PME activities were significantly inhibited, and PGIP gene expression was enhanced in hot water-treated papaya fruits. The results suggested that hot water treatment might induce the resistance of papaya fruits to anthracnose disease and extend the storage life.
Keywords:papaya;heat treatment;anthracnose;PG;PME;PGIP gene
 
 
 

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