FOOD SCIENCE ›› 2012, Vol. 33 ›› Issue (8): 296-300.doi: 10.7506/spkx1002-6630-201208065

• Packaging & Storage • Previous Articles     Next Articles

Effect of System-2 Ethylene on Antioxidant Enzyme Activities in Cold Resistance Process of Tomato Fruits

LU . . Sheng-nan1，ZHAO Rui-rui1，SHEN Lin1，ZHAO Dan-ying3，SHENG Ji-ping1,2,*   

  1. (1. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China； 2. School of Agricultural Economics and Rural Development, Renmin University of China, Beijing 100872, China； 3. Beijing Xicheng District Center for Disease Control and Prevention, Beijing 100011, China)
  • Online:2012-04-25 Published:2012-03-31

RichHTML

0

PDF (PC)

128

Abstract: To analyze the effect of system-2 ethylene on the activities of catalase (CAT), ascorbate peroxidase (APX), peroxidase (POD) and superoxide dismutase (SOD) during exposure to cold stress, anti-sense ACS2, wild-type Lichun and ethephon-treated anti-sense ACS2 tomato fruits were used to the models of non-system-2 ethylene synthesis, normal system-2 ethylene synthesis and compensative system-2 ethylene synthesis, respectively. It was indicated that wild-type Lichun and ethephon-treated anti-sense ACS2 tomato fruits decreased chilling injury index, inhibited the increase of electrolyte leakage and increased the average activities of CAT, APX and SOD compared with native anti-sense ACS2 tomato fruits. The increase of POD activity was inhibited in wild-type Lichun but induced in ethephon-treated anti-sense ACS2. From these results, it can be concluded that system-2 ethylene can improve the cold resistance of tomato during exposure to cold stress by increasing CAT, APX and SOD activities and regulating POD activity.

Key words: ethylene, antioxidant enzymes, oxidative stress, cold resistance, tomato

CLC Number: