Journal
PLANT GROWTH REGULATION
Volume 57, Issue 2, Pages 185-192Publisher
SPRINGER
DOI: 10.1007/s10725-008-9335-y
Keywords
1-MCP; Antioxidant; Ethylene; Ethylene synthesis; Mango
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Funding
- 11th Five-Year Key Technologies R&D Program of China [2006BAD22B04, 2006BAD22B03]
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Mango (Mangifera indica L. cv. Tainong) fruits were harvested at the green-mature stage in Hainan and air-freighted to the laboratory at Peking. The fruits were treated with either 1 mu l l(-1) 1-MCP or 5 mu l l(-1) ethylene for 24 h and stored at 20A degrees C for up to 16 days. 1-MCP maintained fruit firmness, whereas exogenous ethylene decreased fruit firmness. Exogenous ethylene accelerated the increase in ethylene and 1-aminocyclopropane-1-carboxylate (ACC) oxidase, whereas 1-MCP reduced both. Exogenous ethylene stimulated and 1-MCP inhibited the production of H2O2 of mango fruit during storage. Ascorbic acid was maintained at a high concentration in 1-MCP-treated fruit but was low in ethylene-treated fruit. 1-MCP inhibited activities of antioxidant enzymes including catalase, superoxide dismutase and ascorbate peroxidase. These results suggest that 1-MCP could play a positive role in regulating the activated oxygen metabolism balance.
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