1-MCP and Chilling-Induced Ethylene Biosynthesis in Apple Fruit
Tian, MS., Prakash, S., Zhang, N., and Ross, GS
The Horticulture and Food Research Institute of New Zealand Ltd., Mt Albert Research Center, Private Bag 92 169, Auckland NZ 2Department of Microbiology, Massey University, Palmerston North, NZ
2002
บทคัดย่อ
In this study, we investigated whether chilling induces ethylene synthesis in Braeburn apple during cool O2 - O2 storage and subsequent warming O2 . O2 We then used O2 1- O2 MCP O2 (1- O2 methylcyclopropene O2 ) O2 as a tool to investigate whether chilling O2 - O2 induced ethylene is regulated by the ethylene response pathway O2 . O2 Results showed that a stimulation of ethylene synthesis in Braeburn apple during subsequent warming after chilling O2 . O2 This induction was correlated with increases in expression of genes for ACC synthase O2 ( O2 ACS O2 ) O2 and ACC oxidase O2 ( O2 ACO O2 ). O2 The stimulatory effects depended on the length of the cooling period O2 . 1- O2 MCP strongly inhibited ethylene biosynthesis in fruit stored at O2 20 O2 ° O2 C and O2 0 O2 ° O2 CO2 . O2 This inhibitory effect can be partially recovered in fruit stored at O2 0 O2 ° O2 C, but not at O2 20 O2 ° O2 CO2 . O2 Therefore, the chilling O2 - O2 induced ethylene rise was dependent on the ethylene biosynthetic pathway found by CO2 . O2 Yang O2 . O2 O2