บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Interaction of ethylene and alternative respiration in climacteric and non-climacteric fruits

Padmavathi Ch.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004. page 7

2004

บทคัดย่อ

Interaction of ethylene and alternative respiration in climacteric and non-climacteric fruits   Ethylene is considered to be the agent that triggers climacteric activity and fruit ripening.Ethylene stimulates respiration by stunting the flow of electrons in respiratory electron transter chain from the conventional cytochrome to an alternate cyanide resistant oxidase.Even though the evidence seems compelling that respiratory stimulation by ethylene calls for the generation of cyanide-resistant electron transport, the degree of participation of latter in ethylene-stimulated respiration is an open question.The alternative pathway of respiration in higher a plant mitochondria was first a thermogenic curiosity observed during anthesis and recognized as part of plants ability to regulate its energy / carbon balance responses to a changing environment.Inspite of its wide occurrence, role in fruit ripening and senescence was not studied in detail.Hence, the present studies were taken up to study the interaction of Ethylene and alternative respiration in climacteric and non-climacteric fruits.

To study the interaction of ethylene with alternative respiration during ripening and senescence of climacteric fruits and senescence of climacteric fruits and non-climacteric fruits experiments were conducted at ambient and low temperatures.Banana, atypical climacteric fruit, and grape, a nom-climacteric fruit was selected for experimentation.Alternative oxidase inhibitors (Propylgallate) and polyamine (Spermine) were the treatments.At regular intervals ethylene levels and alternative respiration were monitored.Propyl gallate and spermine improved shelf life by delayed respiratory climacteric (in banana), reduced alternative respiration, and reduced ethylene.

The results suggest the there is an interaction of ethylene and alternative respiration during ripening and senescence of climacteric fruits and senescence of non-climacteric fruits.