Avocado Fruit Development and Ripening Physiology
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منابع مشابه
Regulation of climacteric respiration in ripening avocado fruit.
Ripening of avocado fruit is associated with a dramatic increase in respiration. In vivo(31)P nuclear magnetic resonance spectroscopy revealed large increases in ATP levels accompanying the increase in respiration. Both glycolytic enzymes, phosphofructokinase, and pyrophosphate: fructose-6-phosphate phosphotransferase were present in avocado fruit with the latter activity being highly stimulate...
متن کاملAcid Phosphatase Development during Ripening of Avocado.
The activity and subcellular distribution of acid phosphatase were assayed during ethylene-induced ripening of whole fruit or thick slices of avocado (Persea americana Mill. var. Fuerte and Hass). The activity increased up to 30-fold during ripening in both the supernatant fraction and the Triton X-100 extract of the precipitate of a 30,000g centrifugation of tissue homogenates from whole fruit...
متن کاملHydrolytic Enzyme Activities and Protein Pattern of Avocado Fruit Ripened in Air and in Low Oxygen, with and without Ethylene.
The effect of 2.5% O(2) atmosphere with and without ethylene on the activities of hydrolytic enzymes associated with cell walls, and total protein profile during ripening of avocado fruits (Persea americana Mill., cv Hass) were investigated. The low 2.5% O(2) atmosphere prevented the rise in the activities of cellulase, polygalacturonase, and acid phosphatase in avocado fruits whose ripening wa...
متن کاملRipening-related polygalacturonase cDNA from avocado.
During the ripening of avocado (Persea americana) fruit, extensive cell wall degradation leads to a dramatic softening of the mesocarp tissue. Two enzymes have been suggested to play a critica1 role in this ripening-associated cell wall degradation in many fruits, including avocado, viz. cellulase (endo-~-1,4-glucanase) and endo-PG (Awad and Young, 1979; Fischer and Bennett, 1991). Although the...
متن کاملPostharvest response of avocado fruits of different maturity to delayed ethylene treatments.
The effect of 10, 100, 1000, 10,000 ppm of ethylene, applied for 3, 6, 12, and 24 hours, on the ripening rate of "Hass" avocado (Persea americana Mill.) fruits at three stages of maturity was investigated. Ethylene treatments were started either immediately after picking or 2 days later. A sharp peak of ethylene production was found to precede full softening by about 2 days and the occurrence o...
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