Suppression of ethylene perception after exposure to cooling conditions delays the progress of softening in Hayward kiwifruit
To investigate the physiological effect of ethylene and 1-methylcyclopropene [1-MCP] in the progress of "Hayward" kiwifruit softening, fruit were treated with ethylene or 1-MCP right after harvest, or with 1-MCP at different ripening stages after 40, 80 or 120 d of cold [0 °C] storage. Tre...
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| Formato: | Artículo |
| Lenguaje: | Español |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2010Ilina.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 245 | 1 | 0 | |a Suppression of ethylene perception after exposure to cooling conditions delays the progress of softening in Hayward kiwifruit |
| 520 | |a To investigate the physiological effect of ethylene and 1-methylcyclopropene [1-MCP] in the progress of "Hayward" kiwifruit softening, fruit were treated with ethylene or 1-MCP right after harvest, or with 1-MCP at different ripening stages after 40, 80 or 120 d of cold [0 °C] storage. Treatment with ethylene right after harvest stimulated flesh softening, increased and advanced the ethylene production peak and the expression of the genes KWACS1 and KWACO1 involved in ethylene biosynthesis. In contrast, treatment with 1-MCP at the same stage markedly retarded softening, and inhibited ethylene production. Ripening-related increases in KWACS1 and KWACO1 transcript abundance were largely blocked by 1-MCP treatment thus indicating that these genes are positively regulated by ethylene. Nevertheless, ethylene and 1-MCP effect was highly dependent on the growing region that may influence kiwifruit constitution, quality, storage potential and subsequent responsiveness to postharvest technologies. Kiwifruit stored for 40, 80 or 120 d of cold storage and then treated with 1-MCP before rewarming to 20 °C for further ripening displayed a reduced flesh softening rate and an extended "eating ripe" stage. These results clearly indicate that the application of 1-MCP can play a significant role in both the initiation and progress of the kiwifruit softening process. 1-MCP inhibited or severely decreased autocatalytic ethylene production at every ripening stage. KWACS1 and KWACO1 gene transcription was inhibited by 1-MCP treatment after 40 and 80 d of cold storage thus suggesting that there is a positive feedback regulation for ethylene production even after cold storage. In contrast, KWACS2 transcript levels did not show a clear response to 1-MCP in every experiment. This work provides evidence that kiwifruit softening can be delayed by inhibiting ethylene perception, even when fruit have reached advanced stages of ripening. These findings point to the commercial usefulness of 1-MCP in `Hayward` kiwifruit postharvest conservation and consumer acceptance. | ||
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| 653 | 0 | |a ACTINIDIA DELICIOSA | |
| 653 | 0 | |a COLD STORAGE | |
| 653 | 0 | |a ETHYLENE | |
| 653 | 0 | |a FIRMNESS | |
| 653 | 0 | |a ACTINIDIA DELICIOSA | |
| 700 | 1 | |9 34110 |a Ilina, Natalia | |
| 700 | 1 | |9 12967 |a Alem, Hubert Jorge | |
| 700 | 1 | |9 6303 |a Pagano, Eduardo Antonio | |
| 700 | 1 | |9 10078 |a Sozzi, Gabriel Oscar | |
| 773 | |t Postharvest Biology and Technology |g Vol.55, no.3 (2010) p.160-168 | ||
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| 900 | |a ^tSuppression of ethylene perception after exposure to cooling conditions delays the progress of softening in 'Hayward' kiwifruit | ||
| 900 | |a ^aIlina^bN. | ||
| 900 | |a ^aAlem^bH.J. | ||
| 900 | |a ^aPagano^bE.A. | ||
| 900 | |a ^aSozzi^bG.O. | ||
| 900 | |a ^aIlina^bN. | ||
| 900 | |a ^aAlem^bH. J. | ||
| 900 | |a ^aPagano^bE. A. | ||
| 900 | |a ^aSozzi^bG. O. | ||
| 900 | |a ^aIlina, N.^tFacultad de Agronomía, Universidad de Buenos Aires, Avda. San Martín 4453, C1417DSE Buenos Aires, Argentina | ||
| 900 | |a ^aAlem, H.J.^tConsejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina | ||
| 900 | |a ^aPagano, E.A.^t | ||
| 900 | |a ^aSozzi, G.O.^t | ||
| 900 | |a ^tPostharvest Biology and Technology^cPostharvest Biol. Technol. | ||
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| 900 | |a Vol. 55, no. 3 | ||
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| 900 | |a 1-AMINOCYCLOPROPANE-1-CARBOXYLIC ACID SYNTHASE AND OXIDASE GENE EXPRESSION | ||
| 900 | |a 1-METHYLCYCLOPROPENE | ||
| 900 | |a ACTINIDIA DELICIOSA | ||
| 900 | |a COLD STORAGE | ||
| 900 | |a ETHYLENE | ||
| 900 | |a FIRMNESS | ||
| 900 | |a ACTINIDIA DELICIOSA | ||
| 900 | |a To investigate the physiological effect of ethylene and 1-methylcyclopropene [1-MCP] in the progress of "Hayward" kiwifruit softening, fruit were treated with ethylene or 1-MCP right after harvest, or with 1-MCP at different ripening stages after 40, 80 or 120 d of cold [0 °C] storage. Treatment with ethylene right after harvest stimulated flesh softening, increased and advanced the ethylene production peak and the expression of the genes KWACS1 and KWACO1 involved in ethylene biosynthesis. In contrast, treatment with 1-MCP at the same stage markedly retarded softening, and inhibited ethylene production. Ripening-related increases in KWACS1 and KWACO1 transcript abundance were largely blocked by 1-MCP treatment thus indicating that these genes are positively regulated by ethylene. Nevertheless, ethylene and 1-MCP effect was highly dependent on the growing region that may influence kiwifruit constitution, quality, storage potential and subsequent responsiveness to postharvest technologies. Kiwifruit stored for 40, 80 or 120 d of cold storage and then treated with 1-MCP before rewarming to 20 °C for further ripening displayed a reduced flesh softening rate and an extended "eating ripe" stage. These results clearly indicate that the application of 1-MCP can play a significant role in both the initiation and progress of the kiwifruit softening process. 1-MCP inhibited or severely decreased autocatalytic ethylene production at every ripening stage. KWACS1 and KWACO1 gene transcription was inhibited by 1-MCP treatment after 40 and 80 d of cold storage thus suggesting that there is a positive feedback regulation for ethylene production even after cold storage. In contrast, KWACS2 transcript levels did not show a clear response to 1-MCP in every experiment. This work provides evidence that kiwifruit softening can be delayed by inhibiting ethylene perception, even when fruit have reached advanced stages of ripening. These findings point to the commercial usefulness of 1-MCP in `Hayward` kiwifruit postharvest conservation and consumer acceptance. | ||
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