Advanced Search
Acta Horticulturae
Shtein, I., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Meir, S., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Shahar-Ivanov, Y., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Perzelan, Y., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Philosoph-Hadas, S., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Riov, J., Robert H. Smith Faculty of Agriculture Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
Dodonaea 'Dana' is an Israeli hybrid of Dodonaea viscosa L. 'Purpurea' and Dodonaea lobulata (Sapindaceae), characterized by purple tinted decorative foliage and fruits. Cut Dodonaea branches showed seasonal variations in vase life longevity, wilting after one week in winter, and having a vase life of three weeks in summer. The wilting phenomenon resulted from improper water conductance, caused by temperature-induced seasonal anatomical changes. Exposure of cut branches to ethylene (0.5-10 μL L-1, 24 h) improved their longevity in a concentration-dependent manner, expressed in the absence of leaf wilting and a significant increase in fresh weight (FW) during 12 days. Application of the ethylene inhibitor 1-methylcyclopropene (1-MCP) (0.05-0.2 μL L-1, 4 h) resulted in opposite effects. Ethylene improved water uptake of cut branches but did not affect the transpiration rate or the leaf relative water content (RWC), suggesting that the increased FW might have resulted from new growth. Indeed, a significant ethylene-enhanced increase in both elongation and widening dimensions was observed only in immature leaves (3-to 5.5-cm-long), but not in mature leaves (7.5-to 11-cm-long). The aquaporin inhibitor, phloretin, which reduced the branch FW and leaf size, completely abolished the ethylene-induced increase in branch FW and leaf size, suggesting that the positive response of the cut branches and young leaves to ethylene might involve phloretinsensitive aquaporins. The data suggest that the ethylene-induced increase in FW of cut Dodonaea branches is related to young leaf growth and water flow, which seem to be mediated by the activity of aquaporins.
Powered by ClearMash Solutions Ltd -
Volcani treasures
About
Terms of use
Ethylene extends the vase life of Dodonaea 'Dana' cut branches: Possible mechanisms
1104
Shtein, I., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Meir, S., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Shahar-Ivanov, Y., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Perzelan, Y., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Philosoph-Hadas, S., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Riov, J., Robert H. Smith Faculty of Agriculture Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
Ethylene extends the vase life of Dodonaea 'Dana' cut branches: Possible mechanisms
Dodonaea 'Dana' is an Israeli hybrid of Dodonaea viscosa L. 'Purpurea' and Dodonaea lobulata (Sapindaceae), characterized by purple tinted decorative foliage and fruits. Cut Dodonaea branches showed seasonal variations in vase life longevity, wilting after one week in winter, and having a vase life of three weeks in summer. The wilting phenomenon resulted from improper water conductance, caused by temperature-induced seasonal anatomical changes. Exposure of cut branches to ethylene (0.5-10 μL L-1, 24 h) improved their longevity in a concentration-dependent manner, expressed in the absence of leaf wilting and a significant increase in fresh weight (FW) during 12 days. Application of the ethylene inhibitor 1-methylcyclopropene (1-MCP) (0.05-0.2 μL L-1, 4 h) resulted in opposite effects. Ethylene improved water uptake of cut branches but did not affect the transpiration rate or the leaf relative water content (RWC), suggesting that the increased FW might have resulted from new growth. Indeed, a significant ethylene-enhanced increase in both elongation and widening dimensions was observed only in immature leaves (3-to 5.5-cm-long), but not in mature leaves (7.5-to 11-cm-long). The aquaporin inhibitor, phloretin, which reduced the branch FW and leaf size, completely abolished the ethylene-induced increase in branch FW and leaf size, suggesting that the positive response of the cut branches and young leaves to ethylene might involve phloretinsensitive aquaporins. The data suggest that the ethylene-induced increase in FW of cut Dodonaea branches is related to young leaf growth and water flow, which seem to be mediated by the activity of aquaporins.
Scientific Publication
You may also be interested in