Postharvest technologies for extending the shelf life of ornamental crops
by Margrethe Serek, E.C. Sisler, S. Frello, S. Sriskandarajah
International Journal of Postharvest Technology and Innovation (IJPTI), Vol. 1, No. 1, 2006

Abstract: 1-Methylcyclopropene (1-MCP) and other cyclopropenes block ethylene responses in plants at the receptor level. 1-MCP is commercially available under the trade name of EthylBloc® and SmartFresh™. It is very effective in blocking ethylene responses in a range of ornamental crops, fruits and vegetables. Some recently prepared 1-substituted cyclopropenes inactivate the receptor even for a longer time than 1-MCP. Control of function of the ethylene receptor can be achieved by using molecular techniques. Gubrium et al. (2000) has introduced the etr1-1 mutant gene under control of the constitutive promoter CaMV35S in petunia flowers for improvement of postharvest life. However, constitutive expression of etr1-1 caused unwanted effects, e.g., significant reduction of adventitious root formation. In our study with Campanula carpatica potted plants we used a flower specific promoter instead of 35S, and avoided such side effects. Horticultural performance and subsequent evaluation of the transgenic Campanula plants have been performed.

Online publication date: Wed, 08-Mar-2006

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