1-substituted cyclopropenes: Effective Blocking Agents for Ethylene Action in Plants |
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| Authors: | Edward C Sisler Thair Alwan Raphael Goren Margrethe Serek Akiva Apelbaum |
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| Institution: | (1) Department of Structural and Molecular Biochemistry, North Carolina State University, Raleigh, 27695-7622, USA;(2) Department of Horticulture, Hebrew University of Jerusalem, Rehovot, 76-100, Israel;(3) Department of Agriculture Sciences, Horticulture, The Royal Veterinary and Agriculture University, Thorvaldsensvej 40, Frederieksberg C, 1871, Denmark;(4) Department of Horticulture, Floriculture, University of Hanover, Herrenhaeuser Str. 2, Hanover, 30419, Germany |
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| Abstract: | A series of 1-alkane substituted cyclopropenes has been prepared and tested as ethylene antagonists using banana fruits as an assay system. 1-Methyl-, 1-ethyl-, 1-propyl-, 1-butyl-, 1-pentyl-, 1-hexyl-, 1-heptyl-, 1-octyl-, 1-nonyl-, and 1-decylcyclopropene were all very active compounds. 1-Methylcyclopropene protected bananas from ethylene with a minimum concentration of 0.7 nl.l–1 after a 24 h exposure. As the carbon chain length was extended the minimum requirement increased some, but starting with 1-butylcyclopropene, the minimum concentration requirement declined and many cyclopropenes were required in lower concentrations than 1-methylcyclopropene. The time of protection at ambient temperature (22–23 °C) was 12 d for 1-methyl-, 1-ethyl-, 1-propyl-, and 1-butylcyclopropene. 1-Pentylcyclopropene protected bananas for 14 d, 1-hexylcyclopropene for 20 d, 1-heptylcyclopropene for 21 d, 1-octylcyclopropene for 25 d, 1-nonylcyclopropene for 35 d, and 1-decylcyclopropene for 36 d. |
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| Keywords: | Antagonists Bananas Cyclopropenes Ethylene Inhibitor Receptor |
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