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  • Pollination-induced ethylene promotes the early phase of pollen tube growth in Petunia inflata.

Pollination-induced ethylene promotes the early phase of pollen tube growth in Petunia inflata.

Journal of plant physiology (2003-05-17)
Margaret J Holden, Jerry A Marty, Anu Singh-Cundy
要旨

In Petunia inflata, a species with gametophytic self-incompatibility, pollination triggers two phases of ethylene production by the pistil, the first of which peaks 3 hours after pollination with compatible or incompatible pollen. To investigate the physiological significance of the first phase of ethylene production, pollinated flowers were treated with 2,5-norbornadiene (NBD), an inhibitor of ethylene action. Treatment with NBD reduced pollen tube growth in a dose-dependent manner during the first six hours after pollination; however, pollen tube growth was insensitive to NBD if the treatment was applied 6 hours or more after pollination. Simultaneous application of exogenous ethylene substantially offset the inhibitory effects of NBD in flowers pollinated for 4 hours. Another inhibitor of ethylene action, 1-methylcyclopropene (1-MCP), also produced a strong inhibition of pollen tube growth during the first six hours of pollination. The experiments with 1-MCP pretreatment indicate that pistil tissues are the primary target of the pollination-induced ethylene.

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製品内容

Sigma-Aldrich
ビシクロ[2.2.1]ヘプタ-2,5-ジエン, 98%