|Acetabularia mediterranea and ethylene: production in relation with development, circadian rhythms in emission, and response to external application|Vanden Driessche, T.; Kevers, C.; Collet, M.; Gaspar, T. (1988). Acetabularia mediterranea and ethylene: production in relation with development, circadian rhythms in emission, and response to external application. J. Plant Physiol. 133(5): 635-639. hdl.handle.net/10.1016/S0176-1617(88)80021-X
In: Journal of plant physiology. Elsevier: Jena. ISSN 0176-1617, more
Acetabularia mediterranea; ethylene; ethepbon; circadian rhythm
|Authors|| || Top |
- Vanden Driessche, T.
- Kevers, C.
- Collet, M.
- Gaspar, T.
Whole Acetabularia cells evolved ethylene with a decreasing rate in the progression of development, the ultimate stage being cap formation. The algae retained endogenous ethylene in a similar manner. The younger the algae, the higher their capacity to convert exogenously supplied ACC to ethylene. There was a circadian rhythm of ethylene production, peaking in the middle of the light period. Anucleated algae also produced ethylene although at a lower rate, but with the same general circadian pattern. Acetabularia extracts contained ACC and a conjugated form of it, with higher levels at younger stages. Ethephon (10−4 M) had no effect on algal growth but influenced cap formation when applied either continuously (the treatment beginning at defined time points in the 24 h cycle) or in pulses; the efficiency of both types of treatments greatly depended on the circadian time of application.