Photosensory transduction in Euglena gracilis: Effect of some metabolic drugs on the photophobic response |
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| Authors: | Corrado Barghigiani Giuliano Colombetti Francesco Lenci Rosalba Banchetti Maria Pia Bizzaro |
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| Institution: | (1) Laboratorio Studio Proprietà Fisiche Biomolecole Cellule C.N.R., via F. Buonarroti 9, I-56100 Pisa, Italy;(2) Istituto Zoologia Università, I-56100 Pisa, Italy;(3) Istituto Biologia Animale Università, I-35100 Padova, Italy |
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| Abstract: | We have investigated the effect of some metabolic drugs, 3-(3 ,4-dichlorophenyl)-1,1-dimethylurea (DCMU), 2,4-dinitrophenol (DNP), sodium azide (NaN3), on the photobehavior of single cells of Euglena gracilis, in order to clarify the relevance of different metabolic pathways in the process of photoperception and sensory transduction in this alga. The results obtained show that the photophobic response of Euglena is not affected by the action of these drugs. This suggests that neither the photosynthetic process nor oxidative phosphorylation play a significant role in the phenomenon of photosensory transduction in Euglena.List of Abbreviations DNP
2,4-dinitrophenol
- DCMU
3-(3,4-dichlorophenyl)-1,1-dimethylurea
- PSI
Photosystem I
- PSII
Photosystem II |
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| Keywords: | Euglena gracilis Photobehavior Metabolic drugs Sensory transduction |
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