Turcsányi Enikő; Vass Imre: Effect of UV-A radiation on photosynthetic electron transport. In: Acta biologica Szegediensis, (46) 3-4. pp. 171-173. (2002)
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We have studied the inhibition of photosynthetic electron transport by UV-A (320-400nm) radiation in isolated spinach thylakoids by flash-induced oxygen and thermoluminescence (TL) measurements. The flash pattern of oxygen evolution showed an increased amount of the S0 state in the dark, which indicate a direct effect of UV-A radiation in the water-oxidizing complex. TL measurements revealed the UV-A induced loss of PSII centers. Flash-induced oscillation of the B TL band, originating from the S2Q8 recombination, indicated a UV-A induced decrease in the amount of Q8 relative to Q8. In conclusion, our data show that UV-A radiation is highly damaging for PSII, whose electron transport is affected both at the water oxidizing complex, and the binding site of the Q8 quinone electron acceptor.
| Mű típusa: | Cikk, tanulmány, mű |
|---|---|
| Rovatcím: | Photosynthesis, the effects of UV-B irradiation; Proceedings of the 7th Hungarian Congress on Plant Physiology |
| Befoglaló folyóirat/kiadvány címe: | Acta biologica Szegediensis |
| Dátum: | 2002 |
| Kötet: | 46 |
| Szám: | 3-4 |
| ISSN: | 1588-385X |
| Oldalak: | pp. 171-173 |
| Nyelv: | angol |
| Konferencia neve: | Hungarian Congress on Plant Physiology, 7., 2002, Szeged |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/39245/ |
| Kulcsszavak: | Természettudomány, Biológia |
| Megjegyzések: | Bibliogr.: 173. p.; Abstract |
| Feltöltés dátuma: | 2016. okt. 17. 09:25 |
| Utolsó módosítás: | 2021. ápr. 13. 12:25 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/22547 |
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