Szőllősi Erzsébet: Effects of UV-B radiation and water stress on chlorophyll fluorescence parameters and activity of xanthophyll cycle in leaves of sessile oak (Quercus petraea) seedlings. In: Acta biologica Szegediensis, (52) 1. pp. 241-242. (2008)
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Absztrakt (kivonat)
In the present study we investigated the photosynthetic responses of sessile oak seedlings to UV-B radiation and water stress in growth chamber experiment. Seedlings of sessile oak showed sensitivity to enhanced UV-B radiation which appeared in decreases of maximum photochemical efficiency (Fv/Fm) and actual photochemical efficiency of PSII ($F/Fm’). UV-B radiation and water stress induced 150 and 170 % increase of non-photochemical fluorescence quenching (NPQ) and threefold and fourfold elevation of activity of xanthophyll cycle as compared to the control, respectively. Seedlings exposed simultaneously to UV-B and water stress induced larger decrease of Fv/Fm, $F/Fm’ and RFD than those exposed separately to enhanced UV-B or water withdrawal as compared to control plants. Both UV-B radiation and water stress increased non-photochemical quenching with a parallel enhancement of zeaxanthin formation.
| Mű típusa: | Cikk, tanulmány, mű |
|---|---|
| Rovatcím: | Proceedings |
| Befoglaló folyóirat/kiadvány címe: | Acta biologica Szegediensis |
| Dátum: | 2008 |
| Kötet: | 52 |
| Szám: | 1 |
| ISSN: | 1588-385X |
| Oldalak: | pp. 241-242 |
| Nyelv: | angol |
| Konferencia neve: | Hungarian Congress on Plant Biology, 9., 2008, Szeged |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/39254/ |
| Kulcsszavak: | Természettudomány, Biológia |
| Megjegyzések: | Bibliogr.: 242. p.; Abstract |
| Feltöltés dátuma: | 2016. okt. 17. 09:24 |
| Utolsó módosítás: | 2021. ápr. 13. 09:35 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/22955 |
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