Veres Szilvia: Interspecific variations of photochemical properties in a xerotherm grassland community. In: Acta biologica Szegediensis, (46) 3-4. pp. 237-238. (2002)
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Absztrakt (kivonat)
In this work the role of xanthophyll cycle an d its relation to the photosynthetic activity in the dominant species of a semiarid sandy grassland community (Potentillo-Festucetum pseudovinae) were studied during the stressful summer period . The total amount of xanthophyll cycle pigments (violaxanthin, anteraxanthin, zeaxanthin) related to total chlorophyll content (VAZ pool) showed considerable interspecific alterations and it was 2-3 times larger in the summer period than in spring. The changes in the xanthophyll cycle , the potential (FyFm) and actual photochemical efficiency (AF/Fm) of PSII, as well as, the results of parallel measurements on their daily dynamics show that zeaxanthin has a major role in the photoinhibition in the photosynthetic apparatus during the summer stress on sandy grassland species. In July, the decrease s of F/F m was accompanied with increases of NPQ at the 100-120% extentt depending on the species.
| Mű típusa: | Cikk, tanulmány, mű |
|---|---|
| Rovatcím: | Ecophysiology; 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. 237-238 |
| 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.: 238. 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/22573 |
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