Láposi Réka: Effects of supplemental UV-B radiation on the photosynthesis — physiological properties and flavonoid content of beech seedlings (Fagus sylvatica L.) in outdoor conditions. In: Acta biologica Szegediensis, (49) 1-2. pp. 151-153. (2005)
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Abstract
Responses of beech seedlings to supplemental UV-B radiation were investigated during three consecutive seasons, in three repeated experiments. Our attention was paid on the alteration of the photosynthetic pigment composition - especially on the xanthophyll cycle pigments - chlorophyll fluorescence parameters, furthermore the accumulation of UV-B absorbing compounds in leaves, the specific leaf mass and leaf water content. The enhanced UV-B radiation generally affected significantly neither photochemical efficiency of PSII, nor photosynthetic pigment composition. UV-B radiation induced some protective mechanisms, thus VAZ-pool increased in beech leaves in every experiment, parallel with the enhancement of non-photochemical quenching. Amount of UV-B absorbing compounds in leaves increased under enhanced UV-B, but no significant changes were observed in the specific leaf mass. Sensitivity of plants to UV-B is largely influenced by other environmental factors and experimental conditions.
| Item Type: | Article |
|---|---|
| Heading title: | Ecophysiology; Proceedings |
| Journal or Publication Title: | Acta biologica Szegediensis |
| Date: | 2005 |
| Volume: | 49 |
| Number: | 1-2 |
| ISSN: | 1588-385X |
| Page Range: | pp. 151-153 |
| Language: | English |
| Event Title: | Hungarian Congress on Plant Physiology, 8., 2005, Szeged, Hungarian Conference on Photosynthesis, 6., 2005, Szeged |
| Related URLs: | http://acta.bibl.u-szeged.hu/39248/ |
| Uncontrolled Keywords: | Természettudomány, Biológia |
| Additional Information: | Bibliogr.: 153. p.; Abstract |
| Date Deposited: | 2016. Oct. 17. 09:24 |
| Last Modified: | 2021. Apr. 13. 11:07 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/22710 |
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