Effects of supplemental UV-B radiation on the photosynthesis - Physiological properties and flavanoid content of beech seedlings (Fagus sylvatica L.) in outdoor conditions

Réka Láposi, Szilvia Veres, Orsolya Mile, I. Mészáros

Research output: Contribution to journalArticle

4 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)151-153
Number of pages3
JournalActa Biologica Szegediensis
Volume49
Issue number1-2
Publication statusPublished - 2005

Fingerprint

flavanoids
Fagus
Photosynthesis
Fagus sylvatica
Seedlings
Pigments
photosynthesis
Radiation
seedlings
Xanthophylls
leaves
pigments
Chlorophyll
Chemical analysis
Water content
Quenching
Fluorescence
Experiments
Water
lutein

Keywords

  • Photochemical activity
  • Photosynthetic pigments
  • UV-B
  • UV-B absorbing compouds
  • Xanthophyills cycle

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Cell Biology
  • Neuroscience(all)
  • Applied Microbiology and Biotechnology

Cite this

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title = "Effects of supplemental UV-B radiation on the photosynthesis - Physiological properties and flavanoid content of beech seedlings (Fagus sylvatica L.) in outdoor conditions",
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.",
keywords = "Photochemical activity, Photosynthetic pigments, UV-B, UV-B absorbing compouds, Xanthophyills cycle",
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AU - Láposi, Réka

AU - Veres, Szilvia

AU - Mile, Orsolya

AU - Mészáros, I.

PY - 2005

Y1 - 2005

N2 - 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.

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