Changes in Epicuticular Flavonoids and Photosynthetic Pigments as a Plant Response to UV-B Radiation

Treatment of Gnaphalium vira-vira plants with UV-B radiation caused changes in plant growth and in plant chemistry. The leaf surface contained two O-methylated flavones, araneol and 7-O-methylaraneol. HPLC analysis showed that 20 days of UV-B radiation increased the synthesis of 7-O-methylaraneol at the expense of araneol. Spectrophotometric analysis of the photosynthetic pigments showed that UV-B radiation also increases the pigment content in treated plants. Another U V alteration is epidermal hair damage, as observed in SEM pictures of treated leaves. This combination of physiological and phytochemical effects may be interpreted as a plant response to UV-B stress

• Publication year

  1996

• Venue

  Zeitschrift für Naturforschung C

• Publication date

  1996-10-01

• Fields of study

  Biology, Environmental Science

• Identifiers
  DOI 10.1515/znc-1996-9-1012
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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