| 1 | Author | Pedro Cuadra2, JeffreyB H Arborneb | Requires cookie* |
| Title | Changes in Epicuticular Flavonoids and Photosynthetic Pigments as a Plant Response to UV-B Radiation  | ||
| Abstract | 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. A nother U V alteration is epidermal hair damage, as observed in SEM pictures of treated leaves. This combination o f physiological and phytochemical effects may be interpreted as a plant response to UV-B stress. | ||
| Reference | Z. Naturforsch. 51c, 671 (1996); received April 29/June 10 1996 | ||
| Published | 1996 | ||
| Keywords | Gnaphalium vira-vira, Compositae, Epicuticular Flavonoids, Lipophilic Flavones, U V-B Radiation | ||
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