Leaf phenolic compounds in red clover (Trifolium pratense L.) induced by exposure to moderately elevated ozone
Saviranta, NMM; Julkunen-Tiitto, R; Oksanen, E; Karjalainen, RO
HERO ID
102177
Reference Type
Journal Article
Year
2010
Language
English
PMID
| HERO ID | 102177 |
|---|---|
| In Press | No |
| Year | 2010 |
| Title | Leaf phenolic compounds in red clover (Trifolium pratense L.) induced by exposure to moderately elevated ozone |
| Authors | Saviranta, NMM; Julkunen-Tiitto, R; Oksanen, E; Karjalainen, RO |
| Journal | Environmental Pollution |
| Volume | 158 |
| Issue | 2 |
| Page Numbers | 440-446 |
| Abstract | Red clover (Trifolium pratense L), an important feed crop in many parts of the world, is exposed to elevated ozone over large areas. Plants can limit ozone-induced damages by various defence mechanisms. In this work, changes in the concentrations of antioxidant phenolic compounds induced by slightly elevated levels of ozone were deter-mined in red clover leaves by high-performance liquid chromatography and mass spectrometry. 31 different phenolics were identified and the most abundant isoflavones and flavonoids were biochanin A glycoside malonate (G-M), formononetin-G-M and quercetin-G-M. Elevated ozone (mean 32.4 ppb) increased the total phenolic content of leaves and also had minor effects on the concentrations of individual compounds. Elevated ozone increased the net photosynthesis rate of red clover leaves before visible injuries by 21-23%. This study thus suggests that the concentrations of phenolics in red clover leaves change in response to slightly elevated ozone levels. (C) 2009 Elsevier Ltd. All rights reserved. |
| Doi | 10.1016/j.envpol.2009.08.029 |
| Pmid | 19766367 |
| Wosid | WOS:000274321600013 |
| Url | http://linkinghub.elsevier.com/retrieve/pii/S0269749109004436 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | Red clover; Ozone; Phenolic compounds; Photosynthesis; betula-pendula roth; isoflavonoid accumulation; antioxidant activity; mass-spectrometry; oxidative stress; drying methods; surface ozone; beech trees; flavonoids; co2 |
| Is Peer Review | Yes |
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