[article]
| Titre : |
Effects of long-term elevated [CO2] from natural CO2 springs on Nardus stricta: photosynthesis, biochemistry, growth and phenology |
| Type de document : |
Imprimé |
| Auteurs : |
Andrea C. Cook ; D. T. Tissue ; S. W. Roberts ; W. C. Oechel |
| Année de publication : |
1998 |
| Article en page(s) : |
417-425 |
| Langues : |
Anglais (eng) |
| Catégories : |
[CBNPMP-Thématique] Germination
[CBNPMP-Thématique] Phénologie
[CBNPMP-Thématique] Physiologie végétale
|
| Mots-clés : |
Nardus stricta L. |
| Résumé : |
Plants of Nardus stricta growing near a cold, naturally emitting CO2 spring in Iceland were used to investigate the long-term (> 100 years) effects of elevated [CO2] on photosynthesis, biochemistry, growth and phenology in a northern grassland ecosystem. Comparisons were made between plants growing in an atmosphere naturally enriched with CO2 (≈ 790 μmol mol–1) near the CO2 spring and plants of the same species growing in adjacent areas exposed to ambient CO2 concentrations (≈360μmol mol–1). Nardus stricta growing near the spring exhibited earlier senescence and reductions in photosynthetic capacity (≈25%), Rubisco content (≈26%), Rubisco activity (≈40%), Rubisco activation state (≈23%), chlorophyll content (≈33%) and leaf area index (≈22%) compared with plants growing away from the spring. The potential positive effects of elevated [CO2] on grassland ecosystems in Iceland are likely to be reduced by strong down-regulation in the photosynthetic apparatus of the abundant N. stricta species. |
| Lien pérenne : |
DOI : 10.1046/j.1365-3040.1998.00285.x  |
| Permalink : |
https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=155100 |
in Plant, Cell & Environment > 21 (4) (1998) . - 417-425
Cook, Andrea C., Tissue, D. T., Roberts, S. W., Oechel, W. C.
1998
Effects of long-term elevated [CO2] from natural CO2 springs on Nardus stricta: photosynthesis, biochemistry, growth and phenology.
Plant, Cell & Environment, 21(4): 417-425.
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Affiner la rechercheEffects of long-term elevated [CO2] from natural CO2 springs on Nardus stricta: photosynthesis, biochemistry, growth and phenology in Plant, Cell & Environment, 21 (4) (1998)
