Enhanced UV-B and elevated CO(2) impacts sub-arctic shrub berry abundance, quality and seed germination.
Ambio
; 41 Suppl 3: 256-68, 2012.
Article
en En
| MEDLINE
| ID: mdl-22864699
This study investigated the effects of long-term-enhanced UV-B, and combined UV-B with elevated CO(2) on dwarf shrub berry characteristics in a sub-arctic heath community. Germination of Vaccinium myrtillus was enhanced in seeds produced at elevated UV-B, but seed numbers and berry size were unaffected. Elevated UV-B and CO(2) stimulated the abundance of V. myrtillus berries, whilst UV-B alone stimulated the berry abundance of V. vitis-idaea and Empetrum hermaphroditum. Enhanced UV-B reduced concentrations of several polyphenolics in V. myrtillus berries, whilst elevated CO(2) increased quercetin glycosides in V. myrtillus, and syringetin glycosides and anthocyanins in E. hermaphroditum berries. UV-B × CO(2) interactions were found for total anthocyanins, delphinidin-3-hexoside and peonidin-3-pentosidein in V. myrtillus berries but not E. hermaphroditum. Results suggest positive impacts of UV-B on the germination of V. myrtillus and species-specific impacts of UV-B × elevated CO(2) on berry abundance and quality. The findings have relevance and implications for human and animal consumers plus seed dispersal and seedling establishment.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Semillas
/
Rayos Ultravioleta
/
Dióxido de Carbono
/
Ecosistema
/
Vaccinium
/
Frutas
País/Región como asunto:
Europa
Idioma:
En
Revista:
Ambio
Año:
2012
Tipo del documento:
Article
Pais de publicación:
Suecia