Enhanced UV-B and elevated CO(2) impacts sub-arctic shrub berry abundance, quality and seed germination |
| |
Authors: | Gwynn-Jones Dylan Jones Alan G Waterhouse Alice Winters Ana Comont David Scullion John Gardias Rosie Graee Bente J Lee John A Callaghan Terry V |
| |
Institution: | Institute of Biological Environmental and Rural Sciences, Aberystwyth University, Ceredigion, Wales, SY23 3DA, UK. dyj@aber.ac.uk |
| |
Abstract: | 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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|