| Title: | Ambient ultraviolet radiation induces protective responses in soybean but does not attenuate indirect defense |
| Address: | "Department of Botany II, Julius-von-Sachs Institute for Biosciences, University of Wurzburg, Julius-von-Sachs-Platz 3, 97082 Wurzburg, Germany" |
| DOI: | 10.1016/j.envpol.2007.11.018 |
| ISSN/ISBN: | 1873-6424 (Electronic) 0269-7491 (Linking) |
| Abstract: | "We investigated the effects of ambient ultraviolet (UV) radiation on (i) the performance and chemistry of soybean plants, (ii) the performance of Spodoptera frugiperda and (iii) the foraging behavior of the herbivore's natural enemy Cotesia marginiventris which exploits herbivore-induced plant volatiles (VOC) for host location. The accumulation of protective phenolics was faster in plants receiving ambient UV than in controls exposed to sun light lacking UV. Accordingly, isorhamnetin- and quercetin-based flavonoids were increased in UV exposed plants. No UV effects were found on the performance and feeding behavior of S. frugiperda. Herbivore-damaged plants emitted the same VOC when grown under ambient or attenuated UV for 5, 10 or 30 days. Consequently, C. marginiventris was attracted but did not discriminate between exposed and unexposed soybeans. In summary, ambient UV radiation affected soybean morphology and physiology but did not destabilize interactions between trophic levels" |
| Keywords: | Animals Chlorophyll/metabolism Ecology/methods Female Host-Parasite Interactions Hymenoptera/physiology Larva Oviposition Pheromones/*metabolism Plant Leaves/metabolism/radiation effects Soybeans/*metabolism/radiation effects Spodoptera/physiology *Ultrav; |
| Notes: | "MedlineWinter, Thorsten R Rostas, Michael eng Research Support, Non-U.S. Gov't England 2008/01/02 Environ Pollut. 2008 Sep; 155(2):290-7. doi: 10.1016/j.envpol.2007.11.018. Epub 2007 Dec 31" |
