Learn More
Mycorrhizae play a key role in ecosystem dynamics, and it is important to understand how environmental stress and climate change affect these symbionts. Several climate models predict that the intercontinental western United States will experience an increase in extreme precipitation events and warming temperatures. In 1996, northern Arizona, USA,(More)
Recent studies have shown effects of host plant genetics on community and ecosystem processes, which makes understanding the impacts of genetically based traits on hidden or non-apparent organisms more important. Here we examined links among genetic variation in hybrid cottonwoods, plant phytochemistry, and twig fungal endophytes (i.e., a common hidden(More)
V. Eyring, D. W. Waugh, G. E. Bodeker, E. Cordero, H. Akiyoshi, J. Austin, S. R. Beagley, B. A. Boville, P. Braesicke, C. Brühl, N. Butchart, M. P. Chipperfield, M. Dameris, R. Deckert, M. Deushi, S. M. Frith, R. R. Garcia, A. Gettelman, M. A. Giorgetta, D. E. Kinnison, E. Mancini, E. Manzini, D. R. Marsh, S. Matthes, T. Nagashima, P. A. Newman, J. E.(More)
Although recent research indicates that herbivores interact with plant-associated microbes in complex ways, few studies have examined these interactions using a community approach. For example, the impact of herbivory on the community structure of ectomycorrhizal fungi (EMF) is not well known. The influence of host plant genetics on EMF community(More)
1. Previous studies in humid forests have shown that the 13 C and 15 N isotopic composition differs between ectomycorrhizal (ECM) and saprotrophic (SAP) fungi, and that this ECM–SAP ‘divide’ may provide a useful tool for evaluating fungal trophic status. 2. We evaluated whether this method could delineate the trophic status of fungi in two semiarid,(More)
The foliage of Pinus strobus (eastern white pine), as that of all other conifers examined, is occupied by endophytic fungi, the most frequent of which is Lophodermium nitens. The number and extent of endophytic infections and the genetic relationship of individual isolates within living needles as well as their relationship to isolates from forest floor(More)
Macrophage inflammatory protein-1 alpha (MIP-1alpha) is a member of the -C-C- family of low-molecular weight chemokines. MIP-1alpha is involved in the homeostatic control of stem cell proliferation, in inducing chemotaxis, and also in inflammatory responses in mature cell types. In order to observe modulations of MIP-1alpha secretion and expression along(More)
One of the most significant events in the evolution of the ozone layer over southern mid-latitudes since the late 1970s was the large decrease observed in 1985. This event remains unexplained and a detailed investigation of the mechanisms responsible for the event has not previously been undertaken. In this study, the 1985 Southern Hemisphere mid-latitude(More)
Long-term changes and variability in a transient simulation with a chemistry-climate model employing realistic forcing M. Dameris, V. Grewe, M. Ponater, R. Deckert, V. Eyring, F. Mager, S. Matthes, C. Schnadt, A. Stenke, B. Steil, C. Brühl, and M. A. Giorgetta Institut für Physik der Atmosphäre, DLR-Oberpfaffenhofen, Wessling, Germany Max-Planck-Institut(More)