%0 Journal Article
%A Blanke, V.
%A Renker, C.
%A Wagner, M.
%A Füllner, K.
%A Held, M.
%A Kuhn, A. J.
%A Buscot, F.
%T Nitrogen supply affects arbuscular mycorrhizal colonization of Artemisia vulgaris in a phosphate-polluted field site
%J The new phytologist
%V 166
%@ 0028-646X
%C Oxford [u.a.]
%I Wiley-Blackwell
%M PreJuSER-46188
%P 981 - 992
%D 2005
%Z Record converted from VDB: 12.11.2012
%X Root colonization by arbuscular mycorrhizal fungi (AMF) was investigated in industrially polluted grassland characterized by exceptionally high phosphorus levels (up to 120 g kg(-1) soil). Along a pollution-induced nitrogen gradient, soil and tissue element concentrations of Artemisia vulgaris plants and their mycorrhizal status were determined. Additionally, we compared mycorrhization rates and above-ground biomass of A. vulgaris at N-fertilized and control plots in the N-poor area. Despite high soil and tissue P concentrations, plants from N-deficient plots, which were characterized by low tissue N concentrations and N : P ratios, were strongly colonized by AMF, whereas at a plot with comparable P levels, but higher soil and plant N concentrations and N : P ratios, mycorrhization rates were significantly lower. Correlation analyses revealed a negative relationship between percentage root colonization of A. vulgaris by AMF and both tissue N concentration and N : P ratio. Accordingly, in the fertilization experiment, control plants had higher mycorrhization rates than N-fertilized plants, whereas the species attained higher biomass at N-fertilized plots. The results suggest that N deficiency stimulates root colonization by AMF in this extraordinarily P-rich field site.
%K Artemisia: metabolism
%K Artemisia: microbiology
%K Fertilizers
%K Mycorrhizae: metabolism
%K Nitrogen: metabolism
%K Phosphates: analysis
%K Plant Roots: microbiology
%K Soil: analysis
%K Soil Pollutants
%K Fertilizers (NLM Chemicals)
%K Phosphates (NLM Chemicals)
%K Soil (NLM Chemicals)
%K Soil Pollutants (NLM Chemicals)
%K Nitrogen (NLM Chemicals)
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:15869657
%U <Go to ISI:>//WOS:000228750700026
%R 10.1111/j.1469-8137.2005.01374.x
%U https://juser.fz-juelich.de/record/46188