title: Rhizospheric NO interacts with the acquisition of reduced N sources by the roots of European beech (Fagus sylvatica L.).
abstract: The gas phase of the soil plays an important role in plant growth and development. We investigated the effect of rhizospheric NO as a signalling compound for N uptake of beech roots. Following exposure to NO, ammonium and glutamine uptake into roots were determined using (15)N-labelling, and gene expression of selected transporters was analysed by quantitative real-time PCR. Uptake of both N sources increased significantly with elevated NO concentration. However, with one exception, this increase was not reflected in up-regulation of expression of the respective transporters.
authors: Institute of Forest Botany and Tree Physiology, University of Freiburg, Freiburg, Germany. judy.simon@ctp.uni-freiburg.de
authors: Judy
authors: J
authors: Simon
authors: Gunda
authors: G
authors: Stoelken
authors: Michael
authors: M
authors: Rienks
authors: Heinz
authors: H
authors: Rennenberg
mesh_terms: D017753:Ecosystem; D029964:Fagus / Q000033:anatomy & histology / Q000378:metabolism; D005973:Glutamine / Q000378:metabolism; D026901:Membrane Transport Proteins / Q000378:metabolism; D009569:Nitric Oxide / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism*; D000644:Quaternary Ammonium Compounds / Q000378:metabolism; D027343:Rhizome / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology; D012987:Soil
chemical_list: D026901:Membrane Transport Proteins; D000644:Quaternary Ammonium Compounds; D012987:Soil; D005973:Glutamine; D009569:Nitric Oxide; D009584:Nitrogen