?url_ver=Z39.88-2004&rft_id=10.1093%2Fjxb%2Ferl238&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Babourina%2C+O&rft.aulast=Babourina&rft.aufirst=O&rft.issue=3&rft.volume=58&rft.date=2007&rft.issn=0022-0957&rft.atitle=Nitrate+supply+affects+ammonium+transport+in+canola+roots&rft.title=Journal+of+Experimental+Botany&rft.pages=651-658&rft.genre=article