@article{Tausz2017-08Nitro-40495,
  year={2017},
  doi={10.1016/j.envexpbot.2017.05.010},
  title={Nitrogen nutrition and aspects of root growth and function of two wheat cultivars under elevated [CO<sub>2</sub>]},
  volume={140},
  issn={0098-8472},
  journal={Environmental and Experimental Botany},
  pages={1--7},
  author={Tausz, Michael and Bilela, Silvija and Bahrami, Helale and Armstrong, Roger and Fitzgerald, Glenn and O’Leary, Garry and Simon, Judy and Tausz-Posch, Sabine and Rennenberg, Heinz}
}

<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/40495">
    <dc:contributor>O’Leary, Garry</dc:contributor>
    <dc:creator>Tausz-Posch, Sabine</dc:creator>
    <dc:creator>Armstrong, Roger</dc:creator>
    <dc:creator>Fitzgerald, Glenn</dc:creator>
    <dcterms:abstract xml:lang="eng">Nitrogen (N) input into food production is environmentally sensitive and economically significant, making efficient N use an important goal in agricultural practice and in plant breeding. In cereals, grain N concentration [N] is an important component of grain quality and nutritional value. Increasing atmospheric CO&lt;sub&gt;2&lt;/sub&gt; concentration [CO&lt;sub&gt;2&lt;/sub&gt;] will not only stimulate growth and yield but also diminish grain [N], raising concerns about product quality and nutritional value.&lt;br /&gt;In this study we investigated how differences in root structure and function and agronomic properties between two bread wheat (Triticum aestivum L.) cultivars affect N uptake and allocation to grains in a low rainfall environment, and whether such differences can indicate strategies to mitigate grain [N] decreases under increased [CO&lt;sub&gt;2&lt;/sub&gt;]. Two cultivars (‘Silverstar’ and ‘Yitpi’) were chosen for their similar phenology and yields, but ‘Silverstar’ often has lower grain [N]. A glasshouse experiment showed contrasting root structure and function strategies between the two cultivars in response to soil N: ‘Yitpi’ but not ‘Silverstar’ responded to lower soil N with increased root growth, whereas ‘Silverstar’ but not ‘Yitpi’ showed increased N uptake per unit root mass in response to lower N.&lt;br /&gt;When grown in the Australian Grains Free Air CO&lt;sub&gt;2&lt;/sub&gt; Enrichment facility over multiple seasons both cultivars produced similar yields, but ‘Silverstar’ had consistently lower grain [N], smaller grains and greater harvest index. In situ N uptake measurements with &lt;sup&gt;15&lt;/sup&gt;N label showed that wheat roots can take up nitrate, ammonium and glutamine, and also confirmed differences in uptake strategies between cultivars: ‘Silverstar’ roots had significantly greater uptake capacity than ‘Yitpi’ roots for ammonium. Whilst these results suggest that different strategies in response to variations in soil N supply could be related to grain N outcomes at this field site, there was no interaction with atmospheric [CO&lt;sub&gt;2&lt;/sub&gt;] for any of the measured parameters. Regardless of cultivar, elevated [CO&lt;sub&gt;2&lt;/sub&gt;] (550 μmol mol&lt;sup&gt;−1&lt;/sup&gt;) increased yields and decreased grain [N], but did not affect root uptake capacities for either N form. Contrasting root uptake strategies seem unrelated to grain [N] decrease under elevated [CO&lt;sub&gt;2&lt;/sub&gt;], at least for this site.</dcterms:abstract>
    <dc:contributor>Fitzgerald, Glenn</dc:contributor>
    <dc:contributor>Rennenberg, Heinz</dc:contributor>
    <dc:contributor>Armstrong, Roger</dc:contributor>
    <dc:creator>O’Leary, Garry</dc:creator>
    <dc:creator>Tausz, Michael</dc:creator>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Bilela, Silvija</dc:creator>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-11-07T09:10:04Z</dcterms:available>
    <dc:contributor>Bilela, Silvija</dc:contributor>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-11-07T09:10:04Z</dc:date>
    <dc:creator>Rennenberg, Heinz</dc:creator>
    <dcterms:title>Nitrogen nutrition and aspects of root growth and function of two wheat cultivars under elevated [CO&lt;sub&gt;2&lt;/sub&gt;]</dcterms:title>
    <dcterms:issued>2017-08</dcterms:issued>
    <dc:creator>Bahrami, Helale</dc:creator>
    <dc:contributor>Simon, Judy</dc:contributor>
    <dc:language>eng</dc:language>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/40495"/>
    <dc:contributor>Bahrami, Helale</dc:contributor>
    <dc:contributor>Tausz, Michael</dc:contributor>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:creator>Simon, Judy</dc:creator>
    <dc:contributor>Tausz-Posch, Sabine</dc:contributor>
  </rdf:Description>
</rdf:RDF>