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Readily available phosphorous and nitrogen counteract for arsenic uptake in wheat (Triticum aestivum L.)
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 2645302
Author(s) Brackhage, Carsten; Huang, Jen-How; Schaller, Jörg; Elzinga, Evert J.; Dudel, E. Gert
Author(s) at UniBasel Huang, Jen-How
Year 2014
Title Readily available phosphorous and nitrogen counteract for arsenic uptake in wheat (Triticum aestivum L.)
Journal Scientific Reports
Volume 4
Pages / Article-Number 4944
Abstract Elevated arsenic content in food crops pose a serious human health risk. Apart from rice wheat being another main food crop is possibly cultivated on contaminated sites. But for wheat uptake mechanisms are not entirely understood especially with regard to nutrient fertilization and different moisture regimes taking into account heavy rainfall events due to climate change. Here we show that especially higher P-fertilization under changing redox conditions may enhance arsenic uptake. This counteracts with higher N-fertilization reducing arsenic transfer and translocation into aboveground plant parts for both higher P-fertilization and reducing soil conditions. Arsenic speciation did not change in grain but for leaves P-fertilization together with reducing conditions increased the As(V) content compared to other arsenic species. Our results indicate important dependencies of nutrient fertilization, moisture conditions and substrate type on As accumulation of wheat as one of the most important crop plants worldwide with implications for agricultural practices.
Publisher Nature Publishing Group
ISSN/ISBN 2045-2322
edoc-URL http://edoc.unibas.ch/dok/A6288912
Full Text on edoc Available
Digital Object Identifier DOI 10.1038/srep04944
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/24821134
ISI-Number WOS:000335725300001
Document type (ISI) Journal Article
 
   

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