Readily available phosphorous and nitrogen counteract for arsenic uptake in wheat (Triticum aestivum L.)

Brackhage, Carsten and Huang, Jen-How and Schaller, Jörg and Elzinga, Evert J. and Dudel, E. Gert. (2014) Readily available phosphorous and nitrogen counteract for arsenic uptake in wheat (Triticum aestivum L.). Scientific Reports, 4 . p. 4944.

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Official URL: http://edoc.unibas.ch/dok/A6288912

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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.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Geowissenschaften > Umweltgeowissenschaften (Alewell)
UniBasel Contributors:Huang, Jen-How
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:12 Oct 2017 09:38
Deposited On:10 Oct 2014 09:19

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