Abstract
Abstract
Projections of global rice yields account for climate change. They do not, however, consider the coupled stresses of impending climate change and arsenic in paddy soils. Here, we show in a greenhouse study that future conditions cause a greater proportion of pore-water arsenite, the more toxic form of arsenic, in the rhizosphere of Californian Oryza sativa L. variety M206, grown on Californian paddy soil. As a result, grain yields decrease by 39% compared to yields at today’s arsenic soil concentrations. In addition, future climatic conditions cause a nearly twofold increase of grain inorganic arsenic concentrations. Our findings indicate that climate-induced changes in soil arsenic behaviour and plant response will lead to currently unforeseen losses in rice grain productivity and quality. Pursuing rice varieties and crop management practices that alleviate the coupled stresses of soil arsenic and change in climatic factors are needed to overcome the currently impending food crisis.
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry
Reference73 articles.
1. Leading Innovations Annual Report 2016 by the International Rice Research Institute ISSN 0074-7793.
2. Baker, J. T. & Allen, L. H., Jr. CO2 and Biosphere, Vol. 14. In Advances in Vegetation Science (eds Rozema, J., Lambers, H., Geijn, S. C. & Cambridge, M. L.) Ch. 16, 239–260 (Springer Netherlands, 1993).
3. Matthews, R. B., Kropff, M. J., Horie, T. & Bachelet, D. Simulating the impact of climate change on rice production in Asia and evaluating options for adaptation. Agricul. Sys. 54, 399–425 (1997).
4. Peng, S. et al. Rice yields decline with higher night temperature from global warming. Proc. Natl Acad. Sci. USA 101, 9971–9975 (2004).
5. Krishnan, P., Swain, D. K., Bhaskar, B. C., Nayak, S. K. & Dash, R. N. Impact of elevated CO2 and temperature on rice yield and methods of adaptation as evaluated by crop simulation studies. Agricul., Ecosys. Environ. 122, 233–242 (2007).
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