Rising atmospheric CO2 concentration affects mineral nutrient and protein concentration of wheat grain

Fernando, N. and Panozzo, J. and Tausz, M. and et al, . (2012) Rising atmospheric CO2 concentration affects mineral nutrient and protein concentration of wheat grain. Food Chemistry, 133 (4). pp. 1307-1311.

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Abstract

Wheat (Triticum aestivum L. cv. Yitpi) was grown in the Australian Grains Free-Air Carbon dioxide Enrichment (AGFACE) facility under current ambient [CO2] (384 μmol mol−1) and elevated [CO2] (550 μmol mol−1) in combination with two different times of sowing (TOS) to investigate the interactive effect of [CO2] and grain filling conditions on wheat grain quality. Grains were sampled at harvest maturity and their protein and mineral nutrient (Ca, S, Zn and Fe) concentrations were measured. Protein concentration of the grain was decreased by 12.7% at elevated [CO2] and the largest reduction in grain protein was observed at the later TOS (TOS2). Concentration of grain S, Ca, Fe and Zn were also significantly decreased at elevated [CO2]. Most of the grain mineral nutrient concentrations were significantly increased at the TOS2 suggesting that rising temperature together with increased water stress are likely to offset some of the negative effects of elevated [CO2] on grain mineral concentrations

Item Type:	Article
Uncontrolled Keywords:	Free-Air Carbon dioxide Enrichment (FACE); Iron; Grain mineral composition; Protein; Zinc
Author Affiliation:	Department of Agriculture and Food Systems, Melbourne School of Land and Environment, The University of Melbourne, Natimuk Road, Private Box 260, Horsham, Victoria 3401, Australia
Subjects:	Plant Production Crop Improvement
Divisions:	Other Crops
Depositing User:	Ms Ishrath Durafsha
Date Deposited:	12 Aug 2015 05:27
Last Modified:	12 Aug 2015 05:27
Official URL:	http://dx.doi.org/10.1016/j.foodchem.2012.01.105
URI:	http://eprints.icrisat.ac.in/id/eprint/13322

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