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Plant and Soil

, Volume 329, Issue 1–2, pp 139–153 | Cite as

Genetic mapping of the rice ionome in leaves and grain: identification of QTLs for 17 elements including arsenic, cadmium, iron and selenium

  • Gareth J. Norton
  • Claire M. Deacon
  • Lizhong Xiong
  • Shaoying Huang
  • Andrew A. Meharg
  • Adam H. Price
Regular Article

Abstract

Research into the composition of cereal grains is motivated by increased interest in food quality. Here multi-element analysis is conducted on leaves and grain of the Bala x Azucena rice mapping population grown in the field. Quantitative trait loci (QTLs) for the concentration of 17 elements were detected, revealing 36 QTLs for leaves and 41 for grains. Epistasis was detected for most elements. There was very little correlation between leaf and grain element concentrations. For selenium, lead, phosphorus and magnesium QTLs were detected in the same location for both tissues. In general, there were no major QTL clusters, suggesting separate regulation of each element. QTLs for grain iron, zinc, molybdenum and selenium are potential targets for marker assisted selection to improve seed nutritional quality. An epistatic interaction for grain arsenic also looks promising to decrease the concentration of this carcinogenic element.

Keywords

Arsenic Ionomics Iron QTL mapping Rice Selenium 

Notes

Acknowledgments

GJN was funded by BBSRC-DFID grant BBF0041841. The implementation of the field work was conducted under a joint EU project (FP6 no. 015468 “CEDROME”) to AHP and LX. The authors would like to thank The International Rice Research Institute for providing the seeds of the mapping population.

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Gareth J. Norton
    • 1
  • Claire M. Deacon
    • 1
  • Lizhong Xiong
    • 2
  • Shaoying Huang
    • 2
  • Andrew A. Meharg
    • 1
  • Adam H. Price
    • 1
  1. 1.Department of Plant and Soil Science, Institute of Biological and Environmental SciencesUniversity of AberdeenAberdeenUK
  2. 2.National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina

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