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Plant and Soil

, Volume 430, Issue 1–2, pp 139–149 | Cite as

Roles of shoots and roots in cadmium uptake and distribution in tubers of potato (Solanum tuberosum L)

  • Molla F. Mengist
  • Dan Milbourne
  • Sheila Alves
  • Mike J. McLaughlin
  • Peter W. Jones
  • Denis Griffin
Regular Article
  • 239 Downloads

Abstract

Aim

Potato cultivars vary in biomass production and Cd concentration. Differences in growth can lead to differences in tuber cadmium (Cd) concentration through growth dilution and/or limited uptake of Cd from the soil. The aims of this study were to investigate the relative importance of shoot (above ground plant parts) and root in dry weight (DW) accumulation, total Cd uptake and Cd distribution between organs and how this affects tuber Cd concentration.

Materials and methods

Three experiments were carried out, two with reciprocal grafting between high and low tuber Cd accumulating cultivars under two soil Cd conditions, and the other was involving the evaluation of F1 genotypes, from a cross between these high and low tuber Cd accumulating cultivars. These experiments were carried out under controlled greenhouse conditions.

Results

The results showed that the root system is important for total Cd uptake but less important for growth and Cd distribution between organs. On the other hand, the shoot system is important for regulating growth of shoot and roots, and for determining Cd distribution between organs.

Conclusion

The data suggest that tuber Cd concentration was mainly regulated by shoot source and to a lesser extent by total uptake of Cd.

Keywords

Cadmium Potato Grafting Root Shoot Tuber 

Notes

Acknowledgements

This study is part of the RED-Cd-IRL project, funded under the Research Stimulus Fund (RSF, Ref 11 SF 308) by the Irish Department of Agriculture, Food and the Marine (DAFM). Molla F. Mengist acknowledges the post-graduate scholarship under the same project. We appreciate the assistance of the potato breeding team at Oak Park Crop Research Centre in Carlow, for the support in the set up and maintenance of the experimental trials, and Francis Collier and the farm staff at Grange Animal & Grassland Research Centre in Dunsany, for assisting in soil collection.

Author contributions

MFM, DG and DM conceived the study; MFM performed the experiment, data analysis and drafted the manuscript; SA, PWJ and MJM gave scientific input and contributed to the interpretation of results. All authors read and edited the manuscript.

Supplementary material

11104_2018_3717_MOESM1_ESM.docx (148 kb)
ESM 1 (DOCX 147 kb)

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Teagasc, Crops Research CentreCo. CarlowIreland
  2. 2.School of Biological, Earth and Environmental SciencesUniversity College CorkCorkIreland
  3. 3.Soil Science Group, School of Agriculture, Food and WineUniversity of AdelaideGlen OsmondAustralia

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