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Natural variation in Arabidopsis thaliana reveals shoot ionome, biomass, and gene expression changes as biomarkers for zinc deficiency tolerance

Campos, Ana Carolina A.L.; Kruijer, Willem; Alexander, Ross; Akkers, Robert C.; Danku, John; Salt, David E.; Aarts, Mark G.M.

Authors

Ana Carolina A.L. Campos

Willem Kruijer

Ross Alexander

Robert C. Akkers

John Danku

David E. Salt

Mark G.M. Aarts



Abstract

Zinc (Zn) is an essential nutrient for plants, with a crucial role as a cofactor for many enzymes. Approximately one-third of the global arable land area is Zn deficient, leading to reduced crop yield and quality. To improve crop tolerance to Zn deficiency, it is important to understand the mechanisms plants have adopted to tolerate suboptimal Zn supply. In this study, physiological and molecular aspects of traits related to Zn deficiency tolerance were examined in a panel of 19 Arabidopsis thaliana accessions. Accessions showed a larger variation for shoot biomass than for Zn concentration, indicating that they have different requirements for their minimal Zn concentration required for growth. Accessions with a higher tolerance to Zn deficiency showed an increased expression of the Zn deficiency-responsive genes ZIP4 and IRT3 in comparison with Zn deficiency-sensitive accessions. Changes in the shoot ionome, as a result of the Zn treatment of the plants, were used to build a multinomial logistic regression model able to distinguish plants regarding their Zn nutritional status. This set of biomarkers, reflecting the A. thaliana response to Zn deficiency and Zn deficiency tolerance, can be useful for future studies aiming to improve the performance and Zn status of crop plants grown under suboptimal Zn concentrations.

Journal Article Type Article
Publication Date Jun 22, 2017
Journal Journal of Experimental Botany
Print ISSN 0022-0957
Electronic ISSN 1460-2431
Publisher Oxford University Press (OUP)
Peer Reviewed Peer Reviewed
Volume 68
Issue 13
APA6 Citation Campos, A. C. A., Kruijer, W., Alexander, R., Akkers, R. C., Danku, J., Salt, D. E., & Aarts, M. G. (2017). Natural variation in Arabidopsis thaliana reveals shoot ionome, biomass, and gene expression changes as biomarkers for zinc deficiency tolerance. Journal of Experimental Botany, 68(13), doi:10.1093/jxb/erx191
DOI https://doi.org/10.1093/jxb/erx191
Keywords Biofortification, biomarker, mineral concentration, plant ionome, shoot growth, zinc usage index
Publisher URL https://academic.oup.com/jxb/article/68/13/3643/3884310/Natural-variation-in-Arabidopsis-thaliana-reveals
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information This is a pre-copyedited, author-produced version of an article accepted for publication in Journal of Experimental Botany following peer review. The version of record, Natural variation in Arabidopsis thaliana reveals shoot ionome, biomass, and gene expression changes as biomarkers for zinc deficiency tolerance. Ana Carolina A.L. Campos, Willem Kruijer, Ross Alexander, Robert C. Akkers, John Danku, David E. Salt, Mark G.M. Aarts, Journal of Experimental Botany, Volume 68, Issue 13, 15 June 2017, pp. 3643–3656 is available online at: https://academic.oup.co...dopsis-thaliana-reveals and doi:10.1093/jxb/erx191.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf


watermark.pdf (2 Mb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf


JEXBOT 2016 189563 2nd revision submitted.pdf (902 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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