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Natural allelic variation of FRO2 modulates Arabidopsis root growth under iron deficiency

Author

Listed:
  • Santosh B. Satbhai

    (Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC))

  • Claudia Setzer

    (Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC))

  • Florentina Freynschlag

    (Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC))

  • Radka Slovak

    (Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC))

  • Envel Kerdaffrec

    (Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC))

  • Wolfgang Busch

    (Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC)
    Salk Institute For Biological Studies, Plant Molecular And Cellular Biology Laboratory)

Abstract

Low availability of Fe significantly limits crop yields in many parts of the world. However, it is largely unknown which genes and alleles adjust plant growth in Fe limited environments. Using natural variation of a geographically restricted panel of Arabidopsis thaliana accessions, we identify allelic variation at the FRO2 locus associated with root length under iron deficiency. We show that non-coding sequence variation at the FRO2 locus leads to variation of FRO2 transcript levels, as well as ferric chelate reductase activity, and is causal for a portion of the observed root length variation. These FRO2 allele dependent differences are coupled with altered seedling phenotypes grown on iron-limited soil. Overall, we show that these natural genetic variants of FRO2 tune its expression. These variants might be useful for improvement of agronomically relevant species under specific environmental conditions, such as in podzols or calcareous soils.

Suggested Citation

  • Santosh B. Satbhai & Claudia Setzer & Florentina Freynschlag & Radka Slovak & Envel Kerdaffrec & Wolfgang Busch, 2017. "Natural allelic variation of FRO2 modulates Arabidopsis root growth under iron deficiency," Nature Communications, Nature, vol. 8(1), pages 1-10, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15603
    DOI: 10.1038/ncomms15603
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    Cited by:

    1. Matthieu Pierre Platre & Santosh B. Satbhai & Lukas Brent & Matias F. Gleason & Min Cao & Magali Grison & Marie Glavier & Ling Zhang & Christophe Gaillochet & Christian Goeschl & Marco Giovannetti & B, 2022. "The receptor kinase SRF3 coordinates iron-level and flagellin dependent defense and growth responses in plants," Nature Communications, Nature, vol. 13(1), pages 1-18, December.

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