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Dr. Ricardo F.H. Giehl

Research focus

Enhancing nutrient use efficiency is critical for ensuring sustainable crop production and mitigating negative environmental impacts of nutrient losses. The focus of our research is to understand the trade-offs and synergies arising from the modulation of individual and combined root traits, and how these affect nutrient acquisition. We address these questions by integrating genetic engineering approaches with ionomics (mineral elements and stable isotopes), metabolomics (phytohormones, primary metabolites, and specific metabolite groups), transcriptomics, root phenotyping, microscopy, and different molecular biology methods.

Research picture Ricardo Giehl

© Ricardo Giehl

Most important publications

  1. Maniero RA, Picco C, Hartmann A, Engelberger F, Gradogna A, Scholz-Starke J, Melzer M, Kunze G, Carpaneto A, von Wirén N, Giehl RFH (2024) Ferric reduction by a CYBDOM protein counteracts increased iron availability in root meristems induced by phosphorus deficiency. Nat Commun 15(1):422. doi: 10.1038/s41467-023-43912-w.
  2. Paffrath V, Tandron Moya YA, Weber G, von Wirén N, Giehl RFH (2024) A major role of coumarin-dependent ferric iron reduction in strategy I-type iron acquisition in Arabidopsis. Plant Cell 36(3):642-664. doi: 10.1093/plcell/koad279.
  3. Giehl RFH, Flis P, Fuchs J, Gao Y, Salt DE, von Wirén N (2023) Cell type-specific mapping of ion distribution in Arabidopsis thaliana roots. Nat Commun 14(1):3351. doi: 10.1038/s41467-023-38880-0.
  4. Riemer E, Qiu D, Laha D, Harmel RK, Gaugler P, Gaugler V, Frei M, Hajirezaei MR, Laha NP, Krusenbaum L, Schneider R, Saiardi A, Fiedler D, Jessen HJ, Schaaf G, Giehl RFH (2021) ITPK1 is an InsP(6)/ADP phosphotransferase that controls phosphate signaling in Arabidopsis. Mol Plant 14(11):1864-1880. doi: 10.1016/j.molp.2021.07.011.
  5. Giehl RF, Lima JE, von Wirén N (2012) Localized iron supply triggers lateral root elongation in Arabidopsis by altering the AUX1-mediated auxin distribution. Plant Cell 24(1):33-49. doi: 10.1105/tpc.111.092973.