Isotopic fractionation of Zn in tomato plants suggests the role of root exudates on Zn uptake

@article{Smolders2013IsotopicFO,
  title={Isotopic fractionation of Zn in tomato plants suggests the role of root exudates on Zn uptake},
  author={Erik Smolders and Liske Versieren and Dong Shuofei and Nadine Mattielli and Dominik J Weiss and Ivan Petrov and Fien Degryse},
  journal={Plant and Soil},
  year={2013},
  volume={370},
  pages={605-613}
}
Phytosiderophore-chelated Zn can be absorbed in grasses. Root exudates of dicotyledonous plants can mobilize soil Zn but it is unclear how this affects Zn bioavailability. Stable Zn isotope shifts can indicate exudate-facilitated Zn uptake, since complexation of Zn2+ by organic ligands in solution yields a small, but detectable, enrichment of the heavy Zn isotope due to thermodynamic fractionation. Tomato seedlings were grown in resin-buffered nutrient solution in which free Zn2+ concentrations… CONTINUE READING