Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 26, Pages 7380-7386Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201701620
Keywords
anchor peptides; fertilizers; microgels; nutrient uptake; polyelectrolytes
Categories
Funding
- BioSC
- VolkswagenStiftung
- DFG [SFB 985]
- EU
- federal state of North Rhine-Westphalia [EFRE 30 00 883 02]
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Foliar application of micronutrients (e.g. Fe3+) onto plants over an extended time is challenging and often not possible due to insufficient rainfastness. Smart delivery systems which enable micronutrient release over several weeks would offer innovative and sustainable options to improve plant health and food production. Herein, we report a novel foliar fertilizer delivery system based on functional pH-responsive biohybrid microgels that have orthogonal functionality as carriers of micronutrients and employ peptides (termed anchor peptides) as foliar adhesion promoters. The anchor peptides bind to hydrophobic surfaces and the waxy islands of plant leaves. Our system requires no auxiliaries and is loadable, storable, and applicable from aqueous dispersion. We report the synthesis and functionalization of microgels, their loading with Fe3+ ions, and a proof of concept for the biofunctional microgel-based fertilizer system is demonstrated for iron-deficient cucumber plants.
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