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  • Magnetic Biohybrid Robots a...
    Huska, Dalibor; Mayorga‐Martinez, Carmen C.; Zelinka, Radim; Pumera, Martin

    Small (Weinheim an der Bergstrasse, Germany), 06/2022, Volume: 18, Issue: 23
    Journal Article

    Micro/nanorobots represent a new generation of micromachines that can accomplish various tasks, such as loading and transporting specific targets or pharmaceuticals for a given application. Biohybrid robots consisting of biological cells (bacteria, sperm, and microalgae) combined with inorganic particles to control or propel their movement are of particular interest. The skeleton of these biohybrid robots can be used to load biomolecules. In this work, the authors create biohybrid robots based on tomato plants by coculturing ferromagnetic nanoparticles (Fe3O4) with tomato callus cells. The tomato‐based biohybrid robots (Tomato‐Biobots) containing Fe3O4 nanoparticles  are driven by a transversely rotating magnetic field. In addition, biohybrid robots are used to load vitamin C, to generate clones of tomato cells. It is shown that the presence of Fe3O4 does not affect the growth of tomato callus. This study opens a wide range of possibilities for the use of biohybrid robots@Fe3O4 to deliver conventional agrochemicals, including fertilizers, pesticides, and herbicides, and allows for a gradual and sustained release of nutrients and agrochemicals, leading to precise dosing that reduces the amount of agrochemicals used. This conceptually new type of micromachine with application to plants and agronomy shall find broad use in this field. Here, biohybrid robots based on tomato plants by coculturing ferromagnetic nanoparticles with tomato callus cells are generated. These “Tomato‐Biobots” are driven by a transversely rotating magnetic field. In addition, they are used as drug carrier to load vitamin C, to cultivate tomato callus clones from themselves.