  The genetic programming of biosynthesis of biogenic magnetic nanoparticles
(BMNs) in plants was revealed by methods of comparative genomics. The samples
of leaves and the root of Nicotiana tabacum, the stems and tubers of Solanum
tuberosum and the stems of pea Pisum sativum were examined by scanning probe
microscopy (in atomic force and magnetic power modes), and it was found that
the BMNs are located in the form of chains in the wall of the phloem sieve
tubes (ie, the vascular tissue of plants). Such a localization of BMNs supports
the idea that the chains of BMNs in different organs of plants have common
metabolic functions. Stray gradient magnetic fields about several thousand Oe,
which are created by chains of BMNs, can significantly affect the processes of
mass transfer near the membrane of vesicles, granules, organelles, structural
elements of the membrane, and others. This process is enhanced in plants when
artificial magnetite is added to the soil.
