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Doklady Biological Sciences

, Volume 483, Issue 1, pp 239–242 | Cite as

Silver-Containing Humic Substance-Based Nanocomposites—Agents for Healing of Potatoes from the Ring Rot

  • I. A. Graskova
  • A. I. PerfilevaEmail author
  • O. A. Nozhkina
  • B. G. Sukhov
  • G. P. Aleksandrova
  • B. A. Trofimov
General Biology
  • 4 Downloads

Abstract

The influence of silver-containing humic substance (HS)-based nanocomposites (NCs) obtained from mud, shale, and coals of three kinds of deposits in Mongolia on the viability and ability to biofilm formation of a phytopathogenic gram-positive bacterium Clavibacter michiganensis subsp. sepedonicus (Cms), as well as peroxidase activity and potato plant growth in vitro, has been investigated. The maximum reduction of the viability of bacterial cells was found in the case of incubation with HS-mu/Ag NC and HS-coal/Ag NC. It was found that HSs, including HS-mu and HS-sl, and NCs synthesized on the base of these HSs, HS-mud/Ag NC and HS-sl/Ag NC reduce more than twofold the activity of peroxidase in potato tissues. It was also found that HS-co and HS-coal/Ag NC stimulate the potato peroxidase activity, as well as biofilm formation of Cms bacterium. No negative effect of the studied NCs on the growth of potato has been revealed. Moreover, NC HS-mud/Ag based on mud had a stimulating effect on leaf formation in plants.

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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • I. A. Graskova
    • 1
    • 3
  • A. I. Perfileva
    • 1
    Email author
  • O. A. Nozhkina
    • 1
  • B. G. Sukhov
    • 2
    • 3
  • G. P. Aleksandrova
    • 2
  • B. A. Trofimov
    • 2
  1. 1.Siberian Institute of Plant Physiology and Biochemistry, Siberian BranchRussian Academy of SciencesIrkutskRussia
  2. 2.Irkutsk Institute of Chemistry, Siberian BranchRussian Academy of SciencesIrkutskRussia
  3. 3.Irkutsk Scientific Center, Siberian BranchRussian Academy of SciencesIrkutskRussia

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