Skip Navigation
Skip to contents

Journal of Microbiology : Journal of Microbiology

OPEN ACCESS
SEARCH
Search
Advanced Search
mobile menu button

Articles

Page Path
HOME > J. Microbiol > Volume 59(8); 2021 > Article
Journal Article
Effect of exopolysaccharides of Paenibacillus polymyxa rhizobacteria on physiological and morphological variables of wheat seedlings
Irina V. Yegorenkova , Kristina V. Tregubova , Alexander I. Krasov , Nina V. Evseeva , Larisa Yu. Matora
Journal of Microbiology 2021;59(8):729-735.
DOI: https://doi.org/10.1007/s12275-021-0623-9
Published online: July 24, 2021
Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), Saratov 410049, Russian FederationInstitute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), Saratov 410049, Russian Federation
Corresponding author:  Irina V. Yegorenkova , Tel: +7-8452-970383, 
Received: 30 November 2020   • Revised: 4 June 2021   • Accepted: 15 June 2021
prev next
  • 51 Views
  • 0 Download
  • 11 Web of Science
  • 11 Crossref
  • 13 Scopus
Full Article

Abstract

Paenibacillus polymyxa is a promising plant-growth-promoting rhizobacterium that associates with a wide range of host plants, including agronomically important ones. Inoculation of wheat seedlings with P. polymyxa strains CCM 1465 and 92 was found to increase the mitotic index of the root cells 1.2- and 1.6-fold, respectively. Treatment of seedlings with the exopolysaccharides (EPSs) of these strains increased the mitotic index 1.9-fold (P. polymyxa CCM 1465) and 2.8-fold (P. polymyxa 92). These increases indicate activation of cell division in the root meristems. Analysis of the morphometric variables of the seedlings showed that P. polymyxa CCM 1465, P. polymyxa 92, and their EPSs promoted wheat growth, increasing root and shoot length up to 22% and root and shoot dry weight up to 28%, as compared with the control. In addition, both strains were found to intensely colonize the seedling root surface. Thus, P. polymyxa EPSs are active metabolites that, along with whole cells, are responsible for the contact interactions of the bacteria with wheat roots and are implicated in the induction of plant responses to these interactions. The strains used in this work are of interest for further study to broaden the existing understanding of the mechanisms of plant–bacterial interactions and to develop effective biofertilizers for agricultural purposes.

  • Cite this Article
    Cite this Article
    export Copy Download
    Close
    Download Citation
    Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.
    Format:
    • RIS — For EndNote, ProCite, RefWorks, and most other reference management software
    • BibTeX — For JabRef, BibDesk, and other BibTeX-specific software
    Include:
    • Citation for the content below
    Effect of exopolysaccharides of Paenibacillus polymyxa rhizobacteria on physiological and morphological variables of wheat seedlings
    J. Microbiol. 2021;59(8):729-735.   Published online July 24, 2021
    DOI: https://doi.org/10.1007/s12275-021-0623-9
    Close
Related articles
Journal of Microbiology : Journal of Microbiology
© The Microbiological Society of Korea.
TOP