Influence of chitosan and pectin oligosaccharides on the symbiotic interaction soybean-Bradyrhizobium.

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
Read Online Read More Add to Saved list
  • Additional Information
    • Subject Terms:
      BIOFERTILIZERS; BRADYRHIZOBIUM; SOYBEAN experiments; OLIGOSACCHARIDE analysis; SOYBEAN analysis; CHITOSAN; PECTINS
    • Abstract:
      Biofertilization is an alternative for the application of mineral fertilizers, and it guarantees the natural and innocuous production of crops. On the other hand, oligosaccharines exert proven biological effects on the growth and development of plants. In this paper, the influence of two oligosaccharines (partially hydrolyzed chitosan and a mixture of oligogalacturonides) was studied in the cell multiplication of Bradyrhizobium elkanii ICA 8001 when added to the microbial culture medium. Besides, two experiments were conducted to assess the influence of the oligosaccharines on indicators of nodulation of soybean plantlets. They were performed through two application forms: addition to the plant culture medium and seed embedment, previous to the sowing (experiment 1) and seed embedded in solutions containing three concentrations of oligosaccharides (experiment 2). It was evidenced, in the dynamics of multiplication, that only the mixture of oligopectates affected the cell growth, whereas both derivatives reduced the cell viability. The addition of compounds to the plant culture medium (experiment 1) induced the larger number of nodules, without differences between them and the inoculated control. However, there was effect of the compounds when embedding the seeds. By the seeds were embedded in solutions with concentrations of oligosaccharides (experiment 2), the partially-hydrolyzed chitosan induced larger number of nodules with 13.1 and 11.7 to 100 and 10 mg L-1, respectively. This surpassed the treatments with mixture of oligogalacturonides. The dry matter of the nodules was increased when applying the oligosaccharides and the three doses of chitosan were noteworthy. [ABSTRACT FROM AUTHOR]
    • Abstract:
      Copyright of Cuban Journal of Agricultural Science is the property of CENTIC-MES and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)