Authors:
G. G. Borisova,
M. G. Maleva,
M. Darkazanli,
A. V. Sobenin,
M. Yu. Karpukhin
Ural Federal University named after the first President of Russia B. N. Yeltsin, Ekaterinburg, Russia
Institute of Mining of the Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia
Ural State Agrarian University, Ekaterinburg, Russia
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract. One of the most promising approaches to solving the problem of balanced nutrition of the population is biofortification of plant materials and products. The purpose of the study was to evaluate the effect of two selective strains of Zn-solubilizing growth-stimulating rhizobacteria on the morphophysiological characteristics of Triticum aestivum L. seedlings (soft winter wheat, variety Elanchik) and the content of biogenic elements in them. Methods. The growth-stimulating properties of two PGPR strains were studied: Pantoea sp. STF1 and Pseudomonas sp. STF13, isolated from the rhizosphere soil of Tussilago farfara L., Asteraceae family. Under model conditions, the morphophysiological characteristics of wheat seedlings inoculated with these strains were assessed. The plants were grown in pot cultures for 18 days under controlled conditions: photoperiod 14 : 10 (day : night), temperature 25 ± 2 °C. The percentage of seed germination and seedling energy index were estimated. At the end of the experiment, the aboveground and underground biomass of seedlings, the content of photosynthetic pigments in leaves, macro- (nitrogen, phosphorus, potassium) and microelements (zinc, iron) in shoots were determined. Results. The ability of the studied rhizobacteria strains to solubilize inaccessible zinc and phosphorus compounds, to produce siderophores, indole-3-acetic acid and ammonia was proven. It was found that inoculation of wheat seeds with selective PGPR strains increased the seedling energy index (by 25 % compared to the control), contributed to an increase in their biomass, photosynthetic pigment content as well as the concentration of biogenic elements in seedlings and soil. Scientific novelty. For the first time, an assessment of the growth-stimulating activity and biofortification potential of two new rhizobacteria strains isolated in the Ural region was performed, and the possibility of their use for improving the growth of wheat seedlings and enriching them with biogenic elements was proven.
Keywords: Triticum aestivum L., PGP-rhizobacteria, photosynthetic pigments, biofortification, macro- and microelements
Acknowledgements. The study was supported and funded by Russian Science Foundation, Project No. № 23-26- 00292, https://rscf.ru/project/23-26-00292/
For citation: Borisova G. G., Maleva M. G., Darkazanli M., Sobenin A. V., Karpukhin M. Yu. Effect of Zn-solubilizing PGP-rhizobacteria on growth and content of biogenic elements in winter wheat seedlings under microcosm conditions. Agrarian Bulletin of the Urals. 2024; 24 (12): 1636‒1647. DOI: https://doi.org/10.32417/1997-4868- 2024-24-12-1636-1647. (In Russ.)
Download the full text of the article
