Isoflavone content and antioxidant activity of soybean inoculated with plant-growth promoting rhizobacteria

Plant-growth promoting rhizobacteria (PGPR) elicit activation of the phenylpropanoid pathway in plants, which leads to phenolics production and enhanced antioxidant capacity. The purpose of this work was to assess the anti­oxidant activity of soybean plants, Glycine max L., inoculated with PGPR (iso...

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Bibliographic Details
Published in:Journal of the Serbian Chemical Society 2016-01, Vol.81 (11), p.1239-1249
Main Authors: Kiprovski, Biljana, Malenčić, Đorđe, Đurić, Simonida, Bursać, Mira, Cvejić, Jelena, Sikora, Vladimir
Format: Article
Language:English
Subjects:
Antioxidants
Azotobacter
Flavonoids
Glycine
Glycine max
Inoculum
PAL
PGPR
phenolics
Plants (botany)
Soybeans
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Summary:Plant-growth promoting rhizobacteria (PGPR) elicit activation of the phenylpropanoid pathway in plants, which leads to phenolics production and enhanced antioxidant capacity. The purpose of this work was to assess the anti­oxidant activity of soybean plants, Glycine max L., inoculated with PGPR (iso­lates of Azotobacter chroococcum, Streptomyces sp. and mixture of these) during plant development, as well as the yield of inoculated soybean plants. PGPR applied in the experiment stimulated flavonoids and isoflavone syn­thesis, which enhanced the non-enzymatic antioxidant ability of the soybean plants. Moreover, PGPRs stimulated the accumulation of daidzein and genistin in soybean seedlings (5-fold and 2-fold compared to the control values, res­pect­ively). The mixture of PGPRs had a positive impact on the antioxidant activity (10–20 % higher activity) and yield components of soybean, which proposed this inoculum as possibly a potent bio-fertilizer in soybean pro­duction.
ISSN:0352-5139
1820-7421
DOI:10.2298/JSC160422070K