4.7 Article

Bacterial Endophytes as a Promising Approach to Enhance the Growth and Accumulation of Bioactive Metabolites of Three Species of Chenopodium Sprouts

期刊

PLANTS-BASEL
卷 10, 期 12, 页码 -

出版社

MDPI
DOI: 10.3390/plants10122745

关键词

bacterial endophytes; Chenopodium sp; sprouts; photosynthesis; amino acid metabolism; phenolics metabolism; antioxidant; anti-inflammatory

资金

  1. Ministry of Education in Saudi Arabia [IFPHI-211-140-2020]
  2. King Abdulaziz University, DSR, Jeddah, Saudi Arabia

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Sprouts from Chenopodium plants are enhanced in growth and nutritive value through inoculation of the endophytic bacterium Endo 2 (strain JSA11), leading to increased accumulation of bioactive metabolites such as antioxidants, vitamins, unsaturated fatty acids, and essential amino acids. The treatment also boosts antioxidant, antibacterial, and anti-inflammatory activities in the sprouts, demonstrating the potential of Endo 2 (strain JSA11) in enhancing the bioactive contents and biological properties of Chenopodium sprouts.
Sprouts are regarded as an untapped source of bioactive components that display various biological properties. Endophytic bacterium inoculation can enhance plant chemical composition and improve its nutritional quality. Herein, six endophytes (Endo 1 to Endo 6) were isolated from Chenopodium plants and morphologically and biochemically identified. Then, the most active isolate Endo 2 (strain JSA11) was employed to enhance the growth and nutritive value of the sprouts of three Chenopodium species, i.e., C. ambrosoides, C. ficifolium, and C. botrys. Endo 2 (strain JSA11) induced photosynthesis and the mineral uptake, which can explain the high biomass accumulation. Endo 2 (strain JSA11) improved the nutritive values of the treated sprouts through bioactive metabolite (antioxidants, vitamins, unsaturated fatty acid, and essential amino acids) accumulation. These increases were correlated with increased amino acid levels and phenolic metabolism. Consequently, the antioxidant activity of the Endo 2 (strain JSA11)-treated Chenopodium sprouts was enhanced. Moreover, Endo 2 (strain JSA11) increased the antibacterial activity against several pathogenic bacteria and the anti-inflammatory activities as evidenced by the reduced activity of cyclooxygenase and lipoxygenase. Overall, the Endo 2 (strain JSA11) treatment is a successful technique to enhance the bioactive contents and biological properties of Chenopodium sprouts.

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