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Plant Probiotic Endophytic Pseudomonas flavescens D5 Strain for Protection of Barley Plants from Salt Stress

Author

Listed:
  • Lyudmila Ignatova

    (Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan)

  • Aizhamal Usmanova

    (Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan)

  • Yelena Brazhnikova

    (Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan)

  • Anel Omirbekova

    (Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan)

  • Dilfuza Egamberdieva

    (Leibniz Centre for Agricultural Landscape Research (ZALF), D-15374 Müncheberg, Germany
    Institute of Fundamental and Applied Research, National Research University TIIAME, Tashkent 100000, Uzbekistan)

  • Togzhan Mukasheva

    (Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan)

  • Aida Kistaubayeva

    (Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan)

  • Irina Savitskaya

    (Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan)

  • Tatyana Karpenyuk

    (Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan)

  • Alla Goncharova

    (Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan)

Abstract

Soil salinity has become a global issue that is directly related to land degradation and results in many changes in climate, ecosystem services, and biodiversity. The present study focuses on the investigation of beneficial properties of a plant probiotic bacterial strain as an eco-friendly and sustainable approach to promote crop growth in saline soil. The endophytic halotolerant strain Pseudomonas flavescens D5 isolated from common chicory ( Cichorium intybus L.) was able to grow on a medium containing 15% NaCl; produced indole-3-acetic acid (45.2 μg mL −1 ) and polyhydroxyalkanoate (1.72 g L −1 ); and had amylolytic, cellulolytic, and proteolytic activities. Polyhydroxyalkanoate had a pronounced antifungal activity against Fusarium graminearum, F. solani, F. oxysporum, and Alternaria alternata . Under salt stress conditions, inoculation with Ps. flavescens D5 increased the shoot biomass of barley plants by 8–30%, root biomass by 7–20%, chlorophyll a by 18–52%, and chlorophyll b by 7–15%. The content of proline decreased by 1.5–1.8 times. An increase in the activity of antioxidant enzymes (catalase, guaiacol peroxidase, and ascorbate peroxidase) was determined. In inoculated plants growing in saline soil, the content of Na + ions was lower by up to 54.8% compared to control. This strain is promising for stimulating plant growth and protecting them from diseases and other adverse environmental factors, including salt stress.

Suggested Citation

  • Lyudmila Ignatova & Aizhamal Usmanova & Yelena Brazhnikova & Anel Omirbekova & Dilfuza Egamberdieva & Togzhan Mukasheva & Aida Kistaubayeva & Irina Savitskaya & Tatyana Karpenyuk & Alla Goncharova, 2022. "Plant Probiotic Endophytic Pseudomonas flavescens D5 Strain for Protection of Barley Plants from Salt Stress," Sustainability, MDPI, vol. 14(23), pages 1-14, November.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:23:p:15881-:d:987553
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    References listed on IDEAS

    as
    1. Chintan Kapadia & R. Z. Sayyed & Hesham Ali El Enshasy & Harihar Vaidya & Deepshika Sharma & Nafisa Patel & Roslinda Abd Malek & Asad Syed & Abdallah M. Elgorban & Khurshid Ahmad & Ali Tan Kee Zuan, 2021. "Halotolerant Microbial Consortia for Sustainable Mitigation of Salinity Stress, Growth Promotion, and Mineral Uptake in Tomato Plants and Soil Nutrient Enrichment," Sustainability, MDPI, vol. 13(15), pages 1-14, July.
    Full references (including those not matched with items on IDEAS)

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