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

Lyudmila V. IgnatovaFaculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, KazakhstanAizhamal UsmanovaFaculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, KazakhstanYelena BrazhnikovaFaculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, KazakhstanAnel A. OmirbekovaFaculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, KazakhstanDilfuza EgamberdievaInstitute of Fundamental and Applied Research, National Research University TIIAME, Tashkent 100000, UzbekistanTogzhan D. MukashevaFaculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, KazakhstanAida KistaubayevaFaculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, KazakhstanIrina SavitskayaFaculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, KazakhstanTatyana A. KarpenyukFaculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, KazakhstanAlla V. GoncharovaFaculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan

Sustainabilityjournal2022en

ABI

Annotatsiya

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.

Hali tarjima qilinmagan

Mavzular

Plant-Microbe Interactions and Immunity Plant tissue culture and regeneration Legume Nitrogen Fixing Symbiosis

Identifikatorlar

DOI: 10.3390/su142315881

Iqtiboslar va manbalar

1 ta iqtibos 57 ta foydalanilgan manba

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