Antioxidant System Activity in Roots and Shoots of Bean Cultivars in Response to Seed Treatment with Auxin as a Potential Model of Interaction with Endophytic Bacteria.

Plant growth-promoting endophytic bacteria (PGPEB), producing auxins, are offered for a promising eco-friendly crop production. Precise bacterial strain selection is essential to ensure consistent and effective plant growth and resilience. Creating a model for the optimal dose-dependent interactions between PGPEB and hosts is necessary for understanding the mechanisms of high-precision selection of the inoculant composition to enhance bacterial preparations' efficacy.

Predicting Field Effectiveness of Endophytic Inoculants for Common Bean Using Morphometric and Biochemical Markers.

According to four field experiments, after the inoculation of L. cultivar Ufimskaya with the commercial strain 26D and the promising strain 10-4, it was found that inoculation with 10-4 improved seed productivity (SP) by 31-41% per plant, but only in dry years. In contrast, all 4 years of inoculation with 26D were ineffective or neutral.

Contribution of Antioxidant System Components to the Long-Term Physiological and Protective Effect of Salicylic Acid on Wheat under Salinity Conditions.

Salicylic acid (SA) plays a crucial role in regulating plant growth and development and mitigating the negative effects of various stresses, including salinity. In this study, the effect of 50 μM SA on the physiological and biochemical parameters of wheat plants under normal and stress conditions was investigated. The results showed that on the 28th day of the growing season, SA pretreatment continued to stimulate the growth of wheat plants.

The Contribution of Hormonal Changes to the Protective Effect of Endophytic Bacterium on Two Wheat Genotypes with Contrasting Drought Sensitivities under Osmotic Stress.

A comparative analysis was conducted to evaluate the effects of seed priming with endophytic bacterium 10-4 (BS) on the hormonal system and cell wall tolerance (lipid peroxidation (LPO), electrolyte leakage (EL), and root lignin deposition) of two L. (wheat) varieties with contrasting drought sensitivities (Ekada 70-drought-tolerant (DT); Salavat Yulaev-drought-sensitive (DS)) under normal conditions and 12% polyethylene glycol-6000 (PEG)-induced osmotic stress. The results showed that under normal conditions, the growth stimulation in wheat plants by BS was attributed to changes in the hormonal balance, particularly an increase in endogenous indole-3-acetic acid (IAA) accumulation.

Nitric Oxide (NO) Improves Wheat Growth under Dehydration Conditions by Regulating Phytohormone Levels and Induction of the Expression of the Dehydrin Gene.

Nitric oxide (NO) is a universal signaling molecule with important regulatory functions in the plant's life cycle and adaptation to a wide spectrum of environmental stresses including drought. The effect of pre-sowing seed treatment with the donor of NO sodium nitroprusside (SNP, 200 μM) on wheat L. plants subjected to dehydration (PEG-8000, 12%) was investigated.

The Effects of Seed Pretreatment with Endophytic Bacteria on the Water Balance of Spring and Winter Wheat Seedlings under Short-Time Water Deficit.

We investigated the effect of pre-sowing seed treatment with endophytic 10-4 () on spring and winter wheat ( L.; cultivars Ekada-70 (Ek) and Scepter (Sc), respectively) growth and tolerance under 1-24 h of drought stress, modulated by 12% polyethylene glycol 6000 (PEG). The results showed that drought decreased transpiration intensity (TI), root relative water content (RWC), osmotic potential (Ψ) of cell sap, and induced proline accumulation and electrolyte leakage (EL) in both wheat cultivars.

Endophytic Plant Growth-Promoting Bacterium Reduces the Toxic Effect of Cadmium on Wheat Plants.

Heavy metal ions, in particular cadmium (Cd), have a negative impact on the growth and productivity of major crops, including wheat. The use of environmentally friendly approaches, in particular, bacteria that have a growth-stimulating and protective effect, can increase the resistance of plants. The effects of the pre-sowing seed treatment with the plant growth-promoting endophyte 10-4 (BS) on cadmium acetate (Cd)-stressed L.

Seed Treatment with Sodium Nitroprusside Ensures a Long-Term Physiological and Protective Effect on Wheat under Salinity.

Although salinity inhibits plant growth, the use of a nitric oxide (NO) gasotransmitter can reduce its negative effects. In this study, the influence of 200 μM sodium nitroprusside (SNP) (donor of NO) on wheat plants ( L., cv.

Components of the Phenylpropanoid Pathway in the Implementation of the Protective Effect of Sodium Nitroprusside on Wheat under Salinity.

Nitric oxide (NO) is a multifunctional, gaseous signaling molecule implicated in both physiological and protective responses to biotic and abiotic stresses, including salinity. In this work, we studied the effects of 200 µM exogenous sodium nitroprusside (SNP, a donor of NO) on the components of the phenylpropanoid pathway, such as lignin and salicylic acid (SA), and its relationship with wheat seedling growth under normal and salinity (2% NaCl) conditions. It was established that exogenous SNP contributed to the accumulation of endogenous SA and increased the level of transcription of the pathogenesis-related protein 1 () gene.

Effect of Seed Priming with Endophytic on Some Physio-Biochemical Parameters of Two Wheat Varieties Exposed to Drought after Selective Herbicide Application.

Wheat plants are frequently exposed to combined herbicide and drought stress (HDS) which induces complex responses negatively, affects productivity, and is becoming more exacerbated with current climate change. In this work, we studied the influence of seed priming with endophytic bacteria (strains 104 and 26D) on growth and tolerance of two wheat ( L.) varieties (E70-drought tolerant; SY-drought susceptible) exposed to soil drought after application of selective herbicide Sekator Turbo in pot experiments under controlled conditions; 17-day-old plants sprayed with herbicide and after 3 days were subjected to soil drought by stopping irrigating the plants for 7 days with subsequent resumption of normal irrigation (recovery).

Role of Endogenous Salicylic Acid as a Hormonal Intermediate in the Bacterial Endophyte -Induced Protection of Wheat Genotypes Contrasting in Drought Susceptibility under Dehydration.

Endophytic is a non-pathogenic beneficial bacterium which promotes plant growth and tolerance to abiotic stresses, including drought. However, the underlying physiological mechanisms are not well understood. In this study, the potential role that endogenous salicylic acid (SA) plays in regulating endophytic -mediated drought tolerance in wheat ( L.

Effects of Thy2 on the Growth and Tolerance to Cadmium Stress of Wheat Plants.

Cadmium (Cd) stress is an obstacle for crop production, quality crops, and sustainable agriculture. An important role is played by the application of eco-friendly approaches to improve plant growth and stress tolerance. In the current study, a pre-sowing seed treatment with strains, isolated from the leguminous plants (strain Pvu5), (strain VSy12), (strain Thy2), and (strain TPr4), demonstrated different effects on wheat ( L.

Regulatory Role of Circadian Clocks on ABA Production and Signaling, Stomatal Responses, and Water-Use Efficiency under Water-Deficit Conditions.

Plants deploy molecular, physiological, and anatomical adaptations to cope with long-term water-deficit exposure, and some of these processes are controlled by circadian clocks. Circadian clocks are endogenous timekeepers that autonomously modulate biological systems over the course of the day-night cycle. Plants' responses to water deficiency vary with the time of the day.

Contribution of Ascorbate and Glutathione in Endobacteria -Mediated Drought Tolerance in Two L. Genotypes Contrasting in Drought Sensitivity.

We evaluated the effect of endobacteria (strain 10-4) as a co-inoculant for promoting plant growth and redox metabolism in two contrasting genotypes of L. (wheat): Ekada70 (drought tolerant (DT)) and Salavat Yulaev (drought susceptible (DS)) in early stages of adaptation to drought (12% PEG-6000). Results revealed that drought reduced growth and dramatically augmented oxidative stress markers, i.

Seed priming with endophytic Bacillus subtilis strain-specifically improves growth of Phaseolus vulgaris plants under normal and salinity conditions and exerts anti-stress effect through induced lignin deposition in roots and decreased oxidative and osmotic damages.

Bacillus subtilis is one of the non-pathogenic beneficial bacteria that promote plant growth and stress tolerance. In the present study, we revealed that seed priming with endophytic B. subtilis (strains 10-4, 26D) improved Phaseolus vulgaris L.

Seed Priming with Endophytic Modulates Physiological Responses of Two Different L. Cultivars under Drought Stress.

The protective effects against drought stress of the endophytic bacterium 10-4 were measured by studying the priming response in two wheat ( L.)-Ekada70 (E70) and Salavat Yulaev (SY)-lines, tolerant and susceptible to drought, respectively. 10-4 improved germination and growth parameters under normal conditions in both cultivars with the most pronounced effect observed in cv.

The Effect of Endophytic Bacteria and Salicylic Acid on Some Resistance and Quality Traits of Stored L. Tubers Infected with Fusarium Dry Rot.

The effect of endophytic (strains 10-4, 26D) and their compositions withsalicylic acid (SA) on some resistance and quality traits of stored potatoes infected with Fusariumdry rot were studied. The experiments were carried out on hydroponically grown L. tubers that were infected before storage with and coated with 10-4, 26D with and without exogenous SA, and then stored for six months.

Effects of Endophytic and Salicylic Acid on Postharvest Diseases () Development in Stored Potato Tubers.

Postharvest diseases of potato lead to significant food and economic losses worldwide. The exogenous application of eco-friendly methods plays an important role in the control of postharvest decay. In this work the effects of endophytic bacteria (10-4, 26D) were studied in the context of two application parameters: concentration, with a range between 10-10 CFU/mL tested, and synergistic effects of the signal molecule salicylic acid (SA) (0.

Calcium signaling and salt tolerance are diversely entwined in plants.

In plants dehydration imposed by salinity can invoke physical changes at the interface of the plasma membrane and cell wall. Changes in hydrostatic pressure activate ion channels and cause depolarization of the plasma membrane due to disturbance in ion transport. During the initial phases of salinity stress, the relatively high osmotic potential of the rhizosphere enforces the plant to use a diverse spectrum of strategies to optimize water and nutrient uptake.

Bacillus Spp.: Efficient Biotic Strategy to Control Postharvest Diseases of Fruits and Vegetables.

Postharvest diseases significantly reduce the shelf-life of harvested fruits/vegetables worldwide. spp. are considered to be an eco-friendly and bio-safe alternative to traditional chemical fungicides/bactericides due to their intrinsic ability to induce native anti-stress pathways in plants.

Diverse role of γ-aminobutyric acid in dynamic plant cell responses.

Gamma-aminobutyric acid (GABA), a four-carbon non-protein amino acid, is found in most prokaryotic and eukaryotic organisms. Although, ample research into GABA has occurred in mammals as it is a major inhibitory neurotransmitter; in plants, a role for GABA has often been suggested as a metabolite that changes under stress rather than as a signal, as no receptor or motif for GABA binding was identified until recently and many aspects of its biological function (ranging from perception to function) remain to be answered. In this review, flexible properties of GABA in regulation of plant responses to various environmental biotic and abiotic stresses and its integration in plant growth and development either as a metabolite or a signaling molecule are discussed.

Effects of growth under different light spectra on the subsequent high light tolerance in rose plants.

Photosynthesis is defined as a light-dependent process; however, it is negatively influenced by high light (HL) intensities. To investigate whether the memory of growth under monochromatic or combinational lights can influence plant responses to HL, rose plants were grown under different light spectra [including red (R), blue (B), 70:30 % red:blue (RB) and white (W)] and were exposed to HL (1500 μmol m s) for 12 h. Polyphasic chlorophyll a fluorescence (OJIP) transients revealed that although monochromatic R- and B-grown plants performed well under control conditions, the functionality of their electron transport system was more sensitive to HL than that of the RB- and W-grown plants.

Effects of Bacillus subtilis on some physiological and biochemical parameters of Triticum aestivum L. (wheat) under salinity.

Endophytic strain Bacillus subtilis (B. subtilis) 10-4, producing indole-3-acetic acid (IAA) and siderofores but not active in phosphate solubilization, exerted a protective effect on Triticum aestivum L. (wheat) plant grown under salinity (2% NaCl) stress.