ADAPTATION AND TOLERANCE OF WHEAT PLANTS TO DROUGHT MEDIATED BY NATURAL GROWTH REGULATORS Bacillus spp.: MECHANISMS AND PRACTICAL IMPORTANCE (review)

Lastochkina, Oksana

doi:10.15389/agrobiology.2021.5.843eng

Cited by 10 publications

(26 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

Section: Introductionmentioning

confidence: 99%

“…Seed priming with Bacillus subtilis , an endophytic plant growth-promoting bacteria (PGPB), has been shown to promote plant growth and tolerance, mitigating the effect of drought stress [ 6 , 7 , 8 , 9 , 10 ]. The growth-stimulating and protective effects of B. subtilis under various environmental stresses have been demonstrated in many plants [ 11 , 12 ], including wheat [ 10 , 13 , 14 , 15 ]. PGPB B. subtilis promoted the growth and development of plants under various biotic/abiotic conditions indirectly or directly by initiating a wide range of defense responses associated with plant resistance/tolerance, thus improving crop productivity [ 8 , 9 , 10 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…The growth-stimulating and protective effects of B. subtilis under various environmental stresses have been demonstrated in many plants [ 11 , 12 ], including wheat [ 10 , 13 , 14 , 15 ]. PGPB B. subtilis promoted the growth and development of plants under various biotic/abiotic conditions indirectly or directly by initiating a wide range of defense responses associated with plant resistance/tolerance, thus improving crop productivity [ 8 , 9 , 10 , 16 , 17 ]. The known mechanisms behind the influence of Bacillus spp.…”

Section: Introductionmentioning

confidence: 99%

“…The known mechanisms behind the influence of Bacillus spp. on host plants include: (i) competition for space/nutrients with phytopathogenic microorganisms; (ii) improvement of macro/-micronutrient bioavailability (i.e., atmospheric N fixation, P solubilization, and siderophore production) [ 18 , 19 , 20 , 21 , 22 ]; (iii) the production of different bioactive substances (i.e., compounds with antibiotic and phytohormone-like activities) and signaling molecules; (iv) the regulation of plant hormone levels (i.e., indole-3-acetic acid, cytokinins, abscisic acid, salicylic acid (SA)) [ 9 , 10 , 13 , 23 , 24 ]; and (v) the induction of plant systemic resistance and tolerance [ 6 , 7 , 15 , 16 , 25 , 26 , 27 ]. The efficacy of microbial inoculants depends on a variety of strain-dependent factors such as the ability to produce multiple plant growth-promoting traits and the ability to colonize the surface (epiphytes) or interior (endophytes) of the plant.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Lastochkina

Ivanov

Петрова

et al. 2022

Plants

View full text Add to dashboard Cite

Endophytic Bacillus subtilis 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 B. subtilis-mediated drought tolerance in wheat (Triticum aestivum L.) was examined. The study was conducted on genotypes with contrasting levels of intrinsic drought tolerance (drought-tolerant (DT) cv. Ekada70; drought-susceptible (DS) cv. Salavat Yulaev). It was revealed that B. subtilis 10-4 promoted endogenous SA accumulation and increased the relative level of transcripts of the PR-1 gene, a marker of the SA-dependent defense pathway, but two wheat cultivars responded differently, with the highest levels exhibited in DT wheat seedlings. These had a positive correlation with the ability of strain 10-4 to effectively protect DT wheat seedlings against drought injury by decreasing osmotic and oxidative damages (i.e., proline, water holding capacity (WHC), and malondialdehyde (MDA)). However, the use of the SA biosynthesis inhibitor 1-aminobenzotriazole prevented endogenous SA accumulation under normal conditions and the maintenance of its increased level under stress as well as abolished the effects of B. subtilis treatment. Particularly, the suppression of strain 10-4-induced effects on proline and WHC, which are both contributing factors to dehydration tolerance, was found. Moreover, the prevention of strain 10-4-induced wheat tolerance to the adverse impacts of drought, as judged by the degree of membrane lipid peroxidation (MDA) and plant growth (length, biomass), was revealed. Thus, these data provide an argument in favor of a key role of endogenous SA as a hormone intermediate in triggering the defense responses by B. subtilis 10-4, which also afford the foundation for the development of the bacterial-induced tolerance of these two different wheat genotypes under dehydration.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Lastochkina

Ivanov

Петрова

et al. 2022

Plants

View full text Add to dashboard Cite

show abstract

“…Ячмень выращивается во многих развивающихся странах, где часто подвергается сильной засухе, что существенно влияет на его продуктивность [4]. Согласно прогнозам, интенсивность засухи будет постепенно увеличиваться, что в сочетании с ростом населения планеты лишь усугубляет эту проблему и угрожает продовольственной безопасности страны [5].…”

Section: Introductionunclassified

Effect of biofertilizers and osmotic stress on morphological parameters of spring barley seedlings

Panfilov

Abdrashitov²

2022

Vestn. Ross. univ. družby nar., Ser. Agron. životnovod.

View full text Add to dashboard Cite

One of ways to increase resistance of agricultural plants to abiotic stresses is the use of biofertilizers with anti-stress and growth-regulating properties. They improve absorption of nitrogen and phosphorus from organic fertilizers and soil. The purpose of the research was to study sowing qualities of seeds, morphological indicators of spring barley seedlings after presowing seed treatment with biofertilizers under conditions of sufficient humidification and osmotic stress. The laboratory experiment was carried out to study the effect of biofertilizers on seedlings of spring barley ( Hordeum vulgare L.) cv. Gubernatorsky under conditions of sufficient and insufficient humidification. The barley seeds were treated once according to the following scheme: 1. control (distilled water) 10 L/t; 2. Gumi 20 M potash (0.4 L/t); 3. Borogum-M complex (0.2 L/t); 4. PEG 6000 (100 g/L); 5. Gumi 20 M (0.4 L/t) + PEG 6000 (100 g/L); 6. Borogum-M complex (0.2 L/t) + PEG 6000 (100 g/L). Treatment of spring barley seeds with biofertilizers increased the germination rate and germination capacity by 35 and 2 %, respectively. When modeling drought using PEG-6000, the sowing qualities of seeds decreased by 4 %. Under conditions of sufficient humidification, the studied biofertilizers had a complex positive effect on shoot and root weight of barley seedlings. In addition, the average length of roots, shoots and the total root length increased. The number of roots did not change significantly. Lack of moisture decreased the effectiveness of Borogum-M complex biofertilizer, while Gumi 20 M potassium biofertilizer had a positive effect on the parameters of barley seedlings under water stress conditions.

show abstract

Biostimulants of growth in the production process of grain crops

Seregina,

Anka,

Golovin

et al. 2024

BIO Web Conf.

View full text Add to dashboard Cite

The role of biostimulants of growth of various natures in the production process of spring wheat variety Zlata was studied, depending on nitrogen nutrition conditions, and was carried out under field conditions.The experiments assessed the activity of the plant assimilation apparatus and the formation of the yield of wheat plants using biostimulants of various natures by spraying vegetative plants. The studies found that the greatest effectiveness of the studied drugs was observed under conditions of optimal provision of nitrogen nutrition to wheat plants. It has been established that the preparations Epin-Extra, Emistim and Hardy increase the efficiency of the assimilation apparatus of spring wheat plants, which led to the receipt of large increases in grain weight under conditions of optimal provision of wheat plants with nitrogen nutrition.

show abstract

ADAPTATION AND TOLERANCE OF WHEAT PLANTS TO DROUGHT MEDIATED BY NATURAL GROWTH REGULATORS Bacillus spp.: MECHANISMS AND PRACTICAL IMPORTANCE (review)

Cited by 10 publications

References 83 publications

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

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

Effect of biofertilizers and osmotic stress on morphological parameters of spring barley seedlings

Biostimulants of growth in the production process of grain crops

Contact Info

Product

Resources

About