Effects of Plant Growth Promoting Rhizobacteria on the Content of Abscisic Acid and Salt Resistance of Wheat Plants

Архипова, Т. Н.; Martynenko, Elena; Sharipova, G.V.; Kuzmina, L. Yu.; Иванов, И.И.; Garipova, M.I.; Kudoyarova, G. R.

doi:10.3390/plants9111429

Cited by 38 publications

(33 citation statements)

References 40 publications

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“…In this study, inoculation with WR10 significantly increased the total content of chlorophyll in leaves, indicating its positive effect on wheat nutrition and potentially on yield production ( Figure 1B ). In line with our observation, a large number of studies have reported an increase in chlorophyll content or a decrease in its loss by different PGPB in wheat grown under various conditions ( 53 – 56 ).…”

Section: Discussionsupporting

confidence: 92%

Microbial-Assisted Wheat Iron Biofortification Using Endophytic Bacillus altitudinis WR10

et al. 2021

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Microbial-assisted biofortification attracted much attention recently due to its sustainable and eco-friendly nature for improving nutrient content in wheat. An endophytic strain Bacillus altitudinis WR10, which showed sophistical regulation of iron (Fe) homeostasis in wheat seedlings, inspired us to test its potential for enhancing Fe biofortification in wheat grain. In this study, assays in vitro indicated that WR10 has versatile plant growth-promoting (PGP) traits and bioinformatic analysis predicted its non-pathogenicity. Two inoculation methods, namely, seed soaking and soil spraying, with 107 cfu/ml WR10 cells were applied once before sowing of wheat (Triticum aestivum L. cv. Zhoumai 36) in the field. After wheat maturation, evaluation of yield and nutrients showed a significant increase in the mean number of kernels per spike (KPS) and the content of total nitrogen (N), potassium (K), and Fe in grains. At the grain filling stage, the abundance of Bacillus spp. and the content of N, K, and Fe in the root, the stem, and the leaf were also increased in nearly all tissues, except Fe in the stem and the leaf. Further correlation analysis revealed a positive relationship between the total abundance of Bacillus spp. and the content of N, K, and Fe in grains. Seed staining confirmed the enhanced accumulation of Fe, especially in the embryo and the endosperm. Finally, using a hydroponic coculture model, qPCR quantification indicated effective colonization, internalization, translocation, and replication of strain WR10 in wheat within 48 h. Collectively, strain WR10 assisted successful Fe biofortification in wheat in the field, laying a foundation for further large-scale investigation of its applicability and effectiveness.

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Section: Discussionsupporting

confidence: 92%

Microbial-Assisted Wheat Iron Biofortification Using Endophytic Bacillus altitudinis WR10

et al. 2021

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“…Information about the capacity of bacteria to produce plant hormones is not sufficient for understanding the mechanism of their growth-promoting action and it is important to follow the bacterial effects on hormonal content in planta . The importance of bacterial effects on the hormone content in plants was demonstrated under salinity [ 13 ] and soil pollution with toxic metals [ 36 ]. However, less attention was paid to the hormonal status of plants growing in oil-contaminated soil.…”

Section: Discussionmentioning

confidence: 99%

“…However, despite the active study of bacterial effects on plants during the process of the bioremediation of soils contaminated with hydrocarbons, insufficient attention has been paid to some of its aspects. For example, the effects of oil-degrading bacteria capable of synthesizing plant hormones on the content and distribution of hormones in plants have not been studied, although in the case of some other stress factors (drought, salinity) such experiments have been carried out [ 12 , 13 ]. To fill this gap, we carried out a number of laboratory experiments [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Hydrocarbon-Oxidizing Bacteria on the Growth, Biochemical Characteristics, and Hormonal Status of Barley Plants and the Content of Petroleum Hydrocarbons in the Soil

Kuzina

Рафикова

Vysotskaya

et al. 2021

Plants

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Much attention is paid to the relationship between bacteria and plants in the process of the bioremediation of oil-contaminated soils, but the effect of petroleum degrading bacteria that synthesize phytohormones on the content and distribution of these compounds in plants is poorly studied. The goal of the present field experiment was to study the effects of hydrocarbon-oxidizing bacteria that produce auxins on the growth, biochemical characteristics, and hormonal status of barley plants in the presence of oil, as well as assessing the effect of bacteria and plants separately and in association with the content of oil hydrocarbons in the soil. The treatment of plants with strains of Enterobacter sp. UOM 3 and Pseudomonas hunanensis IB C7 led to an increase in the length and mass of roots and shoots and the leaf surface index, and an improvement in some parameters of the elements of the crop structure, which were suppressed by the pollutant. The most noticeable effect of bacteria on the plant hormonal system was a decrease in the accumulation of abscisic acid. The data obtained indicate that the introduction of microorganisms weakened the negative effects on plants under abiotic stress caused by the presence of oil. Plant-bacteria associations were more effective in reducing the content of hydrocarbons in the soil and increasing its microbiological activity than when either organism was used individually.

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“…Cytokinins (zeatin and its riboside) from sand eluate were purified as described [ 12 ]. Concentrations of hormones were measured by ELISA using the appropriate antibodies [ 39 , 40 , 41 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of Association of Barley Plants with Hydrocarbon-Degrading Bacteria on the Content of Soluble Organic Compounds in Clean and Oil-Contaminated Sand

Chetverikov

Vysotskaya

Kuzina

et al. 2021

Plants

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Plant-bacteria consortia are more effective in bioremediation of petroleum contaminated soil than when either organism is used individually. The reason for this is that plant root exudates promote growth and activity of oil degrading bacteria. However, insufficient attention has been paid to the ability of bacteria to influence root exudation. Therefore, the influence of barley plants and/or bacterial inoculation (Pseudomonas hunanensis IB C7 and Enterobacter sp. UOM 3) on the content of organic acids, sugars and plant hormones in the eluate from clean and oil-polluted sand was studied separately or in combination. These strains are capable of oxidizing hydrocarbons and synthesizing auxins. Concentrations of organic acids and sugars were determined using capillary electrophoresis, and hormones by enzyme-linked immunosorbent assays. In the absence of plants, no sugars were detected in the sand, confirming that root exudates are their main source. Introducing bacteria into the sand increased total contents of organic compounds both in the presence and absence of oil. This increase could be related to the increase in auxin amounts in the sand eluate, as well as in plants. The results indicate that bacteria are able to increase the level of root exudation. Since auxins can promote root exudation, bacterial production of this hormone is likely responsible for increased concentrations of soluble organic compounds in the sand. Bacterial mediation of root exudation by affecting plant hormonal status should be considered when choosing microorganisms for phytoremediation.

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Effects of Plant Growth Promoting Rhizobacteria on the Content of Abscisic Acid and Salt Resistance of Wheat Plants

Cited by 38 publications

References 40 publications

Microbial-Assisted Wheat Iron Biofortification Using Endophytic Bacillus altitudinis WR10

Microbial-Assisted Wheat Iron Biofortification Using Endophytic Bacillus altitudinis WR10

Influence of Hydrocarbon-Oxidizing Bacteria on the Growth, Biochemical Characteristics, and Hormonal Status of Barley Plants and the Content of Petroleum Hydrocarbons in the Soil

Effects of Association of Barley Plants with Hydrocarbon-Degrading Bacteria on the Content of Soluble Organic Compounds in Clean and Oil-Contaminated Sand

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