Ochrobactrum sp. NBRISH6 Inoculation Enhances Zea mays Productivity, Mitigating Soil Alkalinity and Plant Immune Response

Mishra, Shashank Kumar; Misra, Sankalp; Dixit, Vijay Kant; Kar, Srishti; Chauhan, Puneet Singh

doi:10.1007/s00284-023-03441-7

Cited by 4 publications

(3 citation statements)

References 67 publications

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“…Likewise, it promotes the activity of enzymatic and non-enzymatic antioxidant systems to combat oxidative stress [15,16] as well as the expression of hormones and a diversity of metabolites [17] derived from transcriptional modifications [18][19][20][21]. Alternatives in the management of crops developed in these environments include grafting [22], application of Ca 2+ -based fertilizers (to replace Na + ions) [23], micronutrients [24], nanotechnology [25], biochar [26], microorganisms [27], growth regulators [28], and genetic engineering [29,30].…”

Section: àmentioning

confidence: 99%

“…Similarly, biochar combined with daily fertigation in alkaline soil can improve cucumber yield [101]. Similarly, microorganisms are another window of action to mitigate alkalinity damage, as they increase antioxidant enzymes and modify plant gene expression [108], regulate enzyme activity and soil microbial load [27,109], decrease pH [110], and regulate soil ionic balance [111,112], improving nutrient availability [113]. All of these management techniques improve plant productivity and promote better fruit quality by increasing the total soluble solids, acid ratio, sugar, and phenol content [42,114].…”

Section: Alkalinity Management Strategiesmentioning

confidence: 99%

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Underlying Mechanisms of Action to Improve Plant Growth and Fruit Quality in Crops under Alkaline Stress

Pérez-Labrada,

Luis Espinoza-Acosta,

Bárcenas-Santana

et al. 2024

Abiotic Stress in Crop Plants - Ecophysiological Responses and Molecular Approaches

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The high content of carbonates (CO32−), bicarbonate (HCO3−), and high pH (>7.5) causes environmental pressure and alkaline stress, impairs plant growth and development, and limits fruit quality by causing osmotic alterations and hindering nutrient absorption. Because of alkaline stress, plants are in an oxidative environment that alters their metabolic processes, impairing their growth, development, and fruit quality. In response to this situation, plants use several mechanisms to cope, including the alteration of osmolytes, induction of transcription factors, signal transduction, hormone synthesis, alteration of the antioxidant system, and differential gene expression. Current knowledge and understanding of the underlying mechanisms that promote alkalinity tolerance in crops may lead to new production strategies to improve crop quality under these conditions, while ensuring food security.

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Section: àmentioning

confidence: 99%

Section: Alkalinity Management Strategiesmentioning

confidence: 99%

Underlying Mechanisms of Action to Improve Plant Growth and Fruit Quality in Crops under Alkaline Stress

Pérez-Labrada,

Luis Espinoza-Acosta,

Bárcenas-Santana

et al. 2024

Abiotic Stress in Crop Plants - Ecophysiological Responses and Molecular Approaches

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“…Th ey are usually found in wastewater, soil, and plant rhizosphere (Mahmood et al, 2009;Huber et al, 2010;Whitman et al, 2018). Th ey can be plant or animal symbionts (Imran et al, 2014;Wu et al, 2016;Hu et al, 2020;Mishra et al, 2023). Among the representatives of the genus, there are pathogens of opportunistic infections (Rastogi & Mathur, 2017;Kannan et al, 2022) but there are also species resistant to heavy metals: Ochrobactrum cytisi Azn6.2 (Cu, Cd, and Zn) (Rodríguez-Llorente et al, 2010), Ochrobactrum tritici 5bvl1, Ochrobactrum sp.…”

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confidence: 99%

Adaptation of Ochrobactrum rhizosphaerae IMV B-7956 Bacteria to the Influence of Copper (II) Chloride

Komplikevych,

Maslovska,

Moravska

et al. 2024

Mikrobiol. Z.

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In technologically altered habitats, an increased content of organic compounds, nitrogen, phosphorus, sulfur compounds, antibiotic substances, etc. is found. Therefore, microorganisms that are systematically exposed to various stressors have developed adaptation mechanisms. The strain Ochrobactrum rhizosphaerae IMV B-7956, isolated from the infiltrate lakes of the Lviv solid waste landfill, is resistant to copper, chromium, manganese, and iron in concentrations exceeding the maximum permissible concentrations. The work aimed to study the response of O. rhizosphaerae IMV B-7956 cells to CuCl2 exposure by detecting changes in the content of lipid peroxidation products, products of the oxidative modification of proteins, activity of antioxidant defense system enzymes, and synthesis of extracellular polymers. Methods. To study the effect of CuCl2 on prooxidant indicators and the activity of enzymes of the antioxidant defense system, bacteria were pre-incubated in Tris-HCl buffer containing 2–10 mM CuCl2. After one hour of incubation, the bacterial cells were washed and cultured for 1, 12, 24, and 48 h in metal-free media. The copper content in the bacterial cells was determined by atomic absorption spectrometry. The content of lipid peroxidation indicators, carbonyl groups in proteins, total low-molecular-weight thiols, enzymatic activity, and the content of exopolysaccharides and extracellular proteins were determined photometrically. Results. Within an hour, O. rhizosphaerae IMV B-7956 bacteria accumulated 2.3–7.8 mg Cu/g of biomass. Under these conditions, an increased content of lipid peroxidation products was detected. During the first hour of growth in bacterial cells, enzymes with catalase and peroxidase activity were activated. During further cultivation, an increase in the activity of other antioxidant defense enzymes was detected. Carbonyl groups in proteins are probably formed due to an increase in the content of lipid peroxidation products, as they are formed later. Within 12–48 h of growth, the copper content in the bacterial cells decreases. This leads to the restoration of growth. Conclusions. The main damaging effect of CuCl2 on bacterial cells was detected during the first 24 h of growth. Activation of the enzymes of the antioxidant system and synthesis of exopolysaccharides are among the adaptations that ensure the survival of bacteria under these conditions.

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Biostimulants: an eco-friendly regulator of plant stress tolerance and sustainable solution to future agriculture

Dubey,

Misra

2024

Proc.Indian Natl. Sci. Acad.

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Ochrobactrum sp. NBRISH6 Inoculation Enhances Zea mays Productivity, Mitigating Soil Alkalinity and Plant Immune Response

Cited by 4 publications

References 67 publications

Underlying Mechanisms of Action to Improve Plant Growth and Fruit Quality in Crops under Alkaline Stress

Underlying Mechanisms of Action to Improve Plant Growth and Fruit Quality in Crops under Alkaline Stress

Adaptation of Ochrobactrum rhizosphaerae IMV B-7956 Bacteria to the Influence of Copper (II) Chloride

Biostimulants: an eco-friendly regulator of plant stress tolerance and sustainable solution to future agriculture

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