Impact of plant growth-promoting rhizobacteria (PGPR) on plant nutrition and root characteristics: Current perspective

Plant Stress, Год журнала: 2023, Номер 11, С. 100341 - 100341

Опубликована: Дек. 28, 2023

Through a variety of mechanisms, including increasing the amount readily available mineral nutrients, regulating phytohormone levels, and biocontrol phytopathogens, plant growth-promoting rhizobacteria (PGPR) associated with rhizosphere either directly or indirectly stimulates growth development. The establishment, survival, persistence PGPR inoculants are widely acknowledged to be contingent upon these two parameters, in addition intricate network interactions within rhizosphere. In general, soil is moist environment significant amounts carbon that have been degraded harbors large population microbes. rhizo-microbiome crucial agriculture because wide root exudates cell debris attract unique distinct patterns microbial colonization. plays role manufacture regulation extracellular molecules, hormones, secondary metabolites, antibiotics, various signaling chemicals. Additionally, composition influences texture enhancement. Research has shown can used treat plants inoculate promote alters physiology entire plant, which enhances nutrient uptake affects effectiveness activity. specific biochemical processes involved this phenomenon often not well understood. Nevertheless, new studies shed light on mechanisms via by induce responses, both at local systemic levels. Insufficient information regarding impact mechanism molecules metabolic pathways characteristics. Consequently, review will concentrate elucidating identifying essential exert influence root-microbe interactions.

Язык: Английский

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Exploring the Promise of Endophytic Fungi: A Review of Novel Antimicrobial Compounds

Microorganisms, Год журнала: 2022, Номер 10(10), С. 1990 - 1990

Опубликована: Окт. 8, 2022

Over the last few decades, many of existing drugs used to treat infectious diseases have become increasingly ineffective due global emergence antimicrobial resistance (AMR). As such, there is a constant demand find new, effective compounds that could help alleviate some this pressure. Endophytic fungi captured attention researchers in field, as they displayed vast ability produce novel bioactive compounds, which possess wide-ranging activities. However, while highly promising, research area still its infancy. Endophytes inhabit healthy tissues plants asymptomatically, resulting mutualistic symbiosis endophytes plethora support fitness host plant. These display great chemical diversity, representing structural groups, such aliphatic alkaloids, peptides, phenolics, polyketides and terpenoids. In review, significant potential endophytic detailed, highlighting their diverse active against human, plant marine pathogens. doing so, it also highlights contributions can make our battle AMR, thus providing motivation increase efforts search for new drugs.

Язык: Английский

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A potent endophytic fungus Purpureocillium lilacinum YZ1 protects against Fusarium infection in field‐grown wheat

New Phytologist, Год журнала: 2024, Номер 243(5), С. 1899 - 1916

Опубликована: Июнь 30, 2024

Summary Fusarium diseases pose a severe global threat to major cereal crops, particularly wheat. Existing biocontrol strains against are believed primarily rely on antagonistic mechanisms, but not widely used under field conditions. Here, we report an endophytic fungus, Purpureocillium lilacinum YZ1, that shows promise in combating wheat diseases. Under glasshouse conditions, YZ1 inoculation increased the survival rate of graminearum ( Fg )‐infected seedlings from 0% > 60% at seedling stage, and reduced spikelet infections by 70.8% during anthesis. In trials, application resulted impressive 89.0% reduction ‐susceptible spikelets. While slight effect was observed plates, induction systemic resistance which is distantly effective, non‐specific, long‐lasting, appeared be key contributor YZ1's capabilities. Utilizing three imaging methods, confirmed as potent endophyte capable rapid colonization roots, systematically spreading stem leaves. Integrating dual RNA‐Seq, photosynthesis measurements cell wall visualization supported link between growth‐promoting abilities activation resistance. conclusion, endophytes such exhibits non‐antagonistic hold significant potential for industrial‐scale applications.

Язык: Английский

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An exopolysaccharide-producing novel Agrobacterium pusense strain JAS1 isolated from snake plant enhances plant growth and soil water retention

Scientific Reports, Год журнала: 2022, Номер 12(1)

Опубликована: Дек. 9, 2022

A peculiar bacterial growth was very often noticed in leaf-initiated tissue cultures of Sansevieria trifasciata, a succulent belonging to the Asparagaceae family. The isolate left trails some highly viscous material on walls suspension vessels or developed thick overlay semisolid media without adversities plant growth. FTIR identified this substance be an extracellular polysaccharide. Various morphological, biochemical tests, and molecular analyses using 16S rRNA, atpD, recA genes characterized JAS1 as novel strain Agrobacterium pusense. Its mucoidal over Murashige Skoog yielded enormous exopolysaccharide (7252 mg l-1), while nutrient agar it only fast-growing swarms. As qualifying growth-promoting bacteria, produces significant indole-3-acetic acid (86.95 gibberellic (172.98 ammonia (42.66 µmol ml-1). Besides, siderophores, 1-aminocyclopropane-1-carboxylic deaminase, fixes nitrogen, forms biofilms, productively solubilizes soil inorganic phosphates, zinc. Under various treatments with JAS1, wheat chickpea resulted significantly enhanced shoot root parameters. PGP effects positively plants' physiological parameters reflecting increments overall chlorophyll, carotenoids, proline, phenols, flavonoids, sugar contents. In addition, isolated maintained both health under intermittent drying regime, probably by its EPS production attributes, respectively.

Язык: Английский

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Enhanced Physiological and Biochemical Performance of Mung Bean and Maize under Saline and Heavy Metal Stress through Application of Endophytic Fungal Strain SL3 and Exogenous IAA

Cells, Год журнала: 2023, Номер 12(15), С. 1960 - 1960

Опубликована: Июль 28, 2023

Modern irrigation practices and industrial pollution can contribute to the simultaneous occurrence of salinity heavy metal contamination in large areas world, resulting significant negative effects on crop productivity sustainability. This study aimed investigate growth-promoting potentials an important endophytic fungal strain SL3 compare its potential with exogenous IAA (indole-3-acetic acid) context salt stress. The was assessed for plant traits such as production indole-3-acetic acid, gibberellins (GA), siderophore. We selected two crops, mung bean maize, examined various physiological biochemical characteristics under 300 mM NaCl 2.5 Pb stress conditions, without application SL3. study’s results demonstrated that both positively impacted growth development plants normal stressed conditions. In Pb-induced maize significantly reduced. However, helped alleviate stress, leading a increase shoot/root length weight compared non-treated plants. revealed photosynthetic pigments, accumulation catalase (CAT), phenolic contents, polyphenol oxidase, flavanols are higher SL3-treated than non-inoculated findings applying influenced processes tested species conditions Pb. These also suggested could be replacement widely used promote by improving efficiency, reducing oxidative enhancing metabolic activities plants, including maize. Moreover, this highlights has synergistic resilience offers promising avenue future agricultural applications metal-affected regions.

Язык: Английский

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Induction of Systemic Resistance to Tobacco mosaic virus in Tomato through Foliar Application of Bacillus amyloliquefaciens Strain TBorg1 Culture Filtrate

Viruses, Год журнала: 2022, Номер 14(8), С. 1830 - 1830

Опубликована: Авг. 20, 2022

The application of microbe-derived products as natural biocontrol agents to boost systemic disease resistance virus infections in plants is a prospective strategy make agriculture more sustainable and environmentally friendly. In the current study, rhizobacterium Bacillus amyloliquefaciens strain TBorg1 was identified based on 16S rRNA, rpoB, gyrA gene sequences, evaluated for its efficiency conferring protection tomato from infection by Tobacco mosaic (TMV). Under greenhouse circumstances, foliar sprays culture filtrate (TBorg1-CF) promoted growth, lowered severity, significantly decreased TMV accumulation systemically infected leaves treated relative untreated controls. reduced 90% following dual treatment, applied 24 h before after infection. Significant increases levels total soluble carbohydrates, proteins, ascorbic acid were also found. addition, significant rise activities enzymes capable scavenging reactive oxygen species (PPO POX), well non-enzymatic oxidative stress markers (H2O2 MDA) observed, compared plants. Enhanced indicated increased transcript polyphenolic pathway (C4H, HCT, CHI) pathogenesis-related (PR-1 PR-5) genes. Out 15 compounds GC-MS analysis, 1,2-benzenedicarboxylic mono(2-ethylhexyl) ester phenol, 2,4-bis(1,1-dimethylethyl), L-proline, N-valeryl-, heptadecyl present highest concentrations ethyl acetate extract TBorg1-CF. amounts n-hexadecanoic acid, pyrrolo [1,2-a] pyrazine-1,4-dione hexahydro-3-(2-methylpropyl)-, nonane, 5-butyl-, eicosane detected. These may act inducers viral Our findings indicate that newly isolated B. could be potentially useful promoting plant growth possible source combating infections.

Язык: Английский

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Enhancing Agroecosystem Productivity with Endophytic Fungi: Unveiling Their Role

Опубликована: Янв. 1, 2025

Язык: Английский

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Environmental dynamics of pesticides: sources, impacts on amphibians, nanoparticles, and endophytic microorganism remediation

Environmental Science and Pollution Research, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Язык: Английский

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Effect of the Pantoea vagans strain SRS89 on carrot (Daucus carota subsp. sativus L.) seed germination and plant growth under saline conditions

South African Journal of Botany, Год журнала: 2025, Номер 180, С. 415 - 427

Опубликована: Март 22, 2025

Язык: Английский

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Combination of plant extract and fungus: new uses as biocontrol agent of plant pest and disease

IOP Conference Series Earth and Environmental Science, Год журнала: 2025, Номер 1469(1), С. 012022 - 012022

Опубликована: Март 1, 2025

Abstract The purpose of this article is to give a summary combination plant extract and fungus as biocontrol agents. Insects microorganisms are major pest groups that cause significant losses in the agricultural sector. In recent years, diseases have only managed with synthetic pesticides. use pesticides at farm level currently very high, making it dangerous for environment. addition, many species pathogens becoming resistant due development new chemical tolerant strains. Therefore, innovation needed provide an efficient safe alternative control. Many fungi been described agents agriculture because their ability exert multiple effects on pests pathogen. review, we look available research biocontrol. We also discuss several studies combinations extracts able control directly by producing secondary metabolites indirectly resistance plants. Overall, review emphasizes opportunities can be used place controlling support sustainable development.

Язык: Английский

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