A plant’s perception of growth-promoting bacteria and their metabolites

Frontiers in Plant Science, Год журнала: 2024, Номер 14

Опубликована: Янв. 24, 2024

Many recent studies have highlighted the importance of plant growth-promoting (rhizo)bacteria (PGPR) in supporting plant’s development, particularly under biotic and abiotic stress. Most focus on traits selected strains latter’s effect biomass, root architecture, leaf area, specific metabolite accumulation. Regarding energy balance, growth is outcome an input (photosynthesis) several outputs (i.e., respiration, exudation, shedding, herbivory), frequently neglected classical PGPR-plant interaction. Here, we discuss primary evidence underlying modifications triggered by PGPR their metabolites ecophysiology. We propose to detect PGPR-induced variations photosynthetic activity using gas exchange recommend setting up correct timing for monitoring responses according objectives experiment. This research identifies challenges tries provide future directions scientists working interactions exploit potential microorganisms’ application improving value.

Язык: Английский

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Organophosphorus mineralizing-Streptomyces species underpins uranate immobilization and phosphorus availability in uranium tailings

Journal of Hazardous Materials, Год журнала: 2024, Номер 476, С. 134975 - 134975

Опубликована: Июнь 19, 2024

Язык: Английский

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Global distribution pattern of soil phosphorus‐cycling microbes under the influence of human activities

Global Change Biology, Год журнала: 2024, Номер 30(8)

Опубликована: Авг. 1, 2024

Human activities have profoundly altered the Earth's phosphorus (P) cycling process and its associated microbial communities, yet their global distribution pattern response to human influences remain unclear. Here, we estimated abundances of P-cycling genes from 3321 soil metagenomic samples mapped five key processes, that is, organic phosphoester hydrolysis, inorganic solubilization, two-component system, phosphotransferase transporters. Structural equation modeling random forest analysis were employed assess impact anthropogenic environmental factors on abundance genes. Our findings suggest although less significant than climate profile, human-related factors, such as economic population, are important drivers for variations in gene abundance. Notably, increased parallel extent intervention, but generally at low moderate levels activities. Furthermore, identified critical genera, Pseudomonas Lysobacter, which sensitive changes This study provides insights into responses microbes a scale, enhancing our understanding P underscoring importance sustainable biogeochemical cycle.

Язык: Английский

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Effect of Plant Growth-Promoting Rhizobacteria Synthetic Consortium on Growth, Yield, and Metabolic Profile of Lettuce (Lactuca sativa L.) Grown Under Suboptimal Nutrient Regime

Horticulturae, Год журнала: 2025, Номер 11(1), С. 64 - 64

Опубликована: Янв. 9, 2025

Soilless cultivation allows for the exploitation of benefits plant growth-promoting rhizobacteria (PGPR) without loss efficacy observed with soil inoculation. In this study, we investigated effects a PGPR consortium on growth, ecophysiology, and metabolic profile lettuce (Lactuca sativa L.) grown in an aeroponic system under low-nutrient regime. Overall, biomass increased by 25% PGPR-inoculated plants due to enhanced leaf root growth. The rise was primarily increase number average mass, coupled higher total area. addition, inoculated exhibited altered anatomy characterized palisade parenchyma thickness reduced airspace area, suggesting improved photosynthetic efficiency changes mesophyll conductance. morphology also altered, showing lateral development. Furthermore, inoculation induced significant reprogramming leaves, affecting several pathways related development, stress responses. These findings provide valuable insights into intricate dialog between beneficial microbes demonstrate that integration soilless culture analysis ecophysiological, anatomical, metabolomic responses can be powerful approach accelerate design new consortia use as microbial biostimulants.

Язык: Английский

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Diversity and Plant Growth-Promoting Activities of Culturable Seed Endophytes in Abies pindrow (Royle ex D. Don) Royle: Their Role in Seed Germination and Seedling Growth

Current Microbiology, Год журнала: 2025, Номер 82(2)

Опубликована: Янв. 13, 2025

Язык: Английский

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Unraveling the microecological mechanisms of phosphate-solubilizing Pseudomonas asiatica JP233 through metagenomics: insights into the roles of rhizosphere microbiota and predatory bacteria

Frontiers in Microbiology, Год журнала: 2025, Номер 16

Опубликована: Янв. 28, 2025

The effects of phosphate-solubilizing bacteria (PSB) on plant productivity are high variable under field conditions. Soil phosphorus (P) levels proposed to impact PSB performance. Furthermore, the effect exogenous rhizosphere microbial community and their functions largely unexplored. Our study examined how different P background fertilization affected performance Pseudomonas asiatica JP233. We further conducted metagenomic sequencing assess its microbiota functions, with a focus genes related soil cycling. found that JP233 could enhance solubilization tomato growth extent in both low soils, irrespective fertilization. It was particularly effective without extra altered community, boosting taxa known for promotion. also changed gene profiling, enriching pathways secondary metabolite biosynthesis, amino acids, carbon metabolism, other key processes. Particularly, increased abundance most cycle strengthened interconnections. Populations certain predatory after inoculation. findings provide valuable insights into PSB’s mechanisms promotion, as well potential adverse impacts resident microbes bioinoculants.

Язык: Английский

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Controlled-release phosphate fertilizer improves soil fertility and soybean productivity by regulating soil microbial diversity and composition and increasing enzyme activities

Field Crops Research, Год журнала: 2025, Номер 325, С. 109836 - 109836

Опубликована: Март 4, 2025

Язык: Английский

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Review of Phosphite as a Plant Nutrient and Fungicide

Soil Systems, Год журнала: 2021, Номер 5(3), С. 52 - 52

Опубликована: Авг. 30, 2021

Phosphite (Phi)-containing products are marketed for their antifungal and nutritional value. Substantial evidence of the anti-fungal properties Phi on a wide variety plants has been documented. Although is readily absorbed by plant leaves and/or roots, response to used as phosphorus (P) source variable. Negative effects growth commonly observed under P deficiency compared near adequate levels. Positive responses may be attributed some level fungal disease control. While only few studies have provided oxidation through cellular enzymes genetically controlled in cells, increasing exists potential manipulate genes enhance phosphate (Pi) plants. Advances genetic engineering sustain yield with + Pi potentially provides dual fertilization weed control system. Further advances manipulation utilize warranted. Since occurs slowly soils, additional information needed characterize kinetics variable soil environmental conditions.

Язык: Английский

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Co-localised phosphorus mobilization processes in the rhizosphere of field-grown maize jointly contribute to plant nutrition

Soil Biology and Biochemistry, Год журнала: 2021, Номер 165, С. 108497 - 108497

Опубликована: Ноя. 28, 2021

Understanding phosphorus (P) dynamics in the rhizosphere is crucial for sustainable crop production. P mobilization processes include release of plant and microbially-derived protons extracellular phosphatases. We investigated effect root hairs soil texture on spatial distribution intensity mobilizing Zea mays L. root-hair defective mutant (rth3) wild-type (WT) grown two substrates (loam, sand). applied 2D-chemical imaging methods custom-designed windows installed field to visualize pH (optodes), acid phosphatase activity (zymography), labile Mn fluxes (diffusive gradients thin films, DGT). The average extent was greater sand than loam, while presence root-hairs had no impact. Acidification significantly stronger at young tissue (<2 cm from cap) older segments (>4 WT rth3. Accompanied with acidification, higher flux observed mainly around young, actively growing tissues both genotypes. Our results indicate that acidification linked growth created a optimum activity, i.e., mineralization organic P, especially which are major sites uptake. Both genotypes grew better loam sand; however, generally resulted shoot concentrations biomass compared conclude substrate larger impact solubilization maize hairs. For first time, we combined 2D-imaging pH, nutrient demonstrated novel approach stepwise data integration revealing interplay various solubilizing situ.

Язык: Английский

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Bacillus velezensis strain Ag75 as a new multifunctional agent for biocontrol, phosphate solubilization and growth promotion in maize and soybean crops

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

Опубликована: Сен. 10, 2022

Abstract Soybean and maize are some of the main drivers Brazilian agribusiness. However, biotic abiotic factors great concern, causing huge grain yield quality losses. Phosphorus (P) deficiency is important among because most soils have a highly P-fixing nature. Thus, large amounts phosphate fertilizers regularly applied to overcome rapid precipitation P. Searching for alternatives improve use P by crops essential reduce demand input. The multifunctional rhizobacteria can be considered one these alternatives. In this sense, objective present work was select validate bacterial strains with triple action (plant growth promoter, solubilizer, biocontrol agent) in soybean, aiming develop microbial inoculant agriculture. Bacterial high indole acetic acid (IAA) production, solubilization, antifungal activity against soil pathogenic fungi ( Rhizoctonia solani , Macrophomina phaseolina Fusarium ) were selected from rhizosphere. Then, they evaluated as promoters under greenhouse conditions. Based on study, strain 03 (Ag75) due its potential increasing biomass (root shoot) shoot content maize. This identified through genomic sequencing Bacillus velezensis . field experiments, inoculation bacterium increased soybean yields 17.8 26.5%, respectively, compared control (25 kg 2 O 5 ). addition, results did not differ 84 indicating that it possible application crops. Ag75 has developing combines ability solubilize phosphate, promote plant growth, agent several phytopathogenic fungi.

Язык: Английский

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