Microorganisms in Plant Growth and Development: Roles in Abiotic Stress Tolerance and Secondary Metabolites Secretion

Microorganisms, Год журнала: 2022, Номер 10(8), С. 1528 - 1528

Опубликована: Июль 28, 2022

Crops aimed at feeding an exponentially growing population are often exposed to a variety of harsh environmental factors. Although plants have evolved ways adjusting their metabolism and some also been engineered tolerate stressful environments, there is still shortage food supply. An alternative approach explore the possibility using rhizosphere microorganisms in mitigation abiotic stress hopefully improve production. Several studies shown that rhizobacteria mycorrhizae organisms can help tolerance by enhancing plant growth; stimulating production phytohormones, siderophores, solubilizing phosphates; lowering ethylene levels; upregulating expression dehydration response antioxidant genes. This article shows secretion secondary metabolites as additional mechanism employed against stress. The understanding these mechanisms will efficacy plant-growth-promoting microorganisms.

Язык: Английский

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Fungi That Promote Plant Growth in the Rhizosphere Boost Crop Growth

Journal of Fungi, Год журнала: 2023, Номер 9(2), С. 239 - 239

Опубликована: Фев. 10, 2023

The fungi species dwelling in the rhizosphere of crop plants, revealing functions that endeavor sustainability are commonly referred to as ‘plant-growth-promoting fungi’ (PGPF). They biotic inducers provide benefits and carry out important agricultural sustainability. problem encountered system nowadays is how meet population demand based on yield protection without putting environment human animal health at risk production. PGPF including Trichoderma spp., Gliocladium virens, Penicillium digitatum, Aspergillus flavus, Actinomucor elegans, Podospora bulbillosa, Arbuscular mycorrhizal fungi, etc., have proven their ecofriendly nature ameliorate production crops by improving growth shoots roots germination seeds, chlorophyll for photosynthesis, abundant crops. PGPF’s potential mode action follows: mineralization major minor elements required support plants’ productivity. In addition, produce phytohormones, induced resistance, defense-related enzymes inhibit or eradicate invasion pathogenic microbes, other words, help plants while encountering stress. This review portrays an effective bioagent facilitate promote production, plant growth, resistance disease invasion, various abiotic stresses.

Язык: Английский

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Drought-induced recruitment of specific root-associated bacteria enhances adaptation of alfalfa to drought stress

Frontiers in Microbiology, Год журнала: 2023, Номер 14

Опубликована: Фев. 23, 2023

Drought is a major abiotic stress that threatens crop production. Soil microbiomes are thought to play role in enhancing plant adaptation various stresses. However, it remains unclear whether soil key when plants challenged by drought and different varieties enriched with specific bacteria at the rhizosphere. In this study, we measured changes growth phenotypes, physiological biochemical characteristics of drought-tolerant alfalfa (AH) drought-sensitive (QS) under sterilized unsterilized conditions adequate watering stress, analyzed rhizosphere bacterial community composition using 16S rRNA high-throughput sequencing. We observed treatment significantly improved growth, seedlings compared treatment. Under fresh dry weight increased 35.24, 29.04, 11.64%, 2.74% for AH QS, respectively, treatments. The improvement was greater than QS. QS recruited drought. Interestingly, well-watered conditions, already rich communities, mainly Proteobacteria Bacteroidetes, whereas these started increase only subjected When applied, more bacteria, Acidobacteria, while enrichment weaker Therefore, tolerance variety Overall, study confirmed drought-induced improving clarified process related (genotype). results provide basis regulating microbiome.

Язык: Английский

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Microbiome-Mediated Strategies to Manage Major Soil-Borne Diseases of Tomato

Plants, Год журнала: 2024, Номер 13(3), С. 364 - 364

Опубликована: Янв. 25, 2024

The tomato (Solanum lycopersicum L.) is consumed globally as a fresh vegetable due to its high nutritional value and antioxidant properties. However, soil-borne diseases can severely limit production. These diseases, such bacterial wilt (BW), Fusarium (FW), Verticillium (VW), root-knot nematodes (RKN), significantly reduce the yield quality of tomatoes. Using agrochemicals combat these lead chemical residues, pesticide resistance, environmental pollution. Unfortunately, resistant varieties are not yet available. Therefore, we must find alternative strategies protect tomatoes from diseases. One most promising solutions harnessing microbial communities that suppress disease promote plant growth immunity. Recent omics technologies next-generation sequencing advances help us develop microbiome-based mitigate This review emphasizes importance interdisciplinary approaches understanding utilization beneficial microbiomes improve crop productivity.

Язык: Английский

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Biostimulants Enhance the Nutritional Quality of Soilless Greenhouse Tomatoes

Plants, Год журнала: 2024, Номер 13(18), С. 2587 - 2587

Опубликована: Сен. 15, 2024

The application of biostimulants in vegetable cultivation has emerged as a promising approach to enhance the nutritional quality crops, particularly controlled environment agriculture and soilless culture systems. In this study, we employed rigorous methodology, applying various amino acids, Plant Growth-Promoting Rhizobacteria (PGPR), fulvic acid, chitosan, vermicompost along with mineral fertilizers, both foliar via roots, greenhouse tomatoes during spring cultivation. experiment, conducted coir pith medium using ‘Samyeli F1’ tomato cultivar, demonstrated that plants treated performed better than control plants. Notable variations components were observed across treatments. PGPR had best effects on physical properties fruit, showing highest fruit weight, length, equatorial diameter, volume, skin elasticity, flesh hardness while maintaining high color parameters L, a, b. acid significant enhancements total phenolics flavonoids, suggesting potential boosts antioxidant properties. Amioacid notably elevated soluble solids, indicating sweetness overall taste improvements. On other hand, stood out for its ability elevate flavonoids enhancing vitamin C content, comprehensive enhancement quality. addition, most impact plant growth yield, achieving 43% increase over yield 10.39 kg/m2. These findings underline specific benefits different biostimulants, offering valuable insights optimizing practices produce enhanced health-promoting

Язык: Английский

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Management of Rhizosphere Microbiota and Plant Production under Drought Stress: A Comprehensive Review

Plants, Год журнала: 2022, Номер 11(18), С. 2437 - 2437

Опубликована: Сен. 19, 2022

Drought generates a complex scenario worldwide in which agriculture should urgently be reframed from an integrative point of view. It includes the search for new water resources and use tolerant crops genotypes, improved irrigation systems, other less explored alternatives that are very important, such as biotechnological tools may increase efficiency. Currently, large body evidence highlights role specific strains main microbial rhizosphere groups (arbuscular mycorrhizal fungi, yeasts, bacteria) on increasing drought tolerance their host plants through diverse plant growth-promoting (PGP) characteristics. With this background, it is possible to suggest joint distinct PGP microbes could produce positive interactions or additive beneficial effects if co-inoculation does not generate antagonistic responses. To date, have only been partially analyzed by using single omics tools, genomics, metabolomics, proteomics. However, there gap information multi-omics approaches detect between plants. This approach must next scale-jump study interaction soil–plant–microorganism. In review, we constraints posed framework global demand production, integrating important played biota agent. Using understand depth processes occur presence microorganisms can allow us modulate combined drive crop yields, improving production attend growing food.

Язык: Английский

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The potential for plant growth-promoting bacteria to impact crop productivity in future agricultural systems is linked to understanding the principles of microbial ecology

Frontiers in Microbiology, Год журнала: 2023, Номер 14

Опубликована: Май 19, 2023

Global climate change poses challenges to land use worldwide, and we need reconsider agricultural practices. While it is generally accepted that biodiversity can be used as a biomarker for healthy agroecosystems, must specify what specifically composes microbiome. Therefore, understanding how holobionts function in native, harsh, wild habitats rhizobacteria mediate plant ecosystem the systems enables us identify key factors fitness. A approach engineering microbial communities by connecting host phenotype adaptive traits would help understand increased fitness of supported genetic diversity. Identification loci controlling interaction beneficial microbiomes will allow integration genomic design into crop breeding programs. Bacteria plants have traditionally been conceived “promoting regulating growth”. The future perspective agroecosystems should microbiomes, via multiple cascades, define phenotypes provide variability agroecosystems.

Язык: Английский

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Drought stress amelioration in tomato (Solanum lycopersicum L.) seedlings by biostimulant as regenerative agent

Frontiers in Plant Science, Год журнала: 2023, Номер 14

Опубликована: Авг. 15, 2023

Drought adversely affects many physiological and biochemical events of crops. This research was conducted to investigate the possible effects biostimulants containing plant growth-promoting rhizobacteria (PGPR) on growth parameters, chlorophyll content, membrane permeability (MP), leaf relative water content (LRWC), hydrogen peroxide (H2O2), proline, malondialdehyde (MDA), hormone antioxidant enzymes (catalase (CAT), peroxidase (POD), superoxide dismutase (SOD)) activity tomato (Solanum lycopersicum L.) seedlings under different irrigation levels. study carried out controlled greenhouse conditions with two levels (D0: 100% field capacity D1: 50% capacity) three biostimulant doses (B0: 0, B1: 4 L ha-1, B2: 6 ha-1). The results show that drought stress negatively influenced characteristics while applications ameliorated these parameters. Water deficit (50% caused decrease in indole acetic acid (IAA), gibberellic (GA), salicylic (SA), cytokine, zeatin, jasmonic by ratios 83%, 93%, 82%, 89%, 50%, 57%, respectively, shoot fresh weight, root dry height, stem diameter, area decreased 43%, 19%, 39%, 29%, 20%, 18%, compared control (B0D0). In addition, 21%, 16%, 17% reductions occurred LRWC, a, b, total contents control, respectively. Biostimulant restored growth, most effective dose ha-1 condition. Amendment into soil also enhanced organic matter N, P, Ca, Cu experiment soil. conclusion, amendment might be a promising approach mitigate adverse tomato.

Язык: Английский

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Characterization of rhizospheric fungi and their in vitro antagonistic potential against myco-phytopathogens invading Macrotyloma uniflorum plants

International Microbiology, Год журнала: 2024, Номер unknown

Опубликована: Апрель 15, 2024

Язык: Английский

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Plant growth promoting bacteria (PGPB)-induced plant adaptations to stresses: an updated review

PeerJ, Год журнала: 2024, Номер 12, С. e17882 - e17882

Опубликована: Авг. 20, 2024

Plants and bacteria are co-evolving interact with one another in a continuous process. This interaction enables the plant to assimilate nutrients acquire protection help of beneficial known as growth-promoting (PGPB). These naturally produce bioactive compounds that can assist plants’ stress tolerance. Moreover, they employ various direct indirect processes induce growth protect plants against pathogens. The mechanisms involve phytohormone production, phosphate solubilization, zinc potassium ammonia nitrogen fixation while, production siderophores, lytic enzymes, hydrogen cyanide, antibiotics included under mechanisms. property be exploited prepare bioformulants for biofertilizers, biopesticides, biofungicides, which convenient alternatives chemical-based products achieve sustainable agricultural practices. However, application importance PGPB agriculture still debatable despite its immense diversity growth-supporting activities. performance varies greatly is dictated by environmental factors affecting development. review emphasizes role activities (stress tolerance, phytohormones) summarises new formulations opportunities.

Язык: Английский

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