Recent Advances in the Molecular Effects of Biostimulants in Plants: An Overview

Biomolecules, Год журнала: 2021, Номер 11(8), С. 1096 - 1096

Опубликована: Июль 25, 2021

As the world develops and population increases, so too does demand for higher agricultural output with lower resources. Plant biostimulants appear to be one of more prominent sustainable solutions, given their natural origin potential substitute conventional methods in agriculture. Classified based on source rather than constitution, such as humic substances (HS), protein hydrolysates (PHs), seaweed extracts (SWE) microorganisms have a proven improving plant growth, increasing crop production quality, well ameliorating stress effects. However, multi-molecular nature varying composition commercially available presents challenges when attempting elucidate underlying mechanisms. While most research has focused broad effects crops, recent studies at molecular level started unravel pathways triggered by certain products cellular gene level. Understanding influences involved could lead further refinement these treatments. This review comprises findings regarding use plants, particular focus reports influence.

Язык: Английский

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Plant growth promoting bacteria for combating salinity stress in plants – Recent developments and prospects: A review

Microbiological Research, Год журнала: 2021, Номер 252, С. 126861 - 126861

Опубликована: Сен. 8, 2021

Язык: Английский

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Management of Phosphorus in Salinity-Stressed Agriculture for Sustainable Crop Production by Salt-Tolerant Phosphate-Solubilizing Bacteria—A Review

Agronomy, Год журнала: 2021, Номер 11(8), С. 1552 - 1552

Опубликована: Авг. 3, 2021

Among the environmental factors, soil salinity is one of most detrimental factors affecting plant growth and productivity. Nutritional-imbalance also known as negative effects on essential nutrients, phosphorus (P) a nutrient in which uptake, transport, distribution adversely affected by salinity-stress. Salinity-stress-mediated low P availability limits crop production. Adding additional fertilizer generally recommended to manage deficit saline-soils; however, low-efficiency available use salt-affected soils, restricts availability, fertilizers are cause significant concerns. The application salinity-tolerant phosphate–solubilizing-bacteria (ST-PSB) can be greatly effective economical way improve recover P-deficit saline-land. This review focuses salinization its effect mechanisms solubilization ST-PSB, ST-PSB diversity, their role alleviating stress plants, current future scenarios use, potential this knowledge sustainable system. According review, adding saline soils could an alternative for plants may ameliorate tolerance.

Язык: Английский

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Plant growth-promoting rhizobacterial biofertilizers for crop production: The past, present, and future

Frontiers in Plant Science, Год журнала: 2022, Номер 13

Опубликована: Сен. 16, 2022

Recent decades have witnessed increased agricultural production to match the global demand for food fueled by population increase. Conventional practices are heavily reliant on artificial fertilizers that numerous human and environmental health effects. Cognizant of this, sustainability researchers environmentalists their focus other crop fertilization mechanisms. Biofertilizers microbial formulations constituted indigenous plant growth-promoting rhizobacteria (PGPR) directly or indirectly promote growth through solubilization soil nutrients, growth-stimulating hormones iron-sequestering metabolites called siderophores. continually been studied, recommended, even successfully adopted many crops in world. These products hold massive potential as sustainable tools, especially wake climate change is partly fertilizers. Despite growing interest technology, its full has not yet achieved utilization still seems be infancy. There a need shed light past, current, future prospects biofertilizers increase understanding utility. This review evaluates history PGPR biofertilizers, assesses present utilization, critically advocates production. It, therefore, updates our evolution Such information can facilitate evaluation ultimately pave way exploitation.

Язык: Английский

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Cross Talk Between Zinc-Solubilizing Bacteria and Plants: A Short Tale of Bacterial-Assisted Zinc Biofortification

Frontiers in Soil Science, Год журнала: 2022, Номер 1

Опубликована: Янв. 7, 2022

A contemporary approach to bacterially mediated zinc (Zn) biofortification offers a new dimension in the crop improvement program with better Zn uptake plants curb malnutrition. The implication of solubilizing bacteria (ZSB) represents an inexpensive and optional strategy for biofortification, ultimate green solution enlivening sustainable agriculture. ZSB dwelling rhizospheric hub or internal plant tissues shows their competence solubilize via variety strategies. admirable method is deposition organic acids (OAs), which acidify surrounding soil environment. secretion siderophores as metal chelating molecule, ligands, manifestation oxidative–reductive system on bacterial cell membrane are further tactics solubilization. inoculation probably more effective tactic enhanced translocation various comestible parts. growth-enhancing properties can be used bioelicitors growth different approaches that crucial health its productivity. This article provides overview functional ZSB-mediated localization edible portions food crops impetus explore such probiotics natural agents.

Язык: Английский

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Contemplating the role of zinc-solubilizing bacteria in crop biofortification: An approach for sustainable bioeconomy

Frontiers in Agronomy, Год журнала: 2022, Номер 4

Опубликована: Июль 29, 2022

Modern agriculture pays attention to improving agricultural production by producing zinc-enriched crops through zinc-solubilizing bacteria strengthen the bioeconomy. Zinc deficiency in soil reduces plant growth and also leads less uptake of zinc edible portion plants. Therefore, content parts plants can be increased biofortification approach. However, most approaches are laborious need expensive input routine practices. microbiological approach may beneficial increasing concentration crop quality with ultimate benefit a greener path. The use microbes thus favorable for elevating enhancing quality, ultimately providing summation role microorganisms strategy. In addition, application as potential biosource represents cost-effective alternate Zinc-solubilizing act natural bio-fortifiers that solubilize unavailable form secreting organic acids, siderophores, other chelating compounds. This review focuses on their contribution enhance yield bioeconomy more sustainable manner.

Язык: Английский

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Dominance of Bacillus species in the wheat (Triticum aestivum L.) rhizosphere and their plant growth promoting potential under salt stress conditions

PeerJ, Год журнала: 2023, Номер 11, С. e14621 - e14621

Опубликована: Янв. 9, 2023

Wheat ( Triticum aestivum L.) is a major source of calorific intake in its various forms and considered one the most important staple foods. Improved wheat productivity can contribute substantially to addressing food security coming decades. Soil salinity serious limiting factor crop production fertilizer use efficiency. In this study, 11 bacteria were isolated from rhizosphere examined for salt tolerance ability. WGT1, WGT2, WGT3, WGT6, WGT8, WGT11 able tolerate NaCl up 4%. Bacterial isolates characterized vitro plant growth-promoting properties including indole-3-acetic acid (IAA) production, phosphate solubilization, nitrogen fixation, zinc biofilm formation, cellulase-pectinase production. Six isolates, WGT4, WGT9 showed IAA ability ranging 0.7–6 µg m/L. WGT8 displayed highest Five WGT5, WGT10, WGT11, demonstrated solubilization 1.4–12.3 WGT2 solubilization. Nitrogen fixation was shown by only two WGT1 WGT8. Zinc on minimal media. All formation ability, where WGT4 exhibited maximum potential. Cellulase noticed while pectinase observed WGT3. Phylogenetic identification potential confirmed their close relationship with species genus Bacillus . WGT3 similarity B. cereus , WGT6 tianshenii subtilis thuringiensis Biofertilizer characteristics salt-tolerant rhizospheric evaluated inoculating plants under controlled conditions field experiments. increase growth parameters enhance grain yield 37% 31%, respectively. Potential study stress, have produce promoting substances stress significantly yield. These bacterial be used as biofertilizers improved sustainable agriculture.

Язык: Английский

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Testing plant growth promoting microorganisms in the field - a proposal for standards

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

Опубликована: Янв. 16, 2024

In the European Union and worldwide there are a burgeoning markets for plant growth promoting microorganisms (PGPM) other biological agents as soil improvers, bio-fertilizers, bio-stimulants, control or bio-pesticides. Microbial have major share in this development. The use of such products is often advertised with promise contributing to sustainable agricultural practices by increasing crop yield offering an alternative substitute decrease dependency agriculture on hazardeous agrochemicals. contrast registered microbial protection products, PGPM that marketed EU improvers biostimulants, not strictly required proven minimum efficacy levels under field conditions. Manufacturers only ensure these do pose unacceptable risks human, animal health, safety environment. Uniform guidelines comparable EPPO - standards (European Mediterranean Plant Protection Organisation) test trials available. This paper attempts fill gap. It proposes trial design implementation, well recommendations type scope data collection evaluation. Selected research papers from literature were evaluated analyze, whether what extent requirements already met. majority had clear experimental followed proper Frequent deficiencies low number tested environments species, insufficient site agronomic management description missing humidity temperature. Using suggested assumed increase expressive power products.

Язык: Английский

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Diazotrophs for Lowering Nitrogen Pollution Crises: Looking Deep Into the Roots

Frontiers in Microbiology, Год журнала: 2021, Номер 12

Опубликована: Май 24, 2021

During and after the green revolution in last century, agrochemicals especially nitrogen (N) were extensively used. However, it resulted a remarkable increase crop yield but drastically reduced soil fertility; increased production cost, food prices, carbon footprints; depleted fossil reserves with huge penalties to environment ecological sustainability. The groundwater, rivers, oceans are loaded N excess which is an environmental catastrophe. Nitrogen emissions (e.g., ammonia, oxide, nitrous oxide) play important role global climate change contribute particulate matter acid rain causing respiratory problems, cancers, damage forests buildings. Therefore, nitrogen-polluted planet Earth needs concerted efforts avoid disaster. Improved agricultural management focuses on synchronization of demand supply along improving N-use efficiency crops. there very little focus natural sources available for plants form diazotrophic bacteria present inside or root surface rhizosphere. These diazotrophs mini-nitrogen factories that convert (78%) atmospheric N2 ammonia through process known as "biological fixation" then taken up by its metabolic functioning. Diazotrophs also stimulate architecture producing plant hormones hence improve plant's overall ability uptake nutrients water. In recent years, nanotechnology has revolutionized whole agri-industry introducing nano-fertilizers coated/slow-releasing fertilizers. With this mind, we tried explore following questions: To what extent can requirements be met diazotroph inoculation? Can input agriculture managed way leading benefits farmers saving money? help technological advancement application? review suggests integrated technology based slow-releasing nano-fertilizer combined should adopted decrease inputs system. This would minimize pollution losses much extent.

Язык: Английский

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Impact of Plant-Beneficial Bacterial Inocula on the Resident Bacteriome: Current Knowledge and Future Perspectives

Microorganisms, Год журнала: 2022, Номер 10(12), С. 2462 - 2462

Опубликована: Дек. 13, 2022

The inoculation of plant growth-promoting bacteria (PGPB) as biofertilizers is one the most efficient and sustainable strategies rhizosphere manipulation leading to increased biomass yield improved health, well ameliorated nutritional value fruits edible seeds. During last decades, exciting, but heterogeneous, results have been obtained growing PGPB inoculated plants under controlled, stressful, open field conditions. On other hand, possible impact deliberate release on resident microbiota has less explored little available information contradictory. This review aims at filling this gap: after a brief description main mechanisms used by PGPB, we focus our attention process selection formulation provide some EU regulation for microbial inocula. Then, concept inocula tool engineering introduced bacterial inoculant native communities discussed, focusing those species that are included in promising not yet regulation.

Язык: Английский

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