Polysaccharide Utilization Loci: Fueling Microbial Communities

Journal of Bacteriology, Год журнала: 2017, Номер 199(15)

Опубликована: Янв. 31, 2017

ABSTRACT The complex carbohydrates of terrestrial and marine biomass represent a rich nutrient source for free-living mutualistic microbes alike. enzymatic saccharification these diverse substrates is critical importance fueling variety microbial communities, including marine, soil, ruminant, monogastric microbiota. Consequently, highly specific carbohydrate-active enzymes, recognition proteins, transporters are enriched in the genomes certain species competitive environments. In Bacteroidetes bacteria, systems organized as polysaccharide utilization loci (PULs), which strictly regulated, colocalized gene clusters that encode enzyme protein ensembles required carbohydrates. This review provides historical perspectives summarizes key findings study systems, highlighting shift from sequence-based PUL discovery to systems-based analyses combining reverse genetics, biochemistry, enzymology, structural biology precisely illuminate molecular mechanisms underpinning function. ecological implications dynamic deployment by human gastrointestinal tract explored, well wider distribution other gut, terrestrial,

Язык: Английский

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Biofertilizers: An ecofriendly technology for nutrient recycling and environmental sustainability

Current Research in Microbial Sciences, Год журнала: 2021, Номер 3, С. 100094 - 100094

Опубликована: Дек. 20, 2021

Modern intensive agricultural practices face numerous challenges that pose major threats to global food security. In order address the nutritional requirements of ever-increasing world population, chemical fertilizers and pesticides are applied on large scale increase crop production. However, injudicious use agrochemicals has resulted in environmental pollution leading public health hazards. Moreover, agriculture soils continuously losing their quality physical properties as well (imbalance nutrients) biological health. Plant-associated microbes with plant growth- promoting traits have enormous potential solve these play a crucial role enhancing biomass yield. The beneficial mechanisms growth improvement include enhanced nutrient availability, phytohormone modulation, biocontrol phytopathogens amelioration biotic abiotic stresses. Solid-based or liquid bioinoculant formulation comprises inoculum preparation, addition cell protectants such glycerol, lactose, starch, good carrier material, proper packaging best delivery methods. Recent developments entrapment/microencapsulation, nano-immobilization microbial bioinoculants biofilm-based biofertilizers. This review critically examines current state-of-art strains biofertilizers important roles performed by maintaining soil fertility productivity.

Язык: Английский

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Microbially Mediated Plant Salt Tolerance and Microbiome-based Solutions for Saline Agriculture

Biotechnology Advances, Год журнала: 2016, Номер 34(7), С. 1245 - 1259

Опубликована: Сен. 9, 2016

Язык: Английский

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Plant Microbiome Engineering: Expected Benefits for Improved Crop Growth and Resilience

Trends in biotechnology, Год журнала: 2020, Номер 38(12), С. 1385 - 1396

Опубликована: Май 22, 2020

Язык: Английский

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Microbiome engineering to improve biocontrol and plant growth-promoting mechanisms

Microbiological Research, Год журнала: 2018, Номер 208, С. 25 - 31

Опубликована: Янв. 31, 2018

Язык: Английский

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Soil immune responses

Science, Год журнала: 2016, Номер 352(6292), С. 1392 - 1393

Опубликована: Июнь 16, 2016

Soil microbiomes may be harnessed for plant health

Язык: Английский

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Microbial interactions: ecology in a molecular perspective

Brazilian Journal of Microbiology, Год журнала: 2016, Номер 47, С. 86 - 98

Опубликована: Окт. 26, 2016

The microorganism–microorganism or microorganism–host interactions are the key strategy to colonize and establish in a variety of different environments. These involve all ecological aspects, including physiochemical changes, metabolite exchange, conversion, signaling, chemotaxis genetic exchange resulting genotype selection. In addition, establishment environment depends on species diversity, since high functional redundancy microbial community increases competitive ability community, decreasing possibility an invader this environment. Therefore, these associations result co-evolution process that leads adaptation specialization, allowing occupation niches, by reducing biotic abiotic stress exchanging growth factors signaling. Microbial occur transference molecular information, many mechanisms can be involved such as secondary metabolites, siderophores, quorum sensing system, biofilm formation, cellular transduction among others. ultimate unit interaction is gene expression each organism response environmental (biotic abiotic) stimulus, which responsible for production molecules interactions. present review, we focused some interaction, not only microbial–host has been exploited other reviews, but also used microorganisms modulate structuration community.

Язык: Английский

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Phytoremediation: a sustainable environmental technology for heavy metals decontamination

SN Applied Sciences, Год журнала: 2021, Номер 3(3)

Опубликована: Фев. 6, 2021

Abstract Toxic metal contamination of soil is a major environmental hazard. Chemical methods for heavy metal's (HMs) decontamination such as heat treatment, electroremediation, replacement, precipitation and chemical leaching are generally very costly not be applicable to agricultural lands. However, many strategies being used restore polluted environments. Among these, phytoremediation promising method based on the use hyper-accumulator plant species that can tolerate high amounts toxic HMs present in environment/soil. Such strategy uses green plants remove, degrade, or detoxify metals. Five types technologies have often been employed decontamination: phytostabilization, phytodegradation, rhizofiltration , phytoextraction phytovolatilization . Traditional presents some limitations regarding their applications at large scale, so application genetic engineering approaches transgenic transformation, nanoparticles addition assisted with phytohormones, growth-promoting bacteria AMF inoculation has applied ameliorate efficacy candidates decontamination. In this review, aspects toxicity depollution procedures focus discussed. Last, recent innovative improving highlighted.

Язык: Английский

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Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

Microbiome, Год журнала: 2020, Номер 8(1)

Опубликована: Сен. 22, 2020

Abstract Background Plant diseases caused by fungal pathogen result in a substantial economic impact on the global food and fruit industry. Application of organic fertilizers supplemented with biocontrol microorganisms ( i.e. bioorganic fertilizers) has been shown to improve resistance against plant pathogens at least part due impacts structure function resident soil microbiome. However, it remains unclear whether such improvements are driven specific action microbial inoculants, populations naturally fertilizer or physical-chemical properties compost substrate. The aim this study was seek ecological mechanisms involved disease suppressive activity bio-organic fertilizers. Results To disentangle mechanism action, we conducted an experiment tracking Fusarium wilt banana changes communities over three growth seasons response following four treatments: (containing Bacillus amyloliquefaciens W19), fertilizer, sterilized B . W19. We found that which re-inoculated provided similar degree suppression as non-sterilized across cropping seasons. further observed these treatments is linked communities, specifically leading increases Pseudomonas spp.. Observed correlations between amendment indigenous spp. might underlie were studied laboratory pot experiments. These studies revealed bacterial taxa synergistically increase biofilm formation likely acted plant-beneficial consortium pathogen. Conclusion Together demonstrate product inoculum within its This knowledge should help design more efficient biofertilizers designed promote function.

Язык: Английский

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The Relationship Between the Human Genome and Microbiome Comes into View

Annual Review of Genetics, Год журнала: 2017, Номер 51(1), С. 413 - 433

Опубликована: Сен. 21, 2017

The body's microbiome, composed of microbial cells that number in the trillions, is involved human health and disease ways are just starting to emerge. microbiome assembled at birth, develops with its host, greatly influenced by environmental factors such as diet other exposures. Recently, a role for genetic variation has emerged also influential accounting interpersonal differences microbiomes. Thus, genes may influence directly or promoting beneficial microbiome. Studies heritability gut microbiotas reveal subset microbes whose abundances partly genetically determined host. However, use genome-wide association studies (GWASs) identify variants associated phenotypes proven challenging. date small GWAS standards, cross-study comparisons hampered analytical approaches. Nevertheless, associations between have consistent populations. Most notably, higher levels bacteria called Bifidobacteria lactase nonpersister genotype, which typically confers lactose intolerance, several different It time be incorporated into quantify interactions among environment, order predict susceptibility.

Язык: Английский

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