Plant Growth-Promoting Rhizobacteria: Context, Mechanisms of Action, and Roadmap to Commercialization of Biostimulants for Sustainable Agriculture

Frontiers in Plant Science, Journal Year: 2018, Volume and Issue: 9

Published: Oct. 23, 2018

Microbes of the phytomicrobiome are associated with every plant tissue and, in combination form holobiont. Plants regulate composition and activity their bacterial community carefully. These microbes provide a wide range services benefits to plant; return, provides microbial reduced carbon other metabolites. Soils generally moist environment, rich which supports extensive soil communities. The rhizomicrobiome is great importance agriculture owing diversity root exudates cell debris that attract diverse unique patterns colonization. play key roles nutrient acquisition assimilation, improved texture, secreting modulating extracellular molecules such as hormones, secondary metabolites, antibiotics various signal compounds, all leading enhancement growth. compounds they secrete constitute valuable biostimulants pivotal stress responses. Research has demonstrated inoculating plants plant-growth promoting rhizobacteria (PGPR) or treating microbe-to-plant can be an effective strategy stimulate crop Furthermore, these strategies improve tolerance for abiotic stresses (egs. drought, heat, salinity) likely become more frequent climate change conditions continue develop. This discovery resulted multifunctional PGPR-based formulations commercial agriculture, minimize use synthetic fertilizers agrochemicals. review update about role PGPR from collection commercialization low-cost agricultural inputs. First, we introduce concept context underlying food security 21st century. Next, mechanisms growth promotion by discussed, including exchange between roots how relationships modulate responses via induced systemic resistance. On application side, discussed rhizosphere colonization inoculants. final sections paper describe applications century roadmap technology.

Language: Английский

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Rhizosphere microbiome assemblage is affected by plant development

The ISME Journal, Journal Year: 2013, Volume and Issue: 8(4), P. 790 - 803

Published: Nov. 7, 2013

Language: Английский

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Distinct soil microbial diversity under long-term organic and conventional farming

The ISME Journal, Journal Year: 2014, Volume and Issue: 9(5), P. 1177 - 1194

Published: Oct. 28, 2014

Low-input agricultural systems aim at reducing the use of synthetic fertilizers and pesticides in order to improve sustainable production ecosystem health. Despite integral role soil microbiome production, we still have a limited understanding complex response microbial diversity organic conventional farming. Here report on structural more than two decades different management long-term field experiment using high-throughput pyrosequencing approach bacterial fungal ribosomal markers. Organic farming increased richness, decreased evenness, reduced dispersion shifted structure microbiota when compared with conventionally managed soils under exclusively mineral fertilization. This effect was largely attributed quality fertilizers, as differences became smaller an integrated fertilization scheme were examined. The impact plant protection regime, characterized by moderate targeted application pesticides, subordinate importance. Systems not receiving manure harboured dispersed functionally versatile community presumably oligotrophic organisms adapted nutrient-limited environments. fertilizer specific guilds known be involved degradation compounds such compost. throughput resolution sequencing permitted detect shifts level individual taxa that harbours novel potential for managing environment means promoting beneficial suppressing detrimental organisms.

Language: Английский

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An Underground Revolution: Biodiversity and Soil Ecological Engineering for Agricultural Sustainability

Trends in Ecology & Evolution, Journal Year: 2016, Volume and Issue: 31(6), P. 440 - 452

Published: March 16, 2016

Language: Английский

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Geographic patterns of co-occurrence network topological features for soil microbiota at continental scale in eastern China

The ISME Journal, Journal Year: 2016, Volume and Issue: 10(8), P. 1891 - 1901

Published: Jan. 15, 2016

Soil microbiota play a critical role in soil biogeochemical processes and have profound effect on functions. Recent studies revealed microbial co-occurrence patterns communities, yet the geographic pattern of topological features networks at continental scale are largely unknown. Here, we investigated shifts inferred from along eastern China. Integrating archaeal, bacterial fungal community datasets, meta-community network analyzed node-level network-level associated with five climatic regions. Both wherein microorganisms northern regions had closer relationships but lower interaction influence than those southern We further identified differences taxonomic groups demonstrated that were random for archaea non-random bacteria fungi. Given interactions may contribute to functions more species diversity, this shift provides new insight into studying biogeographic patterns, their organization impacts soil-associated function.

Language: Английский

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The concept and future prospects of soil health

Nature Reviews Earth & Environment, Journal Year: 2020, Volume and Issue: 1(10), P. 544 - 553

Published: Aug. 25, 2020

Language: Английский

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Rhizosphere interactions: root exudates, microbes, and microbial communities

Botany, Journal Year: 2014, Volume and Issue: 92(4), P. 267 - 275

Published: Feb. 26, 2014

The study of the interactions between plants and their microbial communities in rhizosphere is important for developing sustainable management practices agricultural products such as biofertilizers biopesticides. Plant roots release a broad variety chemical compounds to attract select microorganisms rhizosphere. In turn, these plant-associated microorganisms, via different mechanisms, influence plant health growth. this review, we summarize recent progress made unraveling microbes through root exudates, focusing on how exudate mediate rhizospheric both at plant–microbe plant–microbiome levels. We also discuss potential exudates harnessing with that could lead practices.

Language: Английский

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Soil pH Determines Microbial Diversity and Composition in the Park Grass Experiment

Microbial Ecology, Journal Year: 2014, Volume and Issue: 69(2), P. 395 - 406

Published: Nov. 14, 2014

Language: Английский

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Root Exudation of Phytochemicals in Arabidopsis Follows Specific Patterns That Are Developmentally Programmed and Correlate with Soil Microbial Functions

PLoS ONE, Journal Year: 2013, Volume and Issue: 8(2), P. e55731 - e55731

Published: Feb. 1, 2013

Plant roots constantly secrete compounds into the soil to interact with neighboring organisms presumably gain certain functional advantages at different stages of development. Accordingly, it has been hypothesized that phytochemical composition present in root exudates changes over course lifespan a plant. Here, vitro grown Arabidopsis plants were collected developmental and analyzed using GC-MS. Principle component analysis revealed varied each stage. Cumulative secretion levels sugars sugar alcohols higher early time points decreased through In contrast, cumulative amino acids phenolics increased time. The expression genes involved biosynthesis transportation represented consistent patterns exudation. Correlation analyses performed exudation capacity rhizosphere microbiome metabolize these natural soils. Pyrosequencing mRNA strong correlations (p<0.05) between microbial metabolism carbohydrates, secondary metabolites corresponding released by particular plant summary, our results suggest process phytochemicals follows pattern is genetically programmed.

Language: Английский

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Plant root-microbe communication in shaping root microbiomes

Plant Molecular Biology, Journal Year: 2016, Volume and Issue: 90(6), P. 575 - 587

Published: Jan. 4, 2016

A growing body of research is highlighting the impacts root-associated microbial communities can have on plant health and development. These include changes in yield quantity quality, timing key developmental stages tolerance biotic abiotic stresses. With such a range effects it clear that understanding factors contribute to plant-beneficial root microbiome may prove advantageous. Increasing demands for food by human population increases importance urgency how microbiomes be exploited increase crop yields reduce losses caused disease. In addition, climate change require novel approaches overcoming stresses as drought salinity well new emerging diseases. This review discusses current knowledge formation maintenance plant-microbe interactions with particular emphasis effect microbe-microbe shape at surface. Further, we discuss potential modification benefit agriculture production.

Language: Английский

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