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

---

Plant Growth Promoting Rhizobacteria (PGPR) as Green Bioinoculants: Recent Developments, Constraints, and Prospects

Sustainability, Journal Year: 2021, Volume and Issue: 13(3), P. 1140 - 1140

Published: Jan. 22, 2021

The quest for enhancing agricultural yields due to increased pressure on food production has inevitably led the indiscriminate use of chemical fertilizers and other agrochemicals. Biofertilizers are emerging as a suitable alternative counteract adverse environmental impacts exerted by synthetic facilitate overall growth yield crops in an eco-friendly manner. They contain living or dormant microbes, which applied soil used treating crop seeds. One foremost candidates this respect is rhizobacteria. Plant promoting rhizobacteria (PGPR) important cluster beneficial, root-colonizing bacteria thriving plant rhizosphere bulk soil. exhibit synergistic antagonistic interactions with microbiota engage array activities ecological significance. promote facilitating biotic abiotic stress tolerance support nutrition host plants. Due their active endorsing activities, PGPRs considered hazardous fertilizers. biofertilizers biological approach toward sustainable intensification agriculture. However, application increasing several pros cons. Application potential that perform well laboratory greenhouse conditions often fails deliver expected effects development field settings. Here we review different types PGPR-based biofertilizers, discuss challenges faced widespread adoption deliberate prospects using

Language: Английский

---

Beyond Risk: Bacterial Biofilms and Their Regulating Approaches

Frontiers in Microbiology, Journal Year: 2020, Volume and Issue: 11

Published: May 21, 2020

Bacterial biofilms are complex surface attached communities of bacteria held together by a self-produced polymer matrix mainly composed polysaccharides, secreted proteins, and extracellular DNA. biofilm formation is process can be described in five main phases: (i) reversible attachment phase, where nonspecifically attach to surfaces; (ii) irreversible which involves interaction between bacterial cells using adhesins such as fimbriae lipopolysaccharide (LPS); (iii) production polymeric substances (EPS) the resident cells; (iv) maturation synthesize release signaling molecules sense presence each other, conducing microcolony biofilms; (v) dispersal/detachment depart comeback independent planktonic lifestyle. Biofilm detrimental medical, drinking water distribution systems, food marine industries, etc. As result, current studies have been focused towards control prevention biofilms. In an effort get rid harmful biofilms, various techniques approaches employed that interfere with attachment, communication systems (quorum sensing, QS) matrix. Biofilms, however, also offer beneficial roles variety fields including applications plant protection, bioremediation, wastewater treatment corrosion inhibition amongst others. Development promoted through manipulation adhesion surfaces, QS environmental conditions. This review describes events involved formation, lists negative positive aspects associated elaborates strategies currently used regulate establishment well certain encourage highlights future perspectives

Language: Английский

---

Biomass for a sustainable bioeconomy: An overview of world biomass production and utilization

Renewable and Sustainable Energy Reviews, Journal Year: 2021, Volume and Issue: 139, P. 110691 - 110691

Published: Jan. 18, 2021

Language: Английский

---

Nano-based smart pesticide formulations: Emerging opportunities for agriculture

Journal of Controlled Release, Journal Year: 2018, Volume and Issue: 294, P. 131 - 153

Published: Dec. 13, 2018

Language: Английский

---

Drought Stress and Root-Associated Bacterial Communities

Frontiers in Plant Science, Journal Year: 2018, Volume and Issue: 8

Published: Jan. 9, 2018

Root-associated bacterial communities play a vital role in maintaining health of the plant host. These exist complex relationships, where composition and abundance community members is dependent on number factors such as local soil chemistry, genotype phenotype, perturbations surrounding abiotic environment. One common perturbation, drought, has been shown to have drastic effects communities, yet little understood about underlying causes behind observed shifts microbial abundance. As drought may affect root both directly by modulating moisture availability, well indirectly altering chemistry phenotypes, we provide synthesis trends recent studies discuss possible directions for future research that hope will more knowledgeable predictions responses events.

Language: Английский

---

Impact of Agrochemicals on Soil Microbiota and Management: A Review

Land, Journal Year: 2020, Volume and Issue: 9(2), P. 34 - 34

Published: Jan. 23, 2020

The World Health Organization (WHO) states that in developing nations, there are three million cases of agrochemical poisoning. prolonged intensive and indiscriminate use agrochemicals adversely affected the soil biodiversity, agricultural sustainability, food safety, bringing long-term harmful effects on nutritional security, human animal health. Most negatively affect microbial functions biochemical processes. alteration diversity composition beneficial community can be unfavorable to plant growth development either by reducing nutrient availability or increasing disease incidence. Currently, is a need for qualitative, innovative, demand-driven research science, especially countries facilitating high-quality eco-friendly creating conducive trustworthy work atmosphere, thereby rewarding productivity merits. Hence, we reviewed (1) impact various environment; (2) importance smallholder farmers sustainable crop protection enhancement solutions, (3) management strategies serve scientific community, policymakers, land managers integrating sustainability practices farming households. current review provides an improved understanding security.

Language: Английский

---

Soil Microbial Resources for Improving Fertilizers Efficiency in an Integrated Plant Nutrient Management System

Frontiers in Microbiology, Journal Year: 2018, Volume and Issue: 9

Published: July 31, 2018

Tomorrow's agriculture, challenged by increasing global demand for food, scarcity of arable lands, and resources alongside multiple environment pressures, needs to be managed smartly through sustainable eco-efficient approaches. Modern agriculture has more productive, environmentally friendly. While macronutrients such as nitrogen (N), phosphorus (P), potassium (K) sulfur (S) supplied mineral fertilizers are vital crop production, agriculturally beneficial microorganisms may also contribute directly (i.e. biological N2 fixation, P solubilization, phytohormone etc.) or indirectly antimicrobial compounds biosynthesis, elicitation induced systemic resistance, improvement efficiency. Microbial-based bioformulations that increase plant performance greatly needed, in particular exhibit complementary synergistic effects with fertilization. Such an integrated soil fertility management strategy been demonstrated several controlled non-controlled experiments, but efforts have made order thoroughly understand the functions microbes' within microbial community itself interaction plants resources. In fact, combined usage microorganisms: N2-fixing (NF), P-solubilizing mobilizing, is emerging research area aims design develop efficient formulations which highly compatible inputs, positive impacts on both crops environment. This novel approach likely a interest, especially most N- P-deficient agro-ecosystems. this review, we report importance NF bacteria solubilizing/mobilizing microbes well their interactions fertilization improving productivity addition, shed light interactive occur multi-trophic involving those two groups consequences uptake, resiliency environmental constraints. Improving use nutrients must securing higher yield manner, therefore continuously designing, developing testing innovative nutrient systems based relevant (crops microorganisms) required.

Language: Английский

---

Beneficial features of plant growth-promoting rhizobacteria for improving plant growth and health in challenging conditions: A methodical review

The Science of The Total Environment, Journal Year: 2020, Volume and Issue: 743, P. 140682 - 140682

Published: July 7, 2020

Language: Английский

---

Biofertilizers: An ecofriendly technology for nutrient recycling and environmental sustainability

Current Research in Microbial Sciences, Journal Year: 2021, Volume and Issue: 3, P. 100094 - 100094

Published: Dec. 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.

Language: Английский

---