Use of plant growth promoting rhizobacteria (PGPRs) with multiple plant growth promoting traits in stress agriculture: Action mechanisms and future prospects

Ecotoxicology and Environmental Safety, Год журнала: 2018, Номер 156, С. 225 - 246

Опубликована: Март 20, 2018

Язык: Английский

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Plant Growth-Promoting Bacteria: Biological Tools for the Mitigation of Salinity Stress in Plants

Frontiers in Microbiology, Год журнала: 2020, Номер 11

Опубликована: Июль 7, 2020

Salinity stress is one of the major abiotic stresses threatening sustainable crop production worldwide. The extent salinity affected area expected to cover about 50% total agricultural land by 2050. produces various detrimental effects on plants’ physiological, biochemical, molecular features and reduces productivity. poor plant growth under due reduced nutrient mobilization, hormonal imbalance, formation reactive oxygen species (ROS), ionic toxicity, osmotic stress. Additionally, also modules physicochemical properties microbial diversity soil thus decreases health. On other hand, demand increase in coming decades owing increasing global population. conventional practices improved salt-tolerant varieties would not be sufficient achieving desired yields near future. Plant harbour diverse microbes their rhizosphere, which have potential cope up with These tolerant growth-promoting bacteria (PGPB) assist plants withstand saline conditions. associated produce different compounds such as 1-aminocyclopropane-1-carboxylate (ACC) deaminase, indole-3-acetic acid (IAA), antioxidants, extracellular polymeric substance (EPS), volatile organic (VOC). naturally microbiome has protect host through avoidance, tolerance, resistance strategies. recent developments research shown ways for novel microbe-assisted technologies enhancing salt tolerance gain higher This focused review article presents scenario discussed highlights PGPB a biological tool mitigation plants.

Язык: Английский

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Mining Halophytes for Plant Growth-Promoting Halotolerant Bacteria to Enhance the Salinity Tolerance of Non-halophytic Crops

Frontiers in Microbiology, Год журнала: 2018, Номер 9

Опубликована: Фев. 8, 2018

Salinity stress is one of the major abiotic stresses limiting crop production in arid and semi-arid regions. Interest increasing application PGPRs (plant growth promoting rhizobacteria) to ameliorate such as salinity production. The identification salt-tolerant, or halophilic, has potential promote saline soil-based agriculture. Halophytes are a useful reservoir halotolerant bacteria with plant growth-promoting capabilities. Here, we review recent studies on use halophilic stimulate increase tolerance non-halophytic crops salinity. These illustrate that from rhizosphere halophytic species can be effective bio-inoculants for soils. support viability bioinoculation strategy sustainable enhancement growth. this discussed within context ensuring food world an population continuing climate change. We also explore future research needs using under stress.

Язык: Английский

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Technology readiness and overcoming barriers to sustainably implement nanotechnology-enabled plant agriculture

Nature Food, Год журнала: 2020, Номер 1(7), С. 416 - 425

Опубликована: Июль 16, 2020

Язык: Английский

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Coral microbiome dynamics, functions and design in a changing world

Nature Reviews Microbiology, Год журнала: 2019, Номер 17(9), С. 557 - 567

Опубликована: Июль 1, 2019

Язык: Английский

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Root plasticity under abiotic stress

PLANT PHYSIOLOGY, Год журнала: 2021, Номер 187(3), С. 1057 - 1070

Опубликована: Авг. 30, 2021

Abiotic stresses increasingly threaten existing ecological and agricultural systems across the globe. Plant roots perceive these in soil adapt their architecture accordingly. This review provides insights into recent discoveries showing importance of root system (RSA) plasticity for survival development plants under heat, cold, drought, salt, flooding stress. In addition, we molecular regulation hormonal pathways involved controlling RSA plasticity, main growth, branching lateral hair development, formation adventitious roots. Several affect anatomy by causing aerenchyma formation, lignin suberin deposition, Casparian strip modulation. Roots can also actively grow toward favorable conditions avoid environments detrimental to development. Recent advances understanding cellular mechanisms behind different tropisms are discussed. Understanding will be instrumental crops that resilient face abiotic

Язык: Английский

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Halotolerant plant growth–promoting bacteria: Prospects for alleviating salinity stress in plants

Environmental and Experimental Botany, Год журнала: 2020, Номер 178, С. 104124 - 104124

Опубликована: Май 23, 2020

Язык: Английский

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PGPR in Agriculture: A Sustainable Approach to Increasing Climate Change Resilience

Frontiers in Sustainable Food Systems, Год журнала: 2021, Номер 5

Опубликована: Июль 6, 2021

Growing environmental concerns are potentially narrowing global yield capacity of agricultural systems. Climate change is the most significant problem world currently facing. To meet food demand, production must be doubled by 2050; over exploitation arable lands using unsustainable techniques might resolve demand issues, but they have negative effects. Current crop systems a major reason for changing climate through diminishing biodiversity, physical and chemical soil degradation, water pollution. The application fertilizers pesticides contribute to greenhouse gas emissions (GHG) toxic depositions. At this crucial time, there pressing need transition more sustainable practices, ones that concentrate on promoting mechanisms, which enable crops grow well in resource limited environmentally challenging environments, also develop with greater use efficiency optimum yields across wider array conditions. phytomicrobiome considered as one best strategies; better alternative agriculture, viable solution twin challenges security stability. Use phytomicrobiome, due its friendly mechanisms plant growth promotion, becoming widespread industry. Therefore, review, we emphasize contribution beneficial members, particularly rhizobacteria (PGPR), strategy improvement face change. Also, roles dwelling microbes stress amelioration, nutrient supply (nitrogen fixation, phosphorus solubilization), phytohormone along factors could affect their been discussed extensively. Lastly, limitations expansion biobased techniques, instance, perspective producers, indigenous microbial competition regulatory approval discussed. This review largely focusses importance approaches such biobased/PGPR-based our systems, especially context current conditions, almost certain worsen near future.

Язык: Английский

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Variation in rhizosphere microbial communities and its association with the symbiotic efficiency of rhizobia in soybean

The ISME Journal, Год журнала: 2020, Номер 14(8), С. 1915 - 1928

Опубликована: Апрель 27, 2020

Rhizobia-legume symbiosis is an important type of plant-microbe mutualism; however, the establishment this association complicated and can be affected by many factors. The soybean rhizosphere has a specific microbial community, yet whether these organisms affect rhizobial nodulation not been well investigated. Here, we analyzed compositions relationships rhizocompartment microbiota in three types soil. First, found that community composition varied significantly different soils, network between rhizobia other bacteria was examined. Second, some microbes were correlated with bradyrhizobia sinorhizobia nodules. We cultivated 278 candidate Bacillus isolates from alkaline Finally, interaction assays showed cereus group specifically promotes suppresses growth bradyrhizobia, respectively, alleviates effects saline-alkali conditions on as affecting its colonization Our findings demonstrate crucial role bacterial shaping rhizobia-host interactions soybean, provide framework for improving symbiotic efficiency system mutualism through use synthetic communities.

Язык: Английский

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Halo-tolerant plant growth promoting rhizobacteria for improving productivity and remediation of saline soils

Journal of Advanced Research, Год журнала: 2020, Номер 26, С. 69 - 82

Опубликована: Июль 11, 2020

The collective impact of climate change and soil salinity is continuously increasing the degraded lands across globe, bringing agricultural productivity food security under stress. high concentration salts in saline soils impose osmotic, ionic, oxidative water stress plants. Biological solutions can be most reliable sustainable approach to ensure limit use agro-chemicals.Halo-tolerant plant growth promoting rhizobacteria (HT-PGPR) are emerging as efficient biological tools mitigate toxic effects salt concentrations improve plants, simultaneously remediating soils. review explains role HT-PGPR mitigating plants through diverse mechanisms concurrently leading improvement quality.HT-PGPR involved alleviating a number evoking multipronged physiological, biochemical molecular responses. These include changes expression defense-related proteins, exopolysaccharides synthesis, activation antioxidant machinery, accumulation osmolytes, maintaining Na+ kinetics improving levels phytohormones nutrient uptake modification signaling by inoculation conditions elicits induced systemic resistance which further prepares them against microbial-mechanisms structural compositional improvements also important. Development novel bioinoculants for based on concepts presented affected agro-ecosystems them.

Язык: Английский

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