Rhizosphere Engineering With Plant Growth-Promoting Microorganisms for Agriculture and Ecological Sustainability

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

Опубликована: Фев. 15, 2021

The rhizosphere is undoubtedly the most complex microhabitat, comprised of an integrated network plant roots, soil, and a diverse consortium bacteria, fungi, eukaryotes, archaea. conditions have direct impact on crop growth yield. Nutrient-rich environments stimulate yield vice versa. Extensive cultivation exhaust soils which need to be nurtured before or during next crop. Chemical fertilizers are major source nutrients but their uncontrolled widespread usage has posed serious threat sustainability agriculture stability ecosystem. These chemicals accumulated in drained water, emitted air where they persist for decades causing overall Plant growth-promoting rhizobacteria (PGPR) present convert many plant-unavailable essential e.g., nitrogen, phosphorous, zinc, etc. into available forms. PGPR produces certain hormones (such as auxin, cytokinin, gibberellin), cell lytic enzymes (chitinase, protease, hydrolases, etc.), secondary metabolites, antibiotics, stress alleviating compounds (e.g., 1-Aminocyclopropane-1- carboxylate deaminase), chelating agents (siderophores), some signaling N-Acyl homoserine lactones) interact with beneficial pathogenic counterparts rhizosphere. multifarious activities improve soil structure, health, fertility, functioning directly indirectly support under normal stressed environments. Rhizosphere engineering these wide-ranging application not only fertilization developing eco-friendly sustainable agriculture. Due severe climate change effects plants biology, there growing interest stress-resilient PGPM subsequent induce (drought, salinity, heat) tolerance mechanism plants. This review describes three components explicit focus broader perspective that could facilitate selected hosts serve efficient component

Язык: Английский

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Microbe to Microbiome: A Paradigm Shift in the Application of Microorganisms for Sustainable Agriculture

Frontiers in Microbiology, Год журнала: 2020, Номер 11

Опубликована: Дек. 21, 2020

Light, water and healthy soil are three essential natural resources required for agricultural productivity. Industrialization of agriculture has resulted in intensification cropping practices using enormous amounts chemical pesticides fertilizers that damage these resources. Therefore, there is a need to embrace do not depend on greater use meet the growing demand global food requirements. Plants harbor millions microorganisms, which collectively form microbial community known as microbiome. An effective microbiome can offer benefits its host, including plant growth promotion, nutrient efficiency, control pests phytopathogens. an immediate bring functional potential plant-associated innovation into crop production. In addition that, new scientific methodologies track flux through plant, resident surrounding soil, will opportunities design more efficient consortia design. It now increasingly acknowledged diversity inoculum important promoting ability. Not surprisingly, outcomes from such studies have paradigm shift away single, specific microbes holistic approach enhancing productivity restoration health. Herein, we reviewed this discussed various aspects benign microbiome-based approaches sustainable agriculture.

Язык: Английский

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Plant Growth-Promoting Rhizobacteria as a Green Alternative for Sustainable Agriculture

Sustainability, Год журнала: 2021, Номер 13(19), С. 10986 - 10986

Опубликована: Окт. 3, 2021

Environmental stress is a major challenge for sustainable food production as it reduces yield by generating reactive oxygen species (ROS) which pose threat to cell organelles and biomolecules such proteins, DNA, enzymes, others, leading apoptosis. Plant growth-promoting rhizobacteria (PGPR) offers an eco-friendly green alternative synthetic agrochemicals conventional agricultural practices in accomplishing agriculture boosting growth tolerance plants. PGPR inhabit the rhizosphere of soil exhibit positive interaction with plant roots. These organisms render multifaceted benefits plants several mechanisms release phytohormones, nitrogen fixation, solubilization mineral phosphates, siderophore iron sequestration, protection against various pathogens, stress. has potential curb adverse effects stresses salinity, drought, heavy metals, floods, other on inducing antioxidant enzymes catalase, peroxidase, superoxide dismutase. Genetically engineered strains play significant roles alleviate abiotic improve crop productivity. Thus, present review will focus impact resistance, promotion, induction systems

Язык: Английский

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Drought-tolerant Bacillus megaterium isolated from semi-arid conditions induces systemic tolerance of wheat under drought conditions

Plant Cell Reports, Год журнала: 2021, Номер 41(3), С. 549 - 569

Опубликована: Янв. 7, 2021

Язык: Английский

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Bacterial Root Endophytes: Characterization of Their Competence and Plant Growth Promotion in Soybean (Glycine max (L.) Merr.) under Drought Stress

International Journal of Environmental Research and Public Health, Год журнала: 2021, Номер 18(3), С. 931 - 931

Опубликована: Янв. 21, 2021

Recently, the application of endophytes in alleviation different types stresses has received considerable attention, but their role drought stress and growth promotion soybean is not well-stated. In this study, twenty bacterial were isolated from root tissues screened for plant growth-promoting (PGP) traits, biocontrol potential, alleviation. Out them, 80% showed PGP 20% antagonistic activity against Fusarium oxysporum (ITCC 2389), Macrophomina phaseolina 1800), Alternaria alternata 3467), only three them tolerance up to 15% (-0.3 MPa). Results indicated that drought-tolerant endophytic bacteria enhanced seedling under conditions. Morphological, biochemical, molecular characterization (16S rRNA) revealed these isolates, AKAD A1-1, A1-2, A1-16, closely resemble Bacillus cereus (GenBank accession No. MN079048), Pseudomonas otitidis (MW301101), sp. (MN079074), respectively. We observed seedlings grown well-watered drought-stressed soil adverse effect on morphological (stem length, fresh dry weight) as well biochemical parameters (a decline photosynthetic pigments, membrane damage, etc.). However, inoculated with have improved biomass significantly (p ≤ 0.05) normal conditions over control treatments by influencing several changes. Among endophytes, A1-16 performed better than A1-2 which was further validated ability produce enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase following order: > A1-1. Scanning electron microscopy images also a presence inside roots seedlings. These findings supported potential tool mitigate fungal diseases early soybean.

Язык: Английский

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Rhizospheric microbiome: Bio-based emerging strategies for sustainable agriculture development and future perspectives

Microbiological Research, Год журнала: 2021, Номер 254, С. 126901 - 126901

Опубликована: Окт. 25, 2021

Язык: Английский

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New opportunities in plant microbiome engineering for increasing agricultural sustainability under stressful conditions

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

Опубликована: Сен. 15, 2022

Plant microbiome (or phytomicrobiome) engineering (PME) is an anticipated untapped alternative strategy that could be exploited for plant growth, health and productivity under different environmental conditions. It has been proven the phytomicrobiome crucial contributions to health, pathogen control tolerance drastic (a)biotic constraints. Consistent with safety, in this article we address fundamental role of its insights productivity. We also explore potential restrictions proposition improving microbial functions can supportive better growth production. Understanding associated communities, propose how actions enhanced improve growth-promoting mechanisms, a particular emphasis on beneficial fungi. Additionally, suggest possible strategies adapt harsh environment by manipulating microbiomes. However, our current understanding still infancy, major perturbations, such as anthropocentric actions, are not fully understood. Therefore, work highlights importance create more sustainable agriculture, particularly stressors.

Язык: Английский

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The role of plant-associated rhizobacteria in plant growth, biocontrol and abiotic stress management

Journal of Applied Microbiology, Год журнала: 2022, Номер 133(5), С. 2717 - 2741

Опубликована: Авг. 26, 2022

The rhizosphere is the region around plant roots where maximum microbial activities occur. In rhizosphere, microorganisms' beneficial and harmful affect growth development. mutualistic rhizospheric bacteria which improve health are known as growth-promoting rhizobacteria (PGPR). They very important due to their ability help in diverse ways. PGPR such Pseudomonas, Bacillus, Azospirillum, Azotobacter, Arthrobacter, Achromobacter, Micrococcus, Enterobacter, Rhizobium, Agrobacterium, Pantoea Serratia now well known. Rhizomicrobiome plays critical roles nutrient acquisition assimilation, improved soil texture, secreting modulating extracellular molecules hormones, secondary metabolites, antibiotics various signal compounds, all leading enhancement of microbes compounds they secrete constitute valuable biostimulants play pivotal stress responses. this review, we highlight diversity cutting-edge findings focusing on role a We also discussed resisting adverse effects arising from abiotic (drought, salinity, heat, heavy metals) stresses.

Язык: Английский

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Recruitment of the rhizo-microbiome army: assembly determinants and engineering of the rhizosphere microbiome as a key to unlocking plant potential

Frontiers in Microbiology, Год журнала: 2023, Номер 14

Опубликована: Май 5, 2023

The viable community of microorganisms in the rhizosphere significantly impacts physiological development and vitality plants. assembly functional capacity microbiome are greatly influenced by various factors within rhizosphere. primary host plant genotype, developmental stage status, soil properties, resident microbiota. These drive composition, dynamics, activity microbiome. This review addresses intricate interplay between these how it facilitates recruitment specific microbes to support growth resilience under stress. also explores current methods for engineering manipulating microbiome, including plant-mediated manipulation, soil-related methods, microbe-mediated methods. Advanced techniques harness plant's ability recruit useful promising use rhizo-microbiome transplantation highlighted. goal this is provide valuable insights into knowledge, which will facilitate cutting-edge strategies enhanced stress tolerance. article indicates avenues future research field.

Язык: Английский

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Harnessing root exudates for plant microbiome engineering and stress resistance in plants

Microbiological Research, Год журнала: 2023, Номер 279, С. 127564 - 127564

Опубликована: Дек. 1, 2023

Язык: Английский

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