Halotolerant Rhizobacteria for Salinity-Stress Mitigation: Diversity, Mechanisms and Molecular Approaches

Sustainability, Journal Year: 2022, Volume and Issue: 14(1), P. 490 - 490

Published: Jan. 3, 2022

Agriculture is the best foundation for human livelihoods, and, in this respect, crop production has been forced to adopt sustainable farming practices. However, soil salinity severely affects growth, degradation of quality, and fertility many countries world. This results loss profitability, growth agricultural yields, step-by-step decline nutrient content. Thus, researchers have focused on searching halotolerant plant growth-promoting bacteria (PGPB) increase productivity. The beneficial are frequently connected with rhizosphere can alleviate under stress through direct or indirect mechanisms. In context, PGPB attained a unique position. responses include an increased rate photosynthesis, high antioxidants, osmolyte accumulation, decreased Na+ ions, maintenance water balance, germination rate, well-developed root shoot elongation salt-stress conditions. Therefore, use as bioformulations emerging research avenue last few years, applications biopesticides biofertilizers being considered alternative tools agriculture, they ecofriendly minimize all kinds stresses. Halotolerant possess greater potential salinity-affected bioinoculants bioremediation salt-affected soil.

Language: Английский

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Plant growth-promoting rhizobacteria: Salt stress alleviators to improve crop productivity for sustainable agriculture development

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 13

Published: Jan. 12, 2023

Soil salinity, a growing issue worldwide, is detrimental consequence of the ever-changing climate, which has highlighted and worsened conditions associated with damaged soil quality, reduced agricultural production, decreasing land areas, thus resulting in an unsteady national economy. In this review, halo-tolerant plant growth-promoting rhizo-microbiomes (PGPRs) are evaluated salinity-affected agriculture as they serve excellent agents controlling various biotic–abiotic stresses help augmentation crop productivity. Integrated efforts these effective microbes lighten load agro-chemicals on environment while managing nutrient availability. PGPR-assisted modern practices have emerged green strategy to benefit sustainable farming without compromising yield under salinity well supplementary including increased temperature, drought, potential invasive pathogenicity. PGPRs bio-inoculants impart induced systemic tolerance (IST) plants by production volatile organic compounds (VOCs), antioxidants, osmolytes, extracellular polymeric substances (EPS), phytohormones, ACC-deaminase recuperation nutritional status ionic homeostasis. Regulation PGPR-induced signaling pathways such MAPK CDPK assists stress alleviation. The “Next Gen Agriculture” consists application designer microbiomes through gene editing tools, for instance, CRISPR, engineering metabolic so gain maximum resistance. utilization omics technologies over traditional approaches can fulfill criteria required increase yields manner feeding burgeoning population augment adaptability climate change conditions, ultimately leading improved vitality. Furthermore, constraints specificity PGPR, lack acceptance farmers, legal regulatory aspects been acknowledged also discussing future trends product commercialization view changing climate.

Language: Английский

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Impact of plant growth-promoting rhizobacteria (PGPR) on plant nutrition and root characteristics: Current perspective

Plant Stress, Journal Year: 2023, Volume and Issue: 11, P. 100341 - 100341

Published: Dec. 28, 2023

Through a variety of mechanisms, including increasing the amount readily available mineral nutrients, regulating phytohormone levels, and biocontrol phytopathogens, plant growth-promoting rhizobacteria (PGPR) associated with rhizosphere either directly or indirectly stimulates growth development. The establishment, survival, persistence PGPR inoculants are widely acknowledged to be contingent upon these two parameters, in addition intricate network interactions within rhizosphere. In general, soil is moist environment significant amounts carbon that have been degraded harbors large population microbes. rhizo-microbiome crucial agriculture because wide root exudates cell debris attract unique distinct patterns microbial colonization. plays role manufacture regulation extracellular molecules, hormones, secondary metabolites, antibiotics, various signaling chemicals. Additionally, composition influences texture enhancement. Research has shown can used treat plants inoculate promote alters physiology entire plant, which enhances nutrient uptake affects effectiveness activity. specific biochemical processes involved this phenomenon often not well understood. Nevertheless, new studies shed light on mechanisms via by induce responses, both at local systemic levels. Insufficient information regarding impact mechanism molecules metabolic pathways characteristics. Consequently, review will concentrate elucidating identifying essential exert influence root-microbe interactions.

Language: Английский

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Strategies to Enhance the Use of Endophytes as Bioinoculants in Agriculture

Horticulturae, Journal Year: 2022, Volume and Issue: 8(6), P. 498 - 498

Published: June 3, 2022

The findings on the strategies employed by endophytic microbes have provided salient information to researchers need maximally explore them as bio-input in agricultural biotechnology. Biotic and abiotic factors are known influence microbial recruitments from external plant environments into tissues. Endophytic exhibit mutualism or antagonism association with host plants. beneficial types contribute growth soil health, directly indirectly. Strategies enhance use of desirable modern agriculture, such that these can be applied individually combined bioinoculants bioprospecting crop breeding systems. Scant is available for shaping microbiome; hence, unravel yield enhancement pathogen suppressiveness become imperative. Therefore, this review focuses microbiome, mechanisms, influencing endophyte recruitment, possible exploration bioinoculants.

Language: Английский

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Streptomyces can be an excellent plant growth manager

World Journal of Microbiology and Biotechnology, Journal Year: 2022, Volume and Issue: 38(11)

Published: Aug. 18, 2022

Language: Английский

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Enhancing plant growth promoting rhizobacterial activities through consortium exposure: A review

Frontiers in Bioengineering and Biotechnology, Journal Year: 2023, Volume and Issue: 11

Published: Feb. 10, 2023

Plant Growth Promoting Rhizobacteria (PGPR) has gained immense importance in the last decade due to its in-depth study and role of rhizosphere as an ecological unit biosphere. A putative PGPR is considered only when it may have a positive impact on plant after inoculation. From various pieces literature, been found that these bacteria improve growth plants their products through growth-promoting activities. microbial consortium effect (PGP) activities evident by literature. In natural ecosystem, rhizobacteria interact synergistically antagonistically with each other form consortium, but there are oscillating environmental conditions affect potential mechanism consortium. For sustainable development our environment, utmost necessity maintain stability rhizobacterial fluctuating conditions. decade, studies conducted design synthetic helps integrate cross-feeding over strains reveal social interactions. this review, authors emphasized covering all designing consortiums, strategies, mechanism, application field ecology biotechnology.

Language: Английский

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Dominance of Bacillus species in the wheat (Triticum aestivum L.) rhizosphere and their plant growth promoting potential under salt stress conditions

PeerJ, Journal Year: 2023, Volume and Issue: 11, P. e14621 - e14621

Published: Jan. 9, 2023

Wheat ( Triticum aestivum L.) is a major source of calorific intake in its various forms and considered one the most important staple foods. Improved wheat productivity can contribute substantially to addressing food security coming decades. Soil salinity serious limiting factor crop production fertilizer use efficiency. In this study, 11 bacteria were isolated from rhizosphere examined for salt tolerance ability. WGT1, WGT2, WGT3, WGT6, WGT8, WGT11 able tolerate NaCl up 4%. Bacterial isolates characterized vitro plant growth-promoting properties including indole-3-acetic acid (IAA) production, phosphate solubilization, nitrogen fixation, zinc biofilm formation, cellulase-pectinase production. Six isolates, WGT4, WGT9 showed IAA ability ranging 0.7–6 µg m/L. WGT8 displayed highest Five WGT5, WGT10, WGT11, demonstrated solubilization 1.4–12.3 WGT2 solubilization. Nitrogen fixation was shown by only two WGT1 WGT8. Zinc on minimal media. All formation ability, where WGT4 exhibited maximum potential. Cellulase noticed while pectinase observed WGT3. Phylogenetic identification potential confirmed their close relationship with species genus Bacillus . WGT3 similarity B. cereus , WGT6 tianshenii subtilis thuringiensis Biofertilizer characteristics salt-tolerant rhizospheric evaluated inoculating plants under controlled conditions field experiments. increase growth parameters enhance grain yield 37% 31%, respectively. Potential study stress, have produce promoting substances stress significantly yield. These bacterial be used as biofertilizers improved sustainable agriculture.

Language: Английский

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Synergistic effects of biofilm-producing PGPR strains on wheat plant colonization, growth and soil resilience under drought stress

Saudi Journal of Biological Sciences, Journal Year: 2023, Volume and Issue: 30(6), P. 103664 - 103664

Published: April 28, 2023

Drought stress substantially impedes crop productivity throughout the world. Microbial based approaches have been considered a potential possibility and are under study. Based on our prior screening examination, two distinct novel biofilm-forming PGPR strains namely Bacillus subtilis-FAB1 Pseudomonas azotoformans-FAP3 encompassed in this research. Bacterial biofilm development glass surface, microtiter plate seedling roots were assessed characterized quantitatively qualitatively by light scanning electron microscopy. Above isolates further evaluated for their consistent performance inoculating wheat plants pot-soil system water stresses. moderate tolerance to ten-day drought was recorded application of individual with plants; however, FAB1 + FAP3 consortium expressively improved survival during drought. The displayed multifunctional plant growth stimulating attributes as well effective rhizosphere colonization combination which could provide sustained FAP3-induced alterations cooperatively conferred controlling physiological traits (gs, Ci, E, iWUE PN), indicators (SOD, CAT, GR, proline MDA content) also maintained physico-chemical hydrolytic enzymes including DHA, urease, ALP, protease, ACP β glucosidase soil. Our findings support future efforts enhance engineering rhizobacterial biofilms associated requires in-depth exploration exploiting native local agricultural application.

Language: Английский

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Pantoea agglomerans FAP10: A novel biofilm-producing PGPR strain improves wheat growth and soil resilience under salinity stress

Environmental and Experimental Botany, Journal Year: 2024, Volume and Issue: 222, P. 105759 - 105759

Published: April 3, 2024

Language: Английский

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Effect of indigenous mineral availing microbial consortia and cattle manure combination for growth of maize (Zea mays L.)

Vegetos, Journal Year: 2024, Volume and Issue: unknown

Published: April 23, 2024

Language: Английский

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