Phytoremediation of Salt-Impacted Soils and Use of Plant Growth-Promoting Rhizobacteria (PGPR) to Enhance Phytoremediation

Gerhardt, Karen E.; MacNeill, Gregory J.; Gerwing, Perry D.; Greenberg, Bruce M.

doi:10.1007/978-3-319-52381-1_2

Cited by 23 publications

(12 citation statements)

References 111 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This could be due to the enhancement of the soil quality promoted by the plant and the consequent higher biological activity in the adjacent soil. Most Poaceae species are facultative halophytes that can grow under saline stress and can be used in the phytoremediation of salt-impacted soils (Gerhardt et al, 2017). These plants increase their sodium uptake capacity and reduce soil salinity and sodicity by increasing their root biomass and root hairs when stimulated by plant growth-promoting rhizobacteria (PGPR) (Hasanuzzaman et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Amelioration of Saline Stress on Chia (Salvia hispanica L.) Seedlings Inoculated With Halotolerant Plant Growth-Promoting Bacteria Isolated From Hypersaline Environments

et al. 2021

View full text Add to dashboard Cite

The rhizosphere and microbiome of halotolerant plants could be crucial for alleviating salinity stress during plant growth. The aims of this work were (1) to isolate bacteria from rhizosphere and bulk soil samples from the Salar del Hombre Muerto (Catamarca, Argentina), (2) to characterize different plant growth-promoting (PGP) activities produced by these bacterial isolates, and (3) to evaluate their effect on the initial growth of chia (Salvia hispanica L.) under saline stress. A total of 667 microorganisms were isolated, using different culture media with NaCl, and their abilities for nitrogen fixation, phosphate solubilization, siderophores production, and indole-3-acetic acid production were evaluated. Thirteen strains were selected for showing all the tested PGP activities; they belonged to the genera Kushneria, Halomonass, Pseudomonas, Planomicrobium, and Pseudarthrobacter. The strains Kushneria sp. and Halomonas sp. showed the highest salinity tolerance (from 50 to 2,000 mM NaCl) and biomass and biofilm production. Chia seeds were treated with six of the first 13 selected strains to evaluate their plant growth-promoting effect under saline stress (without and with 50 and 100 mM NaCl). Halomonas sp. 3R.12 and Kushneria sp. T3.7 produced heavier seedlings with a balanced shoot/root length ratio, while Pseudomonas sp. AN23 showed the best effect upon chia seedlings, with a morphological response similar to non-stressed seedlings. On the other hand, seedlings displayed no responses when inoculated with Planomicrobium sp. 3S.31 and Pseudarthrobacter sp. ER25. This study contributes to the knowledge on microorganisms from hypersaline environments as plant growth promoters for their use in the production of salt-sensitive crops, among other potential uses.

show abstract

Section: Discussionmentioning

confidence: 99%

Amelioration of Saline Stress on Chia (Salvia hispanica L.) Seedlings Inoculated With Halotolerant Plant Growth-Promoting Bacteria Isolated From Hypersaline Environments

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The bacterial degrade the complex structures of hydrocarbons and convert into soluble forms. Thereby, the nutrients are made available and easily absorbed by plant roots, restoring to improving tolerance to stress conditions (Muratova et al 2012;Hou et al 2015;Gerhardt et al 2017a;Gerhardt et al 2017b).…”

Section: Discussionmentioning

confidence: 99%

Influence of Bacterial Inoculation on Photosynthetic Capacity, Mineral Uptake, Total Protein and Amino Acid Content of Maize (Zea mays) under Diesel Stress

Ummara¹

2021

IJAB

View full text Add to dashboard Cite

This study was undertaken to explore the influence of diesel contaminated soil and bacterial consortium on photosynthetic efficiency, ion uptake, chlorophyll fluorescence, chlorophyll pigments, amino acids and total protein content of maize crop. The experiment was consisted of (a) two maize varieties (MMR1 yellow and Pearl white), (b) diesel levels (0, 1.5, 2.5, 3.5 g kg-1 soil) and (c) two bacterial strains inoculation levels, (non-inoculated) and inoculated with Pseudomonas aeruginosa BRRI54, Acinetobacter sp. ACRH80 and Acinetobacter sp. BRSI56 with completely randomized design having four replication The results exhibited that diesel contaminated soil decreased photosynthetic efficiency, photosynthetic pigments i-e., „a‟, „b, carotenoids, chlorophyll fluorescence and k+ content, however, there is increase in amino acid accumulation, total protein and Na+ uptake. But inoculation of different bacterial strains enhanced the photosynthetic capacity of PSII, quantum yield (Fv/Fm), K+ uptake as compared to non-inoculated group along with hydrocarbon stress. The marginal lands contaminated with diesel oil could be ameliorated with inoculation of bacterial strains, which are highly adapted to various farming systems. The maize crop could be successively grown on polluted soil which are contaminated with poly aromatic hydrocarbons. The small holding farming families will be greatly benefited to improve their crop yields. © 2021 Friends Science Publishers

show abstract

“…The pathway by which pollutants enter the plants depends upon their physicochemical properties including hydrophobicity, water solubility, and vapour pressure. Hydrophobicity is usually expressed as coefficient of octanol/water partition (K ow ), wherein a log of K ow value (0.5-3.5) make sure take-up of pollutants by plants whereas higher values mainly result in sorption to roots and insignificant translocation in aerial parts of plants (Gerhardt et al, 2017;Kuppusamy et al, 2017;Thomas et al, 2017). …”

Section: Phytoremediation: Using Green Technology To Restore Contaminmentioning

confidence: 99%

Plant-bacteria synergism: An innovative approach for the remediation of crude oil-contaminated soils

Fatima¹,

Imran²,

Naveed³

et al. 2017

View full text Add to dashboard Cite

show abstract

Phytoremediation of Salt-Impacted Soils and Use of Plant Growth-Promoting Rhizobacteria (PGPR) to Enhance Phytoremediation

Cited by 23 publications

References 111 publications

Amelioration of Saline Stress on Chia (Salvia hispanica L.) Seedlings Inoculated With Halotolerant Plant Growth-Promoting Bacteria Isolated From Hypersaline Environments

Amelioration of Saline Stress on Chia (Salvia hispanica L.) Seedlings Inoculated With Halotolerant Plant Growth-Promoting Bacteria Isolated From Hypersaline Environments

Influence of Bacterial Inoculation on Photosynthetic Capacity, Mineral Uptake, Total Protein and Amino Acid Content of Maize (Zea mays) under Diesel Stress

Plant-bacteria synergism: An innovative approach for the remediation of crude oil-contaminated soils

Contact Info

Product

Resources

About