Inoculation of Lens culinaris with Pb-resistant bacteria shows potential for phytostabilization

Jebara, Salwa Harzalli; Saadani, Omar; Fatnassi, Imen Challougui; Chiboub, Manel; Abdelkrim, Souhir; Jebara, Moez

doi:10.1007/s11356-014-3510-7

Cited by 26 publications

(8 citation statements)

References 38 publications

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“…This research revealed that the inoculation of Lathyrus sativus with efficient and resistant PGPR (I4 consortium) has markedly affected plants growth under lead stress (0.5 mM Pb), thus significantly increased the dry biomass of whole plant, as compared to uninoculated plants. These measurements are in agreement with the previous experiments which confirmed the effective role of combined inoculations of PGPR in stimulating shoot and root biomasses of different legumes under heavy metals stress [46,57,58]. Saadani et al [8] also confirmed the beneficial effect of co-inoculation with PGPR on growth of Vicia faba, Lens culinaris, and Sulla coronaria when cultivated in mine tailings that contain high proportions of Pb and Zn.…”

Section: Discussionsupporting

confidence: 89%

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Effect of Pb‐resistant plant growth‐promoting rhizobacteria inoculation on growth and lead uptake by Lathyrus sativus

et al. 2018

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In search of efficient and resistant plant growth-promoting rhizobacteria (PGPR) strains with multiple activities, a total of twelve bacterial belonging to R. leguminosarum, S. meliloti, Pseudomonas sp., P. fluorescens, Luteibacter sp., Variovorax sp., B. simplex, and B. megaterium were isolated from root nodules of grass pea (Lathyrus sativus L.) grown in contaminated soils. Upon screening, all test strains were able to synthesize indoleacetic acid; more than 90% were siderophore producers and 75% showed varying levels of phosphate solubilizing ability. The gaseous metabolite biosynthesis showed that 42% of strains were cyanogenic. The lead (Pb) bioaccumulation differs with incubation times between cell wall and cytoplasm. Indeed, the most part of Pb was adsorbed to cell surface. A pot experiment was conducted for investigating the capability of combined bacteria to promote plant growth of Lathyrus sativus under controlled conditions. Subsequently, the performance of symbiosis Lathyrus sativus-PGPR (I4: R. leguminosarum (M5) + B. simplex + Luteibacter sp. + Variovorax sp.) was investigated under lead stress using hydroponic culture to elucidate the effect of bacterial inoculation on Pb uptake as well as plant growth. Results showed that under 0.5 mM Pb, inoculation with I4 significantly increased shoots and roots biomass by 59% and 56%, respectively, and improved Pb uptake in both shoots and roots by 39% and 47%, respectively, as compared to uninoculated plants. The inoculation of Lathyrus sativus with efficient and Pb resistant PGPR is a promising symbiosis that having significant potential to improve phytoremediation of Pb-polluted soils.

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Section: Discussionsupporting

confidence: 89%

“…The bioaccumulation results showed that the potential to enhance Pb 2+ retention in selected PGPR was not only due to cell‐surface binding, but also to intracellular accumulation as also observed by Jebara et al . The most part of Pb 2+ was adsorbed to cell surface of all bacteria .…”

Section: Discussionsupporting

confidence: 70%

Effect of Pb‐resistant plant growth‐promoting rhizobacteria inoculation on growth and lead uptake by Lathyrus sativus

et al. 2018

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“…According to these results, the potential to enhance Pb 2+ retention in the selected PGPR was not only due to cell-surface binding, but it also was due to intracellular accumulation [25]. Similar results have also been reported by Jebara et al (2015) [26], denoting that PGPR microorganisms may reduce soil pH and increase soil Pb availability through releasing organic acids (e.g., carboxylic acid) [27].…”

Section: Resultssupporting

confidence: 83%

Neighbor Presence of Plant Growth-promoting Rhizobacteria (PGPR) and Arbuscular Mycorrhizal Fungi (AMF) Can Increase Sorghum Phytoremediation Efficiency in a Soil Treated with Pb Polluted Cow Manure

Baghaie

Aghilizefreei

2019

J Hum Environ Health Promot

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accumulate in living organisms and plants [1]. These elements enter the environment mainly through anthropogenic sources, such as smelting processes, mining, fuel production, and industrial effluents [2]. Therefore, use of proper approached to the reduction of heavy metal availability is essential. Conventional remediation approaches for contaminated soils, sediments, and groundwater are based on the technologies that have been developed over the past two decades [3], including a wide variety of physical, chemical, and thermal treatment alternatives and their combinations, as well as engineering Background: The present study aimed to evaluate the effects of PGPR and AMF on the changes in sorghum phytoremediation efficiency in the soil amended with lead (Pb)polluted cow manure. Methods: Treatments consisted of applying two rates of Pb [0 (Pb0) and 800 (Pb800) mg/kg] polluted cow manure [0 (C0) and 30 (C30) t/ha], two levels of AMF [without (AMF-) and with (AMF+)] and PGPR (without (PGPR-) and with (PGPR+) inoculation. Pseudomonas sp. R9 was considered as a PGPR bacteria. The plant used in this experiment was sorghum. Plant Pb concentration was measured using atomic absorption spectroscopy. Results: The highest plant Pb concentration belonged to the cultivated plant in the soil treated with 30 t/ha Pb-polluted cow manure, while the lowest that was observed in the soil without amending cow manure in the absence of PGPR or AMF. The presence of AMF significantly increased the Pb translocation value and sorghum phytoremediation efficiency by 8% and 13.4%, respectively. Conclusion: According to the results, the inoculated plant with PGPR and AMF had positive effects on increasing Pb phytoremediation efficiency that, which is notable in environmental studies. However, the effects of soil chemical properties on Pb phytoremediation efficiency cannot be overlooked. * This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.

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“…Similarly, co-inoculation of lentil with Pb-resistant bacteria (A. tumefaciens, R. aquatilis, and Pseudomonas sp.) increases CAT, SOD, and POD activities in plants under Pb stress [42]. An endophytic fungus (EF0801) benefits rice growth under moderate Pb stress by enhancing CAT, SOD, and POD and reducing MDA levels [12].…”

Section: Lead Bioavailability In Soil and Pb Accumulation And Uptake mentioning

confidence: 99%

Enhancement of Lead Phytoremediation by Perennial Ryegrass (Lolium perenne L.) Using Agent of Streptomyces pactum Act12

Cao¹

2016

J Pet Environ Biotechnol

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It has been well recognized that microbes can assist phytoremediation of lead (Pb) by promoting plant growth and metal uptake. However, little is known about the potential of soil inoculation with actinomycetes to enhance Pb uptake and translocation in plants, particularly in semi-arid water-deficient areas. This study was focused on exploring the resistance of a soil actinomycete strain (Streptomyces pactum Act12) to Pb and its effects on plant growth, antioxidant responses, Pb uptake and translocation in perennial ryegrass (Lolium perenne L.). Special attention was given to experimental conditions in semi-arid area in Northerwest China. A fermentation culture of Act12 was applied in powder form to soil with or without Pb treatment (0-1,000 mg kg-1), and ryegrass plants were immediately grown in this soil, in pots, for 60 days under 20% relative soil moisture. Act12 showed tolerance to up to 1,200 mg Pb L-1 in plate culture and well colonized the soil containing less than 500 mg Pb kg-1. Under Pb stress, inoculated plants had higher biomass with greater plant height and root tiller number than the uninoculated controls. Additionally, higher catalase, superoxide dismutase and peroxidase activities were detected in leaves of inoculated plants under Pb stress. Inoculating soil with Act12 significantly increased Pb concentrations and uptake in plants grown in soil containing 200 to 1,000 mg Pb kg-1. The translocation and bioconcentration factors of inoculated plants were 10.5-36.2% and 37.3-133.1% higher than uninoculated plants, respectively. Streptomyces pactum Act12 can enhance Pb phytoremediation by perennial ryegrass and its powder form facilitates the use in semi-arid areas.

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Inoculation of Lens culinaris with Pb-resistant bacteria shows potential for phytostabilization

Cited by 26 publications

References 38 publications

Effect of Pb‐resistant plant growth‐promoting rhizobacteria inoculation on growth and lead uptake by Lathyrus sativus

Effect of Pb‐resistant plant growth‐promoting rhizobacteria inoculation on growth and lead uptake by Lathyrus sativus

Neighbor Presence of Plant Growth-promoting Rhizobacteria (PGPR) and Arbuscular Mycorrhizal Fungi (AMF) Can Increase Sorghum Phytoremediation Efficiency in a Soil Treated with Pb Polluted Cow Manure

Enhancement of Lead Phytoremediation by Perennial Ryegrass (Lolium perenne L.) Using Agent of Streptomyces pactum Act12

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