Trichoderma virens PDR-28: A heavy metal-tolerant and plant growth-promoting fungus for remediation and bioenergy crop production on mine tailing soil

Babu, A. Giridhar; Shim, Jaesool; Bang, Keuk Soo; Shea, Patrick J.; Oh, Byung Taek

doi:10.1016/j.jenvman.2013.10.009

Cited by 114 publications

(59 citation statements)

References 36 publications

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“…A number of studies have examined the spatial distribution of heavy metals and factors influencing their levels in roadside dust, soils, and crops [19][20][21][22]. Kristensson et al [23] found that gaseous emissions are higher in Sweden than in the USA and Switzerland, foremost due to the lower-fraction catalytic converters in Sweden.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Heavy Metal Contamination in Roadside Soils Along the Shenyang-Dalian Highway in Liaoning Province, China

Zhang

Caiqiu²,

Gong

et al. 2017

Pol. J. Environ. Stud.

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Heavy metal contaminations were assessed through a detailed soil survey in roadside soils along the Shenyang-Dalian Highway of Liaoning Province, China. Pb, Cu, Cd, Ni, and Zn were analyzed using atomic absorption spectrophotometry. The average concentrations of Pb, Cu, Cd, Ni, and Zn in roadside soils were 43.8, 26.5, 0.119, 32.1, and 71.3 mg/kg, respectively, and all concentrations exceeded the background values. Different heavy metal distribution patterns were found under different land use types. In farmland, a peak metal concentration occurred 25 m from the roadside soil, while in the forest and orchard soil all heavy metals decreased with distance from the roadside, which conformed to the exponential model. Heavy metal concentrations were markedly higher than those measured in 1999 and 2007, except for Cd. Concentrations in soils along the Shenyang-Dalian Highway were medium or low in comparison with roadside soils in other cities around the world. Overall, this assessment illustrates that heavy metal pollution in these soils is generally low, and we recommend that more attention should be given to Pb contamination in roadside soils along the Shenyang-Dalian Highway.

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Section: Introductionmentioning

confidence: 99%

Assessment of Heavy Metal Contamination in Roadside Soils Along the Shenyang-Dalian Highway in Liaoning Province, China

Zhang

Caiqiu²,

Gong

et al. 2017

Pol. J. Environ. Stud.

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“…Plant growth-promoting rhizosphere microorganisms (PGRPs) possess the important functions of accelerating nutrient availability and assimilation, improving plant productivity and suppressing disease-causing microbes and nematodes (Tyler et al, 2008;Munees and Mulugeta, 2014). PGRPs are frequently used as biofertilizers and compensate for the stress and reduction in plant growth caused by weed infestation, drought, heavy metals, salt and other unfavorable environmental (Amico et al, 2005;Robert et al, 2006;Groppa et al, 2012;Babu et al, 2014). These bacteria are of beneficial agricultural importance and belong to the genera Acetobacter, Acinetobacter, Alcaligenes, Arthrobacter, Azoarcus, Azospirillum, Azotobacter, Bacillus, Beijerinckia, Burkholderia, Derxia, Enterobacter, Gluconacetobacter, Klebsiella, Ochrobactrum, Pseudomonas, Rhodococcus, Serratia, Zoogloea, etc (Singh et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Screening and Identification of Harmful and Beneficial Microorganisms Associated with Replanting Disease in Rhizosphere Soil of Pseudostellariae heterophylla

Lin¹,

Dai²,

Chen³

et al. 2015

IJAB

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Pseudostellariae heterophylla, an important medicinal plant, has been shown to suffer from serious replanting disease that causes significant declines in both yield and quality. The objective of this study was to isolate the soil-born pathogen and antagonistic microorganism for investigation of the relationship between these microorganism and consecutive monoculture problems of P. heterophylla. In this study, we isolated the bacteria with different morphology from P. heterophylla rhizosphere soil, detected the pathogenicity of these bacteria to P. heterophylla plantlet and antagonistic ability to Fusarium of P. heterophylla biotype, identified their species and analyzed their abundance with qRT-PCR in rhizosphere soil of different planting years. We isolated Enterobacter sp1 and Burkholderia sp1 from P. heterophylla rhizosphere soil, and found Enterobacter sp1 possessed the pathogenicity to P. heterophylla plantlet and Burkholderia sp1 was antagonistic for Fusarium of P. heterophylla biotype. However, Burkholderia sp1 was not the antagonistic microorganism to Enterobacter sp1. The growth of Enterobacter sp1 was stimulated by phenolic acids at a certain concentration nearly closed to that in P. heterophylla rhizosphere soil, which increased as planting years of P. heterophylla increased. On the contrary, the phenolic acids had no promoting effect on the growth of Burkholderia sp1. And with the increase of planting years, the abundance of Burkholderia sp1 decreased and abundance of Enterobacter sp1 increased in the P. heterophylla rhizosphere soil. The results indicated that harmful microorganisms increase and beneficial microorganisms decrease, which were mediated by the accumulated autotoxins in rhizosphere soil of consecutively monocultured P. heterophylla, and hence leads to the imbalance of microbial community structure and the degradation of soil ecological function. So several abatement methods, such as crop rotation, specific microbial fertilizer and organic matter, could be used to improve the structure and functional diversity of microbial community, and overcome the obstacles of continuous cropping.

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“…The microbial stimulation of plants growing in a Cd 2+ -polluted environment, especially by rhizosphere bacteria and/or mycorrhizal fungi, was already confirmed by many experiments, e.g., Baum et al (2006), Azcon et al (2010), Garg and Aggarwal (2011) and Luo et al (2011). Much less attention has been paid to the role of saprophytic fungi in the plant growth promotion process, especially in the presence of heavy metals (Babu et al, 2014). Studies conducted on Paecilomyces lilacinus NH1 and Solanum nigrum L. (Gao et al, 2010), as well as Trichoderma spp.…”

Section: Introductionmentioning

confidence: 85%

“…and Zea mays (Babu et al, 2014), indicate the high potential of saprophytic fungi (especially those that originate from areas contaminated with heavy metals) for plant protection against Cd 2+ toxicity and stimulation of Cd 2+ accumulation in plant biomass. A key factor in evaluating the potential of selected plant-microorganism systems in phytoremediation treatments is to determine the efficiency of this process.…”

Section: Introductionmentioning

confidence: 99%

Analysis of microbiologically stimulated biomass of Salix viminalis L. in the presence of Cd2+ under in vitro conditions – implications for phytoremediation

Złoch¹,

Tyburski²,

Hrynkiewicz³

2015

Acta Biologica Cracoviensia S. Botanica

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The efficiency of phytoremediation might be highly affected by plant-associated microorganisms, and understanding of the underlying mechanisms is still a great challenge. The primary aim of this study was to evaluate the efficiency parameters for Cd 2+ accumulation in the biomass of willow (Salix viminalis) as well as to define the biochemical response of the host plant when it is inoculated with selected bacterial strains (Massilia sp. and Pseudomonas sp.) or saprophytic fungus (Clitocybe sp.) under controlled in vitro conditions. Inoculation of plants with bacterial strains affected the efficiency of phytoremediation process and was expressed as the quantity of accumulated Cd (Q), the bioaccumulation factor (BCF) and the translocation index (Ti); however, the effect was strain and plant organ specific. The level of hydrogen peroxide (H 2 O 2 ), which is both an indicator of plant response to biological and/or abiotic environmental stress and a molecule involved in plant-microbial interactions, decreased under the influence of Cd 2+ in uninoculated plants (plant growth was inhibited by Cd 2+ ) and increased in the inoculated variants of plants growing in the presence of Cd 2+ (microbiologically stimulated biomass). The saprophytic fungus Clitocybe sp. generally stimulated biomass and increased the level of H 2 O 2 synthesis in all the investigated plant organs and variants of the experiment. We suggest that determination of phytoremediation efficiency, and biochemical response (H 2 O 2 ) of the host plant under in vitro conditions can help in predicting the final effect of plant-microbial systems in further field trials. K Ke ey y w wo or rd ds s: : willow, bioremediation, cadmium, hydrogen peroxide (H 2 O 2 )

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Trichoderma virens PDR-28: A heavy metal-tolerant and plant growth-promoting fungus for remediation and bioenergy crop production on mine tailing soil

Cited by 114 publications

References 36 publications

Assessment of Heavy Metal Contamination in Roadside Soils Along the Shenyang-Dalian Highway in Liaoning Province, China

Assessment of Heavy Metal Contamination in Roadside Soils Along the Shenyang-Dalian Highway in Liaoning Province, China

Screening and Identification of Harmful and Beneficial Microorganisms Associated with Replanting Disease in Rhizosphere Soil of Pseudostellariae heterophylla

Analysis of microbiologically stimulated biomass of Salix viminalis L. in the presence of Cd2+ under in vitro conditions – implications for phytoremediation

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