Root establishment of perennial ryegrass (L. perenne) in diesel contaminated subsurface soil layers

Kechavarzi, Cédric; Pettersson, Karin; Leeds‐Harrison, P. B.; Ritchie, Laurie; Ledin, Stig

doi:10.1016/j.envpol.2006.03.039

Cited by 76 publications

(42 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The cumulative shoot (73 %) and root (79 %) dry matter of B. brizantha reflects the ability of this species to germinate, grow and develop in the presence of diesel at the highest diesel concentration (10 g kg -1 ), compared to the controls (Table 4). Similar findings were reported during the selection of plants for phytoremediation of diesel-and petroleum-contaminated environments using B. brizantha (Tesar et al, 2002;Merkl et al, 2005;Kechavarzi et al, 2007;Peng et al, 2009). Thus, preliminary plant tests are decisive for the success of phytoremediation and can contribute to an appropriate environment restoration in cases of accidental spills on soil surface.…”

Section: Plant Biomasssupporting

confidence: 75%

“…The negative effects of diesel on plant development, especially on biomass, were documented elsewhere. For instance, Kechavarzi et al (2007) observed an 8 % reduction in shoot biomass of L. perenne exposed to 0.025 g kg -1 diesel contamination after 52 days of tretament. Similarly, Palmroth et al (2002) reported a 64 % loss in biomass in grasses exposed to 0.5 % diesel (2.5 g kg -1 ) after 50 days.…”

Section: Plant Biomassmentioning

confidence: 99%

“…For comparison, the development of the leguminous plant Vicia sativa and the grass species Lolium multiflorum were not affected by diesel-contaminated soils (15 g kg -1 ) after 4 months of treatment (Adam & Duncan, 2003). The development of the grass species L. perenne exposed to a diesel concentrations of 25 g kg -1 reduced root and shoot growth significantly, as well as weight (reduction of 57 %) after 50 days of treatment (Kechavarzi et al, 2007).…”

Section: Plant Biomassmentioning

confidence: 99%

See 2 more Smart Citations

Potential of grasses and rhizosphere bacteria for bioremediation of diesel-contaminated soils

Mezzari¹,

Zimermann²,

Corseuil

et al. 2011

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

The techniques available for the remediation of environmental accidents involving petroleum hydrocarbons are generally high-cost solutions. A cheaper, practical and ecologically relevant alternative is the association of plants with microorganisms that contribute to the degradation and removal of hydrocarbons from the soil. The growth of three tropical grass species (Brachiaria brizantha, Brachiaria decumbens and Paspalum notatum) and the survival of root-associated bacterial communities was evaluated at different diesel oil concentrations. Seeds of three grass species were germinated in greenhouse and at different doses of diesel (0, 2.5, 5 and 10 g kg-1 soil). Plants were grown for 10 weeks with periodic assessment of germination, growth (fresh and dry weight), height, and number of bacteria in the soil (pots with or without plants). Growth and biomass of B. decumbens and P. notatum declined significantly when planted in diesel-oil contaminated soils. The presence of diesel fuel did not affect the growth of B. brizantha, which was highly tolerant to this pollutant. Bacterial growth was significant (p < 0.05) and the increase was directly proportional to the diesel dose. Bacteria growth in diesel-contaminated soils was stimulated up to 5-fold by the presence of grasses, demonstrating the positive interactions between rhizosphere and hydrocarbon-degrading bacteria in the remediation of diesel-contaminated soils.

show abstract

Section: Plant Biomasssupporting

confidence: 75%

Section: Plant Biomassmentioning

confidence: 99%

Section: Plant Biomassmentioning

confidence: 99%

See 1 more Smart Citation

Potential of grasses and rhizosphere bacteria for bioremediation of diesel-contaminated soils

Mezzari¹,

Zimermann²,

Corseuil

et al. 2011

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…The TPH degradation rate among various plant species depends on the microbial population in the rhizosphere of these plants. Many different plant species have been reported to be effective in the remediation of TPH-contaminated soil, including grass, alfalfa, poplar, and ryegrass (Phillips et al, 2009;Euliss et al, 2008;Kechavarzi et al, 2007). It was reported that perennial ryegrass and alfalfa increased the number of rhizosphere bacteria in hydrocarbon-contaminated soil (Kirk et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Characterisation of the rhizoremediation of petroleum-contaminated soil: effect of different influencing factors

et al. 2010

View full text Add to dashboard Cite

Abstract. Pilot experiments were conducted to analyse the effect of different environmental factors on the rhizoremediation of petroleum-contaminated soil. Different plant species (cotton, ryegrass, tall fescue and alfalfa), the addition of fertilizer, different concentrations of total petroleum hydrocarbons (TPH) in the soil, bioaugmentation with effective microbial agents (EMA) and plant growth-promoting rhizobacteria (PGPR) and remediation time were tested as influencing factors during the bioremediation process of TPH. The results show that the remediation process can be enhanced by different plant species. The order of effectiveness of the plants was the following: tall fescue > ryegrass > alfalfa > cotton. The degradation rate of TPH increased with increased fertilizer addition, and a moderate urea level of 20 g N (Nitrogen)/m 2 was best for both plant growth and TPH remediation. A high TPH content is toxic to plant growth and inhibits the degradation of petroleum hydrocarbons. The results showed that a 5% TPH content gave the best degradation in soil planted with ryegrass. Bioaugmentation with different bacteria and PGPR yielded the following results for TPH degradation: cotton+EMA+PGPR > cotton+EMA > cotton+PGPR > cotton > control. Rapid degradation of TPH was found at the initial period of remediation caused by the activity of microorganisms. A continuous increase of degradation rate was found during the 30-90 days period followed by a slow increase during the 90-150 days period. These results suggest that rhizoremediation can be enhanced with the proper control of different influencing factors that affect both plant growth and microbial activity in the rhizosphere environment.

show abstract

“…It is quite important for phytoremediation since it shows the capacity of the plant to respond to water and nutrient deficiency and a maintaining for stimulation of degrading microorganisms (Merkl et al 2005). Also, it may be a strategy so that the roots are able to reach uncontaminated areas (Kechavarzi et al 2007). In this study, there showed a slight decreasing tendency in the ratios of shoot to root of A. fruticosa seedlings growing in different concentrations of petroleum-contaminated soil compared with the ratio of those growing in uncontaminated soil.…”

Section: Resultsmentioning

confidence: 99%

The effects of petroleum-contaminated soil on photosynthesis of Amorpha fruticosa seedlings

Hou

Cui

Zhang

et al. 2016

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

Root establishment of perennial ryegrass (L. perenne) in diesel contaminated subsurface soil layers

Cited by 76 publications

References 23 publications

Potential of grasses and rhizosphere bacteria for bioremediation of diesel-contaminated soils

Potential of grasses and rhizosphere bacteria for bioremediation of diesel-contaminated soils

Characterisation of the rhizoremediation of petroleum-contaminated soil: effect of different influencing factors

The effects of petroleum-contaminated soil on photosynthesis of Amorpha fruticosa seedlings

Contact Info

Product

Resources

About