Using vegetation to enhance <i>in situ</i> bioremediation

Erickson, Larry E.; Banks, M. Katherine; Davis, Lawrence C.; Schwab, A. P.; Muralidharan, N.; Reilley, K.; Tracy, John C.

doi:10.1002/ep.670130411

Cited by 40 publications

(20 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Uptake of chemicals into plants is governed by various processes of partitioning, transfer, and biotransformations [100,101]. Results of numerous studies have demonstrated the hyperaccumulation of heavy metals and organics in specific plant species, and these plant species are often used for the phytoremediation of toxic sediments and waste effluents [102–110]. Concerns regarding food web contamination, particularly the presence of pesticide residues in crop plants, have brought attention to plant uptake of toxins [111–124].…”

Section: Bioaccumulation and Phytoremediationmentioning

confidence: 99%

Use of plants for toxicity assessment of estuarine ecosystems

Lytle

2001

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Abstract-Estuarine ecosystems are being rapidly degraded by environmental toxicants from municipal and industrial wastes, agricultural runoff, recreational boating, shipping, and coastal development, ranking them as the most anthropogenically degraded habitat types on earth. Toxicity tests are used to establish links between adverse ecological effects and the toxicity of environmental chemicals. However, most toxicity tests used for regulating the release of chemicals into the environment have used animals as test species, with the erroneous assumption that toxicant levels protective of fish or invertebrates are also protective of plants. Most plant toxicity tests have used terrestrial crop plants, whereas the few aquatic test species used have been primarily freshwater algae. Even though estuarine and marine vascular plants are highly vulnerable to environmental chemicals, phytotoxicity studies using native coastal plants have been limited, and no such studies are required for testing by regulating agencies. The relevance of toxicity tests of estuarine sediments and of wastes entering the estuary should depend on the use of estuarine and marine plant species. This review summarizes toxicity testing of marine plants used in biomonitoring, phytotoxicity, biotransformations of toxicants, bioaccumulation, and phytoremediation. Challenges to marine plant testing are discussed and include developing standard test protocols, identifying species with minimal salinity and toxicant interaction, defining and choosing a suitable sediment for sedimentbound toxicant testing, selecting endpoints with low variability, producing viable seeds, and culturing test plants. Progress in acquiring a suitable database is being made, but at a rate that is inadequate to create the sound, scientific foundation needed for safeguarding our estuarine ecosystems in the near future.

show abstract

Section: Bioaccumulation and Phytoremediationmentioning

confidence: 99%

Use of plants for toxicity assessment of estuarine ecosystems

Lytle

2001

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

show abstract

“…Previous research has shown that phytoremediation is a cost-effective and environmentally friendly technology for the treatment of subsurface contamination using vegetation and has been successfully applied at sites containing a variety of organic compounds [4,5]. The mechanisms of phytoremediation systems comprise at least four pathways to reduce soil contaminants, such as abiotic losses (leachate, volatilization, photodegradation, irreversible sorption, chemical degradation and so on), indigenous microbial degradation, root tissues-enhanced dissipation and root-exudates-enhanced biodegradation.…”

Section: Introductionmentioning

confidence: 99%

Roles of abiotic losses, microbes, plant roots, and root exudates on phytoremediation of PAHs in a barren soil

Sun¹,

Cang²,

Wang³

et al. 2010

Journal of Hazardous Materials

186

View full text Add to dashboard Cite

“…Santharam et al (1994) modeled the enhanced biodegradation rate associated with increased microbial populations that occur in response to root exudates. They were able to give a reasonable fit to experimental results obtained by Reilley et al (1996) (see also Erickson et al [1994].) The amount of material exuded into the root zone is sufficient to support populations on the order of 10 8 to 10 9 bacteria per gram soil in the rhizosphere (Erickson et al 1995), corresponding to the energetic equivalent of about half a mmol glucose/kg/yr (references cited in Shimp et al 1993).…”

Section: Rhizosphere Effectsmentioning

confidence: 69%