Effect of mycorrhizal fungi on the phytoextraction of weathered p,p-DDE by Cucurbita pepo

White, Jason C.; Ross, Daniel W.; Gent, Martin P.N.; Eitzer, Brian D.; Mattina, MaryJane Incorvia

doi:10.1016/j.jhazmat.2006.05.012

Cited by 65 publications

(88 citation statements)

References 18 publications

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“…Most previous studies have found that AM fungi have positive effects on the dissipation of organic contaminants such as atrazine (Huang et al, 2007), PAHs (Joner et al, 2001;Joner and Leyval, 2003;Xu et al, 2006;Wu et al, 2008a), DDT (Wu et al, 2008b) and weathered p,p-DDE in soils (White et al, 2006), although no impact of AM fungi on PAH dissipation was observed by Binet et al (2000) and a depression in PAH dissipation in the presence of ectomycorrhizas (Joner et al, 2006;Genney et al, 2004) has also been reported. AM fungi may therefore play a critical role in the degradation of organic contaminants in soils.…”

Section: Introductionmentioning

confidence: 96%

Influence of Glomus etunicatum/Zea mays mycorrhiza on atrazine degradation, soil phosphatase and dehydrogenase activities, and soil microbial community structure

Huang

Zhang

et al. 2009

Soil Biology and Biochemistry

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a b s t r a c tThe effects of an arbuscular mycorrhizal (AM) fungus (Glomus etunicatum) on atrazine dissipation, soil phosphatase and dehydrogenase activities and soil microbial community structure were investigated. A compartmented side-arm ('cross-pot') system was used for plant cultivation. Maize was cultivated in the main root compartment and atrazine-contaminated soil was added to the side-arms and between them 650 or 37 mm nylon mesh was inserted which allowed mycorrhizal roots or extraradical mycelium to access atrazine in soil in the side-arms. Mycorrhizal roots and extraradical mycelium increased the degradation of atrazine in soil and modified the soil enzyme activities and total soil phospholipid fatty acids (PLFAs). Atrazine declined more and there was greater stimulation of phosphatase and dehydrogenase activities and total PLFAs in soil in the extraradical mycelium compartment than in the mycorrhizal root compartment when the atrazine addition rate to soil was 5.0 mg kg À1 . Mycelium had a more important influence than mycorrhizal roots on atrazine degradation. However, when the atrazine addition rate was 50.0 mg kg À1 , atrazine declined more in the mycorrhizal root compartment than in the extraradical mycelium compartment, perhaps due to inhibition of bacterial activity and higher toxicity to AM mycelium by atrazine at higher concentration. Soil PLFA profiles indicated that the AM fungus exerted a pronounced effect on soil microbial community structure.

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Section: Introductionmentioning

confidence: 96%

Influence of Glomus etunicatum/Zea mays mycorrhiza on atrazine degradation, soil phosphatase and dehydrogenase activities, and soil microbial community structure

Huang

Zhang

et al. 2009

Soil Biology and Biochemistry

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“…However, recent studies have observed that HOCs can be taken up by plant roots and subsequently acropetally translocated (White et al, 2003;Zhang et al, 2009;Inui et al, 2008;Tao et al, 2009;Åslund et al, 2008), and their uptake and translocation vary with plant species and are influenced by chemical properties and other factors. Studies about plant uptake of PBDEs are very limited (Huang et al, 2010(Huang et al, , 2011Mueller et al, 2006;Vrkoslavová et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Uptake, translocation, and debromination of polybrominated diphenyl ethers in maize

Zhao

Zhang

Wang

et al. 2012

Journal of Environmental Sciences

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Uptake, translocation and debromination of three polybrominated diphenyl ethers (PBDEs), , in maize were studied in a hydroponic experiment. Roots took up most of the PBDEs in the culture solutions and more highly brominated PBDEs had a stronger uptake capability. PBDEs were detected in the stems and leaves of maize after exposure but rarely detected in the blank control plants. Furthermore, PBDE concentrations decreased from roots to stems and then to leaves, and a very clear decreasing gradient was found in segments upwards along the stem. These altogether provide substantiating evidence for the acropetal translocation of PBDEs in maize. More highly brominated PBDEs were translocated with more difficulty. Radial translocation of PBDEs from nodes to sheath inside maize was also observed. Both acropetal and radial translocations were enhanced at higher transpiration rates, suggesting that PBDE transport was probably driven by the transpiration stream. Debromination of PBDEs occurred in all parts of the maize, and debromination patterns of different parent PBDEs and in different parts of a plant were similar but with some differences. This study for the first time provides direct evidence for the acropetal translocation of PBDEs within plants, elucidates the process of PBDE transport and clarifies the debromination products of PBDEs in maize.

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“…the use of living organisms to remediate polluted soils, is an emerging technology [2,3]. In the past two decades numerous studies have indicated that microbe-assisted phytoremediation may have some potential as an effective and inexpensive means to clean up polluted soils [4][5][6][7][8][9][10]. The successful application of these remediation techniques is largely dependent on the capacity of contaminant degraders or plant growth promoting microbes to efficiently colonize growing roots of plants of various species and nutrient status [10].…”

Section: Introductionmentioning

confidence: 99%

Influence of Rhizobium meliloti on phytoremediation of polycyclic aromatic hydrocarbons by alfalfa in an aged contaminated soil

Teng

Shen

Luo

et al. 2011

Journal of Hazardous Materials

151

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Effect of mycorrhizal fungi on the phytoextraction of weathered p,p-DDE by Cucurbita pepo

Cited by 65 publications

References 18 publications

Influence of Glomus etunicatum/Zea mays mycorrhiza on atrazine degradation, soil phosphatase and dehydrogenase activities, and soil microbial community structure

Influence of Glomus etunicatum/Zea mays mycorrhiza on atrazine degradation, soil phosphatase and dehydrogenase activities, and soil microbial community structure

Uptake, translocation, and debromination of polybrominated diphenyl ethers in maize

Influence of Rhizobium meliloti on phytoremediation of polycyclic aromatic hydrocarbons by alfalfa in an aged contaminated soil

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