Search Results - "Macfie, Sheila M."

Cadmium-induced plant stress investigated by scanning electrochemical microscopy by Zhu, Renkang, Macfie, Sheila M, Ding, Zhifeng

“…In vivo oxygen evolution above single stomata in Brassica juncea has been used to investigate, for the first time, the effect of Cd-induced stress as imaged by…”
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Sorption and leaching of benzalkonium chlorides in agricultural soils by Khan, Adnan Hossain, Macfie, Sheila M., Ray, Madhumita B.

“…The adsorption and leaching characteristics of two commonly used benzalkonium chlorides (BACs), benzyl dimethyl dodecyl ammonium chloride (BDDA) and benzyl…”
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Silver nanoparticles inhibit nitrogen fixation in soybean (Glycine max) root nodules by Boersma, Paul J., Lagugné-Labarthet, François, McDowell, Tim, Macfie, Sheila M.

“…Antimicrobial silver nanoparticles (AgNPs) are popular in consumer and industrial products, leading to increasing concentrations in the environment. We tested…”
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Toxicity reduction and improved biodegradability of benzalkonium chlorides by ozone/hydrogen peroxide advanced oxidation process by Khan, Adnan Hossain, Kim, Junwoo, Sumarah, Mark, Macfie, Sheila M., Ray, Madhumita B.

“…•O3/H2O2 treatment degraded BACs in synthetic and wastewater matrices.•Twenty-five intermediates with six different pathways were identified.•Toxicity of BACs…”
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Biodegradation of benzalkonium chlorides singly and in mixtures by a Pseudomonas sp. isolated from returned activated sludge by Khan, Adnan Hossain, Topp, Edward, Scott, Andrew, Sumarah, Mark, Macfie, Sheila M., Ray, Madhumita B.

“…•Pseudomonas sp. degraded two benzalkonium chlorides: BDDA and BDTA.•Although BDTA biodegraded at low concentration, it inhibited the degradation of BDDA.•For…”
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Localization and chemical speciation of cadmium in the roots of barley and lettuce by Akhter, Mst. Fardausi, Omelon, Christopher R., Gordon, Robert A., Moser, Desmond, Macfie, Sheila M.

“…•We examined the localization and speciation of Cd in lettuce and barley roots.•Radial movement of Cd was blocked by more effective barriers in roots of…”
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Cadmium and zinc accumulation in soybean: A threat to food safety? by Shute, Tracy, Macfie, Sheila M

“…A greenhouse study was conducted to quantify cadmium and zinc accumulated by soybean (Glycine max (L.) Merr.) when the metals were supplied separately and…”
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Uptake and phytotoxic effect of benzalkonium chlorides in Lepidium sativum and Lactuca sativa by Khan, Adnan Hossain, Libby, Mark, Winnick, Daniel, Palmer, John, Sumarah, Mark, Ray, Madhumita B., Macfie, Sheila M.

“…Cationic surfactants such as benzalkonium chlorides (BACs) are used extensively as biocides in hospitals, food processing industries, and personal care…”
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Compost application affects metal uptake in plants grown in urban garden soils and potential human health risk by Murray, Hollydawn, Pinchin, Trevor A., Macfie, Sheila M.

“…Purpose This study explores the effect of varying organic matter content on the potential human health risk of consuming vegetables grown in urban garden…”
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Does the Response of Insect Herbivores to Cadmium Depend on Their Feeding Strategy? by Konopka, Joanna K., Hanyu, Kazushi, Macfie, Sheila M., McNeil, Jeremy N.

“…Phytoremediation has been proposed for the elimination of toxic metals in soil, yet little attention has been given to the performance of insects that feed on…”
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Reduced translocation of cadmium from roots is associated with increased production of phytochelatins and their precursors by Akhter, Mst. Fardausi, McGarvey, Brian, Macfie, Sheila M.

“…Cadmium (Cd) is a non-essential trace element and its environmental concentrations are approaching toxic levels, especially in some agricultural soils…”
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Investigating the ability of Pseudomonas fluorescens UW4 to reduce cadmium stress in Lactuca sativa via an intervention in the ethylene biosynthetic pathway by Albano, Lucas J, Macfie, Sheila M

“…A typical plant response to any biotic or abiotic stress, including cadmium (Cd), involves increased ethylene synthesis, which causes senescence of the…”
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It takes an individual plant to raise a community: TRFLP analysis of the rhizosphere microbial community of two pairs of high- and low-metal-accumulating plants by Columbus, Melanie P., Macfie, Sheila M.

“…We used terminal restriction fragment length polymorphism (TRFLP) analysis to look at the microbial community profiles of the rhizosphere surrounding two pairs…”
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Colonization efficiency of different sorghum genotypes by Gluconacetobacter diazotrophicus by Yoon, Vanessa, Tian, Gang, Vessey, J. Kevin, Macfie, Sheila M, Dangi, Om P, Kumer, Anand K, Tian, Lining

“…BACKGROUND: Gluconacetobacter diazotrophicus is a nitrogen-fixing bacterium initially isolated from sugarcane plants. Endophytic diazotrophs have the potential…”
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Differential accumulation of cadmium in near-isogenic lines of durum wheat: no role for phytochelatins by Macfie, Sheila M., Bahrami, Shirin, McGarvey, Brian D.

“…Certain cultivars of some crops, including durum wheat ( Triticum durum Desf.), have a propensity to accumulate cadmium in the grain. In the 1980s, a Canadian…”
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Changes in microbial community structure and increased metal bioavailability in a metal-contaminated soil and in the rhizosphere of corn (Zea mays) by Mahrous, Nahed N., Columbus, Melanie P., Southam, Gordon, Macfie, Sheila M.

“…Metal-contaminated soils are common in many urban areas and are potentially toxic to plants and microorganisms. This study investigated metal bioavailability…”
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High variability of the metal content of tree growth rings as measured by synchrotron micro x-ray fluorescence spectrometry by Martin, Ronald R., Naftel, Steven J., Macfie, Sheila M., Jones, Keith W., Feng, Huan, Trembley, Chantelle

“…Synchrotron radiation analysis was used to investigate the metal content of tree rings collected from paper birch, Betula papyrifera Marsh, on transects…”
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Cadmium and zinc accumulation in soybean : A threat to food safety? by SHUTE, Tracy, MACFIE, Sheila M

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Production of organic acids and adsorption of Cd on roots of durum wheat (Triticum turgidum L. var. durum) by Adeniji, Bolaji A, Budimir-Hussey, Mackenzie T, Macfie, Sheila M

“…A number of isolines of durum wheat (Triticum turgidum var. durum) differ in their translocation of Cd. In the field, the high isolines accumulate twice the Cd…”
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Phytochelatins are only partially correlated with Cd-stress in two species of Brassica by Gadapati, Winona R., Macfie, Sheila M.

“…Synthesis of phytochelatins (PCs) is triggered in response to cadmium (Cd) and Cd-PC complexes are non-toxic. However, the relationship between PCs and…”
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