نتایج جستجو برای: hyperaccumulator
تعداد نتایج: 580 فیلتر نتایج به سال:
Even though antimony (Sb) and arsenic (As) are chemical analogs, differences exist on how they are taken up and translocated in plants. We investigated 1) Sb uptake, efflux and speciation in arsenic hyperaccumulator Pteris vittata after 1 d exposure to 1.6 or 8 mg/L antimonite (SbIII) or antimonate (SbV), 2) Sb uptake by PV accessions from Florida, China, and Brazil after 7 d exposure to 8 mg/L...
Two strategies of phytoextraction have been shown to have promise for practical soil remediation: domestication of natural hyperaccumulators and bioengineering plants with the genes that allow natural hyperaccumulators to achieve useful phytoextraction. Because different elements have different value, some can be phytomined for profit and others can be phytoremediated at lower cost than soil re...
The chemical forms of zinc (Zn) in the Zn-tolerant and hyperaccumulator Arabidopsis halleri and in the non-tolerant and nonaccumulator Arabidopsis lyrata subsp. petraea were determined at the molecular level by combining chemical analyses, extended x-ray absorption spectroscopy (EXAFS), synchrotron-based x-ray microfluorescence, and muEXAFS. Plants were grown in hydroponics with various Zn conc...
Copper (Cu) is essential to plants but can also be harmful due Fenton chemistry. Because of that, it necessary keep Cu within a narrow concentration limit. Plants evolved mechanisms sense and precisely regulate uptake accumulation avoid both deficiency toxicity. However, experience variable levels in soils, natural environments as well human’s-based farming practices that lead soils. Therefore,...
in plants, animals, and humans (Fowler, 1983). Remediation of arsenic-contaminated soils has thus become a Ladder brake (Pteris vittata L.) is a newly discovered arsenic major environmental issue. hyperaccumulator. No information is available about arsenic effects on ladder brake. This study determined the effects of different arsenic Current remediation methods for arsenic-contamiconcentration...
A comprehensive set of transcript sequences of the heavy metal hyperaccumulator Noccaea caerulescens
Arsenic is a metalloid widely distributed in the environment and of global concern for human health. In promising breakthrough sustainable arsenic soil remediation, fern, Pteris vittata L., was discovered to take up from accumulate it its fronds at ~100 times concentrations. Successively harvesting removes, or phytoextracts, with potential environmental economic benefits including low site dist...
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