SELENIUM IN HIGHER PLANTS.
- N. Terry, A. Zayed, M. de Souza, A. Tarun
- Environmental ScienceAnnual Review of Plant Physiology and Plant…
- 28 November 2003
Recent advances in the understanding of the plant's ability to metabolize Se into volatile Se forms (phytovolatilization) are discussed, along with the application of phytoremediation for the cleanup of Se contaminated environments.
Chromium in the environment: factors affecting biological remediation
Chromium, in the trivalent form (Cr(III)), is an important component of a balanced human and animal diet and its deficiency causes disturbance to the glucose and lipids metabolism in humans and…
Phytoaccumulation of Trace Elements by Wetland Plants: I. Duckweed
There has been much interest recently in the use of constructed wetlands for the removal of toxic trace elements from wastewaters. Wetland plants play an important role in the trace elements removal…
Accumulation and volatilization of different chemical species of selenium by plants
Reduction from SeO4 to SeO3 appears to be a rate-limiting step in the production of volatile Se compounds by plants, and inhibitory effects of sulfate on the uptake and volatilization of Se may be reduced substantially if Se is supplied as, or converted to, SeO 3 and/or SeMeth rather than SeO 4.
Cadmium tolerance and accumulation in Indian mustard is enhanced by overexpressing gamma-glutamylcysteine synthetase.
- Y. Zhu, E. Pilon-Smits, A. Tarun, S. Weber, L. Jouanin, N. Terry
- BiologyPlant Physiology
- 1 December 1999
It is concluded that overexpression of gamma-ECS increases biosynthesis of glutathione and PCs, which in turn enhances Cd tolerance and accumulation, and appears to be a promising strategy for the production of plants with superior heavy metal phytoremediation capacity.
Chromium accumulation, translocation and chemical speciation in vegetable crops
The XAS speciation analysis indicates that CrO42− is converted in the root to Cr3+ by all plants tested, and a hypothesis for the differential accumulation and identical translocation patterns of the two Cr ions is proposed.
PHYTOACCUMULATION OF TRACE ELEMENTS BY WETLAND PLANTS: II. WATER HYACINTH
Wetland plants are being used successfully for the phytoremediation of trace elements in natural and constructed wetlands. This study demonstrates the potential of water hyacinth (Eichhornia…
Influence of Phosphorus Nutrition on Growth and Carbon Partitioning in Glycine max.
The results suggest that low-P treatment decreased soybean growth primarily through an effect on the expansion of the leaf surface which was diminished by 85%, the main effect oflow-P being on the rate of expansion of individual leaves.
Rhizosphere bacteria mobilize Zn for hyperaccumulation by Thlaspi caerulescens.
- S. N. Whiting, M. de Souza, N. Terry
- Environmental ScienceEnvironmental Science and Technology
- 28 June 2001
The present study shows that rhizosphere microbes play an important role in increasing the availability of water-soluble Zn in soil, thus enhancing Zn accumulation by T. caerulescens shoots.
Phytoaccumulation of Trace Elements by Wetland Plants: III. Uptake and Accumulation of Ten Trace Elements by Twelve Plant Species
Interest is increasing in using wetland plants in constructed wetlands to remove toxic elements from polluted wastewater. To identify those wetland plants that hyperaccumulate trace elements, 12…