The Use of Indicator Plants in Locating Seleniferous Areas in Western United States. I. General

Beath, O. A.; Gilbert, Clément; Eppson, H. F.

doi:10.1002/j.1537-2197.1939.tb12900.x

Cited by 51 publications

(31 citation statements)

References 9 publications

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“…For instance, some plant species native to seleniferous areas in the Western United States, such as Astragalus bisulcatus (Fabaceae) and Stanleya pinnata (Brassicaceae) can hyperaccumulate selenium (Se) to levels as high as 10,000 mg Se kg −1 dry weight (Beath et al 1939;Galeas et al 2007). Selenium is an essential trace element for many organisms, but becomes toxic at elevated concentrations (Wilber 1980;Stadtman 1990).…”

Section: Introductionmentioning

confidence: 99%

Enhanced decomposition of selenium hyperaccumulator litter in a seleniferous habitat—evidence for specialist decomposers?

et al. 2010

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Selenium (Se) hyperaccumulation, when plant species accumulate upwards of 1,000 mg Se kg −1 dry weight (DW), protects plants from a variety of herbivores and pathogens. The objective of this study was to determine the effect of plant Se concentration on the rate of litter decomposition by invertebrates and microbes in a seleniferous habitat. Decomposition, Se loss, the decomposer community and soil Se concentration beneath leaf litter were compared between litter from two populations of the Se hyperaccumulator Astragalus bisulcatus (one population with 350 and the other with 550 mg Se kg −1 DW) and from the related non-accumulator species Astragalus drummondii and Medicago sativa containing 1-2 mg Se kg −1 DW using a litterbag method. High-Se litter decomposed faster than lowSe litter and supported more microbes and arthropods than low-Se leaf litter after 8 and 12 months, respectively. Soil collected from under high-Se litter had higher Se concentration than soil from beneath low-Se litter after 8 months. The higher decomposition rate and abundance of decomposers in highSe litter indicates the presence of Se-tolerant decomposers in this seleniferous habitat that may have contributed to increased decomposition rates of high-Se litter.

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Section: Introductionmentioning

confidence: 99%

Enhanced decomposition of selenium hyperaccumulator litter in a seleniferous habitat—evidence for specialist decomposers?

et al. 2010

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“…The genus Astragalus contains the majority of plant species that are Se hyperaccumulators. For instance Astragalus bisulcatus is a well-studied Se hyperaccumulator (Beath et al 1939;Rosenfeld and Beath 1964;Neuhierl and Böck 1996;Pickering et al 2003;Freeman et al 2006b;Galeas et al 2007). The genus Stanleya also contains at least one Se hyperaccumulating species, Stanleya pinnata (Beath et al 1939;Feist and Parker 2001).…”

Section: Introductionmentioning

confidence: 98%

“…Other species can accumulate 100-1,000 mg Se kg −1 DW when growing on seleniferous soil and are termed Se accumulators. There is a small group of so-called Se hyperaccumulating plants that accumulate more than 1,000 and up to 15,000 mg kg −1 DW (1.5%) of their DW as Se without toxicity (Beath et al 1939;Galeas et al 2007;White et al 2007). The genus Astragalus contains the majority of plant species that are Se hyperaccumulators.…”

Section: Introductionmentioning

confidence: 98%

Do selenium hyperaccumulators affect selenium speciation in neighboring plants and soil? An X-Ray Microprobe Analysis

Mehdawi

Lindblom

Cappa

et al. 2015

International Journal of Phytoremediation

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Neighbors of Se hyperaccumulators Stanleya pinnata and Astragalus bisulcatus were found earlier to have elevated Se levels. Here we investigate whether Se hyperaccumulators affect Se localization and speciation in surrounding soil and neighboring plants. X-ray fluorescence mapping and X-ray absorption near-edge structure spectroscopy were used to analyze Se localization and speciation in leaves of Artemisia ludoviciana, Symphyotrichum ericoides and Chenopodium album growing next to Se hyperaccumulators or non-accumulators at a seleniferous site. Regardless of neighbors, A. ludoviciana, S. ericoides and C. album accumulated predominantly (73-92%) reduced selenocompounds with XANES spectra similar to the C-Se-C compounds selenomethionine and methyl-selenocysteine. Preliminary data indicate that the largest Se fraction (65-75%), both in soil next to hyperaccumulator S. pinnata and next to nonaccumulator species was reduced Se with spectra similar to C-Se-C standards. These same C-Se-C forms are found in hyperaccumulators. Thus, hyperaccumulator litter may be a source of organic soil Se, but soil microorganisms may also contribute. These findings are relevant for phytoremediation and biofortification since organic Se is more readily accumulated by plants, and more effective for dietary Se supplementation.

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“…Selenium hyperaccumulation occurs in several genera, including the legume Astragalus (Beath et al, 1939). The hyperaccumulation likely serves an ecological function, since high Se levels can protect plants from a variety http://dx.doi.org/10.1016/j.jplph.2015.05.009 0176-1617/© 2015 Elsevier GmbH.…”

Section: Introductionmentioning

confidence: 99%

“…Interestingly, certain plant species have the ability to accumulate and tolerate extreme concentrations of Se in their tissues, upwards of 0.1% of DW (Beath et al, 1939). Selenium hyperaccumulation occurs in several genera, including the legume Astragalus (Beath et al, 1939).…”

Section: Introductionmentioning

confidence: 99%

Molybdenum accumulation, tolerance and molybdenum–selenium–sulfur interactions in Astragalus selenium hyperaccumulator and nonaccumulator species

DeTar

Alford

Pilon-Smits

2015

Journal of Plant Physiology

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The Use of Indicator Plants in Locating Seleniferous Areas in Western United States. I. General

Cited by 51 publications

References 9 publications

Enhanced decomposition of selenium hyperaccumulator litter in a seleniferous habitat—evidence for specialist decomposers?

Enhanced decomposition of selenium hyperaccumulator litter in a seleniferous habitat—evidence for specialist decomposers?

Do selenium hyperaccumulators affect selenium speciation in neighboring plants and soil? An X-Ray Microprobe Analysis

Molybdenum accumulation, tolerance and molybdenum–selenium–sulfur interactions in Astragalus selenium hyperaccumulator and nonaccumulator species

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