Screening Ornamentals for Their Potential as As Accumulator Plants

Reed, Sandra M.; Ayala-Silva, Tomas; Dunn, Christopher B.; Gordon, Garry; Meerow, Alan W.

doi:10.5539/jas.v5n10p20

Cited by 4 publications

(5 citation statements)

References 25 publications

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“…Results for plant growth and As uptake were reported in Reed, Ayala-Silva, Dunn, Gordon, and Meerow (2013). In summary, based on dry weight, tithonia and coreopsis did not produce enough biomass to merit consideration for bioremediation.…”

Section: General Commentsmentioning

confidence: 98%

“…Additional harvests could substantially increase the amount of As removed. The uptake ratio and translocation factor at 5.25 mg As L -1 solution for each species is as follows: coreopsis -73.0 and 0.07, tithonia -33.4 and 1.13, sunflower -16.6 and 0.88, iris 6.7 and 9.21, marigold -7.4 and 1.20, and switchgrass -1.5 and 0.16 (Reed, Ayala-Silva, Dunn, Gordon, & Meerow, 2013). …”

Section: Tissue Arsenic Concentrationmentioning

confidence: 99%

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Nutrient Uptake of Ornamental Plants Exposed to Arsenic in Hydroponic Solution

Reed¹,

Ayala-Silva²,

Dunn³

et al. 2013

JAS

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Arsenic-based agro-chemicals have contaminated considerable acreage on turf-farms, orchards, and around horticultural production structures. A study was undertaken to evaluate iris (Iris savannarum), switchgrass (Panicum virgatum), Tithonia rotundiflora, Coreopsis lanceolata, sunflower (Helianthus annuus), and marigold (Tagetes erecta) for their potential use as arsenic (As) accumulator plants. Plants were grown hydroponically with a modified Hoagland solution containing either 0, 10, 50 or 70 uM As (0.0, 0.75, 3.75, 5.25 mg L -1 , respectively). At 5.25 mg As L -1 solution there were no significant reductions in dry weight below that of the controls for iris marigold and sunflower. Maximum shoot As content (mg) for coreopsis and tithonia was reached at 0.75 and for switchgrass at 3.75 mg As L -1 solution. Iris marigold and sunflower maximum shoot As levels occurred at a solution concentration above 5.25 mg As L -1 solution, the high level used in this study. In general P decreased and S increased with increasing solution As. Marigold, switchgrass and sunflower, species that tolerated As at the levels used in this study, had a weak negative correlation between As and Cu concentrations in common. In these species As in hydroponic solution had no effect, or even slightly enhanced, P uptake compared to controls. Arsenic sensitive species coreopsis and tithonia had weak negative correlations between As and K and P in common.Coreopsis and tithonia appears to have a competitive uptake mechanism between arsenate with phosphate. Arsenic tolerance in iris appears to be a result of prohibiting As accumulation in root tissue.

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Section: General Commentsmentioning

confidence: 98%

Section: Tissue Arsenic Concentrationmentioning

confidence: 99%

Nutrient Uptake of Ornamental Plants Exposed to Arsenic in Hydroponic Solution

Reed¹,

Ayala-Silva²,

Dunn³

et al. 2013

JAS

Self Cite

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“…Calendula can be used for phytoremediation of soils with low level of Cr (up to 10 ppm).Whereas in rose a higher concentration of chromium was found in roots than in shoot of the plant. Reed et al [18] investigated arsenic phytoremediation with various ornamental crops and found that only small amount of arsenic was found in iris root and shoot. Tithonia and coreopsis were most sensitive to arsenic exposure but had higher uptake ratio even in low arsenic concentrations.…”

Section: Role Of Flowers and Ornamentals In Phytoremedia-tionmentioning

confidence: 99%

Phytoremediation of Heavy Metal Contaminated Soils Using Various Flower and Ornamentals

Swetha¹,

Rajasekar²,

Hudge³

et al. 2023

IJPSS

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Soil contamination has become a serious problem in many industrialized and developing countries. Indiscriminate dumping of urban and industrial effluents along with solid waste often lead to toxic accumulation of heavy metal ions which not only impair soil productivity but also cause health hazards by entering into food chain via soil-plant-animal/human route. With rapid urbanization and industrialization, large quantities of industrial effluents get mixed with sewage and river water [1]. Irrigating crop fields with such contaminated sewage water is being increasingly adopted by marginal farmers due to scarcity of irrigation water. It also inadvertently leads to addition of large quantity of heavy metals to the agro ecosystem [2]. Plants with abilities to hyperaccumulate, accumulate, exclude and indicate heavy metals are important in environmental remediation. Most phytoremediation studies are aimed at inorganic pollutants through different approaches defined as phytoextraction (the used of metal accumulating plants to transport and concentrate metals from the soil to roots and above ground biomass), rhizofiltration (the use of plant roots to absorb, precipitate, and concentrate toxic metals from polluted effluents), and phytostabilization (the use of plants to reduce the mobility of metals)

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“…Tithonia and Coreop-sis showed respectively 85% and 65% reductions in dry weight at 0.75 mg L -1 As concentration. At the highest As rate, marigold and sunflower had uptake ratios of 7.4 and 16.6, respectively, and TF near one, allowing consideration of these species as interesting candidates for As phytoremediation (Reed et al 2013).…”

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 99%

A review of the performance of woody and herbaceous ornamental plants for phytoremediation in urban areas

Capuana¹

2020

iForest

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Biogeosciences and Forestry Biogeosciences and Forestry A review of the performance of woody and herbaceous ornamental plants for phytoremediation in urban areas Maurizio Capuana Urban and periurban areas are often contaminated by several pollutants. Phytoremediation is considered to be an effective and eco-friendly strategy for the restoration of these contaminated lands. For this purpose, the exploitation of ornamental plants could be an additional option, due to their positive impact on the landscape. In this paper, we reviewed a selection of species which have been proposed for utilization in phytoremediation. Several tree species have been introduced in the past into urban environments for parks, gardens and avenues, with a selection studied for their capacity to absorb, tolerate, and translocate contaminants. Shrubby and herbaceous species are also commonly exploited for their ornamental features and are now studied for phytoremediation purposes. The responses of several effective species to the presence of heavy metals or dangerous organic compounds in the growth substrate are examined in this paper.

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Screening Ornamentals for Their Potential as As Accumulator Plants

Cited by 4 publications

References 25 publications

Nutrient Uptake of Ornamental Plants Exposed to Arsenic in Hydroponic Solution

Nutrient Uptake of Ornamental Plants Exposed to Arsenic in Hydroponic Solution

Phytoremediation of Heavy Metal Contaminated Soils Using Various Flower and Ornamentals

A review of the performance of woody and herbaceous ornamental plants for phytoremediation in urban areas

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