Investigation of uranium accumulation potential and biochemical responses of an aquatic weed Hydrilla verticillata (L.f.) Royle

Srivastava, Sudhakar; Bhainsa, Kuber C.; D’Souza, S.F.

doi:10.1016/j.biortech.2009.10.054

Cited by 57 publications

(28 citation statements)

References 36 publications

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“…That was observed from the relationship between phenolic compounds content in the four study plant species and concentrations of Uranium in the edible portions of these plants. This finding is in accordance with that obtained by Srivastava et al [10], where total phenolic compounds showed significant increase in response to Uranium exposure.…”

Section: Discussionsupporting

confidence: 94%

“…Total protein content was found to decline due to uptake of more U and Th in plants from coastal black sand soil. This finding is supported by Srivastava et al [10] who reported decline in the level of total soluble protein in Hydrilla verticillata after exposure to Uranium in comparison to the control treatment. This is in contrary to the results of Bajpai et al [38] that revealed a positive correlation between protein content and the heavy metal content of the plant.…”

Section: Discussionsupporting

confidence: 74%

“…[UO 2 ] 2+ has a strong affinity for phosphate moieties and sugar alcohol groups of nucleotides and polynucleotides and as such, causes DNA damage [10]. Yet, a wide range of organisms in both terrestrial and aquatic environments take up U including plants, bacteria, algae, and fungi [12].…”

Section: +mentioning

confidence: 99%

“…Variable responses in plants are induced upon U exposure, which are linked with the differences in Uranium bioavailability [4,5]. Recent studies show an increase in the production of Reactive Oxygen Species (ROS) and consequent stimulation of antioxidant defenses in response to U exposure similar to that observed upon exposure of plants to redox-active metals like Cu [10]. However, the effect of U on the plant's oxidative defense system is yet to be thoroughly investigated.…”

Section: +mentioning

confidence: 99%

“…Fundamental knowledge of biogeochemical behavior of these metal and processes involved in their environmental migration are also of particular importance for power generation, water supply, agriculture and environmental protection and remediation [9]. Environmental contamination caused by radionuclides, in particular Uranium (U) and its decay products, is a serious problem worldwide [10]. Uranium is the heaviest naturally occurring element, found in small amounts in soil, rock, surface water and groundwater.…”

Section: Introductionmentioning

confidence: 99%

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Variations of Plant Macronutrients and Secondary Metabolites Content in Response to Radionuclides Accumulation

Hegazy¹,

Sl²,

Hf³

et al. 2013

J Bioremed Biodeg

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Current knowledge on the basic radionuclide tolerance indicates that plants may develop mechanisms preventing the damaging effects of radionuclide stress. The radionuclides content was determined in the Mediterranean coastal black sand soil and in the edible portions of the four food crop plant species, viz., Eruca sativa, Lycopersicon esculentum, Pasidium guajava and Mangifera indica. Biochemical and nutritional constituents were assessed to elucidate the possible effect of radionuclides on the edible portions of the plants. The ability of the four study plant species to accumulate Uranium and Thorium in their edible portions from the coastal black sand soil is higher than that absorbed from the inland agricultural soils. The nutritional constituents were affected by the high concentrations of Uranium and Thorium in the plant tissues. The total protein, moisture content, total phenolic compounds, total chlorophyll, total carotenoids, β-Carotene and Lycopene were positively correlated with Uranium and Thorium concentrations in the plant tissues, while the mineral content, vitamin C and total flavonoids were suppressed by high concentrations of Uranium and Thorium in the plant tissues. The fluctuations in the biochemical or nutritional constituents of the plant edible portions are considered an important defense mechanism to control the redox state of the cells accumulating radionuclides with high levels. Journal of Bior emediation & Biodegradation

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Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 74%