Irina Shtangeeva- Researcher at St Petersburg University
Irina Shtangeeva
- Researcher at St Petersburg University
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67
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Introduction
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Position
- Reseacher
January 1979 - present
Publications
Publications (67)
The term of trace elements is widely used in different fields, including medicine, geochemistry, biogeochemistry, etc. There is now a large amount of information about many trace elements present in the environment at concentrations of 0.001% or just below this level. However, data on a great body of ultratrace elements (the elements whose concentr...
The rhizosphere of plants is a very dynamic system that can vary over time depending on the plant physiological state, its developmental stage and environmental conditions. The concentrations of many elements in the rhizosphere soil are also not constant. Until now, more attention has been paid to long-term (seasonal and annual) changes in the root...
Circadian rhythms are able to affect numerous physiological processes in plants. Now there is an understanding of circadian biology of model plant species Arabidopsis thaliana. The studies of the circadian clock function in other plants, especially perennial weeds, are still limited. In the research, Raman spectroscopy was used to estimate the diff...
The aim of the research was to study the distribution of gallium (Ga) in rhizosphere soil and in plants growing under natural conditions in uncontaminated sites, with an emphasis on temporal fluctuations of Ga concentration in plants. For this purpose, two field experiments were conducted in St. Petersburg, Russia, in 2019 and 2020, at two sites. T...
The use of stable isotopes of carbon (C) and nitrogen (N) in the investigation of physiological processes in plants has been constantly growing in recent decades. It is now well known that the isotope ratios of different elements can vary greatly depending on geographic location, and isotope ratio values are usually associated with the so-called "i...
Two greenhouse pot experiments were carried out to study the ability of wheat seedlings to accumulate thorium and bromine and estimate effects of the bioaccumulation of the trace elements on the plant development and concentrations of sodium, potassium and calcium. Wheat was capable of absorbing from contaminated soils large amounts of thorium and...
Background
The main aim of the research was to study short-term changes in the concentrations of elements in two widely distributed plant species, couch grass and nettle and in the rhizosphere soil of the plants.
Methods
The sampling of plants and soil was carried out on three dates: 3, 10, and 25 May 2021. On each day of sampling, the plants and...
Up to now, information about biogeochemistry of many trace elements is scarce. Meanwhile, all the elements are always present in soil and plants. It may be suggested that the trace elements also play certain role in the biogeochemical processes. The aim of the research was to study bioaccumulation of poorly investigated trace elements (scandium, ce...
Environmental pollution is becoming one of the most important global problems. Understanding the main factors affecting accumulation of toxic trace elements in consumed crops is of particular value. Unfortunately, possible toxicity of many trace elements is still poorly studied. The development of measures on identification of new potentially toxic...
The aim of the current research was to assess the impact of root exudates of widely distributed natural plant species, a monocot (couch grass) and a dicot (dandelion), on the total amount of carbon (C) and nitrogen (N) in the rhizosphere soils of these plants when they are grown separately or in close proximity to each other. A field trial was carr...
Information about biological significance and possible phytotoxicity of many trace elements is still scarce. Bromine and neodymium are among the poorly investigated trace elements. In the research, greenhouse experiment was conducted to study the effects of bromide of neodymium on wheat seedlings grown in soil and water. The wheat seedlings were ca...
Environmental pollution is serious problem all around the world. Over the past decades, several well-known heavy metals have received much attention of researchers, and new information has been collected on their toxicity. However, knowledge of environmental chemistry of many other potentially toxic trace elements is scarce, though it is known that...
There is no information yet about plant species capable of accumulating many different metals/metalloids. The plants feasible for phytoremediation aims must grow fast, have high biomass, deep roots, and should accumulate and tolerate a range of toxicants in their aerial parts. In our research, greenhouse and field experiments have been performed to...
The aim of the research was to assess the impact of root exudates of two widely distributed plant species, monocot (couch grass) and dicot (dandelion) on the concentrations of 27 macro- and trace elements in the rhizosphere soil of the plants. A field trial was carried out to study short-term variations in the concentrations of the elements when th...
The aim of the research was to study short-term variations in concentrations of 17 elements in two widely distributed natural plant species (couch grass and plantain) and in the rhizosphere soil of the plants. The plant and soil samples were collected in a field from a small site over a daytime. In the course of the day, the variations of the total...
A field study was carried out to estimate the variations in the concentrations of macro- and trace elements in the rhizosphere soil and in roots and leaves of three widely distributed plant species—couch grass, plantain, and yarrow collected simultaneously from two sites characterized by different soil parameters. Main attention was paid to environ...
The understanding of mechanisms of accumulation of trace elements in wheat is of critical importance. Although the knowledge on biogeochemistry of toxic metals and metalloids is quite extensive, list of the elements that attracted attention of researchers is rather short. Most of the information is limited to few elements, so-called heavy metals. U...
In this work, the response of wheat (Triticum aestivum L.), rye (Secale cereale L.), oat (Avena sativa L.), and pea (Pisum sativum L.) to bromides of potassium (KBr) and ammonium (NH4Br) was studied. All plants were capable of accumulating high concentrations of bromine (Br). However, the Br accumulation depended on the Br compounds presented in th...
The use of stable isotope techniques can assist in understanding interactions of plants with various abiotic and biotic processes. In the research, we focused on carbon (C) and nitrogen (N) isotopes because they are the most important resources influencing plant function and the biogeochemical cycles. The ¹³ C/ ¹² C and ¹⁵ N/ ¹⁴ N ratios in plants...
The aim of the research was to study a removal of polycyclic aromatic hydrocarbons (PAHs) and phytoextraction of bromine (Br) from contaminated soils. The experiments using pea and wheat seedlings as potential candidates for soil remediation were performed. The soil for the experiments was collected from a site slightly contaminated by some PAHs. B...
Till now information on bromine (Br) in the environment is still incomplete. The purposes of this research were the following: to study accumulation of Br in plants grown under different environmental conditions and to assess the factors controlling Br uptake by different plant species when the plants grow in soil uncontaminated with Br. For the de...
The paper describes investigation on bioaccumulation of mineral elements and identification of plants based on the concentrations of the elements in the plant leaves. Five native plant species (Elytrigia repens, Plantago major, Urtica dioica, Chelidonium majus, and Taraxacum officinale) were studied. To exclude the effects from different growth con...
Available online xxxx Bromine (Br) is widely distributed in the environment. However, its concentration in soils and plants in ordinary conditions is usually low. Bromine was excessively used in agriculture in the past, and now various compounds of Br are synthesized industrially and have many uses. This led to pollution of soil and accumulation of...
Biogeochemical cycles of bromine (Br) and its quantitative requirements for different plant species are still studied poorly. There is a need to examine Br pathways in plants and evaluate the factors important for Br accumulation in a plant. In the present work, the effects of different Br compounds on an uptake of Br by two plant species (wheat an...
The purposes of this research were (1) to compare level of uptake and accumulation of Eu and Ce by wheat and rye seedlings grown in soil spiked with these metals, (2) to estimate short-term variations of Eu and Ce in soil and in plants and (3) to study effects of Eu and Ce accumulation on concentrations of other macro- and trace elements in the pla...
The purposes of the research were (1) to estimate the ability of wheat Triticum aestivum L. to uptake antimony (Sb) from contaminated soil and water, (2) to study effects of Sb bioaccumulation on the plant development and distribution of macro- and trace elements in the plants, and (3) to compare uptake of Sb and some other elements by wheat seedli...
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Purpose
Environmental chemistry of antimony (Sb) is still largely unknown. Many questions remain about its availability to plants and effects of fertilizers on mobility of Sb in the rhizosphere soil. In this work, we focused on the following problems: (1) uptake of Sb by wheat seedlings grown in soil enriched with this metalloid and (2) impact of s...
In this research, green-house pot experiments were carried out to study uptake of As and Sb by wheat and oat seedlings and to assess effects of the toxicants on distribution of other elements in the plants. Both plant species were capable of accumulating As and Sb. Oat was more sensitive to toxic effects from accumulation of the metalloids compared...
In this research, green-house pot experiments were carried out to study the uptake of arsenic (As) and antimony (Sb) by wheat and oat seedlings and to assess the effects of the toxicants on the distribution of other elements in the plants. Both plant species were capable of accumulating As and Sb. Oats was more sensitive to toxic effects from accum...
The objectives of the research were to study how antimony (Sb) chemical form present in the growth medium can affect Sb uptake by plants and estimate effects of Sb on wheat and rye seedlings, in particular, assess variations in concentrations of nutrients resulting from bioaccumulation of Sb.
Seedlings were (1) germinated in media spiked with Sb(II...
![Fig. 2. Variations in root Sb concentration [A] (mean concentrations ±...](profile/Irina-Shtangeeva/publication/232395325/figure/fig2/AS:393420523753474@1470810170540/ariations-in-root-Sb-concentration-A-mean-concentrations-the-standard-deviation-and_Q320.jpg)
Antimony (Sb) is a toxic trace element widely distributed in the lithosphere and mainly associated with arsenic. Sb compounds are considered to be pollutants of high interest, however, the biogeochemical behaviour of Sb is still largely unknown, especially compared to other well-known toxic elements. In particular, questions remain about the availa...
The information on biogeochemistry of silver (Ag) is scarce and mechanisms of Ag uptake by plants are still unclear. We studied the impact of silver sulfate (Ag2SO4) and silver nitrate (AgNO3) on biomass of wheat seedlings, the rhizosphere proteins and uptake of nutrients and trace elements. Most part of Ag was accumulated in roots. Concentrations...
Large part of available literature on biogeochemistry of uranium and thorium refers to the studies performed either in highly contaminated areas or in nutrient solutions that have been artificially 'spiked' with radionuclides. Effects of background levels of natural radioactivity on soil-grown plants have not been studied to the same extent. In thi...
Results are summarized of several field and greenhouse experiments designed to estimate differences in the ability of some
plant species to take up from soil essential nutrients and various trace elements and transfer them from roots to upper plant
parts. Instrumental neutron activation analysis was used to determine concentrations of 22 elements i...
Introduction: Uranium and Thorium in the EnvironmentUranium and Thorium in SoilRadionuclides in PlantsPotential Health Effects of Exposure to U and ThReferences
Variations in concentrations of 24 elements in soils with loam and sandy loam texture and in Triticum aestivum wheat seedlings grown in the soils under greenhouse conditions were studied. Initial soils differed significantly in concentrations of 20 elements. Elemental composition of wheat seedlings depended on the soil where the plants were grown....
A detailed characterisation was carried out for soil sampled from sites with different levels of contamination before and after the cultivation of oats and barley. Mineralogical composition, concentration of exchangeable cations, dynamics of soil pH and acid neutralisation buffer capacity of the soil were studied. A total of 21 elements in the soil...
Although fertilisers enriched in rare earth elements (REE) are widely used in agricultural practice, little is known yet about behaviour of the REE in soil–plant system. Among REE, europium (Eu) may be of highest interest. Eu may serve as an indicator of biogeochemical processes due to a change of its valence state under different environmental con...
https://books.google.ru/books?id=TRzNBQAAQBAJ&pg=PA549&lpg=PA549&dq=Phytoremediation+of+trace+element+contaminated+soil+with+cereal+crops:+Role+of+fertilizers+and+bacteria+on+bioavailability&source=bl&ots=vW5TSbrQQz&sig=bHtJAlWqCqb_Cgw3Dxgi8ZhMg2g&hl=ru&sa=X&ei=tqaSVILYDaL8ywOe24DIAg&ved=0CCkQ6AEwAg#v=onepage&q=Phytoremediation%20of%20trace%20eleme...
The paper describes effects of uranium and thorium uptake on two native plant species wheat-grass (Triticum repens L.) and plantain (Plantago major). The experiment was performed in a field trial. The plants were watered with solutions of uranium, thorium, and a mixture of the two radio-nuclides and then collected after two days. Concentrations of...
INAA with thermal and epithermal irradiation has been applied for determination of 40 chemical elements in soils and different organs of plants. The time and spatial variations of elemental composition of plants and soils are studied.
Data on biogeochemistry of thorium are rather limited. So far little is known about toxic effects of small amounts of the radionuclide on higher plants. In this study the uptake of thorium by wheat seedlings was measured by greenhouse experiments. Germination of wheat seeds for 6 days in the presence of thorium resulted in accumulation of the metal...
Phytoremediation is increasingly used to remediate metal contaminated soils. However, in
order to provide technically efficient phytoremediation of contaminated sites the plant
yield and metal uptake have to be enhanced dramatically. The aim of the study was to find
appropriate combination of plant species and fertilizers capable of improving yield...
Although scandium is a relatively widespread element in the earth crust, until recently there has been little information on the environmental chemistry of the element. On the one hand, geochemical behaviour of Sc may be similar to that of many bi-and trivalent elements (Mg, Al, Ca, Ti, Mn, Fe, Zr, rare earth elements, Hf, Th, and U). On the other...
So far there is relatively little information on the behaviour of thorium in the environment. It is generally believed that mobility of thorium in soil is rather low. Th4+ is readily soluble, but may be quickly adsorbed or precipitated as hydrolysate. On the other hand, tetravalent thorium may be strongly complexed with soil organic matter. This ma...
Uptake of scandium (Sc) by wheat seedlings was studied during 6-d germination of wheat seeds in Sc supplemented medium and during 1-week growth of wheat seedlings germinated under normal conditions in soil amended with Sc. The most significant increase in Sc content in the seedlings was observed during germination of seeds in Sc supplemented medium...
Remediation of ecosystems that have been exposed to radionuclides is of great importance for many countries. At present the
remediation efforts using existing technologies are rather expensive. Phytoremediation can serve as a perspective method for
rehabilitation of the radioactive contaminated soils and wastes. Among other radio-nuclides, limited...
Recent concerns regarding environmental contamination have necessitated the development of appropriate technologies to assess the presence and mobility of metals in soil and estimate possible ways to decrease the level of soil metal contamination. Phytoremediation is an emerging technology that may be used to cleanup contaminated soils. Successful...
Pot experiments were carried out to assess the influence of two plantspecies on chemistry of polluted and unpolluted urban soils. Change in pHand acid neutralization capacity of the soils, as well as variations in elementalcomposition of soil leachates and in total concentrations of elements in thesoil were studied by INAA and ICP-AES. Concentratio...
Instrumental neutron activation analysis was used to determine concentrationsof 28 elements in soil, roots and leaves of wheat seedlings. To enhance theuptake of the elements, wheat seeds were treated by bacteria Cellulomas sp.32. In addition, a small amount of CaCl2 was added to the soil.The micro-organisms affected uptake of nutrients in such a w...
An attempt was undertaken to estimate the contribution of individual chemical elements to the rise of arterial hypertension. Instrumental neutron activation analysis was used to determine the concentrations of 23 chemical elements in hair of patients and healthy subjects. Mean concentrations as well as relationships between elements in both groups...
Neutron activation analysis was used for the determination of the elemental composition of different plants and soils. Variations in concentrations of elements during the day were found. Mean concentrations, standard deviations and relationships between elements in soils and different parts of plants were studied. It was shown that the behaviour of...
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