Accumulation of heavy metals in the organs of herbaceous plants

Reut, A. A.; Biglova, A. R.; Allayarova, Irina

doi:10.1051/e3sconf/202126502019

Cited by 6 publications

(3 citation statements)

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“…In studies with Hemerocallis hybrida growing on the cultural soil of the Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences, the content of arsenic in the leaves of different varieties was 0.02 mg/kg, in the rhizomes -0.04-0.09 mg/kg [8]. Camassia cusickii and varieties of the genus Narcissus grown on the culture soil of the South Ural have the ability to accumulate arsenic, which exceeds the maximum allowable concentrations (MAC) norms both in the bulbs and in the leaves, and the concentration of the toxicant in the aboveground and underground organs is variety-specific [9].…”

Section: Introductionmentioning

confidence: 99%

Toxic elements of hazard class I in ornamental herbal permanent plants

Reut

Beksheneva

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Technogenic emission of heavy metals (HM) leads to their accumulation and migration in the “soil-plant” system. Herbaceous perennials occupy a significant place among the landscaping components exposed to toxicants. The purpose of the research is to study the accumulation and distribution of elements of hazard class I in plants of the genus Iris L. The research was carried out in 2020-2021 on the basis of the South-Ural Botanical Garden-Institute. Objects of study: soil of the site and plant organs (Iris orientalis, I. pseudacorus, I. sibirica, I. spuria subsp. carthaliniae). The elemental composition was determined by the atomic absorption method with electrothermal atomization. The distribution of pollutants was evaluated using the biological absorption coefficient (BAC), total cumulation in vegetative and generative, as well as underground and aboveground organs. It is shown that the content of mobile forms of HM and metalloids in the soil does not exceed the maximum allowable concentrations (MAC) and averages: Cd – 0.03, As – 0.59, Pb – 0.48 mg/kg. It was found that the distribution of cadmium in organs depends on the species: both basipetal (I. orientalis – 0.05 mg/kg) and acropetal accumulation of the element (I. spuria subsp. carthaliniae – 0.05 mg/kg) are possible. Accumulation in above-ground organs exceeds cumulation in roots from 1.4 to 7.5 times. It was determined that the values of CBA for cadmium differ from 0.27 to 1.56. It was shown that the roots of I. orientalis, I. pseudacorus, I. spuria subsp. carthaliniae perform a barrier function and accumulate arsenic in amounts exceeding the MPC (0.67-0.85 mg/kg). The root system of I. sibirica does not prevent the entry of the toxicant concentrated in the generative organs at a concentration exceeding the MPC (0.61-0.78 mg/kg). It was determined that the CBA of arsenic in the leaves of all species is <1. Lead uptake is species-independent, as evidenced by close total elemental values, similar organ distribution, and consistently high MAC. A predominantly above-ground concentration of the pollutant was revealed (3.4-5.1). The result of the regression analysis showed that the content of the mobile form of lead in the soil does not affect its accumulation in the leaves.

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Section: Introductionmentioning

confidence: 99%

Toxic elements of hazard class I in ornamental herbal permanent plants

Reut

Beksheneva

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…The active components of representatives of the genus Iris exhibit antioxidant, cytotoxic, antimicrobial, antiviral, and immunomodulatory activities [2][3][4][5][6]. Secondary metabolites are concentrated in various parts of plants: iris leaves and rhizomes accumulate phenolic compounds, essential oils, seeds − glucomannans, rhizomes − iridal-type terpenoids, flowers − essential oils and flavones [7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the elemental composition of plant organs of the genus Iris L. (Iridaceae)

Reut

Beksheneva

2023

E3S Web Conf.

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Plants of the genus Iris L. are promising medicinal raw materials with significant biological and pharmacological activity. The aim of this work was a comparative study of the accumulation and transfer of elements through the organs of plants of the genus Iris L. (Iridaceae). The content of As, Cd, Cr, Cu, Mn, Ni, and Pb in different parts of I. orientalis, I. pseudacorus, I. sibirica and I. spuria plants was analyzed by atomic absorption. It has been established that in the absence of soil pollution, irises accumulate arsenic in concentrations exceeding the maximum allowable. The accumulation of chromium in the raw material was also above the maximum allowable concentration for a number of study options. The efficiency of element transfers from the soil to the root system varied significantly. Iris rhizomes absorbed nickel most actively. The assimilation ability of the roots is also clearly expressed in relation to Pb, As, Cr, Cu, Mn. Depending on the element, accumulation in leaves is species-specific. The carrying capacity of the peduncle is most pronounced in I. sibirica, the barrier capacity is most pronounced in I. orientalis. Various types of translocations of elements in organs were revealed: acropetal, uniform, basipetal. All studied species are characterized by acropetal distribution of Pb and uniform distribution of Mn. The location of Cd may vary depending on the species. Cu is concentrated in the roots (I. orientalis, I. sibirica, I. spuria) or evenly distributed (I. pseudacorus). The revealed patterns of accumulation and distribution of elements in the organs of plants of the genus Iris make it possible to carry out a prognostic assessment of the quality of raw materials to obtain safe products.

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“…В настоящее время в рамках развития отечественного цветоводства и сложившейся ситуации на мировом рынке декоративных растений, особое внимание следует уделить сохранению, поддержанию и созданию сортов российской селекции. Работы по созданию новых сортов цветочных культур проводятся в различных регионах нашей страны [8,9,13,20,22,26,28,29,31,[35][36][37][38][39][40]. Зона влажных субтропиков России не является исключением.…”

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