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Karavaev, V. A.; Baulin, A. M.; Gordienko, T. V.; Dovyd'kov, S. A.; Тихонов, А. Н.

doi:10.1023/a:1009042429685

Cited by 19 publications

(3 citation statements)

References 14 publications

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“…Even more, a slight increase in chlorophyll a concentration was observed. Our results contradict to other studies where negative Cd impact on plant physiology was observed (Žaltauskaitė, Šliumpaitė, 2013a;2013b;Kummerová et al, 2010), though are in line with those reporting slight increase in chlorophyll concentration in plants growing in contaminated soil (Karavaev et al, 2001). High concentrations of heavy metals weaken the activity of photosynthesis enzymes, also block electron transport in the chain, resulting in a decrease in total chlorophyll content (Thapar et al, 2008).…”

Section: Recutita Grown For 4 Weeks In Soil Polluted With CDcontrasting

confidence: 64%

Response of chamomile Matricaria recutita to low and moderate soil cadmium pollution

Narkevičiūtė¹,

Žaltauskaitė²

2020

EREM

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The aim of this study was to evaluate the effects of soil cadmium (Cd) pollution to the growth and quality of medicinal herbs plant chamomile (Matricaria recutita L.) and their extracts. The plants were grown in soils contaminated with Cd (3, 6, 12 mgCd/kg) for four weeks. The morphological, physiological, biochemical parameters and the content of Cd in chamomile tissues and infusions were determined. The results of this study showed that soil contamination with Cd had no adverse effect to the aboveground biomass of chamomile, but slightly reduced root biomass. Cd treatment significantly reduced the number of flowers and their dry weight. Cd soil pollution had no significant adverse effect on the content of photosynthetic pigments, though induced lipid peroxidation and an increase in MDA content was recorded. Cadmium concentrations in the plant tissues and extracts increased along with Cd concentration in the soil. It was found that Cd concentrations in chamomile flowers and infusions were above the maximum allowable Cd levels in medicinal plants and drinking water. This study demonstrated that the use of chamomile products may pose a risk to human health even if chamomiles are growing at environmentally relevant Cd soil concentration.

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Section: Recutita Grown For 4 Weeks In Soil Polluted With CDcontrasting

confidence: 64%

Response of chamomile Matricaria recutita to low and moderate soil cadmium pollution

Narkevičiūtė¹,

Žaltauskaitė²

2020

EREM

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“…As the index increases, the function of the antenna complexes of photosystem II decreases [22]. According to earlier studies [23], even at high concentrations of heavy metal ions, the chlorophyll a∕b ratio remains virtually unchanged, which indicates the invariance of the stoichiometric ratio between the complexes of the reaction centers of photosystems I and II and the light-harvesting complex of photosystem II. As a result of the studies, it was revealed that the chlorophyll a/b ratio exceeded the control group only during the period of rehabilitation from one-hour exposure to lead ions, which indicates the relative resistance of the C. demersum pigment complex to the effects of heavy metals.…”

Section: Resultsmentioning

confidence: 94%

The influence of lead ions, cationic synthetic surfactants and their combinations on the pigment composition of tissues of plant organisms in water bodies Ceratophyllum demersum and Egeria densa

Makurina,

Goryacheva,

Medvedev

et al. 2023

E3S Web of Conf.

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The mass of man-made chemical elements entering water bodies along with wastewater is gradually increasing, causing a lot of negative consequences. Plant organisms of water bodies are among the first to experience the effects of any anthropogenic pollutants and especially heavy metals and surfactants, the amount of which increases in the water of rivers and lakes. Changes in the ratio of the pool of green and yellow enzymes in aquatic plants are considered as a reliable diagnostic indicator of the development of disorders in plant cells due to technogenic influences. Changes in the content of photosynthetic pigments in plants of two species (Ceratophyllum demersum and Egeria densa) were monitored when they were exposed to very common technogenic substances (lead ions and a solution of cationic synthetic surfactants). The changes found in the quantitative content of photosynthetic pigments in aquatic plants are caused by the appearance and development of stress and some adaptation to it. Under these conditions, the structures of proteins and lipids of thylakoid membranes change, the level of ATP decreases, free radical processes are activated and the intensity of photosynthesis is inhibited. Thus, the action of lead ions, a solution of cationic synthetic surfactants, and especially their combination have a very negative effect on the tissues of Ceratophyllum demersum and Egeria densa, which is expressed in a change in the content of photosynthetic pigments and their ratio.

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“…Stress factors can affect the level of chlorophyll a and b. With an increase in the first indicator, the function of the antenna complexes of photosystem II clearly decreases [22,23]. As a result of the studies, it was revealed that the level of chlorophyll a and b changed relative to the control group, which indicates the dynamics of the plant pigment complex to the effects of heavy metals.…”

Section: Resultsmentioning

confidence: 99%

Impact of anionic synthetic surfactants of lead ions and their combinations on the pigment profile of freshwater plant organisms Ceratophyllum demersum and Egeria densa

Kropova,

Medvedev,

Kartashev

et al. 2024

BIO Web Conf.

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The development of human civilization inevitably leads to the development of production with increasing emissions of many chemicals into the environment. This is especially noticeable in relation to surface waters of fresh water bodies. A very alarming point is that the amount of toxic anthropogenic substances, including heavy metals, is growing every year and is increasingly disturbing the existing ecological balance. Plant organisms of water bodies are among the first to experience the effects of any anthropogenic pollutants and especially heavy metals and surfactants, the amount of which increases in the water of rivers and lakes. Very important in this is the complex of morpho-physiological adaptations associated with restructuring in the structure of chloroplasts. Changes in the content of photosynthetic pigments in plants of two species (Ceratophyllum demersum and Egeria densa) were assessed when they were exposed to very common technogenic substances (lead ions and a solution of anionic synthetic surfactants). In plants, there is a decrease in the activity of molecular transport, inhibition of H+-ATPase, leading to a decrease in the pH of the cytoplasm and activation of hydrolases, which enhance the breakdown of biopolymers. This leads to changes in the expression of individual genes and increased synthesis of a number of stress proteins. Under these conditions, the assembly of cytoskeletal elements is activated, the structures of membrane proteins and lipids change, the level of ATP decreases, free radical processes are activated and the intensity of photosynthesis is inhibited.

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Untitled

Cited by 19 publications

References 14 publications

Response of chamomile Matricaria recutita to low and moderate soil cadmium pollution

Response of chamomile Matricaria recutita to low and moderate soil cadmium pollution

The influence of lead ions, cationic synthetic surfactants and their combinations on the pigment composition of tissues of plant organisms in water bodies Ceratophyllum demersum and Egeria densa

Impact of anionic synthetic surfactants of lead ions and their combinations on the pigment profile of freshwater plant organisms Ceratophyllum demersum and Egeria densa

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