Activity of low-molecular weight components of Larix sibirica antioxidant system under exposure to technogenic pollution

Калугина, О. В.; Afanasyeva, L. V.; Михайлова, Т. А.; Филинова, Н. В.

doi:10.1007/s10646-022-02607-6

Cited by 3 publications

(1 citation statement)

References 75 publications

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“…In the needles of Larix sibirica Ledeb, an increase in the total content of phenolic compounds (by 50-55%), flavonoids (by 1.5-1.8 times), catechins (by 1.9-2.5 times), and proanthocyanidins (by 45%) was noted compared with the background level. The described effects were observed at weak, moderate, and strong pollution levels due to large aluminum plant emissions, while at a critical level of pollution, the content of these metabolites decreased [20]. In the study of plants growing along the highways of the large city of Donbass, an increase in the concentration of flavonoids was revealed in the flowers of Sambucus nigra L., the fruit of Rosa lupulina Dubovik, as well as in the fruit, leaves, and flowers of Crataegus fallacina Klokov due to a decrease in the content of other phenolic compounds in the fruits of this species Crataegus [21].…”

Section: Flavonoidsmentioning

confidence: 92%

Phenolic Compounds of the Medicinal Plants in an Anthropogenically Transformed Environment

Vinogradova,

Chaplygin

et al. 2023

Molecules

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In this article, the impact of an anthropogenically transformed environment on the content of pharmaceutically valuable biologically active compounds in medicinal plants is analyzed. The studied biologically active substances included phenolic compounds (flavonoids, anthocyanins, tannins, and phenolic acids). The number of transmissible forms of heavy metals (HMs), including cadmium, lead, and mercury, were discharged from factories that are present in the soil. Plants uptake these toxic metals from the soil. HM causes changes in the activity of the several enzymes such as phenylalanine ammonia lyase (PAL), chalcone synthase (CHS), chalcone isomerase (CHI) and other enzymes. These enzymes play an important role in biosynthesis of phenolic compounds in medicinal plants. It has been demonstrated that plant materials possess high antioxidant potential due to their high phenolic content. As a result, the present review discusses a thorough investigation of anthropogenically transformed environment effects on the quantity of pharmaceutically valuable phenolic compounds in medicinal plants.

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Section: Flavonoidsmentioning

confidence: 92%

Phenolic Compounds of the Medicinal Plants in an Anthropogenically Transformed Environment

Vinogradova,

Chaplygin

et al. 2023

Molecules

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Anatomical and morphological changes in Pinus sylvestris and Larix sibirica needles under impact of emissions from a large aluminum enterprise

Kalugina,

Afanasyeva,

Mikhailova

2024

Ecotoxicology

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Species-speci c anatomical and morphological changes of Scots pine and Siberian larch needles were studied at different levels pollution by aluminum smelter emissions. Anatomical parameters were found to change nonlinearly in polluted needles as a result of pathological exposure to pollutants. In pine, negative anatomical changes include the following: reduction of the cross-sectional area of needles, central cylinder and conductive bundles, reduction of the thickness of the external tissues and mesophyll, reduction of resin channels and a decrease in their diameter. At a critical level of pollution, when the content of pollutants in pine needles reaches maximum values, certain changes in anatomical parameters in the remaining green needles are presumably adaptive. In larch needles at low, moderate and high levels of needles pollution, the anatomical changes found can be classed as adaptive -this is an increase in needles mass, thickness and width, thickness of the epidermis, mesophyll, cross-sectional area of needles. Larch needles, even at a critical pollution level, show no signi cant anatomical abnormalities. Negative morphological changes of pine include a decrease in the size of needles and shoots, their mass and the number of needles on shoots, in larch -a decrease in the length of needles and shoots, the number of brachiblasts. The results obtained suggest that indicators of the development of pathological processes in both pine and larch exposed to pollution are changes in the number of visual and morphological parameters of tree needles and shoots. Both showed a high level of correlation with the content of pollutants in the needles.

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Anatomical and Morphological Changes in Scots Pine and Siberian Larch Needles Under Impact of Emissions From a Large Aluminum Enterprise

Калугина

Михайлова

Afanasyeva

2023

Preprint

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Species-specific anatomical and morphological changes of Scots pine and Siberian larch needles were studied at different levels pollution by aluminum smelter emissions. Anatomical parameters were found to change non-linearly in polluted needles as a result of pathological exposure to pollutants. In pine, negative anatomical changes include the following: reduction of the cross-sectional area of needles, central cylinder and conductive bundles, reduction of the thickness of the external tissues and mesophyll, reduction of resin channels and a decrease in their diameter. At a critical level of pollution, when the content of pollutants in pine needles reaches maximum values, certain changes in anatomical parameters in the remaining green needles are presumably adaptive. In larch needles at low, moderate and high levels of needles pollution, the anatomical changes found can be classed as adaptive – this is an increase in needles mass, thickness and width, thickness of the epidermis, mesophyll, cross-sectional area of needles. Larch needles, even at a critical pollution level, show no significant anatomical abnormalities. Negative morphological changes of pine include a decrease in the size of needles and shoots, their mass and the number of needles on shoots, in larch – a decrease in the length of needles and shoots, the number of brachiblasts. The results obtained suggest that indicators of the development of pathological processes in both pine and larch exposed to pollution are changes in the number of visual and morphological parameters of tree needles and shoots. Both showed a high level of correlation with the content of pollutants in the needles.

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Activity of low-molecular weight components of Larix sibirica antioxidant system under exposure to technogenic pollution

Cited by 3 publications

References 75 publications

Phenolic Compounds of the Medicinal Plants in an Anthropogenically Transformed Environment

Phenolic Compounds of the Medicinal Plants in an Anthropogenically Transformed Environment

Anatomical and morphological changes in Pinus sylvestris and Larix sibirica needles under impact of emissions from a large aluminum enterprise

Anatomical and Morphological Changes in Scots Pine and Siberian Larch Needles Under Impact of Emissions From a Large Aluminum Enterprise

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