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Abstract <p>The article presents the results of a search for patterns of the changes in allelopathic activity of the invasive species <i>A. negundo</i> L. on soils with a gradient of contamination. In leaf samples from 29 districts of Moscow with different total indicators of soil pollution with heavy metals, the content of phenolic antioxidants and phytotoxicity of aqueous extracts was determined in a biotest. The content of phenolic antioxidants in <i>A. negundo</i> leaves in the range from 13 ± 0.26 to 41.15 ± 2.92 mg/g correlated with the level of soil pollution. The phytotoxicity of aqueous leaf extracts decreased statistically significantly along the gradient of increased soil pollution and correlated with it. The formation of metal-organic complexes with absorbed heavy metal ions is assumed, in which the substances responsible for allelopathic properties perform the function of ligands. The role of pre-adaptations in the field of chemical competition for mineral nutrition elements mediated by the synthesis and accumulation of phytotoxic chelating substances in the invasive success of <i>A.&#xa0;negundo</i> is discussed.</p>

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Ash-Leaved Maple (Acer negundo L.) Allelopathy on Polluted Moscow Soil

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • O. A. Vorobyova,
  • E. V. Chernyaeva,
  • D. A. Rysenkov,
  • V. P. Viktorov

摘要

Abstract

The article presents the results of a search for patterns of the changes in allelopathic activity of the invasive species A. negundo L. on soils with a gradient of contamination. In leaf samples from 29 districts of Moscow with different total indicators of soil pollution with heavy metals, the content of phenolic antioxidants and phytotoxicity of aqueous extracts was determined in a biotest. The content of phenolic antioxidants in A. negundo leaves in the range from 13 ± 0.26 to 41.15 ± 2.92 mg/g correlated with the level of soil pollution. The phytotoxicity of aqueous leaf extracts decreased statistically significantly along the gradient of increased soil pollution and correlated with it. The formation of metal-organic complexes with absorbed heavy metal ions is assumed, in which the substances responsible for allelopathic properties perform the function of ligands. The role of pre-adaptations in the field of chemical competition for mineral nutrition elements mediated by the synthesis and accumulation of phytotoxic chelating substances in the invasive success of A. negundo is discussed.