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Abstract <p>The stress effect of endocrine-disrupting compounds nonylphenol and octylphenol on <i>Aphanizomenon flos-aquae</i>, the dominant representatives of cyanobacteria in freshwater bodies and seas during their “blooming,” was studied. Alkylphenols cause morphological and ultrastructural changes in <i>Aphanizomenon flos-aquae</i> cells. Inhibition of <i>A. flos-aquae</i> growth under the impact of alkylphenols is accompanied by development of oxidative stress in cyanobacterial cells. Adaptation of <i>A.&#xa0;flos-aquae</i> to alkylphenol-induced stress includes changes in the synthesis of the main photosynthetic pigments and enzymatic and nonenzymatic antioxidants. The ability of <i>A.&#xa0;flos-aquae</i> to degrade alkylphenols effectively was demonstrated for the first time.</p>

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Cellular Responses and Biodegradation of Long-Chain Alkylphenols by Cyanobacteria Aphanizomenon flos-aquae

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • T. B. Zaytseva,
  • A. D. Russu,
  • A. N. Ivanova,
  • I. L. Kuzikova,
  • N. G. Medvedeva

摘要

Abstract

The stress effect of endocrine-disrupting compounds nonylphenol and octylphenol on Aphanizomenon flos-aquae, the dominant representatives of cyanobacteria in freshwater bodies and seas during their “blooming,” was studied. Alkylphenols cause morphological and ultrastructural changes in Aphanizomenon flos-aquae cells. Inhibition of A. flos-aquae growth under the impact of alkylphenols is accompanied by development of oxidative stress in cyanobacterial cells. Adaptation of A. flos-aquae to alkylphenol-induced stress includes changes in the synthesis of the main photosynthetic pigments and enzymatic and nonenzymatic antioxidants. The ability of A. flos-aquae to degrade alkylphenols effectively was demonstrated for the first time.