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<p>Hg<sup>2+</sup> causes significant plant stress, adversely affecting growth and health by disrupting cell cycle equilibrium. Comprehensive studies of cell response under Hg<sup>2+</sup> in plant tissues are crucial for managing plant mercury. Our findings show a reduction in root apical meristem (RAM) region from 270&#xa0;μm to 190&#xa0;μm and decrease in cortical cell number from 66 to 42 in Hg<sup>2+</sup> treated seedlings compared with control. Fluorescence imaging further revealed that root tips expressing the cell division marker PlaCCI (plant cell cycle indicator) exhibited a higher frequency of cell division in the control group than in the treatment. This study highlights the cellular response of plants to Hg<sup>2+</sup> stress and provides a framework for future cell-level investigations of mercury toxicity in plants.</p>

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Interplay between mercury stress and plant cell response: a phenotypic perspective

  • 期刊论文

  • 发表日期：

    2025年10月20日

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  • Sumeera Asghar,
  • Zimo Zhao,
  • Ju Cai,
  • Zheng Zhu,
  • Faisal Hayat,
  • Chunli Chen,
  • Yan Li

摘要

Hg2+ causes significant plant stress, adversely affecting growth and health by disrupting cell cycle equilibrium. Comprehensive studies of cell response under Hg2+ in plant tissues are crucial for managing plant mercury. Our findings show a reduction in root apical meristem (RAM) region from 270 μm to 190 μm and decrease in cortical cell number from 66 to 42 in Hg2+ treated seedlings compared with control. Fluorescence imaging further revealed that root tips expressing the cell division marker PlaCCI (plant cell cycle indicator) exhibited a higher frequency of cell division in the control group than in the treatment. This study highlights the cellular response of plants to Hg2+ stress and provides a framework for future cell-level investigations of mercury toxicity in plants.