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<p>Plants are sessile and are exposed to different abiotic stresses that cause physiological and biochemical changes, ultimately affecting growth with decreased productivity and yield. However, there are several mechanisms plants have evolved to cope with these stresses, allowing them to adapt and survive. Iron (Fe) is a micronutrient, and its role in plant growth is imperative. Upon Fe deficiency, plants employ sophisticated mechanisms to respond and uptake Fe from the rhizosphere. These mechanisms are regulated at transcriptional, post-transcriptional, translational, and post-translational levels. While the transcriptional regulation of the Fe deficiency response has been studied extensively, recent research has highlighted the importance of post-translational control in maintaining Fe homeostasis. Although less explored, evidence suggests that epigenetic interactions like histone modification and DNA methylation also play crucial roles in fine-tuning Fe homeostasis in plants. This review tried to showcase the involvement of epigenetics in modulating the Fe homeostasis in plants, mainly Arabidopsis and rice, based on studies carried out to date. A comprehensive understanding of the effects and mechanisms mediated by epigenetic responses will further provide critical knowledge of the complexities of Fe uptake, distribution, and storage in plants and contribute to improving Fe nutrition in plants.</p>

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Insights into Epigenetic Modulation of Iron Homeostasis in Plants

  • 期刊论文

  • 发表日期：

    2025年3月10日

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  • Pritam Sasmal,
  • Swakshar Som,
  • Rahul Patali,
  • Ushasi Nag,
  • Prapti Nath,
  • Surjit Singh

摘要

Plants are sessile and are exposed to different abiotic stresses that cause physiological and biochemical changes, ultimately affecting growth with decreased productivity and yield. However, there are several mechanisms plants have evolved to cope with these stresses, allowing them to adapt and survive. Iron (Fe) is a micronutrient, and its role in plant growth is imperative. Upon Fe deficiency, plants employ sophisticated mechanisms to respond and uptake Fe from the rhizosphere. These mechanisms are regulated at transcriptional, post-transcriptional, translational, and post-translational levels. While the transcriptional regulation of the Fe deficiency response has been studied extensively, recent research has highlighted the importance of post-translational control in maintaining Fe homeostasis. Although less explored, evidence suggests that epigenetic interactions like histone modification and DNA methylation also play crucial roles in fine-tuning Fe homeostasis in plants. This review tried to showcase the involvement of epigenetics in modulating the Fe homeostasis in plants, mainly Arabidopsis and rice, based on studies carried out to date. A comprehensive understanding of the effects and mechanisms mediated by epigenetic responses will further provide critical knowledge of the complexities of Fe uptake, distribution, and storage in plants and contribute to improving Fe nutrition in plants.