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<p>Rice (<i>Oryza sativa</i> L.) is one of the most important and economical sources of calories among the cereal crops. Among essential nutrients, iron (Fe) and zinc (Zn) are indispensable for maintaining life in almost all living organisms. Earlier, most of the studies aimed at increasing Fe and Zn content in rice grains have mainly focused on identifying natural variation in wild progenitor or related species. Recently, focus has been shifted to the identification of genomic regions and pathways associated with Fe and Zn content in rice. The present article, focused on the importance of mapping studies, identified the lists of QTLs, and marker-trait associations. Further, several characterized genes associated with grain Fe and Zn contents are listed and their roles in uptake and translocation are also discussed. Recent advances in biotechnology and omics techniques are also elaborated which may result into a step-change in targeted research on rice at the molecular level. Precision breeding strategies include the several promising approaches like genomic selection, haplotype-based breeding, genome editing, and system biology for increasing Fe and Zn content in rice have been highlighted. Besides this, major research areas associated with bioavailability of Fe and Zn have also been discussed. The information provided in this comprehensive review will certainly help in future to precision breeding strategies for the development of Fe and Zn enriched rice cultivars.</p>

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Precision breeding strategy to enrich iron and zinc in rice

  • 期刊论文

  • 发表日期：

    2025年12月12日

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  • Rajvir Kaur,
  • Rupinder Kaur,
  • Renu Khanna,
  • Gurjeet Singh,
  • Dinesh Kumar Saini,
  • Amandeep,
  • Kumari Neelam,
  • Navjot Sidhu,
  • Ranvir Singh Gill

摘要

Rice (Oryza sativa L.) is one of the most important and economical sources of calories among the cereal crops. Among essential nutrients, iron (Fe) and zinc (Zn) are indispensable for maintaining life in almost all living organisms. Earlier, most of the studies aimed at increasing Fe and Zn content in rice grains have mainly focused on identifying natural variation in wild progenitor or related species. Recently, focus has been shifted to the identification of genomic regions and pathways associated with Fe and Zn content in rice. The present article, focused on the importance of mapping studies, identified the lists of QTLs, and marker-trait associations. Further, several characterized genes associated with grain Fe and Zn contents are listed and their roles in uptake and translocation are also discussed. Recent advances in biotechnology and omics techniques are also elaborated which may result into a step-change in targeted research on rice at the molecular level. Precision breeding strategies include the several promising approaches like genomic selection, haplotype-based breeding, genome editing, and system biology for increasing Fe and Zn content in rice have been highlighted. Besides this, major research areas associated with bioavailability of Fe and Zn have also been discussed. The information provided in this comprehensive review will certainly help in future to precision breeding strategies for the development of Fe and Zn enriched rice cultivars.