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<p>Wheat plays a crucial role in global food security. The hidden hunger, largely driven by deficiencies in iron (Fe) and zinc (Zn) continues to affect billions of people worldwide. The genetic fortification can raise mineral levels, yet phytates in wheat may reduce nutrient absorption and limit their bioavailability in the human body. This study aimed to pyramid high grain protein content (Gpc-B1), enhanced zinc (Zn) and iron (Fe) concentration, and yellow rust resistance (genes Yr15 and/or Yr36) in wheat through the development and evaluation of complex segregating populations while reducing phytic acid levels. Biochemical analyses in successive generations (CF<sub>2</sub>–CF<sub>4</sub>) identified lines with low phytic acid (&lt; 2.5&#xa0;mg/g), high protein content (&gt; 14%), and elevated Zn (up to 68.24&#xa0;ppm) and Fe (up to 49.8&#xa0;ppm) levels. Molecular marker-assisted selection confirmed the presence of Gpc-B1, Yr15, and Yr36 genes in selected lines. Eventually, nine elite lines demonstrated an ideal combination of nutritional traits, rust resistance, and favourable agronomic performance offering significant potential for biofortified wheat breeding programs.</p>

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Genetic reduction of phytic acid and enhancement of micronutrient content in wheat (Triticum aestivum L.) to improve micronutrient bioavailability

  • 期刊论文

  • 发表日期：

    2025年10月13日

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  • Jatinder Paul Kaur,
  • Praveenkumar Alagappan,
  • Satinder Singh,
  • Lenika Kashyap,
  • Inderpreet Dhaliwal,
  • Asish Kumar Padhy,
  • Vikas Kumar Verma,
  • Gurwinder Singh,
  • Arshvir Kaur Boparai,
  • Shivani Upadhyay,
  • Puja Srivastava,
  • G. S. Mavi,
  • Achla Sharma,
  • V. S. Sohu

摘要

Wheat plays a crucial role in global food security. The hidden hunger, largely driven by deficiencies in iron (Fe) and zinc (Zn) continues to affect billions of people worldwide. The genetic fortification can raise mineral levels, yet phytates in wheat may reduce nutrient absorption and limit their bioavailability in the human body. This study aimed to pyramid high grain protein content (Gpc-B1), enhanced zinc (Zn) and iron (Fe) concentration, and yellow rust resistance (genes Yr15 and/or Yr36) in wheat through the development and evaluation of complex segregating populations while reducing phytic acid levels. Biochemical analyses in successive generations (CF2–CF4) identified lines with low phytic acid (< 2.5 mg/g), high protein content (> 14%), and elevated Zn (up to 68.24 ppm) and Fe (up to 49.8 ppm) levels. Molecular marker-assisted selection confirmed the presence of Gpc-B1, Yr15, and Yr36 genes in selected lines. Eventually, nine elite lines demonstrated an ideal combination of nutritional traits, rust resistance, and favourable agronomic performance offering significant potential for biofortified wheat breeding programs.