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<p>Iron (Fe) and sulphur (S) deficiency in soil are becoming serious concerns to the global wheat production system. The interaction between these two nutrients is critical for their availability, absorption, and transport in wheat. The alteration of root system architecture (RSA) and phytosiderophores (PS) release during nutrient deficiency may play a significant role in regulating the interactive metabolism of Fe and S in wheat. For this, bread and durum wheat plants were raised on Fe deficient (1&#xa0;µM) and Fe sufficient nutrient solution (100&#xa0;µM) under different S levels viz. 0 (S0), 1.2 (S1) and 2.5 (S2) mM, to study the effect of Fe and S nutrition on root system architecture, PS release and Fe-PS transporter in wheat.The results showed that both bread and durum wheat genotypes had a significant increase in root length, root surface area, and number of root tips under single or combined nutrient deficiency conditions as compared to sufficient condition. Comparative analysis of bread and durum wheat genotypes revealed increased PS biosynthesis and release, as well as increased Fe uptake in the form of the Fe-PS complex via the YS1 transporter with increasing doses of S, particularly under Fe deficient conditions in bread wheat, whereas in durum wheat, more S was used in other metabolic pathways rather than the PS biosynthesis pathway. Furthermore, correlation analysis demonstrates that Fe and S content are significantly correlated with root characteristics, PS biosynthesis and release and expression of YS1 (Fe-PS uptake) transporter.</p>

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Iron and Sulphur Cross Talk Regulates the Root System Architecture, Phytosiderophores Biosynthesis and Release and Expression of Fe-PS Transporter in Wheat

  • 期刊论文

  • 发表日期：

    2026年3月18日

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  • Vasundhara Sharma,
  • Pradeep Kumar Jain,
  • Prince Choyal,
  • Pandurang Raghunath Divte,
  • Vandna,
  • Rakesh Kumar Prajapat,
  • Bhupinder Singh

摘要

Iron (Fe) and sulphur (S) deficiency in soil are becoming serious concerns to the global wheat production system. The interaction between these two nutrients is critical for their availability, absorption, and transport in wheat. The alteration of root system architecture (RSA) and phytosiderophores (PS) release during nutrient deficiency may play a significant role in regulating the interactive metabolism of Fe and S in wheat. For this, bread and durum wheat plants were raised on Fe deficient (1 µM) and Fe sufficient nutrient solution (100 µM) under different S levels viz. 0 (S0), 1.2 (S1) and 2.5 (S2) mM, to study the effect of Fe and S nutrition on root system architecture, PS release and Fe-PS transporter in wheat.The results showed that both bread and durum wheat genotypes had a significant increase in root length, root surface area, and number of root tips under single or combined nutrient deficiency conditions as compared to sufficient condition. Comparative analysis of bread and durum wheat genotypes revealed increased PS biosynthesis and release, as well as increased Fe uptake in the form of the Fe-PS complex via the YS1 transporter with increasing doses of S, particularly under Fe deficient conditions in bread wheat, whereas in durum wheat, more S was used in other metabolic pathways rather than the PS biosynthesis pathway. Furthermore, correlation analysis demonstrates that Fe and S content are significantly correlated with root characteristics, PS biosynthesis and release and expression of YS1 (Fe-PS uptake) transporter.