Scholarlink

<p>Biofortification of crops with beneficial micronutrients like selenium (Se) and iodine (I) is a promising strategy to enhance nutritional quality while addressing global dietary deficiencies. This study investigates the synergistic effects of foliar selenium and iodine application on basil, focusing on its nutritional composition and essential oil profile. A commercial greenhouse experiment was conducted using a factorial randomized complete block design with three replications. The experiment involved sixteen treatments including different combinations of selenium (as Na₂SeO₄) at 0, 0.5, 1.5, and 3&#xa0;mg L<sup>−1</sup> and iodine (as KI) at 0, 0.1, 0.2, and 0.4&#xa0;µM. The combined biofortification, particularly the Se<sub>3</sub>-I<sub>0.4</sub> treatment (3&#xa0;mg L<sup>−1</sup> Se + 0.4&#xa0;µM I), was identified as the most effective. This optimal combination led to a 91% increase in leaf iodine content (332 vs. 174&#xa0;µg kg<sup>−1</sup>.dw<sup>−1</sup> in control) and increased the leaf selenium content to 17.72&#xa0;µg kg⁻<sup>1</sup>, up from 12.70&#xa0;µg kg⁻<sup>1</sup> in the control. We observed significant increases in chlorophyll a (∼40%), chlorophyll b (∼43%), carotenoids (∼195%), and the activity of antioxidant enzymes superoxide dismutase and ascorbate peroxidase compared to the control. The treatment also altered the essential oil profile, increasing the concentration of the desirable aroma compound linalool by ∼58% while decreasing 1,8-cineole and eugenol. In conclusion, the combined foliar application, especially at the Se<sub>3</sub>-I<sub>0.4</sub> level, effectively enhanced the nutritional and antioxidant quality of basil, presenting a promising strategy for micronutrient biofortification.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effects of iodine and selenium biofortification on Ocimum basilicum L. nutritional quality

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年12月8日

查看全文
  • Rahman Farzadifar,
  • Mehdi Hosseinifarahi,
  • Bijan Kavoosi,
  • Mohsen Radi,
  • Moslem Abdipour,
  • Sedigheh Mohammadi

摘要

Biofortification of crops with beneficial micronutrients like selenium (Se) and iodine (I) is a promising strategy to enhance nutritional quality while addressing global dietary deficiencies. This study investigates the synergistic effects of foliar selenium and iodine application on basil, focusing on its nutritional composition and essential oil profile. A commercial greenhouse experiment was conducted using a factorial randomized complete block design with three replications. The experiment involved sixteen treatments including different combinations of selenium (as Na₂SeO₄) at 0, 0.5, 1.5, and 3 mg L−1 and iodine (as KI) at 0, 0.1, 0.2, and 0.4 µM. The combined biofortification, particularly the Se3-I0.4 treatment (3 mg L−1 Se + 0.4 µM I), was identified as the most effective. This optimal combination led to a 91% increase in leaf iodine content (332 vs. 174 µg kg−1.dw−1 in control) and increased the leaf selenium content to 17.72 µg kg⁻1, up from 12.70 µg kg⁻1 in the control. We observed significant increases in chlorophyll a (∼40%), chlorophyll b (∼43%), carotenoids (∼195%), and the activity of antioxidant enzymes superoxide dismutase and ascorbate peroxidase compared to the control. The treatment also altered the essential oil profile, increasing the concentration of the desirable aroma compound linalool by ∼58% while decreasing 1,8-cineole and eugenol. In conclusion, the combined foliar application, especially at the Se3-I0.4 level, effectively enhanced the nutritional and antioxidant quality of basil, presenting a promising strategy for micronutrient biofortification.