Micronutrient Biofortification: A Dual Strategy for Provoking Plant Primary and Secondary Metabolism and Food Security

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Nutrition".

Deadline for manuscript submissions: 31 October 2024 | Viewed by 1051

Special Issue Editors


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Guest Editor
Institute of Plant Nutrition and Soil Science, Kiel University, Hermann-Rodewald-Str. 2, 24118 Kiel, Germany
Interests: Plant Nutrition, Soil Fertility, Plant Food Quality, Environmental Stress Physiology
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Institute of Plant Nutrition and Soil Science, Kiel University, Hermann-Rodewald-Str. 2, 24118 Kiel, Germany
Interests: plant nutrition; secondary metabolites; bioactivity; human health; plant food quality; mass spectrometry; NMR; biofortification; abiotic stress
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Biofortification of essential micronutrients such as zinc, iron, and iodine is a sustainable, effective, and low-cost strategy for addressing nutrient deficiencies in humans. Hidden hunger is a form of malnutrition that is often not easily visible. Besides playing a role in plant growth and development, micronutrients have multiple functions, including enhancing plant stress tolerance. For instance, zinc and iron exhibit a remarkable impact in diminishing heavy metal toxicity (e.g., Cd) in addition to mitigating salinity and drought stress. Furthermore, hence micronutrients are involved in many biochemical and physiological processes; they might influence plant primary and secondary metabolism. Selenium the beneficial trace element for plants, is recognized as an essential nutrient for humans and animals. Since the 1980s, selenium biofortification has been implemented in areas with selenium-deficient soil to enrich food crops and enhance human health status. As an analogue of sulfur, selenium shares the same sulfur assimilatory pathway. Consequently, it can improve protein quality and secondary metabolism.

In this Special Issue, we invite researchers with distinguished expertise in this area to contribute original research articles, short communications, and critical reviews. This will provide an extensive current level of knowledge on the advancements in the primary and secondary metabolism associated with micronutrient enrichment, including the role of micronutrient biofortification in (i) determining the crop’s nutritional and quality attributes and indices, (ii) improving and developing stress tolerance against various biotic and abiotic stress factors, (iii) inducing metabolic reprogramming by affecting secondary metabolite productions, (v) strengthening the medicinal significance and therapeutic properties of food crops, and (iv) assessing environmental sustainability and food security.

Prof. Dr. Karl H. Mühling
Dr. Muna Ali Abdalla
Guest Editors

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Keywords

  • hidden hunger
  • crop quality attributes and indices
  • protein quality
  • phytoremediation
  • micronutrients homeostasis in plants and their crosstalk with other elements
  • selenium and sulfur crosstalk
  • antagonistic and synergistic interplay
  • agronomic biofortification
  • transgenic approach
  • seed priming
  • primary metabolites
  • secondary metabolites
  • phytochemical constituents
  • vitamins
  • carotenoids
  • polyphenolic compounds
  • terpenoids
  • essential oil
  • antinutritional substances
  • enhancement of crop stress defense mechanism

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Published Papers (1 paper)

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Research

15 pages, 585 KiB  
Article
Soil and Foliar Zinc Biofortification of Triticale (x Triticosecale) under Mediterranean Conditions: Effects on Forage Yield and Quality
by Carlos García-Latorre, María Dolores Reynolds-Marzal, Saúl De la Peña-Lastra, Nuno Pinheiro and María José Poblaciones
Plants 2024, 13(14), 1917; https://doi.org/10.3390/plants13141917 - 11 Jul 2024
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Abstract
Zinc (Zn) deficiency represents a significant global concern, affecting both plant and human health, particularly in regions with Zn-depleted soils. Agronomic biofortification strategies, such as the application of Zn fertilizers, offer a cost-effective approach to increase Zn levels in crops. This study aimed [...] Read more.
Zinc (Zn) deficiency represents a significant global concern, affecting both plant and human health, particularly in regions with Zn-depleted soils. Agronomic biofortification strategies, such as the application of Zn fertilizers, offer a cost-effective approach to increase Zn levels in crops. This study aimed to assess the efficacy of soil and foliar Zn biofortification, applied as an aqueous solution of 0.5% zinc sulphate (ZnSO4·7H2O), on triticale (x Triticosecale) grown under Mediterranean conditions. The study was conducted over two growing seasons (2017/18 and 2018/19) in southern Spain, evaluating the effects on biomass yield; forage quality, including crude protein, Van Soest detergent fiber, organic matter digestibility, and relative forage value; and nutrient accumulation. Soil treatment consisted in the application of 50 kg of ZnSO4·7H2O ha−1 solely at the beginning of the first campaign to assess the residual effect on the second year. In contrast, the foliar treatment consisted of two applications of 4 kg of ZnSO4·7H2O ha−1 per campaign, one at the beginning of tillering and the other at the appearance of the first node. The foliar application increased the Zn content of the forage to adequate levels, while the soil application resulted in a 33% increase in biomass production, which is particularly beneficial for farmers. Overall quality was favored by the combined soil + foliar application, and no adverse antagonistic effects on other nutrients were detected. Instead, a synergistic interaction between Se and Zn was observed, which improved the efficacy of this important micronutrient for livestock and human wellbeing. Full article
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