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    Genetic basis and breeding perspectives of grain iron and zinc enrichment in cereals

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    U18ArtGarciaoliveiraGeneticInthomDev.pdf (1.024Mb)
    Date
    2018-07-02
    Author
    García Oliveira, A.L.
    Chander, S.
    Ortiz, R.
    Menkir, A.
    Gedil, M.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Micronutrient deficiency, also known as “hidden hunger,” is an increasingly serious global challenge to humankind. Among the mineral elements, Fe (Iron) and Zn (Zinc) have earned recognition as micronutrients of outstanding and diverse biological relevance, as well as of clinical importance to global public health. The inherently low Fe and Zn content and poor bioavailability in cereal grains seems to be at the root of these mineral nutrient deficiencies, especially in the developing world where cereal-based diets are the most important sources of calories. The emerging physiological and molecular understanding of the uptake of Fe and Zn and their translocation in cereal grains regrettably also indicates accumulation of other toxic metals, with chemically similar properties, together with these mineral elements. This review article emphasizes breeding to develop bioavailable Fe- and Zn-efficient cereal cultivars to overcome malnutrition while minimizing the risks of toxic metals. We attempt to critically examine the genetic diversity regarding these nutritionally important traits as well as the progress in terms of quantitative genetics. We sought to integrate findings from the rhizosphere with Fe and Zn accumulation in grain, and to discuss the promoters as well as the anti-nutritional factors affecting Fe and Zn bioavailability in humans while restricting the content of toxic metals.
    https://dx.doi.org/10.3389/fpls.2018.00937
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4326
    Non-IITA Authors ORCID
    Garcia-Oliveira ALhttps://orcid.org/0000-0001-8561-4172
    Abebe Menkirhttps://orcid.org/0000-0002-5907-9177
    Melaku Gedilhttps://orcid.org/0000-0002-6258-6014
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.3389/fpls.2018.00937
    Research Themes
    BIOTECH & PLANT BREEDING
    IITA Subjects
    Biofortification; Maize; Plant Breeding
    Agrovoc Terms
    Cereals; Iron; Zinc; Micronutrient; Biofortification; Toxicity
    Journals
    Frontiers in Plant Science
    Collections
    • Journal and Journal Articles4835
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