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Potential of microbes in the biofortification of Zn and Fe in dietary food grains: A review

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Title Potential of microbes in the biofortification of Zn and Fe in dietary food grains: A review
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Creator Devendra Singh
Radha Prasanna
 
Subject Micronutrients
Deficiency
Hidden hunger
Biofortification
Microorganisms
Rhizosphere
Zn/Fe transporter
 
Description Not Available
Micronutrients are essential factors for human health and integral for plant growth and development. Among the micronutrients,
zinc (Zn) and iron (Fe) deficiency in dietary food are associated with malnutrition symptoms (hidden hunger), which can be
overcome through biofortification. Different strategies, such as traditional and molecular plant breeding or application of chemical
supplements along with fertilizers, have been employed to develop biofortified crop varieties with enhanced bioavailability
of micronutrients. The use of microorganisms to help the crop plant in more efficient and effective uptake and translocation of Zn
and Fe is a promising option that needs to be effectively integrated into agronomic or breeding approaches. However, this is less
documented and forms the subject of our review. The major findings related to the mobilization of micronutrients by microorganisms
highlighted the significance of (1) acidification of rhizospheric soil and (2) stimulation of secretion of phenolics. Plant–
microbe interaction studies illustrated novel inferences related to the (3) modifications in the root morphology and architecture,
(4) reduction of phytic acid in food grains, and (5) upregulation of Zn/Fe transporters. For the biofortification of Zn and Fe,
formulation(s) of such microbes (bacteria or fungi) can be explored as seed priming or soil dressing options. Using the modern
tools of transcriptomics, metaproteomics, and genomics, the genes/proteins involved in their translocation within the plants of
major crops can be identified and engineered for improving the efficacy of plant–microbe interactions. With micronutrient
nutrition being of global concern, it is imperative that the synergies of scientists, policy makers, and educationists focus toward
developing multipronged approaches that are environmentally sustainable, and integrating such microbial options into the
mainframe of integrated farming practices in agriculture. This can lead to better quality and yields of produce, and innovative
approaches in food processing can deliver cost-effective nutritious food for the undernourished populations
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Date 2022-03-27T06:50:54Z
2022-03-27T06:50:54Z
2020-04-20
 
Type Review Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/70719
 
Language English
 
Relation Not Available;
 
Publisher Not Available