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Rice biofortification with zinc and selenium: a transcriptomic approach to understand mineral accumulation in flag leaves
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Orientador(es)
Resumo(s)
Human malnutrition due to micronutrient deficiencies, particularly with regards to Zinc
(Zn) and Selenium (Se), affects millions of people around the world, and the enrichment
of staple foods through biofortification has been successfully used to fight hidden
hunger. Rice (Oryza sativa L.) is one of the staple foods most consumed in countries
with high levels of malnutrition. However, it is poor in micronutrients, which are often
removed during grain processing. In this study, we have analyzed the transcriptome of
rice flag leaves biofortified with Zn (900 g ha1), Se (500 g ha1), and Zn-Se. Flag
leaves play an important role in plant photosynthesis and provide sources of metal
remobilization for developing grains. A total of 3170 differentially expressed genes
(DEGs) were identified. The expression patterns and gene ontology of DEGs varied
among the three sets of biofortified plants and were limited to specific metabolic
pathways related to micronutrient mobilization and to the specific functions of Zn (i.e., its
enzymatic co-factor/coenzyme function in the biosynthesis of nitrogenous compounds,
carboxylic acids, organic acids, and amino acids) and Se (vitamin biosynthesis and ion
homeostasis). The success of this approach should be followed in future studies to
understand how landraces and other cultivars respond to biofortification
Descrição
Original Research
Palavras-chave
biofortification flag leaves rice RNASeq selenium transcriptomics zinc
Contexto Educativo
Citação
Roda FA, Marques I, Batista-Santos P, Esquível MG, Ndayiragije A, Lidon FC, Swamy BPM, Ramalho JC and Ribeiro-Barros AI (2020) Rice Biofortification With Zinc and Selenium: A Transcriptomic Approach to Understand Mineral Accumulation in Flag Leaves. Front. Genet. 11:543
Editora
L.Joseph Su, University of Arkansas for Medical Sciences, USA