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Genome-Wide Identification and Functional Analysis of Nitrate Transporter Genes ( NPF , NRT2 and NRT3 ) in Maize by Lihua Jia; Desheng Hu; Junbo Wang; Yuanyuan Liang; Fang Li; Yi Wang; Yanlai Han is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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Nitrate is the primary form of nitrogen uptake in plants, mainly transported by nitrate transporters (NRTs), including NPF (NITRATE TRANSPORTER 1/PEPTIDE TRANSPORTER FAMILY), NRT2 and NRT3. In this study, we identified a total of 78 __NPF__, seven __NRT2__, and two __NRT3__ genes in maize. Phylogenetic analysis divided the __NPF__ family into eight subgroups (__NPF1__-__NPF8__), consistent with the results in __Arabidopsis thaliana__ and rice. The __NRT2__ family appears to have evolved more conservatively than the __NPF__ family, as __NRT2__ genes contain fewer introns. The promoters of all __NRTs__ are rich in __cis__-acting elements responding to biotic and abiotic stresses. The expression of __NRTs__ varies in different tissues and developmental stages, with some __NRTs__ only expressed in specific tissues or developmental stages. RNA-seq analysis using Xu178 revealed differential expression of __NRTs__ in response to nitrogen starvation and nitrate resupply. Moreover, the expression patterns of six key __NRTs__ genes (__NPF6.6__, __NPF6.8__, __NRT2.1__, __NRT2.5__ and __NRT3.1A/B__) varied in response to alterations in nitrogen levels across distinct maize inbred lines with di

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Author

Lihua Jia; Desheng Hu; Junbo Wang; Yuanyuan Liang; Fang Li; Yi Wang; Yanlai Han

Publisher

MDPI AG

Published

2023

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)