Complex phylogeny and gene expression patterns of members of the NITRATE TRANSPORTER 1/PEPTIDE TRANSPORTER family (NPF) in wheat.
Complex phylogeny and gene expression patterns of members of the NITRATE TRANSPORTER 1/PEPTIDE TRANSPORTER family (NPF) in wheat.
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DOI：
10.1093/jxb/eru231
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发表时间：
2014-10
影响因子：
6.9
通讯作者：
Hawkesford MJ
中科院分区：
文献类型：
--
作者：
Buchner P;Hawkesford MJ
NPF（以前称为低亲和力NRT 1）和“高亲和力”NRT 2硝酸盐转运蛋白基因参与根的硝酸盐吸收，以及硝酸盐在植物体内的运输和分配。NPF基因家族在拟南芥中由53个成员组成，然而其中只有11个已经被功能性地表征。虽然同源基因已被确定在不同的植物物种，包括一些谷物的基因组中，有小麦（小麦）的信息很少。在小麦中发现了16个与拟南芥低亲和力硝酸盐转运蛋白NPF基因同源的基因，表明小麦NPF基因家族非常复杂。小麦NFP基因受植物氮素营养状况的调节表明，这些转运蛋白参与了与氮代谢有关的底物转运。与组织特异性、硝酸盐有效性和衰老相关的复杂表达模式可能与小麦依赖于库/源需求的复杂生长模式以及籽粒灌浆期间的再动员有关。
NPF (formerly referred to as low-affinity NRT1) and ‘high-affinity’ NRT2 nitrate transporter genes are involved in nitrate uptake by the root, and transport and distribution of nitrate within the plant. The NPF gene family consists of 53 members in Arabidopsis thaliana, however only 11 of these have been functionally characterized. Although homologous genes have been identified in genomes of different plant species including some cereals, there is little information available for wheat (Triticum aestivum). Sixteen genes were identified in wheat homologous to characterized Arabidopsis low-affinity nitrate transporter NPF genes, suggesting a complex wheat NPF gene family. The regulation of wheat NFP genes by plant N-status indicated involvement of these transporters in substrate transport in relation to N-metabolism. The complex expression pattern in relation to tissue specificity, nitrate availability and senescence may be associated with the complex growth patterns of wheat depending on sink/source demands, as well as remobilization during grain filling.
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影响因子：
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作者：
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DOI：
10.1073/pnas.1203567109
发表时间：
2012-06-12
影响因子：
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