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TaNRT2.1-6B is a dual-affinity nitrate transporter contributing to nitrogen uptake in bread wheat under both nitrogen deficiency and sufficiency

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  • معلومة اضافية
    • بيانات النشر:
      KeAi Communications Co., Ltd., 2022.
    • الموضوع:
      2022
    • Collection:
      LCC:Agriculture
      LCC:Agriculture (General)
    • نبذة مختصرة :
      Multiple nitrate transporter (NRT) genes exist in the genome of bread wheat, and it is of great importance to identify the elite NRT genes for N-efficient wheat cultivar breeding. A candidate gene association study (CGAS) of six N use efficiency (NUE) related traits (grain N concentration (GNC), straw N concentration (SNC), grain yield (GY), grain N accumulation (GNA), shoot total N accumulation (STN) and N harvest index (NHI)) was performed based on SNPs in 46 NRT2 genes using a panel composed of 286 wheat cultivars. CGAS identified TaNRT2.1-6B as an elite NRT gene that is significantly associated with four (NHI, SNC, GNA and GY) of the six NUE-related traits simultaneously. TaNRT2.1-6B is located on the plasma membrane and acts as a dual-affinity NRT. The overexpression of TaNRT2.1-6B increased the N influx and root growth of wheat, whereas gene silence lines resulted in the opposite effects. The overexpression of TaNRT2.1-6B also improved GY and N accumulation of wheat under either limited or sufficient N conditions. The data provide the TaNRT2.1-6B gene and the two associated SNP markers as promising powerful tools for breeding wheat cultivars with high N uptake ability and NUE.
    • File Description:
      electronic resource
    • ISSN:
      2214-5141
    • Relation:
      http://www.sciencedirect.com/science/article/pii/S2214514122000034; https://doaj.org/toc/2214-5141
    • الرقم المعرف:
      10.1016/j.cj.2021.11.012
    • الرقم المعرف:
      edsdoj.03139a39e1a49228dc82e103070bbfd