J Integr Plant Biol. ›› 2018, Vol. 60 ›› Issue (2): 85-88.DOI: 10.1111/jipb.12519

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Ectopic expression of fungal EcGDH improves nitrogen assimilation and grain yield in rice

Dongying Tang1,2†, Yuchong Peng2†, Jianzhong Lin2†, Changqing Du2, Yuanzhu Yang3, Dan Wang2, Cong Liu2, Lu Yan2, Xiaoying Zhao2, Xia Li1, Liangbi Chen1* and Xuanming Liu2*   

  1. 1College of Life Sciences, Hunan Normal University, Changsha, China
    2Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, China
    3Academy of Seed Industry of Hunan Yahua, Changsha, China
  • Received:2016-12-28 Accepted:2017-01-05 Published:2018-02-13
  • About author:These authors contributed equally to this work.
    **Correspondences: E-mail: Liangbi Chen (chenliangbi@126.com), Xuanming Liu (xmL05@hnu.edu.cn)


NADP(H)-dependent glutamate dehydrogenases (GDH) in lower organisms have stronger ammonium affinity than those in higher plants. Here we report that transgenic rice overexpressing the EcGDH from Eurotium cheralieri exhibited significantly enhanced aminating activities. Hydroponic and field tests showed that nitrogen assimilation efficiency and grain yields were markedly increased in these transgenic plants, especially at the low nitrogen conditions. These results suggest that EcGDH may have potential to be used to improve nitrogen assimilation and grain yield in rice.

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