kitaake-em class="a-plus-plus">) was transformed with SsGDH in a binary vector construct by Agrobacterium-mediated transformation. Transgenic rice plants showed that transcripts and proteins of SsGDH accumulated at higher levels and GDH enzymatic activity was obviously higher in transgenic rice plants compared with the non-transformant rice plants (CK), though phenotype including plant height, fresh weight and dry weight became slightly weaker compared with CK under 50, 500 and 5,000?μM nitrogen gradient nutrient solution treatment (NH4NO3 as a nitrogen source) after introducing SsGDH into rice. For enzymatic activity assay in vitro, recombinant His6-SsGDH protein was expressed in Escherichia coli BL21 (DE3) and purified by Ni-NTA agarose. Results suggested that recombinant His6-SsGDH protein had GDH activity using ammonium, α-OG, and l-glutamate separately as a substrate at two different concentrations, especially the affinity for ammonium was very high, and its Km value was only 0.28?±?0.03?mM, indicating that SsGDH can assimilate more ammonium into rice. According to previous reports, transgenic plants expressing fungal or bacteria GDHs might show improved herbicide resistance. Basta resistance test showed that SsGDH expression in rice can significantly enhanced their tolerance to Basta than CK. In conclusion, our results may provide some clues for further investigation on nitrogen utilization via introducing exogenous GDHs from lower organisms into rice." />
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Molecular cloning, characterization and function analysis of a GDH gene from Sclerotinia sclerotiorum in rice
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  • 作者:Changqing Du (1)
    Jianzhong Lin (1)
    Yuanzhu Yang (2)
    Hong Liu (3)
    Chiyu Li (1)
    Yanbiao Zhou (1)
    Yixing Li (1)
    Dongying Tang (1)
    Xiaoying Zhao (1)
    Yonghua Zhu (1)
    Xuanming Liu (1)
  • 关键词:Rice ; Glutamate dehydrogenase (GDH) ; Sclerotinia sclerotiorum ; Recombinant protein ; Nitrogen metabolism
  • 刊名:Molecular Biology Reports
  • 出版年:2014
  • 出版时间:June 2014
  • 年:2014
  • 卷:41
  • 期:6
  • 页码:3683-3693
  • 全文大小:
  • 参考文献:1. Hirel B, Le Gouis J, Ney B, Gallais A (2007) The challenge of improving nitrogen use efficiency in crop plants: towards a more central role for genetic variability and quantitative genetics within integrated approaches. J Exp Bot 58:2369-387 CrossRef
    2. Raun WR, Johnson GV (1999) Improving nitrogen use efficiency for cereal production. Agron J 91:357-63 CrossRef
    3. Lea PJ, MiXin BJ (1974) Alternative route for nitrogen assimilation in higher plants. Nature 18:614-16 CrossRef
    4. Wootton JC (1983) Re-assessment of ammonium-ion affinities of NADP-specific glutamate dehydrogenases. Activation of the / Neurospora crassa enzyme by ammonium and rubidium ions. Biochem J 209(2):527-31
    5. Melo-Oliveira R, Oliveira IC, Coruzzi GM (1996) / Arabidopsis mutant analysis and gene regulation define a non-redundant role for glutamate dehydrogenase in nitrogen assimilation. Proc Natl Acad Sci USA 93:4718-723 CrossRef
    6. Purnell MP, Skopelitis DS, Roubelakis-Angelakis KA, Botella JR (2005) Modulation of higher-plant NAD(H)-dependent glutamate dehydrogenase activity in transgenic tobacco via alteration of beta subunit levels. Planta 222:167-80 CrossRef
    7. Yamaya T, Oaks A, Matsumoto H (1984) Characteristics of glutamate dehydrogenase in mitochondria prepared from corn shoots. Plant Physiol 76:1009-013 CrossRef
    8. Lea PJ, Thurman DA (1972) Intracellular location and properties of plant L-glutamate dehydrogenases. J Exp Bot 23:440-49 CrossRef
    9. Ameziane R, Bernhard K, Lightfoot D (2000) Expression of the bacterial / gdhA gene encoding a NADPH glutamate dehydrogenase in tobacco affects plant growth and development. Plant Soil 221:47-7 CrossRef
    10. Kisaka H, Kida T (2003) Transgenic tomato plant carrying a gene for NADP-dependent glutamate dehydrogenase (gdhA) from / Aspergillus nidulans. Plant Sci 164:35-2 CrossRef
    11. Abawi GS, Grogan RG (1979) Epidemiology of diseases caused by Sclerotinia species. Phytopathology 69:899-04 CrossRef
    12. Adams PB, Ayers WA (1979) Ecology of Sclerotinia species. Phytopathology 69:896-99 CrossRef
    13. Huang HC (1985) Factors affecting myceliogenic germination of sclerotia of / Sclerotinia sclerotiorum. Phytopathology 75:433-37 CrossRef
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    15. Mae T, Ohira K (1981) the remobilization of nitrogen related to leaf growth and senescence in rice plants ( / Oryza sativa L.). Plant Cell Physiol 22:1067-074
    16. Thompson JD, Gibson TJ, Plewniak F, Jeanmougin F, Higgins DG (1994) the ClustalX windows interface: flexible strategies for multiple sequence alignment aided by quality analysis tools. Nucleic Acids Res 25:4876-882 CrossRef
    17. Schwede T, Kopp J, Guex N, Peitsch MC (2003) SWISSMODEL: an automated protein homology-modeling server. Nucleic Acids Res 31:3381-385 CrossRef
    18. Cao X, Zong Z, Xiuyun J, Sun Y, Dai C, Liu Q, Jiang J (2010) Molecular cloning, characterization and function analysis of the gene encoding HMG-CoA reductase from / Euphorbia Pekinensis Rupr. Mol Biol Rep 37:1559-567 CrossRef
    19. Haruhiko Washida Okita Lab. IBC, WSU Agrobacterium-Mediated Transformation for Rice May 2007
    20. Rogers SO, Bendich AJ (1988) Extraction of DNA from plant tissues. In: Gelvin SB, Schilperoort RA (eds) Plant molecular biology manual, pp A6: l-10. Kluwer Academic Publishers, Boston, MA
    21. Loulakakis KA, Roubelakis-Angelakis KA (1991) Plant NAD (H)-glutamate dehydrogenase consists of two subunit polypeptides and their participation in the seven isoenzymes occurs in an ordered ratio. Plant Physiol 97:104-11 CrossRef
    22. Bradford MM (1976) A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein binding. Anal Biochem 72:248-54 CrossRef
    23. Noor S, Punekar NS (2005) Allosteric NADP-glutamate dehydrogenase from aspergilli: purification, characterization and implications for metabolic regulation at the carbon–nitrogen interface. Microbiology 151:1409-419 CrossRef
    24. Ouyang S-Q, Liu Y-F, Liu P, Lei G, He S-J, Ma B, Zhang W-K, Zhang J-S, Chen S-Y (2010) Receptor-like kinase OsSIK1 improves drought and salt stress tolerance in rice ( / Oryza sativa) plants. The Plant Journal 62:316-29 CrossRef
    25. Ishiyama K, Inoue E, Watanabe-Takahashi A, Obara M, Yamaya T, Takahashi H (2004) Kinetic properties and ammonium-dependent regulation of cytosolic isoenzymes of glutamine synthetase in / Arabidopsis. J Biol Chem 16(279):16598-6605 CrossRef
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  • 作者单位:Changqing Du (1)
    Jianzhong Lin (1)
    Yuanzhu Yang (2)
    Hong Liu (3)
    Chiyu Li (1)
    Yanbiao Zhou (1)
    Yixing Li (1)
    Dongying Tang (1)
    Xiaoying Zhao (1)
    Yonghua Zhu (1)
    Xuanming Liu (1)

    1. State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, 410082, Hunan, China
    2. Academy of Seed Industry of Hunan Yahua, Changsha, 410001, Hunan, China
    3. College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
  • ISSN:1573-4978
文摘
The full-length cDNA encoding a glutamate dehydrogenase (GDH) which catalyzes the reaction of reductive amination of α-oxoglutarate (α-OG) to glutamate (the anabolic activity) and the reverse reaction of oxidative deamination of glutamate (the catabolic activity) was isolated from Sclerotinia sclerotiorum, we designated it as SsGDH. Bioinformatics analysis revealed that SsGDH had a typical GDH spatial structure and extensive homology with other fungal or bacteria GDHs. To evaluate its function in rice, rice (Oryza sativa L. cv. -em class="a-plus-plus">kitaake-em class="a-plus-plus">) was transformed with SsGDH in a binary vector construct by Agrobacterium-mediated transformation. Transgenic rice plants showed that transcripts and proteins of SsGDH accumulated at higher levels and GDH enzymatic activity was obviously higher in transgenic rice plants compared with the non-transformant rice plants (CK), though phenotype including plant height, fresh weight and dry weight became slightly weaker compared with CK under 50, 500 and 5,000?μM nitrogen gradient nutrient solution treatment (NH4NO3 as a nitrogen source) after introducing SsGDH into rice. For enzymatic activity assay in vitro, recombinant His6-SsGDH protein was expressed in Escherichia coli BL21 (DE3) and purified by Ni-NTA agarose. Results suggested that recombinant His6-SsGDH protein had GDH activity using ammonium, α-OG, and l-glutamate separately as a substrate at two different concentrations, especially the affinity for ammonium was very high, and its Km value was only 0.28?±?0.03?mM, indicating that SsGDH can assimilate more ammonium into rice. According to previous reports, transgenic plants expressing fungal or bacteria GDHs might show improved herbicide resistance. Basta resistance test showed that SsGDH expression in rice can significantly enhanced their tolerance to Basta than CK. In conclusion, our results may provide some clues for further investigation on nitrogen utilization via introducing exogenous GDHs from lower organisms into rice.

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