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Photosynthetic characteristics and effect of ATP in transgenic rice with phosphoenolpyruvate carboxylase and pyruvate orthophosphate dikinase genes

文献类型: 外文期刊

作者: Zhang, B. J. 1 ; Ling, L. L. 3 ; Wang, R. F. 1 ; Jiao, D. M. 4 ;

作者机构: 1.Anhui Agr Univ, Hefei 230036, Peoples R China

2.Nanjing Xiaozhuang Univ, Nanjing 21171, Peoples R China

3.Southwest Univ, Chongqing 400712, Peoples R China

4.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China

关键词: active oxygen;ATP;enzymes of C(4) photosynthetic pathway;irradiance;net photosynthetic rate;Oryza;temperature

期刊名称:PHOTOSYNTHETICA ( 影响因子:3.189; 五年影响因子:3.38 )

ISSN: 0300-3604

年卷期: 2009 年 47 卷 1 期

页码:

收录情况: SCI

摘要: In the untransformed rice (WT) and transgenic rice with the PEPC and PPDK genes (CK) we determined activities of C(4) photosynthetic enzymes, photosynthetic response to irradiance and temperature, the metabolic index of active oxygen, and the yield component factors. The activities of C(4) photosynthetic enzymes in WT were very low, while those of corresponding enzymes in CK were highly observable. Moreover, after adenosine triphosphate (ATP) treatment, and under high irradiance and high temperature, the net photosynthetic rate of CK increased by 17 and 12 %, respectively, as compared to that achieved without ATP treatment. The resistance of CK against photo-oxidation was enhanced under these conditions, and CK yield increased by 15 %. ATP treatment enhanced the photosynthetic productivity of CK, thereby proving that ATP is the key factor in enhancing the photosynthetic capacity of transgenic rice with C(4) gene. Our new technical approach can be used in breeding rice with high photosynthetic efficiency and high grain yield.

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