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Comparison between transgenic maize with exotic betaine aldehyde dehydrogenase (BADH) gene and its untransformed counterpart

文献类型： 外文期刊

作者： Yang, Liyan 1 ; Liu, Xiaolu 1 ; Guo, Xiaoyang 1 ; Sun, Yi 2 ; Hao, Yaoshan 2 ;

作者机构： 1.Shanxi Normal Univ, Linfen 041004, Peoples R China

2.Shanxi Acad Agr Sci, Biotechnol Res Ctr, Taiyuan 030031, Peoples R China

3.Minist Agr, Key Lab Crop Gene Resources & Germplasm Enhanceme, Taiyuan 030031, Peoples R China

关键词： BADH gene;maize;physiology;growth

期刊名称：MAYDICA （ 影响因子：0.542； 五年影响因子：0.605 ）

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收录情况： SCI

摘要： We investigated the performance of a transgenic maize (Zea mays L) line with an exotic betaine aldehyde dehydrogenase (BADH) gene and its untransformed counterpart under drought and normal water conditions. Membrane permeability, osmoprotectant contents, and antioxidant enzyme activities of the maize lines as well as plant height and biomass were compared. The results showed that, under drought stress, compared with the untransgenic line, the contents of glycine betaine (GB), soluble sugars, soluble proteins and proline of the transgenic line were significantly higher, so was the peroxidase (POD) activity; the contents of superoxide anion free radical, malondialdehyde (MDA) and the electrical conductivity of the transgenic line were lower; plant height and the biomass of the transgenic line were significantly higher. Under normal water conditions, the contents of soluble protein and MDA content of the transgenic line were significantly lower; but it was not the case for the content of superoxide anion free radical, electrical conductivity and superoxide dismutase (SOD) activity. No significant difference was observed in GB content and, the plant height and the biomass between the 2 lines. We conclude that the transgenic maize with exotic BADH gene was superior over its untransformed counterpart under drought stress and they performed similarly under normal water conditions.

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