Effects of repeated cultivation of transgenic Bt cotton on functional bacterial populations in rhizosphere soil

文献类型： 外文期刊

第一作者： Hu, Hai-Yan

作者： Hu, Hai-Yan;Liu, Xiao-Xia;Zhao, Zhang-Wu;Zhang, Qing-Wen;Hu, Hai-Yan;Sun, Jian-Guang;Liu, Xing-Zhong;Yu, Yong

作者机构：

期刊名称：WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY （ 影响因子：3.312； 五年影响因子：3.58 ）

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收录情况： SCI

摘要： The impact of multiple-year (0-5 years) cultivation of transgenic Bacillus thuringiensis (Bt) cotton on the functional bacterial populations in rhizosphere soil was investigated. The transgenic Bt + CpTI cotton line SGK321 and a non-Bt cotton line Shiyuan321 were planted in four fields in which Bt cotton had been continuously cultivated for 0, 1, 3, and 5 years. Rhizosphere soil samples were collected at the seedling, squaring, flower and boll, and boll-opening stages of cotton. Numbers of bacteria involved in nitrogen-fixing, organic phosphate-dissolving, inorganic phosphate-dissolving, and potassium-dissolving were measured with cultivation-dependent approaches. The data presented here showed no consistent statistically significant differences in the numbers of different groups of functional bacteria between rhizosphere soil of Bt and non-Bt cotton in the same field, and no obvious trends in the numbers of the various group of functional bacteria with the increasing duration of Bt cotton cultivation. These studies suggest that multiple-year cultivation of transgenic Bt cotton may not affect the functional bacterial populations in rhizosphere soil.

分类号： Q93

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