文献类型： 外文期刊
作者： Hu, H. 1 ; Xie, M. 2 ; Yu, Y. 3 ; Zhang, Q. 4 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Key Lab Microbial Resources, Beijing 100193, Peoples R China
2.AnHui Acad Agr Sci, Inst Plant Protect, Hefei, Anhui, Peoples R China
3.China Natl Environm Monitoring Ctr, Beijing 100012, Peoples R China
4.China Agr Univ, Coll Agron & Biotechnol, Beijing 100094, Peoples R China
关键词： risk assessment;Bacillus thuringiensis (Bt) toxin;culturable microorganisms;microorganism population;residue decomposition
期刊名称：PLANT SOIL AND ENVIRONMENT （ 影响因子：1.799； 五年影响因子：2.169 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： The impact of transgenic Bacillus thuringiensis (Bt) cotton residues on soil microorganism communities was investigated. Leaves of three different varieties of transgenic Bt cotton and their near-isogenic lines were placed in soil and the numbers of indigenous soil microorganisms were measured with cultivation-dependent approaches under laboratory conditions. The soil samples were collected after 7, 14, 21, 28, 56 and 84 days of incubation. Numbers of bacteria, actinomycetes and fungi in the soil were measured by counting colony forming units after incubation on appropriate medium. Overall, although there were differences in bacteria, actinomycetes and fungi population between soil amended with Bt and non-Bt cotton throughout the whole incubation in three experiments, these differences were transient and not persistent from one sampling stage to the next. These results suggest that Bt-transgenic cotton tissues have no apparent impact on soil microorganism population.
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