16S rDNA克隆文库法探索转基因香石竹对土壤细菌群落的影响

摘要

[目的]通过研究转基因香石竹对土壤细菌群落的影响,为转基因香石竹的环境安全性评价提供依据.[方法]通过构建16S rDNA克隆文库,分析种植转基因和非转基因香石竹的土壤中细菌的群落结构组成.[结果]转基因和非转基因香石竹土壤中,共有的菌群有变形菌门(Proteobacteria)、浮霉菌门(Planctomycetes)、酸杆菌门(Acidobacteria),其中α-变形菌门、β-变形菌门、浮霉菌门为优势菌群；而在放线菌门(Actinobacteria)、疣微菌门(Verrucomicrobia)及未培养菌(Uncultured bacterium clone)等菌群存在部分差异.[结论]通过16S rDNA克隆文库方法揭示了转基因香石竹的土壤中细菌多样性十分丰富,其栽培对土壤细菌群落结构影响有限.%[Objective] We did this research to analyze the impact on the soil bacterial population of the transgenic carnation, which laid the foundation for the safety assessment of GM carnation. [Methods] Bacterial 16S rDNA gene clone libraries of GM and non-GM carnations were constructed, and the soil bacterial populations of these carnations were compared. [Resultsl The results showed Alphaproteobacteria, Betaproteobacteria, Planctomycetes and Acidobacteria were shared with GM and non-GM carnation. Some differences were found in Actinobacteria, Verrucomicrobia and uncultured bacterium clone. [Conclusion] The results indicated that high bacterial diversity was found in these GM carnation soil bacterial libraries, and the cultivation of genetically modified carnation did not have a significant impact on the soil bacterial community structure.