Community Structure of Arbuscular Mycorrhizal Fungi in Rhizospheric Soil of a Transgenic High-Methionine Soybean and a Near Isogenic VarietyReportar como inadecuado




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The use of transgenic plants in agriculture provides many economic benefits, but it also raises concerns over the potential impact of transgenic plants on the environment. We here examined the impact of transgenic high-methionine soybean ZD91 on the arbuscular mycorrhizal AM fungal community structure in rhizosphere soil. Our investigations based on clone libraries were conducted in field trials at four growth stages of the crops each year from 2012 to 2013. A total of 155 operational taxonomic units OTUs of AM fungi were identified based on the sequences of small subunit ribosomal RNA SSU rRNA genes. There were no significant differences found in AM fungal diversity in rhizosphere soil during the same growth stage between transgenic soybean ZD91 and its non-transgenic parental soybean ZD. In addition, plant growth stage and year had the strongest effect on the AM fungal community structure while the genetically modified GM trait studied was the least explanatory factor. In conclusion, we found no indication that transgenic soybean ZD91 cultivation poses a risk for AM fungal communities in agricultural soils.



Autor: Jingang Liang, Fang Meng, Shi Sun, Cunxiang Wu, Haiying Wu, Mingrong Zhang, Haifeng Zhang, Xiaobo Zheng, Xinyuan Song , Zhengguan

Fuente: http://plos.srce.hr/



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