Two-year field study shows little evidence that PPO-transgenic rice affects the structure of soil microbial communities

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Title
Two-year field study shows little evidence that PPO-transgenic rice affects the structure of soil microbial communities
Author(s)
Young Jin Chun; Hyo-Jeong Kim; K W Park; Soon Chun Jeong; B Lee; K Baek; H M Kim; Chang-Gi Kim
Bibliographic Citation
Biology and Fertility of Soils, vol. 48, no. 4, pp. 453-461
Publication Year
2012
Abstract
There is global concern about the environmental consequences associated with transgenic crops. Their effects on the soil ecosystem are of special interest when assessing ecological safety and integrity. Although many efforts have been made to develop crops genetically modified to have resistance to protoporphyrin oxidase (PPO)-inhibiting herbicides, little is known about their influence on soil microbial communities. We conducted a 2-year field study and an analysis via terminal restriction fragment length polymorphism (T-RFLP) to assess the impacts of PPO-transgenic rice on bacterial and fungal communities. In the first year we sampled the rhizosphere and surrounding bulk soil, while in the second year we sampled rhizosphere soil only. No differences were observed in the diversity indices and community composition of microbial communities between transgenic rice and its parental non-transgenic counterpart (cultivar Dongjin). Instead, community variation was strongly dependent on growth stage and year. Therefore, we observed no adverse effects by these crops of modified rice on the microbial community composition in paddy soils.
Keyword
Protoporphyrin oxidaseRiceSoil microbial communityT-RFLPTransgenic crop
ISSN
0178-2762
Publisher
Springer
DOI
http://dx.doi.org/10.1007/s00374-011-0626-5
Type
Article
Appears in Collections:
Ochang Branch Institute > 1. Journal Articles
Ochang Branch Institute > Division of Bioinfrastructure > Bio-Evaluation Center > 1. Journal Articles
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