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

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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.

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Acknowledgments

This research was supported by grants from the KRIBB Research Initiative Program, the National Research Foundation of Korea (NRF) funded by MEST (No. 20110028162), and the Next-Generation BioGreen 21 Program (No. PJ008008012011), Rural Development Administration, Republic of Korea.

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  1. Environmental Appraisal Center, Korea Environment Institute, Seoul, 122-706, Republic of Korea

    Young Jin Chun

  2. Bio-Evaluation Center, KRIBB, Cheongwon, 363-883, Republic of Korea

    Hyo-Jeong Kim, Kee Woong Park, Soon-Chun Jeong & Chang-Gi Kim

  3. National Academy of Agricultural Science, Rural Development Administration, Suwon, 441-707, Republic of Korea

    Bumkyu Lee

  4. Division of Applied Bioscience and Biotechnology, Chonnam National University, Gwangju, 500-757, Republic of Korea

    Kyoungwhan Back

  5. Department of Pharmacy, Gachon University of Medicine and Science, Incheon, 406-799, Republic of Korea

    Hwan Mook Kim

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  1. Young Jin Chun
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Chun, Y.J., Kim, HJ., Park, K.W. et al. Two-year field study shows little evidence that PPO-transgenic rice affects the structure of soil microbial communities. Biol Fertil Soils 48, 453–461 (2012). https://doi.org/10.1007/s00374-011-0626-5

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