한국미생물·생명공학회지 (Microbiology and Biotechnology Letters)

  • 제48권4호
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  • Pages.399-422
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  • 2020
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  • 1598-642X(pISSN)
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  • 2234-7305(eISSN)
한국미생물·생명공학회 (The Korean Society for Microbiology and Biotechnology)
권호 표지
DOI QR코드

DOI QR Code

중금속 오염 토양 정화를 위한 식물생장촉진세균: 특성, 활용 및 전망

Plant Growth-promoting Bacteria for Remediation of Heavy Metal Contaminated Soil: Characteristics, Application and Prospects

  • 조경숙 (이화여자대학교 환경공학과)
  • Cho, Kyung-Suk (Department of Environmental Science and Engineering, Ewha Womans University)
  • 투고 : 2020.08.26
  • 심사 : 2020.10.15
  • 발행 : 2020.12.28
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⟨ 이전 논문 다음 논문 ⟩

초록

도시화 및 산업화로 인해 발생된 중금속으로 오염된 토양의 정화는 인간의 건강 뿐 아니라 지구생태계의 지속성을 위해 매우 중요하다. 중금속 오염 토양 정화 기술 중 식물상복원법은 타 방법에 비해 처리 단가가 저렴하고, 토양 비옥도 및 생물 다양성이 영향을 덜 받는 환경친화적인 방법이다. 이러한 식물상복원법에 식물생장촉진세균(plant growth promoting bacteria, PGPB)을 도입하여 중금속 독성 하에서 식물 생장을 촉진하고 중금속 정화 효율을 향상시킬 수 있다. 본 논문에서는 주요 토양오염물인 중금속의 발생원, 미생물·식물·인간에 미치는 중금속 영향 및 PGPB의 식물생장촉진 기작을 정리하였다. 중금속 오염 토양 정화를 위하여 식물상복원에 PGPB의 활용에 관한 최근 10년 동안의 연구 동향을 분석하였다. 또한, PGPB의 실제 적용 시 중금속 제거 효율에 미치는 다양한 환경 인자와 PGPB의 접종 방법의 영향을 고찰하였다. PGPB 활용 식물상복원 기술의 혁신을 위해서는 실제 현장에서 PGPB의 거동과 식물-PGPB-자생미생물 사이의 상호작용에 대한 이해가 필요하다.

Remediating soils contaminated with heavy metals due to urbanization and industrialization is very important not only for human health but also for ecosystem sustainability. Of the available remediation technologies for heavy metal-contaminated soils, phytoremediation is a relatively low-cost environment-friendly technology which preserves biodiversity and soil fertility. The application of plant growth-promoting bacteria (PGPB) during the phytoremediation of heavy metal-contaminated soils can enhance plant growth against heavy metal toxicity and increase heavy metal removal efficiency. In this study, the sources of heavy metals that have adverse effects on microorganisms, plants, and humans, and the plant growth-promoting traits of PGPB are addressed and the research trends of PGPB-assisted phytoremediation over the last 10 years are summarized. In addition, the effects of environmental factors and PGPB inoculation methods on the performance of PGPB-assisted phytoremediation are discussed. For the innovation of PGPB-assisted phytoremediation, it is necessary to understand the behavior of PGPB and the interactions among plant, PGPB, and indigenous microorganisms in the field.

키워드

과제정보

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF- 2019R1A2C2006701).

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