지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.2
- 수록면
- 146 - 159 (14page)
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초록· 키워드
오류제보하기
The continuous increase in the production of metals and their subsequent release into the environment has lead to increased concentration of these elements in agricultural soils. Because microbes are involved in almost every chemical transformations taking place in the soil, considerable attention has been given to assessing their responses to metal contaminants. Short-term and long-term exposures to toxic metals have been shown to reduce microbial diversity, biomass and activities in the soil. Several studies show that microbial parameters like basal respiration, metabolic quotient, and enzymatic activities, including those of oxidoreductases and those involved in the cycle of C, N, P and other elements, exhibit sensitivity to soil metal concentrations. These have been therefore, regarded as good indices for assessing the impact of metal contaminants to the soil. Metal contamination has also been extensively shown to decrease species diversity and cause shifts in microbial community structure. Biochemical and molecular techniques that are currently being employed to detect these changes are continuously challenged by several limiting factors, although showing some degree of sensitivity and efficiency. Variations and inconsistencies in the responses of bioindicators to metal stress in the soil can also be explained by differences in bioavailability of the metal to the microorganisms. This, in turn, is influenced by soil characteristics such as CEC, pH, soil particles and other factors. Therefore, aside from selecting the appropriate techniques to better understand microbial responses to metals, it is also important to understand the prevalent environmental conditions that interplay to bring about observed changes in any given soil parameter.
목차
Introduction
Metal and Metalloid Contamination of Agricultural Soils
Effects of Metal and Metalloid Contamination on Soil Microorganisms
Effects of Metals on Microbial Biomass
Effect of Metals on Basal Respiration and Metabolic Quotient
Effect of Metals on Enzyme Activity
Effect of Metal Contamination on Microbial Diversity
Effects of Metals on Microbial Diversity based on Biochemical-based Techniques
Effects of Metals on Microbial Diversity based on Molecular-based Techniques
Influence of Soil Parameters on Metal Toxicity to Microorganisms
Conclusion
References
참고문헌 (105)
참고문헌 신청
Adhikari, S / 2004 / Behavioral role of zinc on primary productivity, plankton and growth of a freshwater teleost, Labeo rohita (Hamilton) / Aquaculture 231:327~336
Alef, K / 1995 / Phosphatase activity / Academic :335~344
Alloway, B.J / 1995 / Heavy metals in soils / Blackie Academic and Professional
Almas, A.R / 2004 / Changes in tolerance of soil microbial communities in Zn and Cd contaminated soils / Soil Biol. Biochem 36:805~813
Anderson, J.P.E / 1982 / Soil respiration / American Society of Agronomy
Alef, K / 1995 / Phosphatase activity / Academic :335~344
Alloway, B.J / 1995 / Heavy metals in soils / Blackie Academic and Professional
Almas, A.R / 2004 / Changes in tolerance of soil microbial communities in Zn and Cd contaminated soils / Soil Biol. Biochem 36:805~813
Anderson, J.P.E / 1982 / Soil respiration / American Society of Agronomy
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UCI(KEPA) : I410-ECN-0101-2014-521-000706199