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期刊论文
Binding and Transformation of Extracellular DNA in Soil.1
Pedosphere 16 (1): 16-20, 2005,-0001,():
DNA is the genetic material of various organisms. Extracellular DNA adsorbed or bound on surface-active particlesin soils has been shown to persist for long periods against nucleases degradation and still retain the ability to transformcompetent cells. This paper reviews some recent advances on the binding and transformation of extracellular DNA in soils,which is fundamental to understanding the nature of the soil, regulating biodiversity, and assessing the risk of releasinggenetically engineered microorganisms (GEMs) as well as being helpful for development of the genetic evolutional theoryof bacteria. Several influencing factors, such as soil pH, ionic strength, soil surface properties, and characteristics of theDNA polymer, are discussed. To date, the understanding of the type of molecular binding sites and the conformation ofadsorbed and bound DNA to soil particles is still in its infancy.
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