Cycling of extracellular DNA in the soil environment

被引：386

作者：

Levy-Booth, David J.

Campbell, Rachel G.

Gulden, Robert H.

Hart, Miranda M.

Powell, Jeff R.

Klironomos, John N.

Pauls, K. Peter

Swanton, Clarence J.

Trevors, Jack T. ^{[1
]}

Dunfield, Karil E.

机构：

[1] Univ Guelph, Dept Environm Biol, Guelph, ON N1G 2W1, Canada

[2] Univ Guelph, Dept Plant Agr, Guelph, ON N1G 2W1, Canada

[3] Univ Guelph, Dept Integrat Biol, Guelph, ON N1G 2W1, Canada

[4] Univ Guelph, Dept Land Resource Sci, Guelph, ON N1G 2W1, Canada

来源：

SOIL BIOLOGY & BIOCHEMISTRY | 2007年 / 39卷 / 12期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

agriculture; bacteria; cycle; degradation; DNA; environment; extracellular; gene transfer; microorganisms; natural transformation; persistence; recombinant; soil; transgenic plants;

D O I：

10.1016/j.soilbio.2007.06.020

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Upon entering the soil environment, extracellular DNA is subjected to dynamic biological, physical, and chemical factors that determine its fate. This review concerns the fate of both recombinant and non-recombinant sources of DNA. A schematic of DNA cycling coupled with genetic transformation is presented to understand its behavior in soil. Extracellular DNA may persist through cation bridging onto soil minerals and humic substances, be enzymatically degraded and restricted by DNases of microbial origin, and/or enter the microbial DNA cycle through natural transformation of competent bacteria. Lateral gene transfer may disseminate DNA through the microbial community. An understanding of DNA cycling is fundamental to elucidating the fate of extracellular DNA in the soil environment. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2977 / 2991

页数：15

共 164 条

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