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000007048 084__ $$2WoS$$aBiotechnology & Applied Microbiology
000007048 1001_ $$0P:(DE-Juel1)VDB89160$$aNing, J.$$b0$$uFZJ
000007048 245__ $$aDifferent influences of DNA purity indices and quantity on PCR-based DGGE and functional gene microarray in soil microbial community study
000007048 260__ $$aBerlin$$bSpringer$$c2009
000007048 300__ $$a983 - 993
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000007048 440_0 $$0555$$aApplied Microbiology and Biotechnology$$v82$$x0175-7598$$y5
000007048 500__ $$aThe manuscript is a joint approach within the working group "Biodiversity" of the Helmholtz Association, Germany. The authors would like to thank Eva Mareike Seeger, Mareike Braeckevelt, and Heidrun Paschke in the group of the Department of Bioremediation (UFZ, Germany) for the help during the sampling at the SAFIRA plant in Bitterfeld and the group in the Institute for Environmental Genomics (Oklahoma, USA) for providing the microarray chips, as well as Dr. Naixin Li for the valuable discussion. The construction of microarray chips and its functional gene array predecessors is supported by the Environmental Stress Pathway Project (ESPP) of the Virtual Institute for Microbial Stress and Survival (http://vimss. lbl. gov) supported by the U. S. Department of Energy, Office of Science, Office of Biological and Environmental Research, Genomics: GTL Program, through contract DE- AC0205CH11231 with Lawrence Berkeley National Laboratory.
000007048 520__ $$aBased on the comparative study of the DNA extracts from two soil samples obtained by three commercial DNA extraction kits, we evaluated the influence of the DNA quantity and purity indices (the absorbance ratios A260/280 and A260/230, as well as the absorbance value A320 indicating the amount of humic substances) on polymerase chain reaction (PCR)-based denaturing gradient gel electrophoresis (DGGE) and a functional gene microarray used in the study of microbial communities. Numbers and intensities of the DGGE bands are more affected by the A260/280 and A320 values than by the ratio A260/230 and conditionally affected by the DNA yield. Moreover, we demonstrated that the DGGE band pattern was also affected by the preferential extraction due to chemical agents applied in the extraction. Unlike DGGE, microarray is more affected by the A260/230 and A320 values. Until now, the successful PCR performance is the mostly used criterion for soil DNA purity. However, since PCR was more influenced by the A260/280 ratio than by A260/230, it is not accurate enough any more for microbial community assessed by non-PCR-based methods such as microarray. This study provides some useful hints on how to choose effective DNA extraction method for the subsequent assessment of microbial community.
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000007048 65320 $$2Author$$aDNA purity indices
000007048 65320 $$2Author$$aDNA yield
000007048 65320 $$2Author$$aDGGE
000007048 65320 $$2Author$$aFunctional gene microarray
000007048 65320 $$2Author$$aMicrobial community analyses
000007048 650_2 $$2MeSH$$aBacteriological Techniques: methods
000007048 650_2 $$2MeSH$$aBiodiversity
000007048 650_2 $$2MeSH$$aDNA, Bacterial: isolation & purification
000007048 650_2 $$2MeSH$$aElectrophoresis, Gel, Two-Dimensional: methods
000007048 650_2 $$2MeSH$$aHumic Substances: analysis
000007048 650_2 $$2MeSH$$aOligonucleotide Array Sequence Analysis: methods
000007048 650_2 $$2MeSH$$aPolymerase Chain Reaction: methods
000007048 650_2 $$2MeSH$$aReagent Kits, Diagnostic: standards
000007048 650_2 $$2MeSH$$aReproducibility of Results
000007048 650_2 $$2MeSH$$aSoil Microbiology
000007048 650_7 $$00$$2NLM Chemicals$$aDNA, Bacterial
000007048 650_7 $$00$$2NLM Chemicals$$aHumic Substances
000007048 650_7 $$00$$2NLM Chemicals$$aReagent Kits, Diagnostic
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000007048 7001_ $$0P:(DE-Juel1)VDB940$$aLiebich, J.$$b1$$uFZJ
000007048 7001_ $$0P:(DE-Juel1)VDB17717$$aKästner, M.$$b2$$uFZJ
000007048 7001_ $$0P:(DE-Juel1)VDB89161$$aZhou, J. Z.$$b3$$uFZJ
000007048 7001_ $$0P:(DE-Juel1)VDB1399$$aSchäffer, A.$$b4$$uFZJ
000007048 7001_ $$0P:(DE-Juel1)VDB202$$aBurauel, P.$$b5$$uFZJ
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