2007
DOI: 10.1016/j.jas.2006.10.023
|View full text |Cite
|
Sign up to set email alerts
|

Animal DNA in PCR reagents plagues ancient DNA research

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1

Citation Types

3
121
1

Year Published

2008
2008
2023
2023

Publication Types

Select...
5
4

Relationship

1
8

Authors

Journals

citations
Cited by 148 publications
(125 citation statements)
references
References 39 publications
(32 reference statements)
3
121
1
Order By: Relevance
“…However, it is also important to note that standard European/Indian subcontinental/Chinese haplotypes such as 8 would result if either the specimens or laboratory procedures were contaminated with any amount of modern chicken DNA. The contamination of laboratory consumables is a well known problem when working with ancient samples of domestic species (20), which tend to be widespread but not genetically diverse.…”
Section: Phylogenetic Position Of Archaeological Pacific and Pre-columentioning
confidence: 99%
“…However, it is also important to note that standard European/Indian subcontinental/Chinese haplotypes such as 8 would result if either the specimens or laboratory procedures were contaminated with any amount of modern chicken DNA. The contamination of laboratory consumables is a well known problem when working with ancient samples of domestic species (20), which tend to be widespread but not genetically diverse.…”
Section: Phylogenetic Position Of Archaeological Pacific and Pre-columentioning
confidence: 99%
“…Importantly, we obtained PCR products of the expected length from six of the 39 modern control samples using the same primers and amplification conditions as were applied to the ancient samples; the remaining control samples produced no PCR products of the expected length. In-depth FLX sequencing of the products generated a total of 32,874 sequence reads, all of which derive from common laboratory contaminants-cow, pig, or mouse (30) or, in one case, bacterial DNA-and not from megafauna taxa such as mammoth or horse. Amplification of low-level laboratory contaminants is expected when no other target DNA is present (31).…”
Section: Resultsmentioning
confidence: 99%
“…Historic squirrel specimens were amplified using 52 different primer sets, some of which were mammal ''universal'' (n = 23), and some of which were designed for these squirrels, and will be referred to here as ''specific'' primer sets (n = 29). When possible, the universal primers were designed to exclude human and cow, two ubiquitous contaminants in commercial reagents (Leonard et al 2007 City, CA, USA), 2.5 mM MgCl 2 , 0.8 mM dNTPs (0.2 mM each), 1 lM of each primer, 1.25 U AmpliTaq Gold DNA polymerase (Applied Biosystems) and between 10 and 50 ng of DNA. The PCR program started with an initial denaturation step of 95°C for 10 min followed by 36 cycles of 95°C for 30 s, annealing of 50-60°C for 30 s and extension of 72°C for 45 s; with a final extension of 72°C for 10 min.…”
Section: Introductionmentioning
confidence: 99%