Korpelainen Helena, Virtanen Viivi
Department of Applied Biology, P.O. Box 27, FIN-00014 University of Helsinki, Finland.
J Forensic Sci. 2003 Jul;48(4):804-7.
Our study introduces the use of DNA fingerprinting of clonal plants in combination with phylogenetic and vegetation studies as a prospective forensic tool in criminal investigations. In this homicide case, the bryophyte species found on the suspects were identified as Brachythecium albicans, Calliergonella lindbergii, and Ceratodon purpureus. Colonies of all three species occurred at the crime site. DNA fingerprinting analyses were conducted for B. albicans and C. lindbergii, which were expected to reproduce mainly clonally, unlike C. purpureus, and included samples found on the suspects and samples collected from the crime site and other locations. It was concluded that B. albicans found on the suspects was likely to originate from the crime scene and that the sample of C. lindbergii may also have originated from the same site.
我们的研究引入了将克隆植物的DNA指纹识别与系统发育和植被研究相结合的方法,作为刑事调查中一种潜在的法医工具。在这起杀人案件中,在嫌疑人身上发现的苔藓植物物种被鉴定为白齿藓、林氏小曲尾藓和角齿藓。这三个物种的菌落都出现在犯罪现场。对白齿藓和林氏小曲尾藓进行了DNA指纹分析,预计这两种苔藓主要通过克隆方式繁殖,与角齿藓不同,分析样本包括在嫌疑人身上发现的样本以及从犯罪现场和其他地点采集的样本。得出的结论是,在嫌疑人身上发现的白齿藓很可能源自犯罪现场,林氏小曲尾藓的样本也可能源自同一地点。