Application of 18S rDNA Clone Library to Detect Diatom Population Diversity in Dianchi.
10.12116/j.issn.1004-5619.2019.04.013
- Author:
Die HU
1
;
Zhi Yun PI
2
;
Zhi Rong ZHANG
3
;
Yan Xiang CHEN
4
;
Yu Ming XING
2
;
Bao Wen CHENG
2
Author Information
1. Army Medical University, Chongqing 400038, China.
2. Kunming Medical University, Kunming 650500, China.
3. Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China.
4. Yunnan Provincial Public Security Department, Kunming 650228, China.
- Publication Type:Journal Article
- Keywords:
forensic pathology;
forensic genetics;
diatom;
drowning;
18S rDNA;
Dianchi
- MeSH:
China;
DNA, Ribosomal/genetics*;
Diatoms/classification*;
Drowning;
Forensic Sciences;
Humans;
Phylogeny;
RNA, Ribosomal, 18S/genetics*
- From:
Journal of Forensic Medicine
2019;35(4):444-447
- CountryChina
- Language:English
-
Abstract:
Objective To detect the diatom population diversity in Dianchi by constructing a 18S rDNA clone library. Methods DNA from diatoms in 6 water samples of Dianchi was amplified with diatom 18S rDNA specific primer.The 18S rDNA clone library was constructed, and clones were randomly selected for sequence. Sequence alignment was performed by BLAST. The diatom population distribution in Dianchi was analyzed and the phylogenetic tree of diatom 18S rDNA in Dianchi waters was established with the MEGA v7.0.14 software. Results Two hundred and forty clones were sequenced, with 167 diatom sequences obtained, including 11 diatom species such as Stephanodiscus, Diatoma, and Melosira. There were certain differences in diatom population distribution among the 6 samples. Conclusion The population distribution of diatom species in Dianchi shows unique features and the sequence analysis of diatom 18S rDNA has a certain reference value to the inference of forensic drowning sites.
