genome profiling (gp) method based classification of insects congruence with that of classical phenotype-based one基因组分析(gp)方法为基础的分类昆虫与古典phenotype-based一致.pdfVIP

Genome Profiling (GP) Method Based Classification of Insects: Congruence with That of Classical Phenotype-Based One 1 1 1 1 2 Shamim Ahmed , Manabu Komori , Sachika Tsuji-Ueno , Miho Suzuki , Akinori Kosaku , Kiyoshi 3 1 Miyamoto , Koichi Nishigaki * 1 Graduate School of Science and Engineering, Saitama University, Saitama, Japan, 2 Laboratory of Clinical Sciences, Dokkyo Medical University, Tochigi, Japan, 3 Laboratory of Medical Sciences, Dokkyo Medical University, Tochigi, Japan Abstract Background: Ribosomal RNAs have been widely used for identification and classification of species, and have produced data giving new insights into phylogenetic relationships. Recently, multilocus genotyping and even whole genome sequencing-based technologies have been adopted in ambitious comparative biology studies. However, such technologies are still far from routine-use in species classification studies due to their high costs in terms of labor, equipment and consumables. Methodology/Principal Findings: Here, we describe a simple and powerful approach for species classification called genome profiling (GP). The GP method composed of random PCR, temperature gradient gel electrophoresis (TGGE) and computer-aided gel image processing is highly informative and less laborious. For demonstration, we classified 26 species of insects using GP and 18S rDNA-sequencing approaches. The GP method was found to give a better correspondence to the classical phenotype-based approach than did 18S rDNA sequencing employing a congruence value. To our surprise, use of a single probe in GP was sufficient to identify the relationships between the insect speci