The sweetpotato whitefly, Bemisia tabaci, is a vector insect of more than 100 plant-diseased viruses as well as a serious pest of various horticultural crops. B. tabaci is a species-complex that consists of at least 24 biotypes, which show different biological characteristics including host range, fecundity, insecticide resistance and virus transmission. Here we identified biotype, endosymbiotic bacteria, and tomato yellow leaf curl virus (TYLCV) acquisition of various B. tabaci populations collected in Korea. In addition, we compared those profiles with B. tabaci collected from Bangladesh and Myanmar, and the greenhouse whitefly, Trialeurodes vaporariorum. PCR diagnosis of cytochrome oxidase I (COI) showed that all B. tabaci populations of Korea were Q-biotype and closely related with a subgroup I (MedBasin 1), which is indigenous to the Western Mediterranean area. Ribosomal DNA analysis of 5 endosymbionts showed that both Cardinium and Hamiltonella were detected in most tested populations while the presence of Arsenophonus, Fritschea and Wolbachia dependent on populations. Our results suggest that the acquisition of TYLCV do not related with the endosymbiont profile of B. tabaci.

• S. M. Hemayet Jahan(School of Applied Biosciences, Kyungpook National University)
• Woo-Geun Song(School of Applied Biosciences, Kyungpook National University)
• Jungan Park(Department of Genetic Engineering, Sungkyunkwan University)
• Hyejung Lee(Department of Genetic Engineering, Sungkyunkwan University)
• Hong-Soo Choi(National Institutes of Agricultural Science)
• Kwan-Suk Lee(National Institutes of Agricultural Science)
• Chang-Suk Kim(National Institutes of Agricultural Science)
• Sukchan Lee(Department of Genetic Engineering, Sungkyunkwan University)
• Kyeong-Yeoll Lee(School of Applied Biosciences, Kyungpook National University)