* 자연과학연구소 전문가 초청 세미나
* 일시: 04/18(목) 16:30 –
* 연사: 신승관 교수(서울대학교)
* 장소: 벤처관 711호
* 제목: Phylogenomic Analysis Unveils Insights into Insect Evolution
*초록
Recent advances in bioinformatics and data provide new opportunities to resolve longstanding questions in insect evolution. Beetles (Coleoptera) arguably comprise the most diverse order of insects. Because of their varied trophic habits, including specialized forms of plant-feeding, they are well-suited for studying the evolution of trophic habits and life histories. However, relatively little remains known about the evolution and genomic basis of plant-feeding in beetles. We inferred the phylogeny of beetles (order Coleoptera) from nearly 5000 nuclear genes and traced the evolution of beetle genes promoting herbivory using 154 transcriptomes or genomes. Phylogenomic analyses resolved previously controversial beetle relationships, dated the origin of beetles to the Carboniferous, and supported the co-diversification of beetles and angiosperms. Moreover, we reconstructed the diversification of plant-feeding beetles, which account for nearly half of all beetle species, following convergent horizontal transfers of bacterial and fungal genes enabling the digestion of plant cell walls. Our findings clarify beetle phylogenetic relationships and reveal new insights into the evolution of plant-feeding and beetle diversity. Furthermore, this study shows how analyses of large-scale genomic data are revealing the evolution and genomic basis of insect biodiversity.