RRC ID 64947
著者 Lee J, Nishiyama T, Shigenobu S, Yamaguchi K, Suzuki Y, Shimada T, Katsuma S, Kiuchi T.
タイトル The genome sequence of Samia ricini, a new model species of lepidopteran insect.
ジャーナル Mol Ecol Resour
Abstract Samia ricini, a gigantic saturniid moth, has the potential to be a novel lepidopteran model species. Samia ricini is far more resistant to diseases than the current model species Bombyx mori, and therefore can be more easily reared. In addition, genetic resources available for S. ricini rival those for B. mori: at least 26 ecoraces of S. ricini are reported and S. ricini can hybridize with wild Samia species, which are distributed throughout Asian countries, and produce fertile progenies. Physiological traits such as food preference, integument colour and larval spot pattern differ among S. ricini strains and wild Samia species so that those traits can be targeted in forward genetic analyses. To facilitate genetic research in S. ricini, we determined its whole genome sequence. The assembled genome of S. ricini was 458 Mb with 155 scaffolds, and the scaffold N50 length of the assembly was ~ 21 Mb. In total, 16,702 protein coding genes were predicted. While the S. ricini genome was mostly collinear with that of B. mori with some rearrangements and few S. ricini-specific genes were discovered, chorion genes and fibroin genes seemed to have expanded in the S. ricini lineage. As the first step of genetic analyses, causal genes for "Blue," "Yellow," "Spot," and "Red cocoon" phenotypes were mapped to chromosomes.
巻・号 21(1)
ページ 327-339
公開日 2021-1-1
DOI 10.1111/1755-0998.13259
PMID 32985129
MeSH Animals Genome, Insect* Larva Moths* / genetics
IF 6.286
リソース情報
カイコ Samia ricini Samia cynthia pryeri