Chen, Z. and Nohata, J. and Guo, H. and Li, S. and Liu, J. and Guo, Y. and Yamamoto, K. and Kadono-Okuda, K. and Liu, C. and Arunkumar, K.P. and Nagaraju, J. and Zhang, Y. and Liu, S. and Labropoulou, V. and Swevers, L. and Tsitoura, P. and Iatrou, K. and Gopinathan, K.P. and Goldsmith, M.R. and Xia, Q. and Mita, K. (2015) A comprehensive analysis of the chorion locus in silkmoth. Scientific Reports, 5. p. 16424. ISSN 2045-2322

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Abstract

Despite more than 40 years of intense study, essential features of the silkmoth chorion (eggshell) are still not fully understood. To determine the precise structure of the chorion locus, we performed extensive EST analysis, constructed a bacterial artificial chromosome (BAC) contig, and obtained a continuous genomic sequence of 871,711 base pairs. We annotated 127 chorion genes in two segments interrupted by a 164 kb region with 5 non-chorion genes, orthologs of which were on chorion bearing scaffolds in 4 ditrysian families. Detailed transcriptome analysis revealed expression throughout choriogenesis of most chorion genes originally categorized as “middle”, and evidence for diverse regulatory mechanisms including cis-elements, alternative splicing and promoter utilization, and antisense RNA. Phylogenetic analysis revealed multigene family associations and faster evolution of early chorion genes and transcriptionally active pseudogenes. Proteomics analysis identified 99 chorion proteins in the eggshell and micropyle localization of 1 early and 6 Hc chorion proteins.

Item Type:	Article
Depositing User:	Users 2 not found.
Date Deposited:	03 Dec 2015 09:28
Last Modified:	03 Dec 2015 09:28
URI:	http://cdfd.sciencecentral.in/id/eprint/687

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