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- 저자 : Hurwood, David A. (검색결과 1 건)
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Jung, Hyungtaek,Yoon, Byung-Ha,Kim, Woo-Jin,Kim, Dong-Wook,Hurwood, David A.,Lyons, Russell E.,Salin, Krishna R.,Kim, Heui-Soo,Baek, Ilseon,Chand, Vincent,Mather, Peter B.,Lin, Li MDPI AG 2016 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.17 No.5
<P>The giant freshwater prawn, <I>Macrobrachium rosenbergii</I>, a sexually dimorphic decapod crustacean is currently the world’s most economically important cultured freshwater crustacean species. Despite its economic importance, there is currently a lack of genomic resources available for this species, and this has limited exploration of the molecular mechanisms that control the <I>M. rosenbergii</I> sex-differentiation system more widely in freshwater prawns. Here, we present the first hybrid transcriptome from <I>M. rosenbergii</I> applying RNA-Seq technologies directed at identifying genes that have potential functional roles in reproductive-related traits. A total of 13,733,210 combined raw reads (1720 Mbp) were obtained from Ion-Torrent PGM and 454 FLX. Bioinformatic analyses based on three state-of-the-art assemblers, the CLC Genomic Workbench, Trans-ABySS, and Trinity, that use single and multiple <I>k</I>-mer methods respectively, were used to analyse the data. The influence of multiple <I>k</I>-mers on assembly performance was assessed to gain insight into transcriptome assembly from short reads. After optimisation, <I>de novo</I> assembly resulted in 44,407 contigs with a mean length of 437 bp, and the assembled transcripts were further functionally annotated to detect single nucleotide polymorphisms and simple sequence repeat motifs. Gene expression analysis was also used to compare expression patterns from ovary and testis tissue libraries to identify genes with potential roles in reproduction and sex differentiation. The large transcript set assembled here represents the most comprehensive set of transcriptomic resources ever developed for reproduction traits in <I>M. rosenbergii</I>, and the large number of genetic markers predicted should constitute an invaluable resource for future genetic research studies on <I>M</I>. <I>rosenbergii</I> and can be applied more widely on other freshwater prawn species in the genus <I>Macrobrachium</I>.</P>
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