Comparative Analysis of the Transcriptome in Tissues Secreting Purple and White Nacre in the Pearl Mussel Hyriopsis cumingii
文献类型： 外文期刊
作者： Bai, Zhiyi 1 ; Zheng, Hanfeng 1 ; Lin, Jingyun 1 ; Wang, Guiling 1 ; Li, Jiale 1 ;
作者机构： 1.Shanghai Ocean Univ, Minist Agr, Key Lab Freshwater Aquat Genet Resources, Shanghai, Peoples R China
2.Chinese Acad Fishery Sci, E China Sea Fisheries Res Inst, Shanghai, Peoples R China
3.Shanghai Ocean Univ, E Inst Shanghai Univ, Aquaculture Div, Shanghai, Peoples R China
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2013 年 8 卷 1 期
页码：
收录情况： SCI
摘要： The triangle sail mussel Hyriopsis cumingii (Lea) is the most important mussel species used for commercial freshwater pearl production in China. Mussel color is an important indicator of pearl quality. To identify genes involved in the nacre coloring, we conducted RNA-seq and obtained 541,268 sequences (298 bp average size) and 440,034 sequences (293 bp average size) in secreting purple and white nacre libraries (P-and W-libraries), respectively. The 981,302 Expressed Sequence Tags (ESTs) were assembled into 47,812 contigs and 289,386 singletons. In BLASTP searches of the deduced protein, 22,495 were proteins with functional annotations. Thirty-three genes involved in pearl or shell formation were identified. Digital expression analysis identified a total of 358 differentially expressed genes, and 137 genes in the P-library and 221 genes in the W-library showed significantly higher expression. Furthermore, a set of SSR motifs and SNPs between the two samples was identified from the ESTs, which provided the markers for genetic linkage, QTL analysis and future breeding. These EST sequences provided valuable information to further understand the molecular mechanisms involved in the formation, color determination and evolution of the pearl or shell.
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