Full-length transcriptome assembly of Andrias davidianus (Amphibia: Caudata) skin via hybrid sequencing.,Bioscience Reports

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Full-length transcriptome assembly of Andrias davidianus (Amphibia: Caudata) skin via hybrid sequencing.
Bioscience Reports ( IF 3.8 ) Pub Date : 2021-07-20 , DOI: 10.1042/bsr20210511
Yu Bai _{1,

2,

3} , Yonglu Meng _{2,

3} , Jianlin Luo _{2,

3} , Hui Wang _{2,

3} , Guoyong Li _{2,

3} , Can Li _{2,

3}

Affiliation

The Chinese giant salamander, Andrias davidianus, is the largest amphibian species in the world; it is thus an economically and ecologically important species. The skin of A. davidianus exhibits complex adaptive structural and functional adaptations to facilitate survival in aquatic and terrestrial ecosystems. Here, we report the first full-length amphibian transcriptome from the dorsal skin of A. davidianus, which was assembled using hybrid sequencing and the PacBio and Illumina platforms. A total of 153,038 transcripts were hybrid assembled (mean length of 2,039 bp and N50 of 2,172 bp), and 133,794 were annotated in at least one database (nr, Swiss-Prot, KEGG, KOGs, GO, and nt). A total of 58,732, 68,742, and 115,876 transcripts were classified into 24 KOG categories, 1,903 GO term categories, and 46 KEGG pathways (level 2), respectively. A total of 207,627 protein-coding regions, 785 transcription factors, 27,237 potential long non-coding RNAs, and 8,299 simple sequence repeats were also identified. The hybrid-assembled transcriptome recovered more full-length transcripts, had a higher N50 contig length, and a higher annotation rate of unique genes compared with that assembled in previous studies using next-generation sequencing. The high-quality full-length reference gene set generated in this study will help elucidate the genetic characteristics of A. davidianus skin and aid the identification of functional skin proteins.

更新日期：2021-07-22

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