TY - JOUR
T1 - De novo transcriptome assembly and annotation for the desert rainbowfish (Melanotaenia splendida tatei) with comparison with candidate genes for future climates
AU - Gates, Katie
AU - Sandoval-Castillo, Jonathan
AU - Bernatchez, Louis
AU - Beheregaray, Luciano
PY - 2017/10
Y1 - 2017/10
N2 - Transcriptomics via RNA-seq has rapidly emerged as a powerful tool for ecological and evolutionary studies, enabling genome-scale studies of adaptation via regulation of global gene expression. Here we present a de novo transcriptome for the desert rainbowfish (Melanotaenia splendida tatei) based on individuals sampled in the Lake Eyre Basin, Australia's arid zone river system. Recently developed methods in RNA-seq and bioinformatics were used for sequencing, assembling and annotating a high-quality liver transcriptome suitable for studies of ecology and adaptation in desert rainbowfish. Transcript annotation in UniprotKB using BLASTx assigned unique protein matches to ~ 47% of 116,092 Trinity genes, while BLASTp assigned unique protein matches to ~ 35% of 62,792 predicted protein-coding regions. A full Trinotate annotation report is provided for predicted genes and their corresponding transcripts. Annotations were compared with previously identified genes for transcriptional regulation and heritable plasticity in future climates in the subtropical rainbowfish (M. duboulayi), finding ~ 57% of these candidate genes present in the desert rainbowfish transcriptome. We discuss the utility of transcriptomics methods for ecological studies of adaptation, while emphasising a range of methodological considerations for dealing with transcriptome datasets. This newly assembled transcriptome is expected to help elucidate mechanisms for adaptation to high temperatures and a variable climate in desert aquatic fauna.
AB - Transcriptomics via RNA-seq has rapidly emerged as a powerful tool for ecological and evolutionary studies, enabling genome-scale studies of adaptation via regulation of global gene expression. Here we present a de novo transcriptome for the desert rainbowfish (Melanotaenia splendida tatei) based on individuals sampled in the Lake Eyre Basin, Australia's arid zone river system. Recently developed methods in RNA-seq and bioinformatics were used for sequencing, assembling and annotating a high-quality liver transcriptome suitable for studies of ecology and adaptation in desert rainbowfish. Transcript annotation in UniprotKB using BLASTx assigned unique protein matches to ~ 47% of 116,092 Trinity genes, while BLASTp assigned unique protein matches to ~ 35% of 62,792 predicted protein-coding regions. A full Trinotate annotation report is provided for predicted genes and their corresponding transcripts. Annotations were compared with previously identified genes for transcriptional regulation and heritable plasticity in future climates in the subtropical rainbowfish (M. duboulayi), finding ~ 57% of these candidate genes present in the desert rainbowfish transcriptome. We discuss the utility of transcriptomics methods for ecological studies of adaptation, while emphasising a range of methodological considerations for dealing with transcriptome datasets. This newly assembled transcriptome is expected to help elucidate mechanisms for adaptation to high temperatures and a variable climate in desert aquatic fauna.
KW - Climate change
KW - Ecological genomics
KW - Gene expression
KW - RNA-seq
KW - Teleost
KW - Thermal tolerance
UR - http://www.scopus.com/inward/record.url?scp=85019882018&partnerID=8YFLogxK
U2 - 10.1016/j.margen.2017.05.008
DO - 10.1016/j.margen.2017.05.008
M3 - Article
SN - 1874-7787
VL - 35
SP - 63
EP - 68
JO - Marine Genomics
JF - Marine Genomics
ER -