A1 Journal article (refereed)
De novo transcriptome assembly of a facultative parasitic nematode Pelodera (syn. Rhabditis) strongyloides (2019)
Zhang, M., Heikkinen, L., Knott, E., & Wong, G. (2019). De novo transcriptome assembly of a facultative parasitic nematode Pelodera (syn. Rhabditis) strongyloides. Gene, 710, 30-38. https://doi.org/10.1016/j.gene.2019.05.041
JYU authors or editors
Publication details
All authors or editors: Zhang, Menglei; Heikkinen, Liisa; Knott, Emily; Wong, Garry
Journal or series: Gene
ISSN: 0378-1119
eISSN: 1879-0038
Publication year: 2019
Volume: 710
Issue number: 0
Pages range: 30-38
Publisher: Elsevier BV
Publication country: Netherlands
Publication language: English
DOI: https://doi.org/10.1016/j.gene.2019.05.041
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/64434
Abstract
Pelodera strongyloides is a generally free-living gonochoristic facultative nematode. The whole genomic sequence of P. strongyloides remains unknown but 4 small subunit ribosomal RNA (ssrRNA) gene sequences are available. This project launched a de novo transcriptome assembly with 100 bp paired-end RNA-seq reads from normal, starved and wet-plate cultured animals. Trinity assembly tool generated 104,634 transcript contigs with N50 contig being 2195 bp and average contig length at 1103 bp. Transcriptome BLASTX matching results of five nematodes (C. elegans, Strongyloides stercoralis, Necator americanus, Trichuris trichiura, and Pristionchus pacificus) were consistent with their evolutionary relationships. Sixteen genes were identified to be homologous to key elements of the C. elegans RNA interference system, such as Dicer, Argonaute, RNA-dependent RNA polymerase and double strand RNA transport proteins. In starved samples, we observed up-regulation of cuticle related genes and 3 dauer formation genes. Dauer morphology was captured with enlarged phasmid under light microscopy, and dauer and normal larvae counts in clumps had a Pearson's product-moment correlation of 0.805 with P-value = 0.0088. Our results demonstrate that P. strongyloides could be used for studying nematode-related human or pet parasitic diseases. The sequenced assembled transcriptome reported here may be useful to understand the evolution of parasitism in Nematoda.
Keywords: parasites; nematodes; RNA; transcription (biological events)
Free keywords: dauer; facultative parasite; Pelodera strongyloides; starvation; transcriptome assembly
Contributing organizations
Related projects
- Larval polymorphism and evolutionary transitions in developmental mode
- Knott, Emily
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2019
JUFO rating: 1