Genome and transcriptome characterization of the glycoengineered Nicotiana benthamiana line ΔXT/FT.
Accession history
Gene prediction
Genome
Intraspecific variation
Nicotiana benthamiana
Transgene
Journal
BMC genomics
ISSN: 1471-2164
Titre abrégé: BMC Genomics
Pays: England
ID NLM: 100965258
Informations de publication
Date de publication:
19 Jul 2019
19 Jul 2019
Historique:
received:
07
03
2019
accepted:
08
07
2019
entrez:
21
7
2019
pubmed:
22
7
2019
medline:
18
12
2019
Statut:
epublish
Résumé
The allotetraploid tobacco species Nicotiana benthamiana native to Australia has become a popular host for recombinant protein production. Although its usage grows every year, little is known on this plant's genomic and transcriptomic features. Most N. benthamiana accessions currently used in research lack proper documentation of their breeding history and provenance. One of these, the glycoengineered N. benthamiana line ΔXT/FT is increasingly used for the production of biopharmaceutical proteins. Based on an existing draft assembly of the N. benthamiana genome we predict 50,516 protein -encoding genes (62,216 transcripts) supported by expression data derived from 2.35 billion mRNA-seq reads. Using single-copy core genes we show high completeness of the predicted gene set. We functionally annotate more than two thirds of the gene set through sequence homology to genes from other Nicotiana species. We demonstrate that the expression profiles from leaf tissue of ΔXT/FT and its wild type progenitor only show minimal differences. We identify the transgene insertion sites in ΔXT/FT and show that one of the transgenes was inserted inside another predicted gene that most likely lost its function upon insertion. Based on publicly available mRNA-seq data, we confirm that the N. benthamiana accessions used by different research institutions most likely derive from a single source. This work provides gene annotation of the N. benthamiana genome, a genomic and transcriptomic characterization of a transgenic N. benthamiana line in comparison to its wild-type progenitor, and sheds light onto the relatedness of N. benthamiana accessions that are used in laboratories around the world.
Sections du résumé
BACKGROUND
BACKGROUND
The allotetraploid tobacco species Nicotiana benthamiana native to Australia has become a popular host for recombinant protein production. Although its usage grows every year, little is known on this plant's genomic and transcriptomic features. Most N. benthamiana accessions currently used in research lack proper documentation of their breeding history and provenance. One of these, the glycoengineered N. benthamiana line ΔXT/FT is increasingly used for the production of biopharmaceutical proteins.
RESULTS
RESULTS
Based on an existing draft assembly of the N. benthamiana genome we predict 50,516 protein -encoding genes (62,216 transcripts) supported by expression data derived from 2.35 billion mRNA-seq reads. Using single-copy core genes we show high completeness of the predicted gene set. We functionally annotate more than two thirds of the gene set through sequence homology to genes from other Nicotiana species. We demonstrate that the expression profiles from leaf tissue of ΔXT/FT and its wild type progenitor only show minimal differences. We identify the transgene insertion sites in ΔXT/FT and show that one of the transgenes was inserted inside another predicted gene that most likely lost its function upon insertion. Based on publicly available mRNA-seq data, we confirm that the N. benthamiana accessions used by different research institutions most likely derive from a single source.
CONCLUSIONS
CONCLUSIONS
This work provides gene annotation of the N. benthamiana genome, a genomic and transcriptomic characterization of a transgenic N. benthamiana line in comparison to its wild-type progenitor, and sheds light onto the relatedness of N. benthamiana accessions that are used in laboratories around the world.
Identifiants
pubmed: 31324144
doi: 10.1186/s12864-019-5960-2
pii: 10.1186/s12864-019-5960-2
pmc: PMC6642603
doi:
Substances chimiques
Glycoproteins
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
594Subventions
Organisme : Austrian Science Fund FWF
ID : W 1224
Pays : Austria
Organisme : Austrian Science Fund
ID : W1224
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