Gossypium barbadense (AD2) Genome HAU-SGI Assembly v1.0 & Annotation v1.0

Genome Overview
Analysis NameGossypium barbadense (AD2) Genome HAU-SGI Assembly v1.0 & Annotation v1.0
MethodSOAPdenovo (2)
SourceIllumina paired-end (insert size of ~500 bp) and mate-pair (insert size of 5, 10 and 20 kb)
Date performed2016-03-25

About the assembly

This is a high-quality assembly of the 2.57 gigabase genome of G. barbadense, including 80,876 protein-coding genes. The double-sized genome of the A (or At) (1.50 Gb) against D (or Dt) (853 Mb) primarily resulted from the expansion of Gypsy elements, including Peabody and Retrosat2 subclades in the Del clade, and the Athila subclade in the Athila/Tat clade. Substantial gene expansion and contraction were observed and rich homoeologous gene pairs with biased expression patterns were identified, suggesting abundant gene sub-functionalization occurred by allopolyploidization. More specifically, the CesA gene family has adapted differentially temporal expression patterns, suggesting an integrated regulatory mechanism of CesA genes from At and Dt subgenomes for the primary and secondary cellulose biosynthesis of cotton fibre in a “relay race”-like fashion. It is anticipated that the G. barbadense genome sequence will advance the understanding of the mechanism of genome polyploidization and underpin genome-wide comparison research in this genus.

  Whole genome Allocated to subgenomes
At-subgenome Dt-subgenome Ungrouped
Scaffold N50 (Mb) 0.260 0.253 0.306 0.157
Maximum scaffold length (Mb) 2.15 1.63 2.15 0.96
Minimum scaffold length (Mb) 0.001 0.001 0.001 0.001
Number of scaffolds 29,751 14,319 6,967 8,465
Total length of assemblies (Mb) 2,573.19 1,493.53 852.98 226.68
Total gaps in assemblies (Mb) 334.55 223.47 82.35 28.72
Number of protein-coding genes 80,876 36,947 34,575 9,354
Average gene density (per 100 kb) 3.14 2.47 4.05 4.12
Average exon/intron sizes (bp) 283.40/423.41 283.07/434.49 281.81/422.92 290.92/449.44
Total size of transposable elements (Mb) 1,778.62 1097.99 541.57 139.06

 

Publication

Yuan et.al, The genome sequence of Sea-Island cotton (Gossypium barbadense) provides insights into the allopolyploidization and development of superior spinnable fibres. Sci Rep. 2015 Dec 4;5:17662. doi: 10.1038/srep17662.

Assembly

The chromosomes (pseudomolecules) and scaffolds for Gossypium barbadense (AD1) Genome HAU-NBI Assembly v1.0

Assembly (FASTA format) AD2-NBI_v1.0_assembly.fas.gz
Assembly - chromosomes only (FASTA format) AD2-NBI_v1.0_chromosomes_only.fas.gz
Assembly - scaffolds only (FASTA format) AD2-NBI_v1.0_scaffold_only.fas.gz
Assembly - other anchored sequences (FASTA format) AD2-NBI_v1.0_other_anchored.fas.gz
Genes

The predicted genes and proteins for Gossypium barbadense (AD2) Genome HAU-NBI Assembly v1.0
 

Predicted genes coding sequences (CDS) (FASTA format) AD2-NBI_v1.0.cds.fas.gz
cDNA sequences (FASTA format) AD2-NBI_v1.0.cDNA.fas.gz
Predicted genes (FASTA format) AD2-NBI_v1.0.gene.fas.gz
Predicted genes proteins (FASTA format) AD2-NBI_v1.0.pep.fas.gz
Predicted gene model (GFF3 format) Gb.final.all.gene.model.gff3.gz
Markers
Marker alignments were performed by the CottonGen Team of Main Bioinformatics Lab at WSU. The alignment tool 'BLAT' was used to map marker sequences from CottonGen to the G. barbadense genome assembly. Markers required 90% identity over 97% of their length. For SSRs & RFLPs, gap size was restricted to 1000bp or less with less than 2 gaps. For dbSNPs and Indels gap size was restricted to 2bp with less than 2 gaps. The available files are in GFF3 format. Markers available in CottonGen and CMap are linked to JBrowse.
 
CottonGen SNP markers mapped to genome G.barbadense_HAU-NBI_v1.0_SNP
CottonGen RFLP markers mapped to genome G.barbadense_HAU-NBI_v1.0_RFLP
CottonGen SSR markers mapped to genome G.barbadense_HAU-NBI_v1.0_SSR
CottonGen InDel markers mapped to genome G.barbadense_HAU-NBI_v1.0_CTG_Indels
NCBI Cotton dbSNPs mapped to genome G.barbadense_HAU-NBI_v1.0_SNP
Transcript Alignments
Transcript alignments were performed by the CottonGen Team of Main Bioinformatics Lab at WSU. The alignment tool 'BLAT' was used to map transcripts to the G. barbadense genome assembly. Alignments with an alignment length of 97% and 90% identify were preserved. The available files are in GFF3 format.

 

dbEST for all Gossypium G.barbadense_HAU-NBI_v1.0_dbEST
dbEST for G. arboreum G.barbadense_HAU-NBI_v1.0_dbEST_G-arboreum
dbEST for G. barbadense G.barbadense_HAU-NBI_v1.0_dbEST_G-barbadense
dbEST for G. herbaceum G.barbadense_HAU-NBI_v1.0_dbEST_G-herbaceum
dbEST for G. barbadense G.barbadense_HAU-NBI_v1.0_dbEST_G-barbadense
dbEST for G. raimondii G.barbadense_HAU-NBI_v1.0_dbEST_G-raimondii
Unigene from NCBI for all Gossypium G.barbadense_HAU-NBI_v1.0_NCBI-unigenes
Unigene from NCBI for  G. hirsutum G.barbadense_HAU-NBI_v1.0_NCBI_G-hirsutum-unigene
Unigene from NCBI for  G. raimondii G.barbadense_HAU-NBI_v1.0_NCBI_G-raimondii-unigene
CottonGen unigene v1.0 G.barbadense_HAU-NBI_v1.0_cottongen-unigenes
J. Udall 2012 Unigene contigs G.barbadense_HAU-NBI_v1.0_Udall2012-unigenes
J. Udall 2012 Unigene contigs (CDS) G.barbadense_HAU-NBI_v1.0_Udall2012-unigenes_cds
PlantGDB Gossypium unigenes G.barbadense_HAU-NBI_v1.0_PlantGDB_Gossypium
PlantGDB G. arboreum unigenes G.barbadense_HAU-NBI_v1.0_PlantGDB_arboreum
PlantGDB G. barbadense unigenes G.barbadense_HAU-NBI_v1.0_PlantGDB_barbadense
PlantGDB G. barbadense unigenes G.barbadense_HAU-NBI_v1.0_PlantGDB_barbadense
PlantGDB G. raimondii unigenes G.barbadense_HAU-NBI_v1.0_PlantGDB_raimondii
TIGR CGI unigenes G.barbadense_HAU-NBI_v1.0_TIGR_CGI
Protein Alignments
Protein alignments available below were performed by the CottonGen Team of the Main Bioinformatics Lab at WSU.  The alignment tool 'exonerate' was used to map protein sequences onto the G. barbadense NBI v1.0 genome. Only alignments with a percent identity of 90% were retained.
 
Protein Homology
Protein homology was performed by the CottonGen Team of Main Bioinformatics Lab at WSU. Proteins from the G. barbadense assembly were mapped against proteins from other genomes and databases using blastp with an e-value cutoff of 1e-6. Only the best match was kept. The available files are in Excel 2007 format.
 
Publication
Authors Daojun Yuan, Zhonghui Tang, Maojun Wang, Wenhui Gao, Lili Tu, Xin Jin, Lingling Chen, Yonghui He, Lin Zhang, Longfu Zhu, Yang Li, Qiqi Liang, Zhongxu Lin, Xiyan Yang, Nian Liu, Shuangxia Jin, Yang Lei, Yuanhao Ding, Guoliang Li, Xiaoan Ruan, Yijun Ruan & Xianlong Zhang
Title  The genome sequence of Sea-Island cotton (Gossypium barbadense) provides insights into the allopolyploidization and development of superior spinnable fibres
Journal Scientific Reports
Issue 5
doi 10.1038/srep17662
Year 2015
Functional Annotation

Functional annotation for Gossypium barbadense (AD2) Genome NBI Assembly v1.0 (Performed by NBI)

Interpro/Pfam/KEGG/Swissprot/TrEMBL/TAIR Annotation Gb.gene.annotation.info.txt.gz

 

Functional annotation for Gossypium barbadense (AD2) Genome NBI Assembly v1.0 (Performed by the CottonGen Team of the Main Bioinformatics Lab at WSU.)

Interpro Analysis G.barbadense_NBI_v1.0_interpro.txt.gz
GO annotation G.barbadense_NBI_v1.0_genes2GO.txt.gz
IPR Terms G.barbadense_NBI_v1.0_genes2IPR.txt.gz
KEGG Orthologs G.barbadense_NBI_v1.0_KEGG.orthologs.txt.gz
KEGG Pathways G.barbadense_NBI_v1.0_KEGG.pathways.txt.gz
Downloads

All assembly and annotation files are available for download by selecting the desired data type in the left-hand "Resources" side bar.  Each data type page will provide a description of the available files and links to download.  Alternatively, you can browse all available files on the FTP repository