Genome sequence of the cultivated cotton Gossypium arboreum
By Fuguang Li, Guangyi Fan, Kunbo Wang, Fengming Sun, You-lu Yuan, G. Song, Qin Li, Zhiying Ma, Cai-rui Lu, Changsong Zou and 21 more. Nature Genetics, 2014
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The complex allotetraploid nature of the cotton genome (AADD; 2n = 52) makes genetic, genomic and functional analyses extremely challenging. Here we sequenced and assembled the Gossypium arboreum (AA; 2n = 26) genome, a putative contributor of the A subgenome. A total of 193.6 Gb of clean sequence covering the genome by 112.6-fold was obtained by paired-end sequencing. We further anchored and oriented 90.4% of the assembly on 13 pseudochromosomes and found that 68.5% of the genome is occupied by repetitive DNA sequences. We predicted 41,330 protein-coding genes in G. arboreum. Two whole-genome duplications were shared by G. arboreum and Gossypium raimondii before speciation. Insertions of long terminal repeats in the past 5 million years are responsible for the twofold difference in the sizes of these genomes. Comparative transcriptome studies showed the key role of the nucleotide binding site (NBS)-encoding gene family in resistance to Verticillium dahliae and the involvement of ethylene in the development of cotton fiber cells.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/2c4857ff325e546bbc8d0372872325883774cb02
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Citations in the corpus
- Sequencing of allotetraploid cotton (Gossypium hirsutum L. acc. TM-1) provides a resource for fiber improvement (2015, background): “Consistent with asymmetric gene loss, there were significantly more disrupted genes in the A subgenome (2,425) than in the D subgenome (1,887) (P < 0.”