| Title |
Comparative transcriptome analysis reveals whole-genome duplications and gene selection patterns in cultivated and wild Chrysanthemum species
|
|---|---|
| Published in |
Plant Molecular Biology, October 2017
|
| DOI | 10.1007/s11103-017-0663-z |
| Pubmed ID | |
| Authors |
So Youn Won, Soo-Jin Kwon, Tae-Ho Lee, Jae-A Jung, Jung Sun Kim, Sang-Ho Kang, Seong-Han Sohn |
| Abstract |
Comparative transcriptome analysis of wild and cultivated chrysanthemums provides valuable genomic resources and helps uncover common and divergent patterns of genome and gene evolution in these species. Plants are unique in that they employ polyploidy (or whole-genome duplication, WGD) as a key process for speciation and evolution. The Chrysanthemum genus is closely associated with hybridization and polyploidization, with Chrysanthemum species exhibiting diverse ploidy levels. The commercially important species, C. morifolium is an allohexaploid plant that is thought to have originated via the hybridization of several Chrysanthemum species, but the genomic and molecular evolutionary mechanisms remain poorly understood. In the present study, we sequenced and compared the transcriptomes of C. morifolium and the wild Korean diploid species, C. boreale. De novo transcriptome assembly revealed 11,318 genes in C. morifolium and 10,961 genes in C. boreale, whose functions were annotated by homology searches. An analysis of synonymous substitution rates (Ks) of paralogous and orthologous genes suggested that the two Chrysanthemum species commonly experienced the Asteraceae paleopolyploidization and recent genome duplication or triplication before the divergence of these species. Intriguingly, C. boreale probably underwent rapid diploidization, with a reduction in chromosome number, whereas C. morifolium maintained the original chromosome number. Analysis of the ratios of non-synonymous to synonymous nucleotide substitutions (Ka/Ks) between orthologous gene pairs indicated that 107 genes experienced positive selection, which may have been crucial for the adaptation, domestication, and speciation of Chrysanthemum. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 25% |
| Unknown | 3 | 75% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 4 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 30 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 30 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 9 | 30% |
| Researcher | 5 | 17% |
| Student > Master | 5 | 17% |
| Student > Bachelor | 1 | 3% |
| Lecturer > Senior Lecturer | 1 | 3% |
| Other | 2 | 7% |
| Unknown | 7 | 23% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 13 | 43% |
| Biochemistry, Genetics and Molecular Biology | 7 | 23% |
| Environmental Science | 1 | 3% |
| Chemistry | 1 | 3% |
| Unknown | 8 | 27% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 October 2017.
All research outputs
#14,366,847
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Outputs from Plant Molecular Biology
#2,249
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Outputs of similar age
#181,760
of 327,202 outputs
Outputs of similar age from Plant Molecular Biology
#10
of 31 outputs
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