| Title |
Chromosome painting and comparative physical mapping of the sex chromosomes in Populus tomentosa and Populus deltoides
|
|---|---|
| Published in |
Chromosoma, March 2018
|
| DOI | 10.1007/s00412-018-0664-y |
| Pubmed ID | |
| Authors |
Haoyang Xin, Tao Zhang, Yonghua Han, Yufeng Wu, Jisen Shi, Mengli Xi, Jiming Jiang |
| Abstract |
Dioecious species accounted for 6% of all plant species, including a number of crops and economically important species, such as poplar. However, sex determination and sex chromosome evolution have been studied only in few dioecious species. In poplar, the sex-determining locus was mapped to chromosome 19. Interestingly, this locus was mapped to either a peritelomeric or a centromeric region among different poplar species. We developed an oligonucleotide (oligo)-based chromosome painting probe based on the sequence of chromosome 19 from Populus trichocarpa. We performed chromosome painting in P. tomentosa and P. deltoides. Surprisingly, the distal end on the short arm of chromosome 19, which corresponds to the location of the sex-determining locus reported in several species, was not painted in both species. Thus, the DNA sequences associated with this region have not been anchored to the current chromosome 19 pseudomolecule, which was confirmed by painting of somatic metaphase chromosome 19 of P. trichocarpa. Interestingly, the unpainted distal ends of the two chromosome 19 did not pair at the pachytene stage in 22-24% of the meiotic cells in the two species, suggest that these regions from the sex chromosomes have structurally diverged from each other, resulting in the reduced pairing frequency. These results shed light on divergence of a pair of young sex chromosomes in poplar. |
X Demographics
The data shown below were collected from the profiles of 7 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 14% |
| Belgium | 1 | 14% |
| Japan | 1 | 14% |
| Unknown | 4 | 57% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 4 | 57% |
| Scientists | 3 | 43% |
Mendeley readers
The data shown below were compiled from readership statistics for 31 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 31 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 13 | 42% |
| Student > Doctoral Student | 3 | 10% |
| Student > Master | 2 | 6% |
| Student > Bachelor | 1 | 3% |
| Professor | 1 | 3% |
| Other | 3 | 10% |
| Unknown | 8 | 26% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 11 | 35% |
| Biochemistry, Genetics and Molecular Biology | 10 | 32% |
| Physics and Astronomy | 1 | 3% |
| Unknown | 9 | 29% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. 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 16 March 2019.
All research outputs
#13,066,779
of 23,026,672 outputs
Outputs from Chromosoma
#510
of 761 outputs
Outputs of similar age
#161,789
of 332,626 outputs
Outputs of similar age from Chromosoma
#7
of 10 outputs
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