التفاصيل البيبلوغرافية
| العنوان: |
Cytogenetic and genomic organization analyses of chloroplast DNA invasions in the nuclear genome of Asparagus officinalis L. provides signatures of evolutionary complexity and informativity in sex chromosome evolution |
| المؤلفون: |
Shu-Fen Li, Jia-Rong Li, Jin Wang, Ran Dong, Ke-Li Jia, Hong-Wei Zhu, Ning Li, Jin-Hong Yuan, Chuan-Liang Deng, Wu-Jun Gao |
| المصدر: |
BMC Plant Biology, Vol 19, Iss 1, Pp 1-13 (2019) |
| بيانات النشر: |
BMC, 2019. |
| سنة النشر: |
2019 |
| المجموعة: |
LCC:Botany |
| مصطلحات موضوعية: |
Chloroplast DNA, Asparagus officinalis, Male-specific region of Y chromosome (MSY), Nuclear integrants of plastid DNA (NUPTs), Sex chromosome, Botany, QK1-989 |
| الوصف: |
Abstract Background The transfer of chloroplast DNA into nuclear genome is a common process in plants. These transfers form nuclear integrants of plastid DNAs (NUPTs), which are thought to be driving forces in genome evolution, including sex chromosome evolution. In this study, NUPTs in the genome of a dioecious plant Asparagus officinalis L. were systematically analyzed, in order to investigate the characteristics of NUPTs in the nuclear genome and the relationship between NUPTs and sex chromosome evolution in this species. Results A total of 3155 NUPT insertions were detected, and they represented approximated 0.06% of the nuclear genome. About 45% of the NUPTs were organized in clusters. These clusters were derived from various evolutionary events. The Y chromosome contained the highest number and largest proportion of NUPTs, suggesting more accumulation of NUPTs on sex chromosomes. NUPTs were distributed widely in all of the chromosomes, and some regions preferred these insertions. The highest density of NUPTs was found in a 47 kb region in the Y chromosome; more than 75% of this region was occupied by NUPTs. Further cytogenetic and sequence alignment analysis revealed that this region was likely the centromeric region of the sex chromosomes. On the other hand, the male-specific region of the Y chromosome (MSY) and the adjacent regions did not have NUPT insertions. Conclusions These results indicated that NUPTs were involved in shaping the genome of A. officinalis through complicated process. NUPTs may play important roles in the centromere shaping of the sex chromosomes of A. officinalis, but were not implicated in MSY formation. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
1471-2229 |
| Relation: |
http://link.springer.com/article/10.1186/s12870-019-1975-8; https://doaj.org/toc/1471-2229 |
| DOI: |
10.1186/s12870-019-1975-8 |
| URL الوصول: |
https://doaj.org/article/57c54aef859640e098b61bfd0c24054f |
| رقم الانضمام: |
edsdoj.57c54aef859640e098b61bfd0c24054f |
| قاعدة البيانات: |
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