Academic Journal
New evidence confirming the CD genomic constitutions of the tetraploid Avena species in the section Pachycarpa Baum
| العنوان: | New evidence confirming the CD genomic constitutions of the tetraploid Avena species in the section Pachycarpa Baum |
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| المؤلفون: | Yan, Honghai, Ren, Zichao, Deng, Di, Yang, Kehan, Yang, Chuang, Zhou, Pingping, Wight, Charlene P., Ren, Changzhong, Peng, Yuanying |
| المساهمون: | Jellen, Eric, National Natural Science Foundation of China, International Cooperation project of Sichuan Science and Technology, Jilin Scientific and Technological Development Program |
| المصدر: | PLOS ONE ; volume 16, issue 1, page e0240703 ; ISSN 1932-6203 |
| بيانات النشر: | Public Library of Science (PLoS) |
| سنة النشر: | 2021 |
| المجموعة: | PLOS Publications (via CrossRef) |
| الوصف: | The tetraploid Avena species in the section Pachycarpa Baum, including A . insularis , A . maroccana , and A . murphyi , are thought to be involved in the evolution of hexaploid oats; however, their genome designations are still being debated. Repetitive DNA sequences play an important role in genome structuring and evolution, so understanding the chromosomal organization and distribution of these sequences in Avena species could provide valuable information concerning genome evolution in this genus. In this study, the chromosomal organizations and distributions of six repetitive DNA sequences (including three SSR motifs (TTC, AAC, CAG), one 5S rRNA gene fragment, and two oat A and C genome specific repeats) were investigated using non-denaturing fluorescence in situ hybridization (ND-FISH) in the three tetraploid species mentioned above and in two hexaploid oat species. Preferential distribution of the SSRs in centromeric regions was seen in the A and D genomes, whereas few signals were detected in the C genomes. Some intergenomic translocations were observed in the tetraploids; such translocations were also detected between the C and D genomes in the hexaploids. These results provide robust evidence for the presence of the D genome in all three tetraploids, strongly suggesting that the genomic constitution of these species is DC and not AC, as had been thought previously. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1371/journal.pone.0240703 |
| الاتاحة: | http://dx.doi.org/10.1371/journal.pone.0240703 https://dx.plos.org/10.1371/journal.pone.0240703 |
| Rights: | http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.661657D0 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1371/journal.pone.0240703 |
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