Identification of parental genomes and genomic organization in Aster microcephalus var. ovatus
| العنوان: | Identification of parental genomes and genomic organization in Aster microcephalus var. ovatus |
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| المؤلفون: | Hideyuki Matoba, Akiko Soejima, Yoshikazu Hoshi |
| المصدر: | Journal of Plant Research. 120:585-593 |
| بيانات النشر: | Springer Science and Business Media LLC, 2007. |
| سنة النشر: | 2007 |
| مصطلحات موضوعية: | medicine.medical_specialty, DNA, Plant, Retroelements, Aster Plant, Plant Science, Genome, Chromosomes, Plant, Polyploidy, medicine, Genome size, In Situ Hybridization, Fluorescence, Phylogeny, Genetics, biology, fungi, Cytogenetics, food and beverages, Chromosome, Karyotype, Microcephalus, Flow Cytometry, biology.organism_classification, Karyotyping, Ploidy, Genome, Plant |
| الوصف: | The karyotype of diploid Aster iinumae is morphologically similar to that of diploid Aster ageratoides var. ageratoides, however, its chromosome size is apparently smaller (S-type chromosomes versus L-type chromosomes, respectively). The hybrid origin of tetraploid Aster microcephalus var. ovatus (LS-type chromosomes) has previously been suggested by cytogenetics and chloroplast DNA (cp DNA) data. The cp DNA phylogeny also implies that the S-type chromosome is apomorphic, which means that genome size reduction occurred on the evolutionary way to A. iinumae. In this study, we have demonstrated that the chromosome size difference does not depend on the intensity of chromosome condensation but on the DNA content. The simultaneous genomic in situ hybridization (GISH) results show the similarity between S-type chromosomes of A. iinumae and A. microcephalus var. ovatus, and between L-type chromosomes of A. ageratoides and A. microcephalus var. ovatus, which provide additional evidence for A. microcephalus var. ovatus being a tetraploid amphidiploid produced by hybridization between S-type chromosomes and L-type chromosomes. The distribution patterns of Ty1-copia-like retrotransposons were similar in L- and S-type chromosomes. The copies of this retrotransposon dispersed uniformly on all chromosomes, and it is not yet apparent how the Ty1-copia-like retrotransposon affects the size difference between them. |
| تدمد: | 1618-0860 0918-9440 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e37e529b31465af4c649e06720c5ab29 https://doi.org/10.1007/s10265-007-0101-4 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....e37e529b31465af4c649e06720c5ab29 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 16180860 09189440 |
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