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| Yun Li,Zong; Li Fu,Mei; Fang Hu,Fang; Feng Huang,Shu; Chun Song,Yun. |
| The ribosomal DNA (45S rDNA) behaviors during the cell cycle were analyzed on interphase nuclei, prophases, metaphases, pachytene chromosomes and extended DNA fibers in rice (Oryza,sativa ssp.indica cv.Guangluai No.4) by using high-resolution fluorescent in situ hybridization (FISH). The results show that 45S rDNA is located at the ends of short arms of chromosomes 9 and 10. But the signals are much more intense on chromosome 9 than on chromosome 10 in metaphase. Pachytene chromosome has rDNA signal arrays on chromosome 9. Different phases are described and discussed. These results indicate that the activity of rDNA at individual loci may also vary through the cell cycle in rice. On extended DNA fibers, 45S rDNA signals appear as strings of numerous red... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cell cycle; Fluorescent in situ hybridization (FISH); Ribosomal DNA (45S rDNA); Pachytene chromosomes; Indica rice. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100004 |
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