Ribosomal DNA evolution and gene conversion in Nicotiana rustica

0127062 - BFU-R 20033150 RIV GB eng J - Článek v odborném periodiku
Matyášek, Roman - Lim, K. Y. - Kovařík, Aleš - Leitch, A. R.
Ribosomal DNA evolution and gene conversion in Nicotiana rustica.
Heredity. Roč. 91, č. 3 (2003), s. 268-275. ISSN 0018-067X. E-ISSN 1365-2540
Grant CEP: GA ČR GA204/01/0313; GA ČR GA521/01/0037
Výzkumný záměr: CEZ:AV0Z5004920
Klíčová slova: allopolyploid * rDNA * gene conversion
Kód oboru RIV: BO - Biofyzika
Impakt faktor: 1.986, rok: 2003

Genomic in situ hybridisation was used to confirm that Nicotiana rustica (2n = 4x = 48) is an allotetraploid between N. paniculata ( 2n = 2x = 24, maternal P-genome donor) and N. undulata ( 2n = 2x = 24, paternal U-genome donor), their progenitors or species closely related to them. Fluorescent in situ hybridisation showed that N. paniculata has one 5S and two 18-5.8-26S rDNA loci whereas N. undulata has an additional 18-5.8-26S rDNA locus. N. rustica has the sum of the loci found in these putative parents.
Trvalý link: http://hdl.handle.net/11104/0025285