Rapid evolution of parental rDNA in a synthetic tobacco allotetraploid line

0127000 - BFU-R 20033083 RIV US eng J - Článek v odborném periodiku
Skalická, Kamila - Lim, K. Y. - Matyášek, Roman - Koukalová, Blažena - Leitch, A. R. - Kovařík, Aleš
Rapid evolution of parental rDNA in a synthetic tobacco allotetraploid line.
American Journal of Botany. Roč. 90, č. 7 (2003), s. 988-996. ISSN 0002-9122. E-ISSN 1537-2197
Grant CEP: GA ČR GA204/01/0313; GA ČR GA521/01/0037
Výzkumný záměr: CEZ:AV0Z5004920
Klíčová slova: evolution * gene conversion * Nicotiana
Kód oboru RIV: BO - Biofyzika
Impakt faktor: 2.373, rok: 2003

In this paper we have shown amplification of rDNA variants derived from N. tomentosiformis parent in the synthetic tabacco Th37, 4n (N. sylvestris x N. tomentosiformis) line. Amplification was correlated with occurance of a novel rDNA locus on N. tomentosiformis-derived chromosome T4. Combined with an analysis of tobacco cultivars, the data indicate that an initial burst rDNA evolution associated with allopolyploidy was followed by a slower process that led towards reduced complexity and a decreased number of rDNA variants.
Trvalý link: http://hdl.handle.net/11104/0025225