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Rapid evolution of parental rDNA in a synthetic tobacco allotetraploid line

SYSNO ASEP	0127000
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Rapid evolution of parental rDNA in a synthetic tobacco allotetraploid line
Author(s)	Skalická, Kamila (BFU-R) Lim, K. Y. (GB) Matyášek, Roman (BFU-R)_ORCID Koukalová, Blažena (BFU-R) Leitch, A. R. (GB) Kovařík, Aleš (BFU-R)_{RID, ORCID}
Source Title	American Journal of Botany. - : Wiley - ISSN 0002-9122 Roč. 90, č. 7 (2003), s. 988-996
Number of pages	9 s.
Language	eng - English
Country	US - United States
Keywords	evolution ; gene conversion ; Nicotiana
Subject RIV	BO - Biophysics
R&D Projects	GA204/01/0313 GA ČR - Czech Science Foundation (CSF)
	GA521/01/0037 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z5004920 - BFU-R
Annotation	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.
Workplace	Institute of Biophysics
Contact	Jana Poláková, polakova@ibp.cz, Tel.: 541 517 244
Year of Publishing	2004

Number of the records: 1