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@article{726309,
author = {Lysák, Martin and Cheung, Kwok and Kitschke, Michaela and Bureš, Petr},
article_location = {USA},
article_number = {2},
keywords = {chromosomel painting; genome size; chromosomal evolution; paleopolyploidy},
language = {eng},
issn = {0032-0889},
journal = {Plant Physiology},
title = {Ancestral Chromosomal Blocks Are Triplicated in Brassiceae Species with Varying Chromosome Number and Genome Size},
url = {http://www.plantphysiol.org/content/plantphysiol/145/2/402.full.pdf},
volume = {145},
year = {2007}
}
TY - JOUR
ID - 726309
AU - Lysák, Martin - Cheung, Kwok - Kitschke, Michaela - Bureš, Petr
PY - 2007
TI - Ancestral Chromosomal Blocks Are Triplicated in Brassiceae Species with Varying Chromosome Number and Genome Size
JF - Plant Physiology
VL - 145
IS - 2
SP - 402-410
EP - 402-410
PB - American Society of Plant Physiologists
SN - 00320889
KW - chromosomel painting
KW - genome size
KW - chromosomal evolution
KW - paleopolyploidy
UR - http://www.plantphysiol.org/content/plantphysiol/145/2/402.full.pdf
N2 - Comparative painting analysis of block F of the crucifer Ancestral Karyotype (AK; n=8), consisting of 24 conserved genomic blocks, in 10 species traditionally treated as members of the tribe Brassiceae. Three homeologous copies of block F were identified per haploid chromosome complement in Brassiceae with 2n=14, 18, 20, 32, and 36. In high-polyploid Crambe maritima (2n=60), C. cordifolia (2n=120), and Vella pseudocytisus (2n=68), 6, 12, and 6 copies have been revealed, respectively. In subtribe Zillineae, two of the three homeologous regions were combined via a reciprocal translocation onto one chromosome. Altogether, these findings provide compelling evidence of an ancient hexaploidization event and corresponding whole-genome triplication shared by the tribe Brassiceae. Only two homeologous copies of block F suggest a whole-genome duplication but not the triplication event in Orychophragmus violaceus (2n=24), and confirm its phylogenetic position outside the tribe Brassiceae.
ER -
LYSÁK, Martin, Kwok CHEUNG, Michaela KITSCHKE a Petr BUREŠ. Ancestral Chromosomal Blocks Are Triplicated in Brassiceae Species with Varying Chromosome Number and Genome Size. \textit{Plant Physiology}. USA: American Society of Plant Physiologists, 2007, roč.~145, č.~2, s.~402-410. ISSN~0032-0889.
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