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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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