Detailed Information on Publication Record
2009
The Nature Of Aberrant Chromosomes In Apomictic Boechera Accessions
DE JONG, Hans, Christiane KIEFER, Eric SCHRANZ, Terezie MANDÁKOVÁ, Martin LYSÁK et. al.Basic information
Original name
The Nature Of Aberrant Chromosomes In Apomictic Boechera Accessions
Name in Czech
Původ aberantních chromosomů u apomictického rodu Boechera
Authors
DE JONG, Hans (528 Netherlands), Christiane KIEFER (40 Austria), Eric SCHRANZ (840 United States of America), Terezie MANDÁKOVÁ (203 Czech Republic), Martin LYSÁK (203 Czech Republic, guarantor) and Marcus KOCH (40 Austria)
Edition
Plant & Animal Genomes XVII Conference, 2009
Other information
Language
English
Type of outcome
Konferenční abstrakt
Field of Study
Genetics and molecular biology
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
RIV identification code
RIV/00216224:14310/09:00028473
Organization unit
Faculty of Science
Keywords (in Czech)
Apomixe; chromosomová evoluce; genomové malování
Keywords in English
Apomixis; chromosome evolution; genome painting; heterochromatic chromosome
Změněno: 9/4/2010 14:06, prof. RNDr. Jiří Fajkus, CSc.
V originále
The only apomicts in the Brassicaceae family reported so far were found in the genus Boechera and occur at the diploid, triploid and tetraploid level. Among the diploids cytotypes with 14 and 15 chromosome complements were found showing a plethora of different forms in chromosome morphology. Chromosome painting with genomic DNA of sexual B. stricta and B. holboellii (or related species) suggests that homoeologous chromosome substitution is common in these apomicts producing accessions with different chromosomes from their putative sexual ancestors. All apomicts studies so far display one or two aberrant chromosomes: a highly heterochromatic chromosome (Het) in the 14 and 15 chromosome accessions and a strikingly small chromosome (Del) in the 15 chromosome accessions. Here we report the analysis of chromosome painting experiments using pooled BACs from gene blocks defined in the sexual B. stricta. Our data showed that the Het chromosome is related to linkage group 1 (LG 1) of B. stricta and that the Del chromosome is a translocation chromosome containing the distal end of the long arm of the Het chromosome. We also confirmed a previously demonstrated translocation in BH224 and trisomy for LG7 in one apomictic 15 chromosome cytotype. The consequences of our chromosome painting for understanding related reports are discussed.
In Czech
Jediným dosud popsaným apomiktickým rodem v čeledi Brassicaceae je rod Boechera, která zahrnuje diploidní, triploidní a tetraploidní cytotypy. U diploidního cytotypu byly nalezeny dva aberantní chromosomy - vysoce heterochromatinizovaný chromosom (Het) u rostlin se čtrnácti chromosomy a malý chromosom (Del) u rostlin s patnácti chromosomy. Původ těchto aberantních chromosomů byl studován pomocí metody chromosomálního paintingu.
Links
| IAA601630902, research and development project |
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| MSM0021622415, plan (intention) |
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