Počet záznamů: 1
Organization and evolution of two repetitive sequences, 18-24J and 12-13P, in the genome of Chenopodium (Amaranthaceae)
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SYSNO ASEP 0495174 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Organization and evolution of two repetitive sequences, 18-24J and 12-13P, in the genome of Chenopodium (Amaranthaceae) Tvůrce(i) Orzechowska, M. (PL)
Majka, M. (PL)
Weiss-Schneeweiss, H. (AT)
Kovařík, Aleš (BFU-R) RID, ORCID
Borowska-Zuchowska, N. (PL)
Kolano, B. (PL)Celkový počet autorů 6 Zdroj.dok. Genome. - : Canadian Science Publishing - ISSN 0831-2796
Roč. 61, č. 9 (2018), s. 643-652Poč.str. 10 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. CA - Kanada Klíč. slova ribosomal-rna genes ; dna-sequences ; chromosomal localization ; satellite dna ; plant genomes ; sugar-beet ; rdna loci ; quinoa ; wheat ; heterochromatin Vědní obor RIV EI - Biotechnologie a bionika Obor OECD Biochemistry and molecular biology CEP GBP501/12/G090 GA ČR - Grantová agentura ČR Institucionální podpora BFU-R - RVO:68081707 UT WOS 000444103900003 DOI 10.1139/gen-2018-0044 Anotace The abundance and chromosomal organization of two repetitive sequences named 12-13P and 18-24J were analyzed in 24 diploid and nine polyploid species of Chenopodium s.l., with special attention to Chenopodium s.s. Both sequences were predominantly present in species of Chenopodium s.s., however, differences in the amplification levels were observed among the species. The 12-13P repeat was highly amplified in all of the analyzed Eurasian species, whereas the American diploids showed a marked variation in the amplification levels. The 12-13P repeat contains a tandemly arranged 40 bp minisatellite element forming a large proportion of the genome of Chenopodium (up to 3.5%). FISH revealed its localization to the pericentromeric regions of the chromosomes. The chromosomal distribution of 12-13P delivered additional chromosomal marker for B-genome diploids. The 18-24J repeat showed a dispersed organization in all of the chromosomes of the analyzed diploid species and the Eurasian tetraploids. In the American allotetraploids (C. quinoa, C. berlandieri) and Eurasian allohexaploids (e.g., C. album) very intense hybridization signals of 18-24J were observed only on 18 chromosomes that belong to the B subgenome of these polyploids. Combined cytogenetic and molecular analyses suggests that reorganization of these two repeats accompanied the diversification and speciation of diploid (especially A genome) and polyploid species of Chenopodium s.s. Pracoviště Biofyzikální ústav Kontakt Jana Poláková, polakova@ibp.cz, Tel.: 541 517 244 Rok sběru 2019
Počet záznamů: 1