- Nuclear DNA content variation within the genus Taraxacum (Asteraceae)
Počet záznamů: 1  

Nuclear DNA content variation within the genus Taraxacum (Asteraceae)

  1. 1.
    SYSNO ASEP0027287
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevNuclear DNA content variation within the genus Taraxacum (Asteraceae)
    Překlad názvuRozdíly v obsahu nukleární DNK uvnitř r. Taraxacum (Asteraceae)
    Tvůrce(i) Záveský, L. (CZ)
    Jarolímová, Vlasta (BU-J)
    Štěpánek, Jan (BU-J) RID, ORCID
    Zdroj.dok.Folia Geobotanica. - : Springer - ISSN 1211-9520
    Roč. 40, - (2005), s. 91-104
    Poč.str.14 s.
    Jazyk dok.eng - angličtina
    Země vyd.CZ - Česká republika
    Klíč. slovaTaraxacum ; C-value ; genome size
    Vědní obor RIVEF - Botanika
    CEPGD206/03/H137 GA ČR - Grantová agentura ČR
    GA206/05/0970 GA ČR - Grantová agentura ČR
    CEZAV0Z60050516 - BU-J (2005-2011)
    UT WOS000227755500009
    AnotaceNuclear DNA content was estimated using flow cytometry in 13 sections represented by 18 species of the genus Taraxacum using propidium iodide as the DNA stain. Investigated plants represented diploid, triploid and tetraploid species from sections considered both primitive and advanced, i.e. Dioszegia, Piesis, Glacialia, Mongolica, Scariosa, Obovata, T. pyrenaicum group, T. sect. Coronata, Palustria, Taraxacum (= Crocea), Kashmirana, Ruderalia and Erythrosperma. Estimated nuclear 2C DNA content ranged from 1.74 pg in diploid T. linearisquameum (sect. Ruderalia) to 6.91 pg in tetraploid T. albidum (T. sect. Mongolica), demonstrating 3.97-fold variation. The lowest monoploid genome size 1Cx = 0.87 pg was recorded in T. linearisquameum (T. sect. Ruderalia) together with T. brachyglossum (T. sect. Erythrosperma), and the highest one (1.73 pg) was recorded in T. albidum (T. sect. Mongolica), giving 1.99-fold difference in the genus. No significant differences in genome size were observed within T. sect. Ruderalia, similarly no intraspecific variation was observed in T. paludosum (T. sect. Palustria) and T. serotinum (T. sect. Dioszegia). These results indicate a high intraspecific stability of the trait. Preliminary comparisons of genome size in species/sections considered to be close relatives were made. These data give a tentative additional evidence for the close phylogenetic relationship between sections Palustria and Piesis and against the close relationship between sections Piesis and Dioszegia.
    PracovištěBotanický ústav
    KontaktMartina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8
    Rok sběru2010
Počet záznamů: 1  

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