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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F13%3A10135359%21RIV14-GA0-11310___
rdf:type
skos:Concept n16:Vysledek
rdfs:seeAlso
http://onlinelibrary.wiley.com/doi/10.1111/boj.12027/abstract
dcterms:description
Abstract: With more than 160-fold variation, Orchidaceae are currently the most diverse angiosperm family with respect to the amount of nuclear DNA. This study provides first genome size estimates for approximately 50% of species currently recognized in subfamily Apostasioideae, which is sister to the other four orchid subfamilies. The estimated 1C-values range from 0.38pg in Apostasia nuda to 5.96pg in Neuwiedia zollingeri var. javanica, a nearly 16-fold range. The two genera show non-overlapping genome sizes, with those in Apostasia being distinctly smaller than those in Neuwiedia. In fact, most Apostasia spp. are at the lower end of the range of orchid C-values. Observed discontinuities in DNA amounts in genera most probably reflect interspecific variation in ploidy. In addition to ploidy heterogeneity in N.zollingeri var. javanica, intraspecific variation in genome size (up to 17.7%) was also detected in some species; this can be plausibly related to the incidence of different geographical variants or unrecognized taxonomic heterogeneity. The AT content varied from 62.6 to 66.0%, which is in the upper range recorded for angiosperms. The genome size data obtained in this study fill a major phylogenetic gap in Orchidaceae and show that (very) small genomes prevail in subfamily Apostasioideae.(c) 2013 The Linnean Society of London Abstract: With more than 160-fold variation, Orchidaceae are currently the most diverse angiosperm family with respect to the amount of nuclear DNA. This study provides first genome size estimates for approximately 50% of species currently recognized in subfamily Apostasioideae, which is sister to the other four orchid subfamilies. The estimated 1C-values range from 0.38pg in Apostasia nuda to 5.96pg in Neuwiedia zollingeri var. javanica, a nearly 16-fold range. The two genera show non-overlapping genome sizes, with those in Apostasia being distinctly smaller than those in Neuwiedia. In fact, most Apostasia spp. are at the lower end of the range of orchid C-values. Observed discontinuities in DNA amounts in genera most probably reflect interspecific variation in ploidy. In addition to ploidy heterogeneity in N.zollingeri var. javanica, intraspecific variation in genome size (up to 17.7%) was also detected in some species; this can be plausibly related to the incidence of different geographical variants or unrecognized taxonomic heterogeneity. The AT content varied from 62.6 to 66.0%, which is in the upper range recorded for angiosperms. The genome size data obtained in this study fill a major phylogenetic gap in Orchidaceae and show that (very) small genomes prevail in subfamily Apostasioideae.(c) 2013 The Linnean Society of London
dcterms:title
Genome size variation in Orchidaceae subfamily Apostasioideae: filling the phylogenetic gap Genome size variation in Orchidaceae subfamily Apostasioideae: filling the phylogenetic gap
skos:prefLabel
Genome size variation in Orchidaceae subfamily Apostasioideae: filling the phylogenetic gap Genome size variation in Orchidaceae subfamily Apostasioideae: filling the phylogenetic gap
skos:notation
RIV/00216208:11310/13:10135359!RIV14-GA0-11310___
n16:predkladatel
n17:orjk%3A11310
n3:aktivita
n4:I n4:S n4:P
n3:aktivity
I, P(EE2.3.30.0006), P(GAP506/12/1320), S
n3:cisloPeriodika
1
n3:dodaniDat
n15:2014
n3:domaciTvurceVysledku
n9:5164710 n9:4822528 n9:1252372 n9:9562656 n9:3399060
n3:druhVysledku
n11:J
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n21:predkladatel
n3:idSjednocenehoVysledku
76421
n3:idVysledku
RIV/00216208:11310/13:10135359
n3:jazykVysledku
n18:eng
n3:klicovaSlova
orchids; phylogeny; nuclear C-value; flow cytometry; DNA base content
n3:klicoveSlovo
n6:DNA%20base%20content n6:phylogeny n6:flow%20cytometry n6:nuclear%20C-value n6:orchids
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[C8E598B933C6]
n3:nazevZdroje
Botanical Journal of the Linnean Society
n3:obor
n19:EF
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
13
n3:projekt
n7:EE2.3.30.0006 n7:GAP506%2F12%2F1320
n3:rokUplatneniVysledku
n15:2013
n3:svazekPeriodika
172
n3:tvurceVysledku
Vrána, Jan Urfus, Tomáš Liu, Zhong-Jian Krejčíková, Jana Suda, Jan Schulte, Katharina Trávníček, Pavel Leitch, Ilija J. Lamb, Anthony Ponert, Jan Čurn, Vladislav Jersáková, Jana Kubátová, Barbora
n3:wos
000318072600004
s:issn
0024-4074
s:numberOfPages
11
n14:doi
10.1111/boj.12027
n12:organizacniJednotka
11310