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Statements

Subject Item
n2:RIV%2F60077344%3A_____%2F14%3A00436717%21RIV15-GA0-60077344
rdf:type
skos:Concept n18:Vysledek
dcterms:description
We applied flow cytometry, karyotyping, and mitochondrial DNA sequencing to three sexual and five parthenogenetic Eastern-Alpine species of the jumping-bristletail genus Machilis to investigate whether (1) parthenogenesis originated once or multiply and (2) whether parthenogenesis is strictly associated with polyploidy. The mitochondrial phylogeny revealed that parthenogenesis evolved at least five times independently in this genus. One parthenogenetic species was exclusively triploid, while a second consisted of both diploid and triploid populations. The other parthenogenetic species and all sexual species were diploid. Our results thus indicate that polyploidy can co-occur with parthenogenesis, but that it was not mandatory for the emergence of parthenogenesis in Machilis. The haploid genome size decreased with elevation, and we therefore hypothesize that genome downsizing could have been crucial for the persistence of alpine Machilis species. We applied flow cytometry, karyotyping, and mitochondrial DNA sequencing to three sexual and five parthenogenetic Eastern-Alpine species of the jumping-bristletail genus Machilis to investigate whether (1) parthenogenesis originated once or multiply and (2) whether parthenogenesis is strictly associated with polyploidy. The mitochondrial phylogeny revealed that parthenogenesis evolved at least five times independently in this genus. One parthenogenetic species was exclusively triploid, while a second consisted of both diploid and triploid populations. The other parthenogenetic species and all sexual species were diploid. Our results thus indicate that polyploidy can co-occur with parthenogenesis, but that it was not mandatory for the emergence of parthenogenesis in Machilis. The haploid genome size decreased with elevation, and we therefore hypothesize that genome downsizing could have been crucial for the persistence of alpine Machilis species.
dcterms:title
Extensive variation in chromosome number and genome size in sexual and parthenogenetic species of the jumping-bristletail genus Machilis (Archaeognatha) Extensive variation in chromosome number and genome size in sexual and parthenogenetic species of the jumping-bristletail genus Machilis (Archaeognatha)
skos:prefLabel
Extensive variation in chromosome number and genome size in sexual and parthenogenetic species of the jumping-bristletail genus Machilis (Archaeognatha) Extensive variation in chromosome number and genome size in sexual and parthenogenetic species of the jumping-bristletail genus Machilis (Archaeognatha)
skos:notation
RIV/60077344:_____/14:00436717!RIV15-GA0-60077344
n3:aktivita
n15:I n15:P
n3:aktivity
I, P(GA14-22765S)
n3:cisloPeriodika
21
n3:dodaniDat
n6:2015
n3:domaciTvurceVysledku
n9:7468237
n3:druhVysledku
n16:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
16203
n3:idVysledku
RIV/60077344:_____/14:00436717
n3:jazykVysledku
n17:eng
n3:klicovaSlova
asexuality; chromosomal speciation; genome downsizing
n3:klicoveSlovo
n4:genome%20downsizing n4:asexuality n4:chromosomal%20speciation
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[0B74DBB621C9]
n3:nazevZdroje
Ecology and Evolution
n3:obor
n10:EB
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
7
n3:projekt
n12:GA14-22765S
n3:rokUplatneniVysledku
n6:2014
n3:svazekPeriodika
4
n3:tvurceVysledku
Marec, František Gassner, M. Schlick-Steiner, B. C. Dejaco, T. Schönswetter, P. Arthofer, W. Steiner, F. M.
n3:wos
000344752000007
s:issn
2045-7758
s:numberOfPages
13
n11:doi
10.1002/ece3.1264