Detailed Information on Publication Record
2012
Inferring species networks from gene trees in high-polyploid North American and Hawaiian violets (Viola, Violaceae)
MARCUSSEN, Thomas, Kjetill S. JAKOBSEN, Jiří DANIHELKA, Harvey E. BALLARD, Kim BLAXLAND et. al.Basic information
Original name
Inferring species networks from gene trees in high-polyploid North American and Hawaiian violets (Viola, Violaceae)
Name in Czech
Rekonstrukce retikulárních evolučních vztahů polyploidních violek (Viola, Violaceae) Severní Ameriky a Havajských ostrovů na základě genových dendrogramů
Authors
MARCUSSEN, Thomas (578 Norway, guarantor), Kjetill S. JAKOBSEN (578 Norway), Jiří DANIHELKA (203 Czech Republic, belonging to the institution), Harvey E. BALLARD (840 United States of America), Kim BLAXLAND (840 United States of America), Anne K. BRYSTING (578 Norway) and Bengt OXELMAN (752 Sweden)
Edition
Systematic Biology, Oxford University Press, 2012, 1063-5157
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 12.169
RIV identification code
RIV/00216224:14310/12:00059751
Organization unit
Faculty of Science
UT WoS
000299195700008
Keywords in English
Allopolyploidy; BEAST; homoeolog loss; low-copy nuclear gene; PADRE; single-molecule PCR; species network; Viola
Tags
International impact, Reviewed
Změněno: 20/12/2012 17:27, Ing. Jiří Danihelka, Ph.D.
V originále
The phylogenies of allopolyploids take the shape of networks and cannot be adequately represented as bifurcating trees. Especially for high polyploids the signatures of gene homoeolog loss, deep coalescence, and polyploidy may become confounded, with the result that gene trees may be congruent with more than one species network. Herein, we obtained the most parsimonious species network by objective comparison of competing scenarios involving polyploidization and homoeolog loss in a high-polyploid lineage of violets (Viola, Violaceae) mostly or entirely restricted to North America, Central America, or Hawaii. We amplified homoeologs of the low-copy nuclear gene, glucose-6-phosphate isomerase (GPI), by single-molecule polymerase chain reaction (PCR)and the chloroplast trnL-F region by conventional PCR for 51 species and subspecies. Topological incongruence among GPI homoeolog subclades, owing to deep coalescence and two instances of putative loss (or lack of detection) of homoeologs, were reconciled by applying the maximum tree topology for each subclade. The most parsimonious species network and the fossil-based calibration of the homoeolog tree favored monophyly of the high polyploids, which has resulted from allodecaploidization 9–14 Ma, involving sympatric ancestors from the extant Viola sections Chamaemelanium (diploid), Plagiostigma (paleotetraploid), and Viola (paleotetraploid). Although two of the high-polyploid lineages (Boreali-Americanae, Pedatae) remained decaploid, recurrent polyploidization with tetraploids of section Plagiostigma within the last 5 Ma has resulted in two 14-ploid lineages (Mexicanae, Nosphinium) and one 18-ploid lineage (Langsdorffianae). This implies a more complex phylogenetic and biogeographic origin of the Hawaiian violets (Nosphinium) than that previously inferred from rDNA data and illustrates the necessity of considering polyploidy in phylogenetic and biogeographic reconstruction.
In Czech
Na základě analýzy jednotlivých homeologů jaderného genu syntetizující enzym glukózo-6-fosfát isomeráza u vysoce polyploidních druhů Viola ze Severní Ameriky a Havajských ostrovů se podařilo vysvětlit jejich evoluční původ. Ukazuje se, že na vzniku těchto vysoce ploidních druhů (2n = 10x, 14x, 18x), které mají pravděpodobně společného dekaploidního předka, se podílely druhy z dnes rozeznávaných sekcí Chamaemelanium (2x), Viola (4x) a Plagiostigma (4x).
Links
| LC06073, research and development project |
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| MSM0021622416, plan (intention) |
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