Multiple Origins and Nested Cycles of Hybridization Result in High Tetraploid Diversity in the Monocot Prospero

Frontiers in Plant Science
Tae-Soo JangHanna Weiss-Schneeweiss

Abstract

Polyploidy is a major driving force in angiosperm evolution, but our understanding of establishment and early diversification processes following allo- vs. auto-polyploidy is limited. An excellent system to address such questions is the monocot plant Prospero autumnale, as it comprises several genomically and chromosomally distinct diploid cytotypes and their auto- and allotetraploid derivatives. To infer origins and evolutionary trajectories of the tetraploids, we use genome size data, in situ hybridization with parental genomic DNAs and specific probes (satDNA, rDNAs), as well as molecular-phylogenetic analyses. Thus, we demonstrate that an astounding range of allotetraploid lineages has been formed recurrently by chromosomal re-patterning, interactions of chromosomally variable parental genomes and nested cycles of extensive hybridization, whereas autotetraploids have originated at least twice and are cytologically stable. During the recurrent formation and establishment across wide geographic areas hybridization in some populations could have inhibited lineage diversification and nascent speciation of such a hybrid swarm. However, cytotypes that became fixed in populations enhanced the potential for species diversification,...Continue Reading

References

Aug 1, 1994·Genome Génome / Conseil National De Recherches Canada·J Greilhuber, I Ebert
Oct 15, 2008·Systematic Biology·Alexandros StamatakisJacques Rougemont
Aug 5, 2009·Nature Reviews. Genetics·Yves Van de PeerAxel Meyer
Dec 24, 2009·The New Phytologist·S C Le ComberA R Leitch
Jan 1, 2009·American Journal of Botany·Douglas E SoltisPamela S Soltis
Jan 10, 2012·Proceedings of the National Academy of Sciences of the United States of America·Michael ChesterDouglas E Soltis
Apr 7, 2012·Current Opinion in Plant Biology·M Eric SchranzPatrick P Edger
Mar 23, 2013·The Plant Journal : for Cell and Molecular Biology·Simon Renny-ByfieldAndrew R Leitch
Jun 26, 2013·Cytogenetic and Genome Research·H Weiss-SchneeweissG M Schneeweiss
Oct 2, 2013·The Plant Cell·Terezie MandákováMartin A Lysak
May 2, 2015·Evolution; International Journal of Organic Evolution·Mario Vallejo-MarínJoshua R Puzey
Oct 7, 2015·The New Phytologist·Michael S BarkerDonald A Levin
May 29, 2016·American Journal of Botany·Douglas E SoltisPamela S Soltis
Jul 1, 1985·Evolution; International Journal of Organic Evolution·Joseph Felsenstein

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BETA
PCR
flow cytometry

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SeqState
PAUP
ff
MulTrees
AxioVision
raxmlGUI
Autoidiogram
GISH

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