On the relative abundance of autopolyploids and allopolyploids.

Détails

ID Serval
serval:BIB_DF08CB714D4C
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Lettre (letter): communication adressée à l'éditeur.
Collection
Publications
Titre
On the relative abundance of autopolyploids and allopolyploids.
Périodique
New Phytologist
Auteur(s)
Barker M.S., Arrigo N., Baniaga A.E., Li Z., Levin D.A.
ISSN
1469-8137 (Electronic)
ISSN-L
0028-646X
Statut éditorial
Publié
Date de publication
2016
Peer-reviewed
Oui
Volume
210
Numéro
2
Pages
391-398
Langue
anglais
Résumé
The prevalence of autopolyploids in angiosperms has long been a subject of debate. Meurountzing (1936) and Darlington (1937) conclude d that autopolyploids were common and important evolutionary entities. However, Clausen et al. (1945) and Stebbins (1947) subsequently considered them rare, in part because the
criteria upon which interpretations of autopolyploidy were rendered were not rigorous. This position was reiterated by Grant (1981) decades later, although evidence was mounting that autopolyploid taxa might be important in natural populations (Lewis, 1980). As cytological and genetic data have accumulated, it has become increasingly apparent that the latter view is likely to be correct (Soltis et al., 2004b, 2007, 2010). However, it still appears that the majority of polyploids are allopolyploids (Parisod et al., 2010; Soltis et al., 2010), even though Ramsey & Schemske (1998, p. 467) conclude that 'the rate of autopolyploid formation may often be higher than the rate of allopol yploid formation.' In this letter we survey the literature to assess whether allopolyploids are indeed the prevailing cytotype in nature. Using our new estimates for the incidence of autopolyploidy and allopolyploidy, we discuss some of the evolutionary dynamics that may be driving their frequencies in nature. Finally, we suggest avenues for future research on polyploidy that build on our results and other recent progress in the field.
Mots-clé
allopolyploid, autopolyploid, evolutionary advantage, hybridization, lineage survival, population establishment, speciation
Pubmed
Web of science
Open Access
Oui
Création de la notice
13/10/2015 14:46
Dernière modification de la notice
20/08/2019 17:03
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