Selfish Genes and Plant Speciation

被引:13
作者
Agren, J. Arvid [1 ]
机构
[1] Univ Toronto, Dept Ecol & Evolutionary Biol, Toronto, ON M5S 3B2, Canada
关键词
Selfish genetic elements; Speciation; Bateson-Dobzhansky-Muller incompatibilities; Mating system; Molecular evolution; TRANSPOSABLE ELEMENTS; HYBRID DYSGENESIS; GENOME SIZE; DROSOPHILA-MELANOGASTER; ARABIDOPSIS-THALIANA; SMALL RNA; POPULATION-GENETICS; RECOMBINATION RATE; DNA METHYLATION; MALE-STERILITY;
D O I
10.1007/s11692-012-9216-1
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
A key to understand the process of speciation is to uncover the genetic basis of hybrid incompatibilities. Selfish genetic elements (SGEs), DNA sequences that can spread in a population despite being associated with a fitness cost to the individual organism, make up the largest component in many plant genomes, but their role in the genetics of speciation has long been controversial. However, the realization that many organisms have evolved a variety of suppressor mechanisms that reduce the deleterious effects of SGEs has spurred renewed interest in their importance for speciation. The relationship between SGEs and their suppressors often results in strong selection on at least two interacting loci and this arms race therefore creates a situation where SGEs may give rise to hybrid dysgenesis due to Bateson-Dobzhansky-Muller incompatibilities (BDMIs). Here, I argue that examples of SGEs underlying BDMIs may be particularly common among plants compared to other taxa and that a focus on loci involved in genetic conflicts may be especially useful for workers interested in the genetics of plant speciation. I first discuss why the frequent mating system shifts and hybridization events in plants make for a specifically dynamic relationship between SGEs and plant host genomes. I then review some recent empirical observations consistent with SGE-induced speciation in plants. Lastly, I suggest some future directions to test fully the utility of this perspective.
引用
收藏
页码:439 / 449
页数:11
相关论文
共 135 条
[1]   Co-evolution between transposable elements and their hosts: a major factor in genome size evolution? [J].
Agren, J. Arvid ;
Wright, Stephen I. .
CHROMOSOME RESEARCH, 2011, 19 (06) :777-786
[2]   Evolving genomic metaphors: A new look at the language of DNA [J].
Avise, JC .
SCIENCE, 2001, 294 (5540) :86-87
[3]   Transposases are the most abundant, most ubiquitous genes in nature [J].
Aziz, Ramy K. ;
Breitbart, Mya ;
Edwards, Robert A. .
NUCLEIC ACIDS RESEARCH, 2010, 38 (13) :4207-4217
[4]   Hybridization and genome size evolution:: timing and magnitude of nuclear DNA content increases in Helianthus homoploid hybrid species [J].
Baack, EJ ;
Whitney, KD ;
Rieseberg, LH .
NEW PHYTOLOGIST, 2005, 167 (02) :623-630
[5]   Speciation by monobrachial centric fusions: A test of the model using nuclear DNA sequences from the bat genus Rhogeessa [J].
Baird, Amy B. ;
Hillis, David M. ;
Patton, John C. ;
Bickham, John W. .
MOLECULAR PHYLOGENETICS AND EVOLUTION, 2009, 50 (02) :256-267
[6]   The Nuclear Component of a Cytonuclear Hybrid Incompatibility in Mimulus Maps to a Cluster of Pentatricopeptide Repeat Genes [J].
Barr, Camille M. ;
Fishman, Lila .
GENETICS, 2010, 184 (02) :455-U198
[7]   The evolution of plant sexual diversity [J].
Barrett, SCH .
NATURE REVIEWS GENETICS, 2002, 3 (04) :274-284
[8]  
Bateson W., 1909, DOI 10.1017/CBO9780511693953.007
[9]   Sex brings transposons and genomes into conflict [J].
Bestor, TH .
GENETICA, 1999, 107 (1-3) :289-295
[10]   Evolutionary dynamics of transposable elements in a small RNA world [J].
Blumenstiel, Justin P. .
TRENDS IN GENETICS, 2011, 27 (01) :23-31