scholarly journals The role of S1-g allele from Oryza glaberrima in improving interspecific hybrid sterility between O. sativa and O. glaberrima

2010 ◽  
Vol 60 (4) ◽  
pp. 342-346 ◽  
Author(s):  
Xianneng Deng ◽  
Jiawu Zhou ◽  
Peng Xu ◽  
Jing Li ◽  
Fengyi Hu ◽  
...  
Keyword(s):  
Interspecific Hybrid ◽  
Hybrid Sterility ◽  
Oryza Glaberrima

scholarly journals Mapping of S56(t) responsible for interspecific hybrid sterility between Oryza sativa and Oryza glumaepatula

2018 ◽  
Vol 68 (2) ◽  
pp. 242-247 ◽  
Author(s):  
Yu Zhang ◽  
Jiawu Zhou ◽  
Jing Li ◽  
Ying Yang ◽  
Peng Xu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Interspecific Hybrid ◽  
Hybrid Sterility ◽  
Oryza Glumaepatula

Genetic dissection of a chromosomal region conferring hybrid sterility using multi-donors from Oryza glaberrima

Euphytica ◽  
2010 ◽  
Vol 175 (3) ◽  
pp. 395-407 ◽  
Author(s):  
Jiawu Zhou ◽  
Peng Xu ◽  
Xianneng Deng ◽  
Jing Li ◽  
Fengyi Hu ◽  
...  
Keyword(s):  
Chromosomal Region ◽  
Hybrid Sterility ◽  
Oryza Glaberrima ◽  
Genetic Dissection

scholarly journals The role of meiotic drive in hybrid male sterility

2010 ◽  
Vol 365 (1544) ◽  
pp. 1265-1272 ◽  
Author(s):  
Shannon R. McDermott ◽  
Mohamed A. F. Noor
Keyword(s):  
Male Sterility ◽  
Hybrid Sterility ◽  
Meiotic Drive ◽  
Mechanistic Explanation ◽  
Hybrid Progeny ◽  
Hybrid Male ◽  
Hybrid Male Sterility ◽  
Species Formation ◽  
Allelic Segregation

Meiotic drive causes the distortion of allelic segregation away from Mendelian expected ratios, often also reducing fecundity and favouring the evolution of drive suppressors. If different species evolve distinct drive-suppressor systems, then hybrid progeny may be sterile as a result of negative interactions of these systems' components. Although the hypothesis that meiotic drive may contribute to hybrid sterility, and thus species formation, fell out of favour early in the 1990s, recent results showing an association between drive and sterility have resurrected this previously controversial idea. Here, we review the different forms of meiotic drive and their possible roles in speciation. We discuss the recent empirical evidence for a link between drive and hybrid male sterility, also suggesting a possible mechanistic explanation for this link in the context of chromatin remodelling. Finally, we revisit the population genetics of drive that allow it to contribute to speciation.

scholarly journals Gene flow mediates the role of sex chromosome meiotic drive during complex speciation

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Colin D Meiklejohn ◽  
Emily L Landeen ◽  
Kathleen E Gordon ◽  
Thomas Rzatkiewicz ◽  
Sarah B Kingan ◽  
...  
Keyword(s):  
Gene Flow ◽  
Sex Chromosomes ◽  
Population Genomics ◽  
Sex Chromosome ◽  
Hybrid Sterility ◽  
Sequence Divergence ◽  
Meiotic Drive ◽  
Hybrid Male ◽  
Local Sequence

During speciation, sex chromosomes often accumulate interspecific genetic incompatibilities faster than the rest of the genome. The drive theory posits that sex chromosomes are susceptible to recurrent bouts of meiotic drive and suppression, causing the evolutionary build-up of divergent cryptic sex-linked drive systems and, incidentally, genetic incompatibilities. To assess the role of drive during speciation, we combine high-resolution genetic mapping of X-linked hybrid male sterility with population genomics analyses of divergence and recent gene flow between the fruitfly species, Drosophila mauritiana and D. simulans. Our findings reveal a high density of genetic incompatibilities and a corresponding dearth of gene flow on the X chromosome. Surprisingly, we find that a known drive element recently migrated between species and, rather than contributing to interspecific divergence, caused a strong reduction in local sequence divergence, undermining the evolution of hybrid sterility. Gene flow can therefore mediate the effects of selfish genetic elements during speciation.

scholarly journals When acting as a reproductive barrier for sympatric speciation, hybrid sterility can only be primary

2019 ◽  
Vol 128 (4) ◽  
pp. 779-788 ◽  
Author(s):  
Donald R Forsdyke
Keyword(s):  
Hybrid Sterility ◽  
Sympatric Speciation ◽  
The Other ◽  
Reproductive Barriers ◽  
Evolutionary Time ◽  
Hybrid Inviability ◽  
Prezygotic Isolation ◽  
Microscopic Scale ◽  
A New Species

Abstract Animal gametes unite to form a zygote that develops into an adult with gonads that, in turn, produce gametes. Interruption of this germinal cycle by prezygotic or postzygotic reproductive barriers can result in two cycles, each with the potential to evolve into a new species. When the speciation process is complete, members of each species are fully reproductively isolated from those of the other. During speciation a primary barrier may be supported and eventually superceded by a later-appearing secondary barrier. For those holding certain cases of prezygotic isolation to be primary (e.g. elephant cannot copulate with mouse), the onus is to show that they had not been preceded over evolutionary time by periods of postzygotic hybrid inviability (genically determined) or sterility (genically or chromosomally determined). Likewise, the onus is upon those holding cases of hybrid inviability to be primary (e.g. Dobzhansky–Muller epistatic incompatibilities) to show that they had not been preceded by periods, however brief, of hybrid sterility. The latter, when acting as a sympatric barrier causing reproductive isolation, can only be primary. In many cases, hybrid sterility may result from incompatibilities between parental chromosomes that attempt to pair during meiosis in the gonad of their offspring (Winge-Crowther-Bateson incompatibilities). While such incompatibilities have long been observed on a microscopic scale, there is growing evidence for a role of dispersed finer DNA sequence differences (i.e. in base k-mers).

scholarly journals Neutral alleles at hybrid sterility loci of Oryza glaberrima from AA genome relatives in Genus Oryza

2018 ◽  
Vol 68 (3) ◽  
pp. 343-351 ◽  
Author(s):  
Jing Li ◽  
Jiawu Zhou ◽  
Peng Xu ◽  
Xianneng Deng ◽  
Wei Deng ◽  
...  
Keyword(s):  
Hybrid Sterility ◽  
Oryza Glaberrima ◽  
Aa Genome

THE CHROMOSOMAL BASIS OF VIABILITY IN INTERSPECIFIC HYBRIDS BETWEEN DROSOPHILA ARIZONENSIS AND DROSOPHILA MOJAVENSIS

1981 ◽  
Vol 23 (1) ◽  
pp. 65-72 ◽  
Author(s):  
E. Zouros
Keyword(s):  
Hybrid Sterility ◽  
Introgressive Hybridization ◽  
Backcross Progeny ◽  
Interspecific Crosses ◽  
Drosophila Mojavensis ◽  
Pure Species ◽  
Ecological Barriers ◽  
Chromosomal Identification ◽  
Interspecific Crossing

The chromosomal effects on differences in viability among progeny from interspecific crosses was studied in the interfertile pair Drosophila arizonensis and Drosophila mojavensis. Interspecific crossing-over was avoided by crossing hybrid males to pure-species females, and chromosomal identification in backcross progeny was possible by means of electrophoretic markers. The main findings are as follows. One chromosome supresses viability when in the heterospecific state, this being mainly so when the rest of the genotype is predominantly of mojavensis type; the other chromosomes show occasional interspecific heterosis, but are neutral in the majority of cases; interactions are not significant, except in one pair of chromosomes within a mojavensis background; there is no correlation between numbers of heterospecific chromosomes and viability scores. It is concluded that hybrid and backcross progeny inviability is not a very potent mechanism for keeping these species apart. Should etiological and ecological barriers break down, introgressive hybridization is a real possibility. The findings are compared with those from studies concerning hybrid sterility and mating behavior in these two species. It is concluded that there is no common chromosomal basis for these phenomena. In particular, the role of interspecific inversions to speciation remains obscure.

scholarly journals Speciation by Symbiosis: the Microbiome and Behavior

mBio ◽  
2016 ◽  
Vol 7 (2) ◽  
Author(s):  
J. Dylan Shropshire ◽  
Seth R. Bordenstein
Keyword(s):  
Hybrid Sterility ◽  
Host Behavior ◽  
Origin Of Species ◽  
Behavioral Isolation ◽  
Microbial Symbionts ◽  
Microbial Symbiosis ◽  
And Behavior ◽  
Fundamental Units

ABSTRACT Species are fundamental units of comparison in biology. The newly discovered importance and ubiquity of host-associated microorganisms are now stimulating work on the roles that microbes can play in animal speciation. We previously synthesized the literature and advanced concepts of speciation by symbiosis with notable attention to hybrid sterility and lethality. Here, we review recent studies and relevant data on microbes as players in host behavior and behavioral isolation, emphasizing the patterns seen in these analyses and highlighting areas worthy of additional exploration. We conclude that the role of microbial symbionts in behavior and speciation is gaining exciting traction and that the holobiont and hologenome concepts afford an evolving intellectual framework to promote research and intellectual exchange between disciplines such as behavior, microbiology, genetics, symbiosis, and speciation. Given the increasing centrality of microbiology in macroscopic life, microbial symbiosis is arguably the most neglected aspect of animal and plant speciation, and studying it should yield a better understanding of the origin of species.

scholarly journals Interspecific Hybrid Sterility in Rice Is Mediated by OgTPR1 at the S1 Locus Encoding a Peptidase-like Protein

2017 ◽  
Vol 10 (8) ◽  
pp. 1137-1140 ◽  
Author(s):  
Yongyao Xie ◽  
Peng Xu ◽  
Jianle Huang ◽  
Shengjian Ma ◽  
Xianrong Xie ◽  
...  
Keyword(s):  
Interspecific Hybrid ◽  
Hybrid Sterility
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