Ploidy mosaicism and allele-specific gene expression differences in the allopolyploid Squalius alburnoides
نویسندگان
چکیده
منابع مشابه
Gene copy silencing and DNA methylation in natural and artificially produced allopolyploid fish.
Allelic silencing is an important mechanism for coping with gene dosage changes in polyploid organisms that is well known in allopolyploid plants. Only recently, it was shown in the allotriploid fish Squalius alburnoides that this process also occurs in vertebrates. However, it is still unknown whether this silencing mechanism is common to other allopolyploid fish, and which mechanisms might be...
متن کاملGene expression regulation and lineage evolution: the North and South tale of the hybrid polyploid Squalius alburnoides complex.
The evolution of hybrid polyploid vertebrates, their viability and their perpetuation over evolutionary time have always been questions of great interest. However, little is known about the impact of hybridization and polyploidization on the regulatory networks that guarantee the appropriate quantitative and qualitative gene expression programme. The Squalius alburnoides complex of hybrid fish ...
متن کاملAllele-specific gene expression uncovered.
Genetic variation in populations can result in variation in levels of gene expression but the extent to which this occurs has been unclear. In this article, recent studies of allele-specific expression among autosomal non-imprinted genes are reviewed. These new data provide evidence that differential expression is relatively common and that allelic differences are heritable and can be highly co...
متن کاملMolecular insights on the taxonomic position of the paternal ancestor of the Squalius alburnoides hybridogenetic complex.
Many hybrid Wsh lineages result from intrageneric crosses and are often asexual, being considered as “evolutionary dead-ends” (Vrijenhoek, 1998). This seems not to be true in the Squalius alburnoides (Iberian minnow) Steindachner 1866 complex. This complex, that seems to have originated in a cross between distant species, has a remarkable variability in ploidy level and genomic composition, inc...
متن کاملAllele-specific gene expression in a wild nonhuman primate population.
Natural populations hold enormous potential for evolutionary genetic studies, especially when phenotypic, genetic and environmental data are all available on the same individuals. However, untangling the genotype-phenotype relationship in natural populations remains a major challenge. Here, we describe results of an investigation of one class of phenotype, allele-specific gene expression (ASGE)...
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ژورنال
عنوان ژورنال: BMC Genetics
سال: 2011
ISSN: 1471-2156
DOI: 10.1186/1471-2156-12-101