Genome expansion of Arabis alpina linked with retrotransposition and reduced symmetric DNA methylation
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چکیده
منابع مشابه
Demography and mating system shape the genome-wide impact of purifying selection in Arabis alpina.
Plant mating systems have profound effects on levels and structuring of genetic variation and can affect the impact of natural selection. Although theory predicts that intermediate outcrossing rates may allow plants to prevent accumulation of deleterious alleles, few studies have empirically tested this prediction using genomic data. Here, we study the effect of mating system on purifying selec...
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Understanding the genetic basis of adaptation in response to environmental variation is fundamental as adaptation plays a key role in the extension of ecological niches to marginal habitats and in ecological speciation. Based on the assumption that some genomic markers are correlated to environmental variables, we aimed to detect loci of ecological relevance in the alpine plant Arabis alpina L....
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DNA methylation of CpG dinucleotides is essential for mammalian development, X inactivation, genomic imprinting, and may also be involved in immobilization of transposons and the control of tissue-specific gene expression (Bird & Wolffe, 1999). The common theme in each of these processes is gene silencing. Therefore, gene silencing is a major biological consequence of DNA methylation. As such, ...
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ژورنال
عنوان ژورنال: Nature Plants
سال: 2015
ISSN: 2055-0278
DOI: 10.1038/nplants.2014.23