Reference genomes and transcriptomes of Nicotiana sylvestris and Nicotiana tomentosiformis
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چکیده
منابع مشابه
Elimination and rearrangement of parental rDNA in the allotetraploid Nicotiana tabacum.
Origin and rearrangement of ribosomal DNA repeats in natural allotetraploid Nicotiana tabacum are described. Comparative sequence analysis of the intergenic spacer (IGS) regions of Nicotiana tomentosiformis (the paternal diploid progenitor) and Nicotiana sylvestris (the maternal diploid progenitor) showed species-specific molecular features. These markers allowed us to trace the molecular evolu...
متن کاملTAS49--a dispersed repetitive sequence isolated from subtelomeric regions of Nicotiana tomentosiformis chromosomes.
We have isolated and characterized a new repetitive sequence, TAS49, from terminal restriction fragments of Nicotiana tomentosiformis genomic DNA by means of a modified vectorette approach. The TAS49 was found directly attached to telomeres of N. tabacum and one of its ancestors, N. tomentosiformis, and also at inner chromosome locations. No association with telomeres was detected neither in N....
متن کاملA distinct endogenous pararetrovirus family in Nicotiana tomentosiformis, a diploid progenitor of polyploid tobacco.
A distinct endogenous pararetrovirus (EPRV) family corresponding to a previously unknown virus has been identified in the genome of Nicotiana tomentosiformis, a diploid ancestor of allotetraploid tobacco (Nicotiana tabacum). The putative virus giving rise to N. tomentosiformis EPRVs (NtoEPRVs) is most similar to tobacco vein clearing virus, an episomal form of a normally silent EPRV family in N...
متن کاملNext generation sequencing reveals genome downsizing in allotetraploid Nicotiana tabacum, predominantly through the elimination of paternally derived repetitive DNAs.
We used next generation sequencing to characterize and compare the genomes of the recently derived allotetraploid, Nicotiana tabacum (<200,000 years old), with its diploid progenitors, Nicotiana sylvestris (maternal, S-genome donor), and Nicotiana tomentosiformis (paternal, T-genome donor). Analysis of 14,634 repetitive DNA sequences in the genomes of the progenitor species and N. tabacum revea...
متن کاملOrganization and expression of the mitochondrial genome in the Nicotiana sylvestris CMSII mutant.
Previous analyses suggested that the Nicotiana sylvestris CMSII mutant carried a large deletion in its mitochondrial genome. Here, we show by cosmid mapping that the deletion is 60 kb in length and contains several mitochondrial genes or ORFs, including the complex I nad7 gene. However, due to the presence of large duplications in the progenitor mitochondrial genome, the only unique gene that a...
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ژورنال
عنوان ژورنال: Genome Biology
سال: 2013
ISSN: 1474-760X
DOI: 10.1186/gb-2013-14-6-r60