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تعداد نتایج: 157 فیلتر نتایج به سال:
Cotton (Gossypium spp.) is commonly grouped into eight diploid genomic groups, designated A-G and K, and one tetraploid genomic group, namely AD. To gain insight into the phylogeny of Gossypium and molecular evolution of the chloroplast genome duringdiversification, chloroplast genomes (cpDNA) from 6 D-genome and 2 G-genome species of Gossypium (G. armourianum D2-1, G. harknessii D2-2, G. david...
Polyploidy plays a major role in the evolution of angiosperms with multiple paleopolyploid events having been suggested making it plausible that all angiosperms have a polyploid event in their history. Polyploidy can arise by genome duplication within a species (i.e., autopolyploidy), or whole genome duplication coupled with hybridization (i.e., allopolyploidy). Penstemon subsection Saccanthera...
The disjunct distribution of forests in the Qinghai-Tibetan Plateau (QTP) and adjacent Helan Shan and Daqing Shan highlands provides an excellent model to examine vegetation shifts, glacial refugia and gene flow of key species in this complex landscape region in response to past climatic oscillations and human disturbance. In this study, we examined maternally inherited mitochondrial DNA (nad1 ...
Chloroplast gene expression relies on nucleus-encoded factors acting posttranscriptionally in a gene-specific manner. Among those, RNA stability factors bind to the 50UTR of their target RNAs to protect them from 50-30 exonucleases. By contrast, little was know, up to now, on the molecular events involved in the complex processing of chloroplast polycistronic transcripts. In this issue of The E...
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