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epifagus virginiana/nicotina
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8 resultados
Expansion of the IR in the chloroplast genomes of buckwheat species is due to incorporation of an SSC sequence that could be mediated by an inversion.
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The chloroplast genomes in buckwheat species contain large inverted repeats which are at least 4 kbp longer than the majority of those in land plants. The length of the buckwheat inverted repeats was attributable to an additional region located adjacent to the borders of the small single-copy
Transcription, splicing and editing of plastid RNAs in the nonphotosynthetic plant Epifagus virginiana.
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Expression of the vestigial plastid genome of the nonphotosynthetic, parasitic flowering plant Epifagus virginiana was examined by northern analysis and by characterization of cDNAs. Probes for each of 12 plastid genes tested hybridized to all lanes of northern blots containing total RNA prepared
Small single-copy region of plastid DNA in the non-photosynthetic angiosperm Epifagus virginiana contains only two genes. Differences among dicots, monocots and bryophytes in gene organization at a non-bioenergetic locus.
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We have determined the nucleotide sequence of a 7 kb (1 kb = 10(3) base-pairs) region that includes the entire small single-copy region (SSC) of the plastid genome of Epifagus virginiana, a non-photosynthetic, parasitic flowering plant. The SSC (4.8 kb) is considerably smaller than those of
Structure and evolution of the largest chloroplast gene (ORF2280): internal plasticity and multiple gene loss during angiosperm evolution.
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We have determined the nucleotide sequence of the Pelargonium x hortorum ORF2280 homolog, the largest gene in the plastid genome of most land plants, and compared it to published homologs from Nicotiana tabacum, Epifagus virginiana, Spinacia oleracea, and Marchantia polymorpha. Multiple alignment of
Evolution of the plastid ribosomal RNA operon in a nongreen parasitic plant: accelerated sequence evolution, altered promoter structure, and tRNA pseudogenes.
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The nucleotide sequence of a 7.4 kb region containing the entire plastid ribosomal RNA operon of the nongreen parasitic plant Epifagus virginiana has been determined. Analysis of the sequence indicates that all four rRNA genes are intact and almost certainly functional. In contrast, the split genes
On the identification of group II introns in nucleotide sequence data.
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Four different consensus sequences (GTI, group II identifiers) have been derived from domains V of known group II introns and are used as query input sequences for sensitive database screenings with the FASTA and LFASTA programs. The set of four GTI sequences can identify all domains V of the 96
Plastid translation and transcription genes in a non-photosynthetic plant: intact, missing and pseudo genes.
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The non-photosynthetic, parasitic flowering plant Epifagus virginiana has recently been shown to contain a grossly reduced plastid genome that has lost many photosynthetic and chloro-respiratory genes. We have cloned and sequenced a 3.9 kb domain of plastid DNA from Epifagus to investigate the
Rapid evolution of the plastid translational apparatus in a nonphotosynthetic plant: loss or accelerated sequence evolution of tRNA and ribosomal protein genes.
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The vestigial plastid genome of Epifagus virginiana (beechdrops), a nonphotosynthetic parasitic flowering plant, is functional but lacks six ribosomal protein and 13 tRNA genes found in the chloroplast DNAs of photosynthetic flowering plants. Import of nuclear gene products is hypothesized to
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