High impact information on Oenothera

• The genes coding for NADH dehydrogenase subunit 5 (nad5) in mitochondria of the higher plants Oenothera and Arabidopsis are split into five exons that are located in three distant genomic regions [1].
• Transcripts of the NADH-dehydrogenase subunit 3 gene are differentially edited in Oenothera mitochondria [2].
• The deduced amino acid sequence of maize GF14 is more than 80% identical to Arabidopsis GF14 and Oenothera PHP-O, and is more than 60% identical to a class of mammalian brain proteins described as both protein kinase C inhibitors and activators of tyrosine and tryptophan hydroxylases [3].
• We have isolated and characterized cDNA clones of a gene family (P2) expressed in Oenothera organensis pollen [4].
• In bean, potato, and Oenothera plants, the C encoded at position 4 (C4) in the mitochondrial tRNA Phe GAA gene is converted into a U in the mature tRNA [5].

Biological context of Oenothera

• RNA editing in the cytochrome b locus of the higher plant Oenothera berteriana includes a U-to-C transition [6].
• RNA editing in trans-splicing intron sequences of nad2 mRNAs in Oenothera mitochondria [7].
• The Oenothera mitochondrial genome contains only a gene fragment for ribosomal protein S12 (rps12), while other plants encode a functional gene in the mitochondrion [8].
• RNA editing makes mistakes in plant mitochondria: editing loses sense in transcripts of a rps19 pseudogene and in creating stop codons in coxI and rps3 mRNAs of Oenothera [9].
• RNA editing in ATPase subunit 6 mRNAs in Oenothera mitochondria. A new termination codon shortens the reading frame by 35 amino acids [10].

Associations of Oenothera with chemical compounds

• Transcripts from the rps13 locus, which encodes ribosomal protein S13, in Oenothera and Daucus mitochondria are edited by several cytidine to uridine transitions in both plants [11].
• The Oenothera plastome mutator: effect of UV irradiation and nitroso-methyl urea on mutation frequencies [12].
• Chloroplast mutations induced by 9-aminoacridine hydrochloride are independent of the plastome mutator in Oenothera [13].
• Oenothera biennis Linn oil (OBLO, linoleic + gamma-linolenic), sunflower oil (linoleic), palm oil (PLO, oleic + linoleic), soybean oil (linoleic + alpha-linolenic), high-oleic safflower oil (oleic + linoleic), or mixed oil (linoleic + alpha-linolenic) was added to the diet at 200 g/kg (20% groups) [14].
• Anti-tumour potential of a gallic acid-containing phenolic fraction from Oenothera biennis [15].

Gene context of Oenothera

• Structure and expression of cytochrome f in an Oenothera plastome mutant [16].
• It has a similarity of 95.1% at the DNA level to the nad5 gene of Oenothera and the two respective proteins show an overall level of amino acid identity of 88.7% [17].
• Comparison of the wheat and Oenothera cox3 sequences gives ambiguous indications concerning the amino acid coded by the codon CGG [18].
• Rps3 and rpl16 genes do not overlap in Oenothera mitochondria: GTG as a potential translation initiation codon in plant mitochondria [19]?
• Similarly, deletion of sequence elements upstream of trnI, which have a possible ori function in Oenothera, did not show any effect in tobacco [20].

Analytical, diagnostic and therapeutic context of Oenothera

• Mitochondrial (mt) DNAs from several higher-plant species (Arabidopsis thaliana, Beta vulgaris, Brassica hirta, Chenopodium album, Oenothera berteriana, Zea mays) were separated by pulsed-field gel electrophoresis (PFGE) [21].
• In immunodiffusion experiments with a monospecific antiserum against rye ribulose-1,5-bisphosphate carboxylase, only extracts from wild-type Oenothera produced visible precipitation lines [22].

References