ArticleGenetics1998
A subset of conserved tRNA genes in plastid DNA of nongreen plants.
Article in Genetics, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed.
- Article
- Loss of plastidComputational and structural biotechnology journal · 2023Article
- Evolutionary differences in gene loss and pseudogenization among mycoheterotrophic orchids in the tribe Vanilleae (subfamily Vanilloideae).Frontiers in plant science · 2023Article
- Improving phylogenetic resolution of the Lamiales using the complete plastome sequences of six Penstemon species.PloS one · 2021Article
- Article
- Plastome of mycoheterotrophicPeerJ · 2019Article
- Characterization of the Chloroplast Genome Sequence ofMolecules (Basel, Switzerland) · 2018Article
- Mechanistic model of evolutionary rate variation en route to a nonphotosynthetic lifestyle in plants.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
- Detecting and Characterizing the Highly Divergent Plastid Genome of the Nonphotosynthetic Parasitic Plant Hydnora visseri (Hydnoraceae).Genome biology and evolution · 2016Article
- Plastome Evolution in Hemiparasitic Mistletoes.Genome biology and evolution · 2015Article
- Plastid genomics in horticultural species: importance and applications for plant population genetics, evolution, and biotechnology.Frontiers in plant science · 2015Review
- Mechanisms of functional and physical genome reduction in photosynthetic and nonphotosynthetic parasitic plants of the broomrape family.The Plant cell · 2013Article
- Rampant gene loss in the underground orchid Rhizanthella gardneri highlights evolutionary constraints on plastid genomes.Molecular biology and evolution · 2011Article
- The evolution of the plastid chromosome in land plants: gene content, gene order, gene function.Plant molecular biology · 2011Article
- Article
- On the brink of holoparasitism: plastome evolution in dwarf mistletoes (Arceuthobium, Viscaceae).Journal of molecular evolution · 2009Article
- From chloroplasts to "cryptic" plastids: evolution of plastid genomes in parasitic plants.Current genetics · 2008Review
- Complete plastid genome sequences suggest strong selection for retention of photosynthetic genes in the parasitic plant genus Cuscuta.BMC plant biology · 2007Article
- Complete DNA sequences of the plastid genomes of two parasitic flowering plant species, Cuscuta reflexa and Cuscuta gronovii.BMC plant biology · 2007Article
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The plastid genome of the nonphotosynthetic parasitic plant Epifagus virginiana contains only 17 of the 30 tRNA genes normally found in angiosperm plastid DNA. Although this is insufficient for translation, the genome is functional, so import of cytosolic tRNAs into plastids has been suggested. This raises the question of whether the tRNA genes that remain in E. virginiana plastid DNA are active or have just fortuitously escaped deletion. We report the sequences of 20 plastid tRNA loci from Orobanche minor, which shares a nonphotosynthetic ancestor with E. virginiana. The two species have 9 intact tRNA genes in common, the others being defunct in one or both species. The intron-containing trnLUAA gene is absent from E. virginiana, but it is intact, transcribed, and spliced in O. minor. The shared intact genes are better conserved than intergenic sequences, which indicates that these genes are being maintained by natural selection and, therefore, must be functional. For the most part, the tRNA species conserved in nonphotosynthetic plastids are also those that have never been found to be imported in plant mitochondria, which suggests that the same rules may govern tRNA import in the two organelles. A small photosynthesis gene, psbI, is still intact in O. minor, and computer simulations show that some small nonessential genes have an appreciable chance of escaping deletion.
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