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Plasmid-Associated Organelle Genome Evolution In Red Algae.
J Phycol
December 2018
Department of Biological Sciences, Sungkyunkwan University, Seobu-ro 2066, Jangan-gu, Suwon, 16419, Korea.
Integration of a pAL2-1 homologous mitochondrial plasmid associated with life span extension in Podospora anserina.
Fungal Genet Biol
July 2007
CNRS, Centre de Génétique Moléculaire, 1 Avenue de la terrasse, 91198 Gif-sur-Yvette cedex, France.
We isolated and characterized a novel spontaneous longevity mutant of Podospora anserina strain Wa32 carrying one of the pAL2-1 homologous mitochondrial plasmids. This mutant is at least ten fold longer-lived than the wild type, and is hence a formal suppressor of both the regular and the 'plasmid-based' senescence process. We show that the longevity trait is maternally inherited and coincides with the presence of a copy of the plasmid integrated in the 5' UTR of the mitochondrial Complex I genes nd2 and nd3.
View Article and Find Full Text PDFLinear mitochondrial plasmids of F. oxysporum are novel, telomere-like retroelements.
Mol Cell
August 1999
Department of Biological Sciences, Southern Methodist University, Dallas, Texas 75275-0376, USA.
Diverse types of linear RNA and DNA autonomously replicating genetic elements exist in prokaryotic and eukaryotic hosts, yet linear elements that replicate by reverse transcription have not been identified. Here, we report the sequence and organization of two linear mitochondrial plasmids of the fungal plant pathogen F. oxysporum and the characterization of a plasmid-associated reverse transcriptase activity.
View Article and Find Full Text PDFVirulent strains of Shigella flexneri invade HeLa cells with high efficiency. This crucial step in the pathogenic process is encoded by a 140-megadalton plasmid which induces phagocytosis of the bacteria by host cells. In this report we used pWR100, the virulence plasmid of S.
View Article and Find Full Text PDFThe survival and growth of Yersinia pestis cells within mouse peritoneal cavities and within mouse peritoneal macrophages maintained in vitro was examined. Two strains were used which differed only in that one (KIM) contained the 47-megadalton plasmid associated with virulence and the second (KIM1) lacked this plasmid. The KIM cells, but not the KIM1 cells, acquired some resistance to phagocytosis during growth at 37 degrees C which was not evident when cells were grown at 26 degrees C.
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