Characterization of Two New Plasmid DNAs Found in Mitochondria of Wild-type Neurospora Intermedia Strains
Overview
Authors
Affiliations
Mitochondria from two Neurospora intermedia strains (P4O5-Labelle and Fiji N6-6) were found to contain plasmid DNAs in addition to the standard mitochondrial DNA species. The plasmid DNAs consist of monomeric circles (4.1-4.3 kbp and 5.2-5.3 kbp for Labelle and Fiji, respectively) and oligomers in which monomers are organized as head-to-tail repeats. DNA-DNA hybridization experiments showed that the plasmids have no substantial sequence homology to mtDNA, to each other, or to a previously characterized mitochondrial plasmid from N. crassa strain Mauriceville-lc (Collins et al. Cell 24, 443-452, 1981). The intramitochondrial location of the plasmids was established by cell fractionation and nuclease protection experiments. In sexual crosses, the plasmids showed strict maternal inheritance, the same as Neurospora mitochondrial DNA. The plasmids may represent a novel class of mitochondrial genetic elements.
Circular plasmid DNAs from mitochondria of Sorghum bicolor.
Chase C, Pring D Plant Mol Biol. 2013; 5(5):303-11.
PMID: 24306922 DOI: 10.1007/BF00020628.
Extrachromosomal plasmid-like DNA in the obligate parasitic fungus Erysiphe graminis f. sp. hordei.
Giese H, Christiansen S, Jensen H Theor Appl Genet. 2013; 79(1):56-64.
PMID: 24226120 DOI: 10.1007/BF00223787.
Cloning vectors of mitochondrial origin for eukaryotes: A new concept in genetic engineering.
Esser K, Kuck U, Stahl U, Tudzynski P Curr Genet. 2013; 7(4):239-43.
PMID: 24173333 DOI: 10.1007/BF00376068.
Extrachromosomal genetics of Claviceps purpurea : I. Mitochondrial DNA and mitochondrial plasmids.
Tudzynski P, Duvell A, Esser K Curr Genet. 2013; 7(2):145-50.
PMID: 24173157 DOI: 10.1007/BF00365640.
Zagorski N Proc Natl Acad Sci U S A. 2006; 103(6):1669-71.
PMID: 16449389 PMC: 1413635. DOI: 10.1073/pnas.0508183103.