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Eukaryotes Genomes - SPIZELLOMYCES PUNCTATUSSpizellomyces punctatus is a fungus used in comparative studies
The mitochondrial genome
of S. punctatus is unusual in that it is divided into three
circular molecules; a large 58.8 kb molecule and two molecules of
approximately 1.2 kb. One of the smaller molecules codes for the
atp9 gene, whereas the other has no identifiable genes. Plant mitochondrial
genomes are commonly divided into several molecules, called subgenomic
mtDNAs, and this is the first report of a divided or segmented mitochondrial
genome in fungi. Little is known about how subgenomic molecules
are perpetuated in plants yet recombination between molecules can
rapidly reorganise gene order and appears to be responsible for
the generation of novel, chimeric genes.
Hierarchy Description:
References:
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