A Multipartite Mitochondrial Genome in the Potato Cyst Nematode Globodera pallida

A Multipartite Mitochondrial Genome in the Potato Cyst Nematode Globodera pallida

Miles R. Armstrong^a, Vivian C. Blok^a, and Mark S. Phillips^a
^a Department of Nematology, Scottish Crop Research Institute, Dundee, Scotland DD2 5DA

Corresponding author: Miles R. Armstrong, Nematology, Scottish Crop Research Institute, Invergowrie, Dundee, Scotland DD2 5DA., marmst{at}scri.sari.ac.uk (E-mail)

Communicating editor: I. GREENWALD

The mitochondrial genome (mtDNA) of the plant parasitic nematodeGlobodera pallida exists as a population of small, circularDNAs that, taken individually, are of insufficient length toencode the typical metazoan mitochondrial gene complement. Asfar as we are aware, this unusual structural organization isunique among higher metazoans, although interesting comparisonscan be made with the multipartite mitochondrial genome organizationsof plants and fungi. The variation in frequency between populationsdisplayed by some components of the mtDNA is likely to havemajor implications for the way in which mtDNA can be used inpopulation and evolutionary genetic studies of G. pallida.

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