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Title: Genetic basis of mitochondrial sorting in cucumber

Author
item DEL-VALLE ECHEVARRIA, A - University Of Wisconsin
item AL-FAIFI, S - University Of Wisconsin
item CALDERON, C - University Of Wisconsin
item SANSEVERINO, W - Institute De Recerca I Tecnologia Agroalimentaries (IRTA)
item TORMO, M - Institute De Recerca I Tecnologia Agroalimentaries (IRTA)
item GARCIA-MAS, J - Institute De Recerca I Tecnologia Agroalimentaries (IRTA)
item Havey, Michael

Submitted to: Cucurbitaceae Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 6/15/2014
Publication Date: 10/15/2014
Citation: Del-Valle Echevarria, A., Al-Faifi, S., Calderon, C., Sanseverino, W., Tormo, M., Garcia-Mas, J., Havey, M.J. 2014. Genetic basis of mitochondrial sorting in cucumber. Cucurbitaceae Proceedings. p. A15.

Interpretive Summary:

Technical Abstract: Regeneration of cucumber (Cucumis sativus) from cell cultures produces plants with distinct mosaic (MSC) phenotypes, misshapen cotyledons and leaves, reduced fertility, and low seed germination. The MSC phenotypes are paternally transmitted and associated with deletions or under-representations of specific regions of their mitochondrial (mt) DNAs. A nuclear locus, Paternal Sorting of Mitochondria (Psm), conditions sorting to wild-type mitochondria in progenies when MSC plants are used as pollen parents. We mapped Psm to chromosome 3 of cucumber and identified a pentatricopeptide repeat (PPR) as a candidate gene controlling mitochondrial sorting in cucumber. This research demonstrates the usefulness of cucumber as a model plant to study nuclear-organellar interactions.