Journal of Molecular Evolution

, Volume 69, Issue 4, pp 372–385 | Cite as

Molecular Evolution of the mtDNA Encoded rps3 Gene Among Filamentous Ascomycetes Fungi with an Emphasis on the Ophiostomatoid Fungi

  • Jyothi Sethuraman
  • Anna Majer
  • Mahmood Iranpour
  • Georg Hausner


The mitochondrial ribosomal protein S3 (rps3) gene within the fungi is extremely diverse in location and organization, some versions of this gene have been incorporated into a group I intron, others appear to have gained large insertions, microsatellite expansions, or have been invaded by homing endonucleases. Among the ascomycetes fungi the group I intron encoded version of rps3 appears to have a rather complex evolutionary history including first the acquisition of rps3 by a group I intron (mL2449), the loss of the mL2499 intron and the establishment of rps3 as a free-standing gene, and the eventual loss of the intron derived version of rps3.


Ribosomal proteins Group I intron encoded ORFs Fungal mitochondrial genome Ophiostoma 



This research was supported by Discovery Grants from the Natural Sciences and Engineering Research Council of Canada to G. Hausner. We also would like to thank Dr. James Reid (University of Manitoba, Microbiology) for providing us with fungal cultures.


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Jyothi Sethuraman
    • 1
  • Anna Majer
    • 1
  • Mahmood Iranpour
    • 1
  • Georg Hausner
    • 1
  1. 1.Department of MicrobiologyUniversity of ManitobaWinnipegCanada

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