Plant Systematics and Evolution

, Volume 249, Issue 1–2, pp 55–66 | Cite as

Origin and phylogeny of Oryza species with the CD genome based on multiple-gene sequence data



The CD genome species in the genus Oryza are endemic to Latin America, including O. alta, O. grandiglumis and O. latifolia. Origins and phylogenetic relationship of these species have long been in dispute and are still ambiguous due to their homogeneous genome type, similar morphological characteristics and overlapping distribution. In the present study, we sequenced two chloroplast fragments (matK and trnL-trnF) and portions of three nuclear genes (Adh1, Adh2 and GPA1) from sixteen accessions representing seven species with the C, CD, and E genomes, as well as one G genome species as the outgroup. Phylogenetic analyses using parsimony and distance methods strongly supported that the CD genome originated from a single hybridization event, and that the C genome species (O. officinalis or O. rhizomatis instead of O. eichingeri) served as the maternal parent while the E genome species (O. australiensis) was the paternal donor during the formation of CD genome. In addition, the consistent phylogenetic relationships among the CCDD species indicated that significant divergence existed between O. latifolia and the other two (O. alta and O. grandiglumis), which corroborated the suggestion of treating the latter two as a single species or as taxa within species.


Origin phylogeny Oryza CD genome mattrnL-trnAdh GPA


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Copyright information

© Springer-Verlag Wien 2004

Authors and Affiliations

  1. 1.Laboratory of Systematic and Evolutionary BotanyInstitute of Botany, Chinese Academy of SciencesBeijingChina
  2. 2.Department of BiologyQufu Normal UniverityQufuChina

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