Plant Diversity ›› 2011, Vol. 33 ›› Issue (2): 201-208.DOI: 10.3724/SP.J.1143.2011.10183

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A Preliminary Study on Patterns of TE-gene Associations in Oryza (Poaceae) and Adaptive Significance

 FAN  Ya-Yu-1、2,   Gao-Li-Zhi-1   

  1. 1 Plant Germplasm and Genomics Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China;
    2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-10-24 Online:2011-04-25 Published:2011-01-05


Transposable elements (TEs) have been found to be significant fractions of eukaryotic genomes. Moreover, they make great contributions to the structure, function and evolution of host genomes and associated genes in particular. Starting from bioinformatics searches, this study investigated the distribution of two TE-gene associations in 94 strains belonging to 16 Oryza species through PCR and agarose gel electrophoresis. We found that TE-insertions in the gene LOC_Os02g26349 distributed in AA-genome species while TE inserted into the gene LOC_Os02g45130 in part of AA-genome species. The result is obviously in agreement with the phylogeny of AA-genome species. The observed patterns of TE-gene associations in Oryza species and the fixation of TE-insertions within populations of different geographic origins together imply adaptive significance of TEs in the evolution of their host genes and genomes.

Key words: Transposable element, Oryza, AA-genome group, Insertion

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