Structural features of a wheat plastome as revealed by complete sequencing of chloroplast DNA

Y. Ogihara*, K. Isono, T. Kojima, A. Endo, M. Hanaoka, T. Shiina, T. Terachi, S. Utsugi, M. Murata, N. Mori, S. Takumi, K. Ikeo, Takashi Gojobori, R. Murai, K. Murai, Y. Matsuoka, Y. Ohnishi, H. Tajiri, K. Tsunewaki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

120 Scopus citations

Abstract

Structural features of the wheat plastome were clarified by comparison of the complete sequence of wheat chloroplast DNA with those of rice and maize chloroplast genomes. The wheat plastome consists of a 134,545-bp circular molecule with 20,703-bp inverted repeats and the same gene content as the rice and maize plastomes. However, some structural divergence was found even in the coding regions of genes. These alterations are due to illegitimate recombination between two short direct repeats and/or replication slippage. Overall comparison of chloroplast DNAs among the three cereals indicated the presence of some hot-spot regions for length mutations. Whereas the region with clustered tRNA genes and that downstream of rbcL showed divergence in a species-specific manner, the deletion patterns of ORFs in the inverted-repeat regions and the borders between the inverted repeats and the small single-copy region support the notion that wheat and rice are related more closely to each other than to maize.

Original languageEnglish (US)
Pages (from-to)740-746
Number of pages7
JournalMolecular Genetics and Genomics
Volume266
Issue number5
DOIs
StatePublished - Dec 1 2001

Keywords

  • Chinese Spring wheat
  • Chloroplast DNA
  • Complete sequence
  • Hypervariable region
  • Structure analysis

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

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