Tandem repetitive Afa-family sequences from Leymus racemosus and Psathyrostachys juncea (Poaceae)

Kiyotaka Nagaki, Masahiro Kishii, Hisashi Tsujimoto, Tetsuo Sasakuma

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Tandem repetitive Afa-family sequences of 340 bp are known to occur in wheat and related species of tribe Triticeae. We isolated six and three Afa-family sequences from Leymus racemosus and Psathyrostachys juncea, respectively, both of which are perennial species. The sequences account for 0.5% and 0.2% of L. racemosus and P. juncea genomes, respectively, and using in situ hybridization were located in subtelomeric and interstitial regions of L. racemosus chromosomes. These sequences are clustered with those of Elymus trachycaulus in the phylogenetic tree. Our findings indicate that the Afa-family sequences have been amplified at least twice in the lineage of L. racemosus, P. juncea, and E. trachycaulus.

Original languageEnglish
Pages (from-to)1258-1260
Number of pages3
JournalGenome
Volume42
Issue number6
DOIs
Publication statusPublished - Jan 1 1999

Keywords

  • Afa-family sequences
  • Leymus
  • Psathyrostachys
  • Tandem repeat
  • Triticeae

ASJC Scopus subject areas

  • Biotechnology
  • Molecular Biology
  • Genetics

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