Development of IRAP- and REMAP-derived SCAR markers for marker-assisted selection of the stripe rust resistance gene Yr15 derived from wild emmer wheat

Babak Abdollahi Mandoulakani, Elitsur Yaniv, Ruslan Kalendar, Dina Raats, Harbans S. Bariana, Mohammad Reza Bihamta, Alan H. Schulman

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Key message: Yr15provides broad resistance to stripe rust, an important wheat disease. REMAP- and IRAP-derived co-dominant SCAR markers were developed and localizeYr15to a 1.2 cM interval. They are reliable across many cultivars.

Abstract: Stripe rust [Pucinia striiformis f.sp. tritici (Pst)] is one of the most important fungal diseases of wheat, found on all continents and in over 60 countries. Wild emmer wheat (Triticum dicoccoides), which is the tetraploid progenitor of durum wheat, is a valuable source of novel stripe rust resistance genes for wheat breeding. T. dicoccoides accession G25 carries Yr15 on chromosome 1BS. Yr15 confers resistance to virtually all tested Pst isolates; it is effective in durum and bread wheat introgressions and their derivatives. Retrotransposons generate polymorphic insertions, which can be scored as Mendelian markers using techniques such as REMAP and IRAP. Six REMAP- and IRAP-derived SCAR markers were mapped using 1,256 F2 plants derived from crosses of the susceptible T. durum accession D447 (DW1) with its resistant BC3F9 and BC3F10 (B9 and B10) near isogenic lines, which carried Yr15 introgressed from G25. The nearest markers segregated 0.1 cM proximally and 1.1 cM distally to Yr15. These markers were also mapped and validated at the same position in another 500 independent F2 plants derived from crosses of B9 and B10 with the susceptible cultivar Langdon (LDN). SC2700 and SC790, defining Yr15 on an interval of 1.2 cM, were found to be reliable and robust co-dominant markers in a wide range of wheat lines and cultivars with and without Yr15. These markers are useful tags in marker-assisted wheat breeding programs that aim to incorporate Yr15 into elite wheat lines and cultivars for durable and broad-spectrum resistance to stripe rust.

Original languageEnglish
Pages (from-to)211-219
Number of pages9
JournalTheoretical And Applied Genetics
Volume128
Issue number2
DOIs
Publication statusPublished - 2014
Externally publishedYes

ASJC Scopus subject areas

  • Biotechnology
  • Agronomy and Crop Science
  • Genetics

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