Development of PCR-based codominant markers flanking the Alt3 gene in rye

  • Miftahudin
  • Scoles G
  • Gustafson J
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Abstract

Aluminum (Al) toxicity is considered to be a major problem for crop growth and production on acid soils. The ability of crops to overcome Al toxicity varies among crop species and cultivars. Rye (Secale cereale L.) is the most Al-tolerant species among the Triticeae. Our previous study showed that Al tolerance in a rye F6 recombinant inbred line (RIL) population was controlled by a single gene designated as the aluminum tolerance (Alt3) gene on chromosome 4RL. Based on the DNA sequence of a rice (Oryza sativa L.) BAC clone suspected to be syntenic to the Alt3 gene region, we developed two PCR-based codominant markers flanking the gene. These two markers, a sequence-tagged site (STS) marker and a cleaved amplified polymorphic sequence (CAPS) marker, each flanked the Alt3 gene at an approximate distance of 0.4 cM and can be used to facilitate high-resolution mapping of the gene. The markers might also be used for marker-assisted selection in rye or wheat (Triticum aestivum L.) breeding programs to obtain Al-tolerant lines and (or) cultivars.

Author-supplied keywords

  • al
  • al parmi les hordées
  • al varie selon l
  • aluminium
  • aluminum tolerance
  • caps
  • constitue un problème important
  • de l
  • des études antérieures réalisées
  • espèce et le cultivar
  • espèce la plus tolérante
  • est l
  • flanking marker
  • la capacité des plantes
  • la productivité des
  • la toxicité de l
  • le
  • par
  • plantes en sols acides
  • pour la croissance et
  • rice bac
  • rye
  • résumé
  • secale cereale l
  • seigle
  • sts
  • synteny
  • à l
  • à surmonter la toxicité

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Authors

  • Miftahudin

  • G J Scoles

  • J P Gustafson

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