Abiotic Stress Signal Network with Expression QTLs for Cold-Responsive Genes in Common Wheat

  • Julio C. M. Iehisa
  • Yoichi Motomura
  • Fuminori Kobayashi
  • Shigeo Takumi
Conference paper

Abstract

Low temperature causes serious losses in agricultural productivity of wheat. The short-term exposure of plants to low, nonfreezing temperatures leads to an increase in freezing tolerance. This adaptive process called as cold acclimation involves drastic changes in gene expression. A correlation between cold-responsive gene expression patterns and freezing tolerance has been reported in various studies. Natural variations in gene expression between accessions are considered more sensitive to molecular diversity than phenotypic differences. Quantitative trait loci (QTLs) controlling differences in transcript accumulation levels are generally called expression QTLs (eQTLs). Our eQTL analysis of five cold-responsive genes demonstrated to identify two major freezing tolerance loci using recombinant inbred lines of common wheat. The identified eQTLs are corresponding to previously identified QTL for freezing tolerance, and play important roles in development of freezing tolerance. Therefore, eQTL analysis is a powerful tool for genetic dissection of complex traits such as abiotic stress tolerance in common wheat.

Keywords

Common Wheat Cold Acclimation Freezing Tolerance Chinese Spring Cultivar Difference 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Julio C. M. Iehisa
    • 1
  • Yoichi Motomura
    • 1
  • Fuminori Kobayashi
    • 2
  • Shigeo Takumi
    • 1
  1. 1.Graduate School of Agricultural ScienceKobe UniversityKobeJapan
  2. 2.Plant Genome Research UnitNational Institute of Agrobiological SciencesIbarakiJapan

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