Genetic targeting of candidate genes for drought sensitive gene eibi1 of wild barley (Hordeum spontaneum)

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  • Chen Guoxiong
    Plant Genome Research Unit, National Institute of Agrobiological Sciences Extreme Stress Resistance and Biotechnology Laboratory, Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences
  • Pourkheirandish Mohammad
    Plant Genome Research Unit, National Institute of Agrobiological Sciences
  • Sameri Mohammad
    Plant Genome Research Unit, National Institute of Agrobiological Sciences
  • Wang Ning
    Plant Genome Research Unit, National Institute of Agrobiological Sciences
  • Nair Sudha
    Plant Genome Research Unit, National Institute of Agrobiological Sciences
  • Shi Yulan
    Extreme Stress Resistance and Biotechnology Laboratory, Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences
  • Li Chao
    Extreme Stress Resistance and Biotechnology Laboratory, Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences
  • Nevo Eviatar
    Institute of Evolution, University of Haifa
  • Komatsuda Takao
    Plant Genome Research Unit, National Institute of Agrobiological Sciences

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Abstract

Drought stress is one of the most severe abiotic stresses that cause the loss of crop yield. The cuticle protects the leaf from dehydration in the face of drought stress. The barley cuticle mutant eibi1 is highly drought sensitive. Here, we describe the fine-scale genetic mapping of the eibi1 locus, based on a cv. Morex × eibi1 F2 population of 1,682 individuals. Barley-rice synteny was exploited to identify markers for mapping and to identify candidate genes for Eibi1. The target segment of chromosome 3H is perfectly collinear with the equivalent region on rice chromosome 1. Marker enrichment delimited eibi1 to a 0.11 cM barley region defined by the interval BI958842–Os01g0176800*, which in rice consists of a 112.8 kbp segment. Gene prediction revealed that this rice segment harbours 16 genes. Of them, five (Os01g0177100, Os01g0177200, Os01g0177900, Os01g0178200 and Os01g0178400) were proposed as candidate genes of Eibi1.<br>

Journal

  • Breeding Science

    Breeding Science 59 (5), 637-644, 2009

    Japanese Society of Breeding

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