Functional & Integrative Genomics

, Volume 11, Issue 1, pp 103–110 | Cite as

A nonsense mutation in a putative sulphate transporter gene results in low phytic acid in barley

  • Hongxia Ye
  • Xiao-Qi Zhang
  • Sue Broughton
  • Sharon Westcott
  • Dianxing WuEmail author
  • Reg Lance
  • Chengdao LiEmail author
Original Paper


Low phytic acid grains can provide a solution to dietary micronutrient deficiency and environmental pollution. A low phytic acid 1-1 (lpa1-1) barley mutant was identified using forward genetics and the mutant gene was mapped to chromosome 2HL. Comparative genomic analysis revealed that the lpa1-1 gene was located in the syntenic region of the rice Os-lpa-MH86-1 gene on chromosome 4. The gene ortholog of rice Os-lpa-MH86-1 (designated as HvST) was isolated from barley using polymerase chain reaction and mapped to chromosome 2HL in a doubled haploid population of Clipper×Sahara. The results demonstrate the collinearity between the rice Os-lpa-MH86-1 gene and the barley lpa1-1 region. Sequence analysis of HvST revealed a single base pair substitution (C→T transition) in the last exon of the gene in lpa1-1 (M422), which resulted in a nonsense mutation. These results will facilitate our understanding of the molecular mechanisms controlling the low phytic acid phenotype and assist in the development of a diagnostic marker for the selection of the lpa1-1 gene in barley.


Comparative mapping Candidate gene Rice Barley HvST 



This project is supported by the Australian Grains Research & Development Corporation, the Chinese Ministry of Agriculture (2008ZX08001-006, 2010-S26), Research Contract of International Atomic Energy Agency (CPR15422), and Natural Science Foundation of China (30828023).


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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Hongxia Ye
    • 1
    • 2
    • 4
  • Xiao-Qi Zhang
    • 3
  • Sue Broughton
    • 2
  • Sharon Westcott
    • 2
  • Dianxing Wu
    • 1
    Email author
  • Reg Lance
    • 2
  • Chengdao Li
    • 2
    • 3
    Email author
  1. 1.State Key Lab of Rice Biology and Key Lab of the Ministry of Agriculture for Nuclear–Agricultural SciencesZhejiang UniversityHangzhouPeople’s Republic of China
  2. 2.Department of Agriculture and FoodGovernment of Western AustraliaSouth PerthAustralia
  3. 3.The State Agricultural Biotechnology CentreMurdoch UniversityPerthAustralia
  4. 4.Huzhou Academy of Agricultural SciencesHuzhouPeople’s Republic of China

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