title: Influence of low-molecular-weight glutenin subunit genes at Glu-A3 locus on wheat sodium dodecyl sulfate sedimentation volume and solvent retention capacity value.
abstract: BACKGROUND
  To understand the effect of low-molecular-weight (LMW) glutenin alleles at the Glu-A3 locus on sodium dodecyl sulfate (SDS) sedimentation volume and solvent retention capacity (SRC) values, 244 accessions of Chinese wheat (Triticum aestivum L.) mini core collections were investigated. In this study the significant differences in wholemeal flour SDS sedimentation volume and SRC values associated with specific glutenin alleles at the Glu-A3 locus were explained.
  
  
  RESULTS
  Seven glutenin alleles at the Glu-A3 locus were confirmed by locus-specific polymerase chain reaction (PCR). SDS sedimentation volume and lactic acid SRC value were significantly affected by alleles Glu-A3b and Glu-A3g. Based on total average values, 28 varieties carrying Glu-A3b had significantly higher means of SDS sedimentation volume and lactic acid SRC value, whereas 19 varieties carrying Glu-A3g had significantly lower means. Alleles Glu-A3d and Glu-A3f significantly increased only SDS sedimentation volume and sucrose SRC value respectively. Correlation analysis showed that SDS sedimentation volume was uncorrelated with lactic acid SRC and sucrose SRC values.
  
  
  CONCLUSIONS
  The Glu-A3 LMW glutenin subunit could predict 12.8% of the variance in SDS sedimentation volume, 4.7% in lactic acid SRC and 6.4% in sucrose SRC.
authors.affiliation: College of Agronomy, Anhui Agricultural University, Hefei 230036, China.
authors.forename: Zhixia
authors.initials: Z
authors.lastname: Li
authors.affiliation: College of Agronomy, Anhui Agricultural University, Hefei 230036, China.|Key Laboratory of Wheat Biology and Genetic Improvement in Southern Yellow & Huai River Valley Wheat Zone, Ministry of Agriculture, Hefei 230036, China.
authors.forename: Hongqi
authors.initials: H
authors.lastname: Si
authors.affiliation: College of Agronomy, Anhui Agricultural University, Hefei 230036, China.
authors.forename: Yunxiang
authors.initials: Y
authors.lastname: Xia
authors.affiliation: College of Agronomy, Anhui Agricultural University, Hefei 230036, China.|Key Laboratory of Wheat Biology and Genetic Improvement in Southern Yellow & Huai River Valley Wheat Zone, Ministry of Agriculture, Hefei 230036, China.
authors.forename: Chuanxi
authors.initials: C
authors.lastname: Ma
mesh_terms: D000483:Alleles; D005433:Flour / Q000032:analysis; D005504:Food Analysis; D018506:Gene Expression Regulation, Plant / Q000502:physiology*; D005838:Genotype; D005983:Glutens / Q000737:chemistry* / Q000235:genetics* / Q000378:metabolism; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry*; D012997:Solvents; D014908:Triticum / Q000235:genetics / Q000378:metabolism*
chemical_list: D012997:Solvents; D012967:Sodium Dodecyl Sulfate; D005983:Glutens; C037302:glutenin
keywords: Glu-A3; SDS sedimentation; mini core collection; solvent retention capacity; wheat