Variation in sorghum starch synthesis genes associated with differences in starch phenotype

Hill, Helen, Lee, L. Slade and Henry, Robert J. (2012) Variation in sorghum starch synthesis genes associated with differences in starch phenotype. Food Chemistry, 131 1: 175-183.


Author Hill, Helen
Lee, L. Slade
Henry, Robert J.
Title Variation in sorghum starch synthesis genes associated with differences in starch phenotype
Journal name Food Chemistry   Check publisher's open access policy
ISSN 0308-8146
1873-7072
Publication date 2012-03-01
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.foodchem.2011.08.057
Volume 131
Issue 1
Start page 175
End page 183
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract The properties of sorghum starch may influence digestibility and nutritional value in animal and human diets and the processing performance of starch in industrial applications. The variation in grain composition and starch physiochemical properties was evaluated. The DNA sequence of three starch synthesis genes was surveyed and an association approach used to investigate the genetic basis of phenotypic differences in sorghum. Single nucleotide polymorphisms (SNPs) in SSIIa distinguish three haplotypes that were associated with significant differences in gelatinisation temperature and thousand-kernel weight. SSIIa haplotype (H1) accessions had a significantly lower mean gelatinisation temperature of 80.5 °C compared to 87.6 °C and 91.5 °C for H2 and H3, respectively. Polymorphisms in SBEIIb were associated with a 12 °C difference in gelatinisation temperature and GBSSI polymorphisms with total starch content. The SNPs identified provide a genetic explanation for variation in starch properties in sorghum.
Keyword Sorghum
Starch
Protein
Fibre
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online 31 August 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
Queensland Alliance for Agriculture and Food Innovation
 
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