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Author Lu F.H., Park Y.J.
Title An SNP downstream of the OsBEIIb gene is significantly associated with amylose content and viscosity properties in rice (Oryza sativa L.)
Abstract:
Allele mining in starch synthesis-related genes (SSRGs) has facilitated the discovery of desired natural sequence variations for eating quality in rice. This study investigated the sequence variations from 10 SSRGs, and further evaluated their relationship with the amylose content (AC) and rapid viscosity analysis profiles in a global collection of rice accessions by association mapping (AM). In total, 83 sequence variations were found in 10 sequenced amplicons, including 73 single nucleotide polymorphisms (SNPs), eight insertion-deletions (InDels) and two polymorphic simple sequence repeats (SSRs). Four subpopulations were identified by population structure analysis based on 170 genome-wide SSR genotypes. AM revealed 11 significant associations between three phenotypic indices and three sequence variations. One SNP with a g/c transversion at the 63rd nucleotide downstream of the OsBEIIb gene termination codon on rice chromosome 2 was significantly associated with multiple trait indices in both the general linear and mixed linear models (GLM and MLM), including the final viscosity (p < 0.001, R 2 = 23.87%) in both 2009 and 2010, and AC (p < 0.01, R 2 = 11.25%) and trough viscosity (p < 0.01, R 2 = 20.43) in 2010. This study provides a new perspective of allele mining for breeding strategies based on marker-assisted selection. c 2012 Elsevier Ltd.
Journal J. Cereal Sci.
Country South Korea
Volume 56
Pages 706-712
Year 2012
PubMed ID -
PubMed Central ID -
DOI 10.1016/j.jcs.2012.08.007
URL -
Relation
Gene FLO5 ISA3 PHS8 SBE1 SBE3 SBE4 SSIIB WX1
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
-
Stages in Each Organ
- Muant Lines (Gene)
-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase