A SNP in GmBADH2 gene associates with fragrance in vegetable soybean variety "Kaori" and SNAP marker development for the fragrance.
Summary of "A SNP in GmBADH2 gene associates with fragrance in vegetable soybean variety "Kaori" and SNAP marker development for the fragrance."
Fragrance in soybean is due to the presence of 2-acetyl-1-pyrroline (2AP). BADH2 gene coding for betaine aldehyde dehydrogenase has been identified as the candidate gene responsible for fragrance in rice (Oryza sativa L.). In this study, using the RIL population derived from fragrant soybean cultivar "Kaori" and non-fragrant soybean cultivar "Chiang Mai 60" (CM60), STS markers designed from BADH2 homolog were found associating with 2AP production. Genetic mapping demonstrated that QTL position of fragrance and 2AP production coincides with the position of GmBADH2 (Glycine max betaine aldehyde dehydrogenase 2). Sequence comparison of GmBADH2 between Kaori and non-fragrant soybeans revealed non-synonymous single-nucleotide polymorphism (SNP) in exon 10. Nucleotide substitution of G to A in the exon results in an amino acid change of glycine (GGC; G) to aspartic acid (GAC; D) in Kaori. The amino acid substitution changes the conserved EGCRLGPIVS motif of GmBADH2, which is essential for functional activity of GmBADH2 protein, to EGCRLDPIVS motif, suggesting that the SNP in GmBADH2 is responsible for the fragrance in Kaori. Five single nucleotide-amplified polymorphism (SNAP) markers which are PCR-based allele specific SNP markers were developed for fragrance based on the SNP in GmBADH2. Two markers specific to A allele produced a band in only Kaori, while three markers specific to G alleles produced a band in only CM60. The simple PCR-based allele specific SNAP markers developed in the present study are useful in marker-assisted breeding of fragrant soybean.
Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom, 73140, Thailand.
This article was published in the following journal.
Name: TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21046066
- DOI: http://dx.doi.org/10.1007/s00122-010-1467-6
Medical and Biotech [MESH] Definitions
Oil from soybean or soybean plant.
Proteins which are present in or isolated from vegetables or vegetable products used as food. The concept is distinguished from PLANT PROTEINS which refers to non-dietary proteins from plants.
Gene Transfer Techniques
The introduction of functional (usually cloned) GENES into cells. A variety of techniques and naturally occurring processes are used for the gene transfer such as cell hybridization, LIPOSOMES or microcell-mediated gene transfer, ELECTROPORATION, chromosome-mediated gene transfer, TRANSFECTION, and GENETIC TRANSDUCTION. Gene transfer may result in genetically transformed cells and individual organisms.
The number of copies of a given gene present in the cell of an organism. An increase in gene dosage (by GENE DUPLICATION for example) can result in higher levels of gene product formation. GENE DOSAGE COMPENSATION mechanisms result in adjustments to the level GENE EXPRESSION when there are changes or differences in gene dosage.
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