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A soybean quantitative trait locus that promotes flowering under long days is identified as FT5a, a FLOWERING LOCUS T ortholog.
- Source :
-
Journal of experimental botany [J Exp Bot] 2016 Sep; Vol. 67 (17), pp. 5247-58. Date of Electronic Publication: 2016 Jul 15. - Publication Year :
- 2016
-
Abstract
- FLOWERING LOCUS T (FT) is an important floral integrator whose functions are conserved across plant species. In soybean, two orthologs, FT2a and FT5a, play a major role in initiating flowering. Their expression in response to different photoperiods is controlled by allelic combinations at the maturity loci E1 to E4, generating variation in flowering time among cultivars. We determined the molecular basis of a quantitative trait locus (QTL) for flowering time in linkage group J (Chromosome 16). Fine-mapping delimited the QTL to a genomic region of 107kb that harbors FT5a We detected 15 DNA polymorphisms between parents with the early-flowering (ef) and late-flowering (lf) alleles in the promoter region, an intron, and the 3' untranslated region of FT5a, although the FT5a coding regions were identical. Transcript abundance of FT5a was higher in near-isogenic lines for ef than in those for lf, suggesting that different transcriptional activities or mRNA stability caused the flowering time difference. Single-nucleotide polymorphism (SNP) calling from re-sequencing data for 439 cultivated and wild soybean accessions indicated that ef is a rare haplotype that is distinct from common haplotypes including lf The ef allele at FT5a may play an adaptive role at latitudes where early flowering is desirable.<br /> (© The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology.)
- Subjects :
- Flowers growth & development
Flowers physiology
Gene Expression Regulation, Plant
Genes, Plant genetics
Genes, Plant physiology
Photoperiod
Plant Proteins genetics
Plant Proteins physiology
Polymorphism, Single Nucleotide genetics
Quantitative Trait Loci physiology
Sequence Analysis, DNA
Glycine max growth & development
Glycine max physiology
Flowers genetics
Quantitative Trait Loci genetics
Glycine max genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1460-2431
- Volume :
- 67
- Issue :
- 17
- Database :
- MEDLINE
- Journal :
- Journal of experimental botany
- Publication Type :
- Academic Journal
- Accession number :
- 27422993
- Full Text :
- https://doi.org/10.1093/jxb/erw283