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GrainGenes Gene Report: Vrn-A1 (Triticum)

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Gene	Vrn-A1 (Triticum)
Synonym	Other name Vrn1 (Triticum)
Gene Class	Response to vernalization (Triticum)
Allele	vrn-A1 (Triticum) [ Show all 11 ]
Locus	Vrn-A1
Reference	Zhu J et al. (2014) Copy number and haplotype variation at the VRN-A1 and central FR-A2 loci are associated with frost tolerance in hexaploid wheat Theoretical and Applied Genetics 127:1183-1197. Diaz A et al. (2012) Copy Number Variation Affecting the Photoperiod-B1 and Vernalization-A1 Genes Is Associated with Altered Flowering Time in Wheat (Triticum aestivum). PLOS ONE 7:e33234. Chu C-G et al. (2011) A Novel Retrotransposon Inserted in the Dominant Vrn-B1 Allele Confers Spring Growth Habit in Tetraploid Wheat (Triticum turgidum L.) G3: Genes, Genomes, Genetics 1:637-645. Fu D et al. (2005) Large deletions within the first intron in VRN-1 are associated with spring growth habit in barley and wheat. Molecular Genetics and Genomics 273:54-65. Soria MA and Dubcovsky J MAS Wheat. Bringing Genomics to the Wheat Fields. Abiotic Stress and Agronomic Traits. Vernalization requirement.
URL	Vrn-A1 gene at Komugi: Catalogue of Gene Symbols for Wheat
Gene Product	VRN-A1
Chromosome	5A
Comment	Copy number variation for vrn-A1 was detected in IL369 (2 copies) (Fu et al., 2005), Malacca (2 copies) and Heeward (3 copies). Higher copy number was associated with later flowering or with increasing requirement for vernalization (i.e. longer exposure to cold is needed to achieve full vernalization) (Diaz et al., 2012). Mapped to the interval: Xgwm271-5A - 6.5 cM - Vrn-A1 - Xbarc232-5A (Chu et al, 2011).
Clone	Exon7_C/T_Vrn-A1 Vrn-A1b-Marq Vrn-A1_9K0001 Vrn1_new
Sequence	AY747600 AY747600_1.cds AY747601 AY747601_1.cds
Data Curator	Cooper, Laurel Dec-2020

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