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GrainGenes Allele Report: vrn-A1b (Triticum)

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Allele	vrn-A1b (Triticum)
Reference	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. 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.
Gene Class	Response to vernalization (Triticum)
Gene	Vrn-A1 (Triticum)
Germplasm	Hexaploid stock IL369 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. Malacca 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.
Comment	This allele has two copies of the gene, possibly arranged in tandem, although the physical structure is unknown. Both copies are distinguished from Chinese Spring vrn-A1a by a SNP in exon 7 (T in Malacca, C in Chinese Spring). One copy also has a SNP in exon 4 (T in Malacca, C in Chinese Spring). Sequenced cDNAs from Malacca show that both copies are expressed (Diaz et al., 2012). GenBank JF965396 (Diaz et al., 2012).
Probe	Exon7_C/T_Vrn-A1 Vrn-A1b-Marq Vrn-A1_9K0001 Vrn1_new
URL	vrn-A1b allele at Komugi: Catalogue of Gene Symbols for Wheat
Data Curator	Cooper, Laurel Jan-2021

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