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GrainGenes Gene Report: Iw3 (Triticum)

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Gene	Iw3 (Triticum)
Synonym	Previous name I3-W Dubcovsky J et al. (1997) Seed-storage-protein loci in RFLP maps of diploid, tetraploid, and hexaploid wheat. Theoretical and Applied Genetics 95:1169-1180. IW3 Dubcovsky J et al. (1997) Seed-storage-protein loci in RFLP maps of diploid, tetraploid, and hexaploid wheat. Theoretical and Applied Genetics 95:1169-1180.
Gene Class	Glaucousness
Reference	Wang J et al. (2014) Fine mapping and metabolic and physiological characterization of the glume glaucousness inhibitor locus Iw3 derived from wild wheat. Theoretical and Applied Genetics 127:831-841. Pukhalskiy VA et al. (1999) Genetic analysis of spike waxlessness in a line of common wheat Triticum aestivum L. Russian Journal of Genetics 35:1050-1054. Dubcovsky J et al. (1997) Seed-storage-protein loci in RFLP maps of diploid, tetraploid, and hexaploid wheat. Theoretical and Applied Genetics 95:1169-1180.
URL	Iw3 gene at Komugi: Catalogue of Gene Symbols for Wheat
Chromosome Arm	1BL Dubcovsky J et al. (1997) Seed-storage-protein loci in RFLP maps of diploid, tetraploid, and hexaploid wheat. Theoretical and Applied Genetics 95:1169-1180.
Germplasm	Alien chromosome substitution line Tetraploid stock Langdon*/T. turgidum subsp. dicoccoides 1B Wang J et al. (2014) Fine mapping and metabolic and physiological characterization of the glume glaucousness inhibitor locus Iw3 derived from wild wheat. Theoretical and Applied Genetics 127:831-841. Tetraploid stock T. turgidum var. dicoccoides Dubcovsky J et al. (1997) Seed-storage-protein loci in RFLP maps of diploid, tetraploid, and hexaploid wheat. Theoretical and Applied Genetics 95:1169-1180.
Comment	A non-glaucous spike phenotype in line L-592. A 7S(7A) substitution line, is described in (Pukhalskiy et al., 1999 ). Mapping information: XWL1967/Xfcp168-1B - 0.15 cM - XWL3096 - 0.015 cM - Iw3 - 0.12 cM - Xpsp3000-1B (Wang et al., 2014).
Info Source	McIntosh RA et al. (2013) Catalogue of Gene Symbols for Wheat- 2013 Edition Catalogue of Gene Symbols for Wheat. McIntosh RA et al. (2020) Catalogue of Gene Symbols for Wheat- 2020 Supplement Catalogue of Gene Symbols for Wheat.
Data Curator	Cooper, Laurel June-2021

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