ArticleBMC plant biology2014
The cuticular wax inhibitor locus Iw2 in wild diploid wheat Aegilops tauschii: phenotypic survey, genetic analysis, and implications for the evolution of common wheat.
Article in BMC plant biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 27 citations in OpenAlex.
- Transcriptional control of cuticle formation during development.Journal of experimental botany · 2026Review
- Introgression of quantitative trait locus qSFWI6D from Aegilops tauschii improves salt tolerance in wheat at seedling stage.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Identification and Specific KASP Marker Development for Durum Wheat T2DS-2AS.2AL Translocation Line YL-429 with Wax Inhibitor GenePlants (Basel, Switzerland) · 2025Article
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- Identification and validation of an ECERIFERUM2- LIKE gene controlling cuticular wax biosynthesis in cabbage (Brassica oleracea L. var. capitata L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2021Article
- How Machine Learning Methods Helped Find Putative Rye Wax Genes Among GBS Data.International journal of molecular sciences · 2020Article
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- Long noncoding miRNA gene represses wheat β-diketone waxes.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
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- Genome-wide identification of novel genetic markers from RNA sequencing assembly of diverse Aegilops tauschii accessions.Molecular genetics and genomics : MGG · 2016Article
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4 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundCuticular wax production on plant surfaces confers a glaucous appearance and plays important roles in plant stress tolerance. Most common wheat cultivars, which are hexaploid, and most tetraploid wheat cultivars are glaucous; in contrast, a wild wheat progenitor, Aegilops tauschii, can be glaucous or non-glaucous. A dominant non-glaucous allele, Iw2, resides on the short arm of chromosome 2D, which was inherited from Ae. tauschii through polyploidization. Iw2 is one of the major causal genes related to variation in glaucousness among hexaploid wheat. Detailed genetic and phylogeographic knowledge of the Iw2 locus in Ae. tauschii may provide important information and lead to a better understanding of the evolution of common wheat.
resultsGlaucous Ae. tauschii accessions were collected from a broad area ranging from Armenia to the southwestern coastal part of the Caspian Sea. Linkage analyses with five mapping populations showed that the glaucous versus non-glaucous difference was mainly controlled by the Iw2 locus in Ae. tauschii. Comparative genomic analysis of barley and Ae. tauschii was then used to develop molecular markers tightly linked with Ae. tauschii Iw2. Chromosomal synteny around the orthologous Iw2 regions indicated that some chromosomal rearrangement had occurred during the genetic divergence leading to Ae. tauschii, barley, and Brachypodium. Genetic associations between specific Iw2-linked markers and respective glaucous phenotypes in Ae. tauschii indicated that at least two non-glaucous accessions might carry other glaucousness-determining loci outside of the Iw2 locus.
conclusionAllelic differences at the Iw2 locus were the main contributors to the phenotypic difference between the glaucous and non-glaucous accessions of Ae. tauschii. Our results supported the previous assumption that the D-genome donor of common wheat could have been any Ae. tauschii variant that carried the recessive iw2 allele.
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