ArticleJournal of experimental botany2020
Misexpression of a transcriptional repressor candidate provides a molecular mechanism for the suppression of awns by Tipped 1 in wheat.
Article in Journal of experimental botany, 2020. 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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11 citing papers in PubMed, 18 citations in OpenAlex.
- Enhancing genomic prediction of wheat resistance to fusarium head blight through integration of passive resistance traits.Frontiers in plant science · 2026Article
- The impact of awn length on seed yield and drought resistance in Elymus sibiricus L. and the molecular mechanism underlying awn length regulation.BMC plant biology · 2025Article
- A wheat chromosome segment substitution line series supports characterization and use of progenitor genetic variation.The plant genome · 2024Article
- Mapping QTLs with additive and epistatic effects for awn length and their effects on kernel-related traits in common wheat.Frontiers in plant science · 2024Article
- The TaTCP4/10-B1 cascade regulates awn elongation in wheat (Triticum aestivum L.).Plant communications · 2023Article
- Trade-offs in the genetic control of functional and nutritional quality traits in UK winter wheat.Heredity · 2022Article
- InDels Identification and Association Analysis with Spike and Awn Length in Chinese Wheat Mini-Core Collection.International journal of molecular sciences · 2022Article
- Digitized collections elucidate invasion history and patterns of awn polymorphism in Microstegium vimineum.American journal of botany · 2022Article
- Rapid identification and deployment of major genes for flowering time and awn traits in common wheat.Frontiers in plant science · 2022Article
- Review
- Toward identification of a putative candidate gene for nutrient mineral accumulation in wheat grains for human nutrition purposes.Journal of experimental botany · 2021Article
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Authors and funding
7 authors at 3 institutions in 3 countries.
Funding
Abstract
Awns are bristle-like structures formed at the tip of the lemma on the florets of some cereal grasses. Wild-type wheat is awned, but awnletted and awnless variants have been selected and nowadays all forms are cultivated. In this study, we dissected the genetic control underlying variation of this characteristic feature by association mapping in a large panel of 1110 winter wheat cultivars of worldwide origin. We identified the B1 (Tipped 1) locus on chromosome 5A as the major determinant of awnlessness globally. Using a combination of fine-mapping and expression analysis, we identified a putative C2H2 zinc finger protein with an EAR domain, characteristic of transcriptional repressors, as a likely candidate for Tipped 1. This gene was found to be up-regulated in awnless B1 compared with awned b1 plants, indicating that misexpression of this transcriptional regulator may contribute to the reduction of awn length in B1 plants. Taken together, our study provides an entry point towards a better molecular understanding of the evolution of morphological features in cereals through selection and breeding.
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