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Origin and evolution of the bread wheat D genome (2024)
Journal Article
Cavalet-Giorsa, E., González-Muñoz, A., Athiyannan, N., Holden, S., Salhi, A., Gardener, C., Quiroz-Chávez, J., Rustamova, S. M., Elkot, A. F., Patpour, M., Rasheed, A., Mao, L., Lagudah, E. S., Periyannan, S. K., Sharon, A., Himmelbach, A., Reif, J. C., Knauft, M., Mascher, M., Stein, N., …Krattinger, S. G. (2024). Origin and evolution of the bread wheat D genome. Nature, 633, 848-855. https://doi.org/10.1038/s41586-024-07808-z

Bread wheat (Triticum aestivum) is a globally dominant crop and major source of calories and proteins for the human diet. Compared with its wild ancestors, modern bread wheat shows lower genetic diversity, caused by polyploidisation, domestication an... Read More about Origin and evolution of the bread wheat D genome.

The 4T and 7T introgressions from Amblyopyrum muticum and the 5Au introgression from Triticum urartu increases grain zinc and iron concentrations in Malawian wheat backgrounds (2024)
Journal Article
Guwela, V. F., Maliro, M. F., Broadley, M. R., Hawkesford, M. J., Bokosi, J. M., Grewal, S., Coombes, B., Hall, A., Yang, C., Banda, M., Wilson, L., & King, J. (2024). The 4T and 7T introgressions from Amblyopyrum muticum and the 5Au introgression from Triticum urartu increases grain zinc and iron concentrations in Malawian wheat backgrounds. Frontiers in Plant Science, 15, Article 1346046. https://doi.org/10.3389/fpls.2024.1346046

Micronutrient deficiencies (MNDs) particularly zinc (Zn) and iron (Fe) remain widespread in sub-Saharan Africa (SSA) due to low dietary intake. Wheat is an important source of energy globally, although cultivated wheat is inherently low in grain micr... Read More about The 4T and 7T introgressions from Amblyopyrum muticum and the 5Au introgression from Triticum urartu increases grain zinc and iron concentrations in Malawian wheat backgrounds.

Chromosome-scale genome assembly of bread wheat’s wild relative Triticum timopheevii (2024)
Journal Article
Grewal, S., Yang, C., Scholefield, D., Ashling, S., Ghosh, S., Swarbreck, D., …King, J. (2024). Chromosome-scale genome assembly of bread wheat’s wild relative Triticum timopheevii. Scientific Data, 11(1), Article 420. https://doi.org/10.1038/s41597-024-03260-w

Wheat (Triticum aestivum) is one of the most important food crops with an urgent need for increase in its production to feed the growing world. Triticum timopheevii (2n = 4x = 28) is an allotetraploid wheat wild relative species containing the At and... Read More about Chromosome-scale genome assembly of bread wheat’s wild relative Triticum timopheevii.

Unravelling the impact of soil types on zinc, iron, and selenium concentrations in grains and straw of wheat/Amblyopyrum muticum and wheat/Triticum urartu doubled haploid lines (2024)
Journal Article
Guwela, V. F., Broadley, M. R., Hawkesford, M. J., Maliro, M. F. A., Bokosi, J., Banda, M., …King, J. (2024). Unravelling the impact of soil types on zinc, iron, and selenium concentrations in grains and straw of wheat/Amblyopyrum muticum and wheat/Triticum urartu doubled haploid lines. Frontiers in Agronomy, 6, Article 1305034. https://doi.org/10.3389/fagro.2024.1305034

The concentration of mineral nutrients in plants is associated with bioavailabilities of soil mineral nutrients, which are regulated by various soil physio-chemical properties. A pot experiment was conducted to investigate the effects of soil type on... Read More about Unravelling the impact of soil types on zinc, iron, and selenium concentrations in grains and straw of wheat/Amblyopyrum muticum and wheat/Triticum urartu doubled haploid lines.

Assessing the potential of using the Langdon 5D(5B) substitution line for the introgression of Aegilops tauschii into durum wheat (2022)
Journal Article
Othmeni, M., Grewal, S., Walker, J., Yang, C., King, I. P., & King, J. (2022). Assessing the potential of using the Langdon 5D(5B) substitution line for the introgression of Aegilops tauschii into durum wheat. Frontiers in Plant Science, 13, Article 927728. https://doi.org/10.3389/fpls.2022.927728

Aegilops tauschii, the D-genome donor of hexaploid wheat, provides a source of genetic variation that could be used for tetraploid (durum) wheat improvement. In addition to the genes for wheat quality on the D-genome, which differentiate between brea... Read More about Assessing the potential of using the Langdon 5D(5B) substitution line for the introgression of Aegilops tauschii into durum wheat.

Identification of Fusarium Head Blight Resistance in Triticum timopheevii Accessions and Characterization of Wheat-T. timopheevii Introgression Lines for Enhanced Resistance (2022)
Journal Article
Steed, A., King, J., Grewal, S., Yang, C. Y., Clarke, M., Devi, U., King, I. P., & Nicholson, P. (2022). Identification of Fusarium Head Blight Resistance in Triticum timopheevii Accessions and Characterization of Wheat-T. timopheevii Introgression Lines for Enhanced Resistance. Frontiers in Plant Science, 13, Article 943211. https://doi.org/10.3389/fpls.2022.943211

A diverse panel of wheat wild relative species was screened for resistance to Fusarium head blight (FHB) by spray inoculation. The great majority of species and accessions were susceptible or highly susceptible to FHB. Accessions of Triticum timophee... Read More about Identification of Fusarium Head Blight Resistance in Triticum timopheevii Accessions and Characterization of Wheat-T. timopheevii Introgression Lines for Enhanced Resistance.

Exploring Untapped Wheat Genetic Resources to Boost Food Security (2022)
Book Chapter
King, J., Grewal, S., Fellers, J. P., & King, I. P. (2022). Exploring Untapped Wheat Genetic Resources to Boost Food Security. In Wheat Improvement: Food Security in a Changing Climate (319-340). Springer. https://doi.org/10.1007/978-3-030-90673-3_18

Increasing the genetic diversity of wheat is key to its future production in terms of increasing yields, resistance to diseases and adaptability to fluctuations in global climate. The use of the progenitor species of wheat and also its wild relatives... Read More about Exploring Untapped Wheat Genetic Resources to Boost Food Security.

Introgression of the Triticum timopheevii Genome Into Wheat Detected by Chromosome-Specific Kompetitive Allele Specific PCR Markers (2022)
Journal Article
King, J., Grewal, S., Othmeni, M., Coombes, B., Yang, C., Walter, N., …King, I. (2022). Introgression of the Triticum timopheevii Genome Into Wheat Detected by Chromosome-Specific Kompetitive Allele Specific PCR Markers. Frontiers in Plant Science, 13, Article 919519. https://doi.org/10.3389/fpls.2022.919519

Triticum timopheevii (2n = 28, AtAtGG) is a tetraploid wild relative species with great potential to increase the genetic diversity of hexaploid wheat Triticum aestivum (2n = 42, AABBDD) for various important agronomic traits. A breeding scheme that... Read More about Introgression of the Triticum timopheevii Genome Into Wheat Detected by Chromosome-Specific Kompetitive Allele Specific PCR Markers.

Whole-genome sequencing uncovers the structural and transcriptomic landscape of hexaploid wheat/Ambylopyrum muticum introgression lines (2022)
Journal Article
Coombes, B., Fellers, J. P., Grewal, S., Rusholme‐Pilcher, R., Hubbart‐Edwards, S., Yang, C., Joynson, R., King, I. P., King, J., & Hall, A. (2023). Whole-genome sequencing uncovers the structural and transcriptomic landscape of hexaploid wheat/Ambylopyrum muticum introgression lines. Plant Biotechnology Journal, 21(3), 482-496. https://doi.org/10.1111/pbi.13859

Wheat is a globally vital crop, but its limited genetic variation creates a challenge for breeders aiming to maintain or accelerate agricultural improvements over time. Introducing novel genes and alleles from wheat's wild relatives into the wheat br... Read More about Whole-genome sequencing uncovers the structural and transcriptomic landscape of hexaploid wheat/Ambylopyrum muticum introgression lines.

Chromosome-specific KASP markers for detecting Amblyopyrum muticum segments in wheat introgression lines (2022)
Journal Article
Grewal, S., Coombes, B., Joynson, R., Hall, A., Fellers, J., Yang, C. Y., …King, J. (2022). Chromosome-specific KASP markers for detecting Amblyopyrum muticum segments in wheat introgression lines. Plant Genome, The, 15(1), Article e20193. https://doi.org/10.1002/tpg2.20193

Many wild-relative species are being used in prebreeding programs to increase the genetic diversity of wheat (Triticum aestivum L.). Genotyping tools such as single nucleotide polymorphism (SNP)-based arrays and molecular markers have been widely use... Read More about Chromosome-specific KASP markers for detecting Amblyopyrum muticum segments in wheat introgression lines.

Generation of Doubled Haploid Wheat-Triticum urartu Introgression Lines and Their Characterisation Using Chromosome-Specific KASP Markers (2021)
Journal Article
Grewal, S., Guwela, V., Newell, C., Yang, C. Y., Ashling, S., Scholefield, D., …King, J. (2021). Generation of Doubled Haploid Wheat-Triticum urartu Introgression Lines and Their Characterisation Using Chromosome-Specific KASP Markers. Frontiers in Plant Science, 12, Article 643636. https://doi.org/10.3389/fpls.2021.643636

Wheat is one of the most important food and protein sources in the world and although, in recent years wheat breeders have achieved yield gains, they are not sufficient to meet the demands of an ever-growing population. Development of high yielding w... Read More about Generation of Doubled Haploid Wheat-Triticum urartu Introgression Lines and Their Characterisation Using Chromosome-Specific KASP Markers.

Development of Wheat-Aegilops caudata Introgression Lines and Their Characterization Using Genome-Specific KASP Markers (2020)
Journal Article
Grewal, S., Othmeni, M., Walker, J., Hubbart Edwards, S., Yang, C. Y., Scholefield, D., …King, J. (2020). Development of Wheat-Aegilops caudata Introgression Lines and Their Characterization Using Genome-Specific KASP Markers. Frontiers in Plant Science, 11, Article 606. https://doi.org/10.3389/fpls.2020.00606

© Copyright © 2020 Grewal, Othmeni, Walker, Hubbart-Edwards, Yang, Scholefield, Ashling, Isaac, King and King. Aegilops caudata L. [syn. Ae. markgrafii (Greuter) Hammer], is a diploid wild relative of wheat (2n = 2x = 14, CC) and a valuable source fo... Read More about Development of Wheat-Aegilops caudata Introgression Lines and Their Characterization Using Genome-Specific KASP Markers.

Exploiting the genome of Thinopyrum elongatum to expand the gene pool of hexaploid wheat (2020)
Journal Article
Baker, L., Grewal, S., Yang, C. Y., Hubbart-Edwards, S., Scholefield, D., Ashling, S., …King, J. (2020). Exploiting the genome of Thinopyrum elongatum to expand the gene pool of hexaploid wheat. TAG Theoretical and Applied Genetics, 133, 2213–2226. https://doi.org/10.1007/s00122-020-03591-3

© 2020, The Author(s). Key message: One hundred and thirty four introgressions from Thinopyrum elongatum have been transferred into a wheat background and were characterised using 263 SNP markers. Abstract: Species within the genus Thinopyrum have be... Read More about Exploiting the genome of Thinopyrum elongatum to expand the gene pool of hexaploid wheat.

Resistance to wheat rusts identified in wheat/Amblyopyrum muticum chromosome introgressions (2020)
Journal Article
Fellers, J. P., Matthews, A., Fritz, A. K., Rouse, M. N., Grewal, S., Hubbart‐Edwards, S., …King, J. (2020). Resistance to wheat rusts identified in wheat/Amblyopyrum muticum chromosome introgressions. Crop Science, 60(4), 1957-1964. https://doi.org/10.1002/csc2.20120

© 2020 The Authors. Crop Science © 2020 Crop Science Society of America Wheat (Triticum aestivum L.) rusts are a worldwide production problem. Plant breeders have used genetic resistance to combat these fungi. However, single-gene resistance is rapid... Read More about Resistance to wheat rusts identified in wheat/Amblyopyrum muticum chromosome introgressions.

The use of pentaploid crosses for the introgression of Amblyopyrum muticum and D-genome chromosome segments into durum wheat (2019)
Journal Article
Othmeni, M., Grewal, S., Hubbart-Edwards, S., Yang, C., Scholefield, D., Ashling, S., …King, J. (2019). The use of pentaploid crosses for the introgression of Amblyopyrum muticum and D-genome chromosome segments into durum wheat. Frontiers in Plant Science, 10, Article 1110. https://doi.org/10.3389/fpls.2019.01110

The wild relatives of wheat provide an important source of genetic variation for wheat improvement. Much of the work in the past aimed at transferring genetic variation from wild relatives into wheat has relied on the exploitation of the ph1b mutant,... Read More about The use of pentaploid crosses for the introgression of Amblyopyrum muticum and D-genome chromosome segments into durum wheat.

Rapid identification of homozygosity and site of wild relative introgressions in wheat through chromosome-specific KASP genotyping assays (2019)
Journal Article
Grewal, S., Hubbart-Edwards, S., Yang, C., Devi, U., Baker, L., Heath, J., …King, J. (2020). Rapid identification of homozygosity and site of wild relative introgressions in wheat through chromosome-specific KASP genotyping assays. Plant Biotechnology Journal, 18(3), 743-755. https://doi.org/10.1111/pbi.13241

For future food security, it is important that wheat, one of the most widely consumed crops in the world, can survive the threat of abiotic and biotic stresses. New genetic variation is currently being introduced into wheat through introgressions fro... Read More about Rapid identification of homozygosity and site of wild relative introgressions in wheat through chromosome-specific KASP genotyping assays.

Development and characterisation of interspecific hybrid lines with genome-wide introgressions from Triticum timopheevii in a hexaploid wheat background (2019)
Journal Article
Devi, U., Grewal, S., Yang, C., Hubbart-Edwards, S., Scholefield, D., Ashling, S., …King, J. (2019). Development and characterisation of interspecific hybrid lines with genome-wide introgressions from Triticum timopheevii in a hexaploid wheat background. BMC Plant Biology, 19, Article 183. https://doi.org/10.1186/s12870-019-1785-z

© 2019 The Author(s). Background: Triticum timopheevii (2n = 4x = 28; AtAtGG), is an important source for new genetic variation for wheat improvement with genes for potential disease resistance and salt tolerance. By generating a range of interspecif... Read More about Development and characterisation of interspecific hybrid lines with genome-wide introgressions from Triticum timopheevii in a hexaploid wheat background.

Development of stable homozygous wheat/Amblyopyrum muticum (Aegilops mutica) introgression lines and their cytogenetic and molecular characterization (2019)
Journal Article
King, J., Newell, C., Grewal, S., Hubbart-Edwards, S., Yang, C.-Y., Scholefield, D., …King, I. P. (2019). Development of stable homozygous wheat/Amblyopyrum muticum (Aegilops mutica) introgression lines and their cytogenetic and molecular characterization. Frontiers in Plant Science, 10, 1-10. https://doi.org/10.3389/fpls.2019.00034

Wheat is one of the world’s most important sources of food. However, due to its evolution its genetic base has narrowed, which is severely limiting the ability of breeders to develop new higher yielding varieties that can adapt to the changing enviro... Read More about Development of stable homozygous wheat/Amblyopyrum muticum (Aegilops mutica) introgression lines and their cytogenetic and molecular characterization.

Detection of T. urartu introgressions in wheat and development of a panel of interspecific introgression lines (2018)
Journal Article
Grewal, S., Edwards, S. H., Yang, C., Scholefield, D., Ashling, S., Burridge, A., …King, J. (2018). Detection of T. urartu introgressions in wheat and development of a panel of interspecific introgression lines. Frontiers in Plant Science, 9, Article 1565. https://doi.org/10.3389/fpls.2018.01565

Tritcum urartu (2n = 2x = 14, AuAu), the A genome donor of wheat, is an important source for new genetic variation for wheat improvement due to its high photosynthetic rate and disease resistance. By facilitating the generation of genome-wide introgr... Read More about Detection of T. urartu introgressions in wheat and development of a panel of interspecific introgression lines.

Introgression of Aegilops speltoides segements in Triticum aestivum and the effect of the gametocidal genes (2017)
Journal Article
King, J., Grewal, S., Yang, C., Hubbart Edwards, S., Scholefield, D., Ashling, S., …King, I. P. (2018). Introgression of Aegilops speltoides segements in Triticum aestivum and the effect of the gametocidal genes. Annals of Botany, 121(12), https://doi.org/10.1093/aob/mcx149

• Background and Aims Bread wheat (Triticum aestivum) has been through a severe genetic bottleneck as a result of its evolution and domestication. It is therefore essential that new sources of genetic variation are generated and utilized. This study... Read More about Introgression of Aegilops speltoides segements in Triticum aestivum and the effect of the gametocidal genes.