High molecular weight glutenin gene diversity in Aegilops tauschii demonstrates unique origin of superior wheat quality

Delorean, Emily; Gao, Liangliang; Lopez, Jose Fausto Cervantes; Mehrabi, Ali Ashraf; Bentley, Alison R.; Sharon, Amir; Keller, Beat; Steffenson, Brian J.; Steuernagel, Burkhard; Sansaloni, Carolina; Liu, Dengcai; Lagudah, Evans; Nasyrova, Firuza; Brown‐Guedira, Gina; Sela, Hanan; Dvořák, Jan; Mayer, Klaus; Krasileva, Ksenia; Gaurav, Kumar; Mao, Long; Cáccamo, Mario; Mascher, Martin; Luo, Ming‐Cheng; Chhuneja, Parveen; Davey, Robert P.; Faris, Justin D.; Xu, Steven S.; Nicholson, P.; Chayut, Noam; Ambrose, M.; Rawat, Nidhi; Tiwari, Vijay K.; Wulff, Brande B. H.; Ibba, María Itria; Poland, Jesse

doi:10.1038/s42003-021-02563-7

Cited by 18 publications

(8 citation statements)

References 48 publications

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“…Despite the common wheat’s low genetic diversity, the HMW-GS of close wheat relatives are highly varied, offering valuable genetic resources for the improvement of wheat quality [ 45 ]. For example, 45 HMW-GS gene haplotypes have been identified in Aegilops tauschii to date, of which the subunits 1Dx3t and 1Dx4t can improve the processing quality of wheat [ 46 , 47 ]. In addition, Glu-1U -encoded HMW-GS can also improve wheat quality.…”

Section: Discussionmentioning

confidence: 99%

Molecular Characterization and Marker Development of the HMW-GS Gene from Thinopyrum elongatum for Improving Wheat Quality

Dai

Shi

et al. 2023

IJMS

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The quality of wheat primarily depends on its storage protein quality, especially in regards to gluten content and high-molecular-weight glutenin subunits (HMW-GS). The number of HMW-GS alleles is limited in bread wheat (Triticum aestivum L.), whereas it is abundant in wheat relatives. Therefore, HMW-GS alleles from wheat relatives could provide a potential for improving quality in wheat breeding. Thinopyrum elongatum (EE) is one of the relatives of wheat. The E genome is closely related to the ABD genome in wheat; therefore, Th. elongatum is often used as an excellent exogenous gene donor for wheat genetic improvement. In this study, the high-molecular glutenin subunit gene was cloned and sequenced from Th. elongatum. A specific molecular marker for identifying the Glu-1Ey subunit gene was developed and applied to detected wheat-Th. elongatum alien introgression lines. Quality analysis indicated that the substitution and addition lines containing Th. elongatum alleles significantly (p < 0.05) increased grain protein content by 3.76% to 5.11%, wet-gluten content by 6.55% to 8.73%, flour 8-MW by 0.25% to 6.35%, and bread volume value by 33.77 mL to 246.50 mL, in comparing it with Chinese Spring. The GMP content and lactic acid SRC showed significant positive correlations with flour processing quality and might be used as indicators for wheat quality. The results were expected to provide a novel route for improving processing quality in wheat quality breeding.

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Section: Discussionmentioning

confidence: 99%

Molecular Characterization and Marker Development of the HMW-GS Gene from Thinopyrum elongatum for Improving Wheat Quality

Dai

Shi

et al. 2023

IJMS

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“…This segment carries a superior wheat quality allele at the Glu-D1 locus that originated from Ae. tauschii L3 36 . In modern bread wheat (for example, wheat cultivars CDC Landmark, CDC Stanley, and Jagger), this L3 segment is ~8.5 Mb in size.…”

Section: The Ae Tauschii Pangenome Facilitates Gene Discoverymentioning

confidence: 99%

Origin and evolution of the bread wheat D genome

Cavalet-Giorsa,

González-Muñoz,

Athiyannan

et al. 2023

Preprint

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Bread wheat (Triticum aestivum) is a globally dominant crop and major source of calories and proteins for the human diet. Compared to its wild ancestors, modern bread wheat shows lower genetic diversity caused by polyploidisation, domestication, and breeding bottlenecks1,2. Wild wheat relatives represent genetic reservoirs, harbouring diversity and beneficial alleles that have not been incorporated into bread wheat. Here, we establish and analyse pangenome resources for Tausch’s goatgrass,Aegilops tauschii, the donor of the bread wheat D genome. This new pangenome facilitated the cloning of a disease resistance gene and haplotype analysis across a complex disease resistance locus, allowing us to discern alleles from paralogous gene copies. We also reveal the complex genetic composition and history of the bread wheat D genome, involving previously unreported contributions from genetically and geographically discreteAe. tauschiisubpopulations. Together, our results reveal the complex history of the bread wheat D genome and demonstrate the potential of wild relatives in crop improvement.

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“…tauschii accession TD81 (Zhang et al, 2008). Delorean et al (2021) discovered 45 haplotypes in Glu-D1 of Ae.…”

Section: Introductionmentioning

confidence: 99%

Agronomic performance of introgression lines derived from a cross of common wheat with synthetic hexaploid amphiploid 530-1

Daskalova,

Georgieva,

Angelova

et al. 2023

JCEA

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This study characterized six introgression lines obtained from crossing two winter bread wheat varieties Albena and Slaveya with the D-genome synthetic hexaploid wheat 530-1. Phenotypically, the lines differed from the parents, as five of them expressed red spike color versus line 45-5 producing new coloration, identified as striped or banded glume pigmentation. All lines were taller, with longer ears and spikelets, later in heading time and less productive in grain yield than both wheat parents. They showed some positive traits in the field: optimal test weight (78-80 kg/hl), high thousand kernel weight (48-51 g), low sprouted seeds (0.3-1.5%), and high falling number (314-350 s). Two lines (38-7 and 46-7) exceeded the parents in grain protein content. In the competitive variety trial, Albena showed significantly higher sprouted grains (4.1%) and extreme measurements for a percentage of germination (99.0%) and germination index (83.0%) in 2022. The data identified Albena as a wheat variety with pre-harvest sprouting susceptibility. Of the lines, only 45-5 stood out with the lowest germination values and appeared as a promising genotype with resistance to pre-harvest sprouting. The introgression lines exerted useful genetic diversity for the studied traits and could serve as resources for quality improvement in wheat breeding programs.

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High molecular weight glutenin gene diversity in Aegilops tauschii demonstrates unique origin of superior wheat quality

Cited by 18 publications

References 48 publications

Molecular Characterization and Marker Development of the HMW-GS Gene from Thinopyrum elongatum for Improving Wheat Quality

Molecular Characterization and Marker Development of the HMW-GS Gene from Thinopyrum elongatum for Improving Wheat Quality

Origin and evolution of the bread wheat D genome

Agronomic performance of introgression lines derived from a cross of common wheat with synthetic hexaploid amphiploid 530-1

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