Below are curation updates in GrainGenes for March 2025.  

Summary

• 8 curated references with the following new data:
• 74 QTL
• 31 genes
• 4 loci
• 42 molecular probes
• 1 sequence
• 2 germplasm

Please contact feedback@graingenes.org for suggestions on future curation projects or questions/comments on the current work. 

25 Breeders Meta QTL from PLoS 19:e0303751 .   Du, et al. (2024) Genome-wide screening of meta-QTL and candidate genes controlling yield and yield-related traits in barley (Hordeum vulgare L.)

QTL are described for (GMT) grain morphological traits, (GN) grain number, (SRT) spike-related traits, (GW) grain weight, (GY) grain yield, (GPT) growth period traits, (BY) biomass yield, (TN) tiller number, (PH) plant height, (HI) harvest index, (GFRT) grain filling-related traits.

We added Wheat Pangenome (17 cultivars; Jiao et al. 2024) to our genome browser collection and BLAST databases.

Publication: Nature, Jiao et al, 2024 - Structural variation in the pangenome of wild and domesticated barley

Genome Browser: 

2023 African Spring Wheat Stem Rust screening data is now available on the Germplasm page at https://wheat.pw.usda.gov/GG3/germplasm

We added Barley Pangenome V2 (76 assemblies) to our genome browser collection and BLAST database.

Publication: Jayakodi et al., Nature, 2024 - Structural variation in the pangenome of wild and domesticated barley
News Release: GrainGenes Hot Topic for Barley Pangenome v2

As part of our goal to increase the curation efficiency of reflecting new genes, qtl, etc. for the small grains, GrainGenes is beginning to explore using AI to assist in the curation. To begin, papers are being curated by the human curator (Vic Blake) at GG to provide a training set.
Below are the first of the training papers added to GrainGenes that will be used.

We added Synthetic Hexaploid Wheat Cultivar Chuanmai 104 to our genome browser collection and BLAST database.

Publication: Scientific Data, Liu et al, 2024 - Chromosome-level assembly of the synthetic hexaploid wheat-derived cultivar Chuanmai 104

Genome Browser: Chuanmai 104

A set of genome resources have been deposited on GrainGenes to complement recent work published for the Aegilops tauschii D genome led by the KAUST research group. Please visit the GrainGenes Tools / PanGenomes to visit the Tauschii Wheat Resource link and see the link to the publication : Cavalet-Giorsa et al. 2024. Origin and evolution of the bread wheat D genome.

The Watkins Landrace Collection contains wheat accessions collected world-wide. A publication in preprint in Nature 'Harnessing landrace diversity empowers wheat breeding' (Cheng S, et al.) reports 1428 GWAS QTL from the natural population and 3280 QTL from a population of recombinant inbred lines (RILs) from a nested-association mapping panel (NAM) with the common parent Paragon.