Wheat and Barley Genetics and Pathology

A framework for gene mapping in wheat demonstrated using the Yr7 yellow rust resistance gene

The paper maps the Yr7 yellow rust resistance gene in wheat using QTL mapping, association mapping, and mapping-by-sequencing, narrowing the interval to a candidate gene.

Chromosome-scale assembly of the bread wheat genome, Triticum aestivum, reveals over 5700 new genes

The paper presents an updated wheat genome assembly, Triticum 4.0, which includes 15.07 gigabases of sequence and over 5700 new genes, improving upon previous assemblies.

A genome assembly of the barley 'transformation reference' cultivar Golden Promise

The paper presents a high-quality genome assembly for the barley cultivar Golden Promise, useful for genetic research and CRISPR-Cas9 experiments.

Identification of a major QTL and associated marker for high arabinoxylan fibre in white wheat flour

The paper identifies a major QTL and marker for high arabinoxylan fibre in white wheat flour using crosses with high and average AX cultivars.

Natural genetic variation underlying tiller development in barley (Hordeum vulgare L)

This study identifies genetic variation affecting tiller number and rate in barley, finding correlations with agronomic traits and QTL overlapping with days to heading and spike row-type.

Exome sequencing of bulked segregants identified a novel TaMKK3-A allele linked to the wheat ERA8 ABA-hypersensitive germination phenotype

The paper uses BSA-exome-seq to fine-map the ERA8 mutant in wheat to the TaMKK3-A locus, identifying a missense mutation linked to ABA hypersensitive germination.

Linear modeling reveals a predominance of cis- over trans- regulatory effects in wild and domesticated barley

This study uses RNA-seq to analyze allele-specific expression in barley hybrids, finding that cis-regulatory effects dominate over trans effects and are stable under cold stress.

Genetic analysis of Aegilops tauschii-derived seedling resistance to leaf rust in synthetic hexaploid wheat

The paper identifies a new leaf rust resistance gene, LrSyn137, in synthetic hexaploid wheat line Syn137 through cytogenetic and molecular mapping.

Three previously characterized resistances to yellow rust are encoded by a single locus Wtk1

The paper shows that three yellow rust resistance genes in wheat are all encoded by the same locus Wtk1, but their resistance responses vary depending on genetic background.

Bivariate analysis of barley scald resistance with relative maturity reveals a new major QTL on chromosome 3H

TRITEX: chromosome-scale sequence assembly of Triticeae genomes with open-source tools

TRITEX improves chromosome-scale genome assemblies for Triticeae crops using open-source tools and multiple sequencing data types.

Discovery of powdery mildew resistance gene candidates from Aegilops biuncialis chromosome 2Mb based on transcriptome sequencing

The paper identifies broad-spectrum powdery mildew resistance gene candidates on chromosome 2Mb of Aegilops biuncialis using RNA-seq and molecular marker analysis.

Emergence of the Ug99 lineage of the wheat stem rust pathogen through somatic hybridisation

The paper shows that the Ug99 wheat stem rust pathogen emerged through somatic hybridisation and nuclear exchange between dikaryons, with one haploid nucleus genotype shared with an older African lineage.

TaAPO-A1, an ortholog of rice ABERRANT PANICLE ORGANIZATION 1, is associated with total spikelet number per spike in elite hexaploid winter wheat varieties (Triticum aestivum L.)

The paper identifies TaAPO-A1, a wheat gene orthologous to rice APO1, associated with spikelet number and related traits in wheat.

Bulked segregant analysis RNA-seq (BSR-Seq) validated a stem resistance locus in Aegilops umbellulata, a wild relative of wheat

The paper validates a stem rust resistance QTL on chromosome 2U of Ae. umbellulata using bulk segregant analysis and refines its position to 3.2 Mbp.

A comparative genomic analysis of the barley pathogen Pyrenophora teres f. teres identifies sub-telomeric regions as drivers of virulence

The paper compares five genomes of Pyrenophora teres f. teres to identify sub-telomeric regions as key drivers of virulence through comparative genomic analysis.

Sequence based mapping identifies AWNS1, a candidate transcription repressor underlying awn suppression at the B1 locus in wheat

Environmental association identifies candidates for tolerance to low temperature and drought

The paper identifies genetic loci associated with low temperature and drought tolerance in barley using environmental association and linkage disequilibrium analysis.

Validation and delineation of a locus conferring Fusarium crown rot resistance on 1HL in barley by analysing transcriptomes from multiple pairs of near isogenic lines

The paper validates a resistance locus for Fusarium crown rot in barley using near-isogenic lines and transcriptomic analysis, identifying candidate genes and SNPs markers.

The Zymoseptoria tritici ORFeome: a functional genomics community resource

The paper describes the creation of an ORFeome library for Zymoseptoria tritici, providing a resource for functional genomics studies of this wheat pathogen.

Unraveling the genetic architecture of grain size in einkorn wheat through linkage and homology mapping, and transcriptomic profiling

The paper identifies 17 genomic regions and 42 QTL associated with grain size in einkorn wheat using linkage mapping and RNA-seq, highlighting starch biosynthesis as key.

Worldwide phylogeography and history of wheat genetic diversity

A phylogeographical study reveals the complex history of wheat genetic diversity through time and space.

Barley yield formation under abiotic stress depends on the interplay between flowering time genes and environmental cues

The paper shows that flowering time genes in barley affect yield under abiotic stress, with environmental cues modulating their effects, and suggests using wild barley genes to improve yield in crops.

Analysis of the recombination landscape of hexaploid bread wheat reveals genes controlling recombination and gene conversion frequency

The paper analyzes recombination patterns in hexaploid wheat, identifies genes controlling recombination and gene conversion, and highlights a novel RecQ helicase gene involved in gene conversion.

Grain Protein Content QTLs Identified in a Durum x Wild Emmer Wheat Mapping Population Tested in Five Environments

The paper identifies 12 grain protein content QTLs in a durum x wild emmer wheat RIL population across five environments, with 11 favorable alleles from wild emmer wheat.

Analysis of genetic control and QTL mapping of essential wheat grain quality traits in a recombinant inbred population

The paper analyzes genetic control and maps QTLs for wheat grain quality traits in a recombinant inbred population across three environments, identifying 38 putative QTLs explaining 7.9% to 16.8% phenotypic variation.

Deciphering the Genetics of Major End-Use Quality Traits in Wheat

This study identifies QTL for 16 end-use quality traits in wheat using a RIL population and phenotyping across nine environments, finding stable A-QTL and DE-QTL that explain significant phenotypic variation.

Resistance gene discovery and cloning by sequence capture and association genetics

This paper clones four stem rust resistance genes in wild diploid wheat using association genetics and R gene enrichment sequencing within six months.

Integrating genomic resources to present full gene and promoter capture probe sets for bread wheat

The paper presents and validates two capture probe sets for wheat to enable efficient and cost-effective re-sequencing of genes and promoters.

Efficient curation of genebanks using next generation sequencing reveals substantial duplication of germplasm accessions

The paper uses next generation sequencing to identify and remove duplicated germplasm accessions in genebanks, revealing over 50% duplication in Aegilops tauschii collections.