Wheat and Barley Genetics and Pathology

Genome-wide association analysis of resistance to scald in an adapted multiparent winter malting barley population

This study identifies genetic factors controlling scald resistance in winter malting barley using GWAS and finds that Rrs1 contributes 29% of the variation, with other QTLs and agronomic traits also influencing resistance.

Genome-wide association analysis reveals new loci for leaf water status, biomass and plant architectural traits in bread wheat under rainfed conditions

This study identifies genetic loci associated with drought-related traits in bread wheat using genome-wide association analysis.

Identification of septoria nodorum blotch susceptibility genes in hard winter wheat

The paper identifies susceptibility genes for septoria nodorum blotch in U.S. hard winter wheat using genetic markers and association studies.

Genetic architecture and evolution of stripe rust resistance uncovered using diverse panels of wheat lines and North American Puccinia striiformis f. sp. tritici isolates

The paper identifies 77 unique Yr loci associated with stripe rust resistance in wheat using diverse germplasm and pathogen isolates, with 44 potentially novel and nine effective at the adult plant stage.

Two ancient nuclear lineages and divergent reproductive strategies drive global success of the wheat stripe rust pathogen

The paper uses population-genomic analyses of wheat stripe rust fungus isolates to identify two ancient nuclear lineages and their role in the pathogen's global success.

Genome-Wide Association study in a US soft winter wheat population reveals novel and known sources of resistance to the Septoria tritici blotch pathogen Zymoseptoria tritici

A GWAS of 337 US soft winter wheat genotypes identified 12 marker-trait associations for resistance to Zymoseptoria tritici, including both known and novel resistance genes.

Candidate genes for stem rust resistance in Italian ryegrass revealed by nested association mapping

This study identifies four novel candidate genes for stem rust resistance in Italian ryegrass using nested association mapping and high-density genotyping.

Increased grain weight conferred by GW2 mutations in wheat does not translate into yield gains in multi-year field trials of near-isogenic lines

This study evaluates the yield impact of TaGW2 mutations in wheat, finding increased grain size but no overall yield gain due to reduced grain number.

A practical phenotyping framework for root system architecture reveals enhanced root vigor in an Aegilops tauschii-derived wheat line

This study develops a phenotyping framework for root system architecture in wheat and identifies an Aegilops tauschii-derived line with enhanced root vigor under controlled conditions.

Watkins wheat landraces: a treasure of stripe rust resistance alleles identified using multi-model association analyses

This study identifies 87 QTLs for stripe rust resistance in 297 Watkins wheat landraces, including 10 known Yr genes and 46 novel loci.

A chromosome-scale, haplotype-resolved genome assembly of the barley stripe rust pathogen Puccinia striiformis f. sp. hordei

The paper presents a high-quality, haplotype-resolved genome assembly of the barley stripe rust pathogen Puccinia striiformis f. sp. hordei using long-read and Hi-C sequencing.

Genetic analysis and mapping of adult plant stripe rust resistance loci in CIMMYT wheat 'Kijil under Mexican and Chinese field environments

This study identifies five stripe rust resistance loci in wheat line Kijil, including two novel loci, and develops markers for marker-assisted selection in breeding programs.

Long-term surveillance reveals hybridization by nuclear reassortment and intercontinental spread as major evolutionary drivers in wheat yellow rust

The paper tracks global spread and hybridization of wheat yellow rust pathogen, identifying nuclear reassortment and intercontinental movement as key drivers of evolution and disease impact.

Integrating molecular and physiological approaches to quantify genetic controls for wheat development and improve phenotyping

The paper updates and validates a model for predicting wheat development by integrating molecular and physiological data, showing it can predict phenological responses to environment and guide genetic studies.

Haplotype-phased genomes of the barley leaf rust pathogen reveal evidence of repeat element expansion and somatic hybridization

The paper presents haplotype-phased, chromosome-scale genomes of Puccinia hordei isolates, revealing repeat expansion, somatic hybridization, and genome plasticity.

Computational predictions and evolutionary analysis of LrK10 kinase-related putative PSTOL1 gene homeologs in wheat and orthologs of its wild relatives.

The paper identifies and analyzes putative PSTOL1 homeologs in wheat and their evolutionary relationship with LrK10 orthologs, finding recent divergence and structural differences.

A high-quality bread wheat genome unravels adaptive evolution of wheat end-use quality

The paper presents a high-quality wheat genome assembly and analyzes the evolution of gluten genes contributing to wheat end-use quality.

The barley ear row-number allele ancestral to the six-row allele vrs1.a1 is found in wild barley from the Fertile Crescent

The paper identifies the origin of the barley VRS1 allele vrs1.a1 as a mutation of the wild-type Vrs1.b1 allele in wild barley from the eastern Fertile Crescent.

Regulation of spikelet number during wheat spike development

This paper reviews gene networks regulating spikelet number in wheat and highlights recent advances in understanding and engineering spike development for improved yield.

Novel clonal lineages of wheat stem rust in the Southern Cone of South America

The paper characterizes novel clonal lineages of wheat stem rust in South America using genomic data and finds a predominant lineage unique to the region with stepwise mutation patterns.

The Annotated Blueprint: Integrated Functional Genomic Resources for a Model Tetraploid Wheat Triticum turgidum cv. Kronos

The paper presents a chromosome-scale reference genome for Triticum turgidum cv. Kronos, enhancing functional genomic resources through improved annotations and re-analysis of existing datasets.

Genome-wide analysis reveals the genetic basis of key agronomic traits and modern wheat breeding in Henan Province

This study identifies 263 genes associated with key wheat traits in Henan Province through GWAS and selective sweep analysis, revealing breeding advances and candidate genes for future improvement.

Early root-root interactions weaken foliar defense responses against Septoria tritici blotch in a durum wheat varietal mixture

The paper shows that root-root interactions in durum wheat mixtures delay foliar defense responses to Septoria tritici blotch, increasing susceptibility.

Advancing rust resistance in elite wheat with haplotype mapping and a novel introgression strategy

This study identifies haploblocks associated with rust resistance in wheat and develops a selection index to improve breeding for durable resistance.

From Photoperiod Thresholds to Photoperiod sensitivity: Dual Strategies for Cost-Effective Speed Breeding and Climate-Ready Barley

This study identifies allelic variations in flowering time genes that influence photoperiod response parameters, enabling energy-efficient speed breeding and climate-resilient barley varieties.

Virulence and genomic analysis of Puccinia coronata f. sp. avenae in Australia identifies new races and a new lineage in 2024

The paper analyzes 30 Puccinia coronata f. sp. avenae isolates from Australia to identify new races and a novel lineage, highlighting shifts in virulence and population structure.

Identification of stripe rust adult plant resistance genes in the hard winter wheat cultivar Bakers Ann

The paper identifies stripe rust resistance genes in the wheat cultivar Bakers Ann through QTL analysis of a DH population, finding four QTL with additive effects.

A segment of Triticum timopheevii chromosome 3G confers type II Fusarium head blight resistance and reduces DON accumulation in wheat.

Accumulation of ph1 (zip4-5B) and ph2 (msh7-3D) mutations fails to boost homoeologous recombination in hexaploid wheat

This study shows that mutations in ZIP4-5B and MSH7-3D genes do not increase homoeologous recombination in hexaploid wheat hybrids, with ZIP4-5B alone being most effective.

QTL mapping of oat crown rust resistance in Australian fields and identification of a seedling resistance locus in oat line GS7

This paper identifies a QTL for oat crown rust resistance linked to the Pc61 gene and develops KASP markers for breeding programs.