A5061197477- Wheat and Barley Genetics and Pathology
- Genetics and Plant Breeding
- Genetic Mapping and Diversity in Plants and Animals
- Plant Disease Resistance and Genetics
- Genetic and phenotypic traits in livestock
- Crop Yield and Soil Fertility
- Plant nutrient uptake and metabolism
- Sugarcane Cultivation and Processing
- Mycotoxins in Agriculture and Food
- Agricultural Productivity and Crop Improvement
- Banana Cultivation and Research
- Nematode management and characterization studies
- Bioenergy crop production and management
- Yeasts and Rust Fungi Studies
- Plant pathogens and resistance mechanisms
- Legume Nitrogen Fixing Symbiosis
- Plant Virus Research Studies
- Plant Pathogens and Fungal Diseases
- Plant tissue culture and regeneration
- Evolutionary Algorithms and Applications
- Powdery Mildew Fungal Diseases
- Agronomic Practices and Intercropping Systems
- Rice Cultivation and Yield Improvement
- Genetic diversity and population structure
- Plant Pathogens and Resistance
The University of Queensland
2016-2025
Agriculture and Food
2016-2025
ARC Centre of Excellence for Plant Success in Nature and Agriculture
2020-2024
Salk Institute for Biological Studies
2023
Plant breeding requires numerous generations to be cycled and evaluated before an improved cultivar is released. This lengthy process required introduce test multiple traits of interest. However, a technology for rapid generation advance named 'speed breeding' was successfully deployed in bread wheat (Triticum aestivum L.) achieve six per year while imposing phenotypic selection foliar disease resistance grain dormancy. Here, the first time deployment this methodology presented durum Desf.)...
The optimal root system architecture (RSA) of a crop is context dependent and critical for efficient resource capture in the soil. Narrow growth angle promoting deeper often associated with improved access to water nutrients deep soils during terminal drought. RSA, therefore drought-adaptive trait that could minimise yield losses regions limited rainfall. Here, GWAS seminal (SRA) identified seven marker-trait associations clustered on chromosome 6A, representing major quantitative locus...
There are many challenges facing the development of high-yielding, nutritious crops for future environments. One limiting factor is generation time, which prolongs research and plant breeding timelines. Recent advances in speed protocols have dramatically reduced time short-day long-day species by optimizing light temperature conditions during growth. However, winter with a vernalization requirement still require up to 6-10 weeks low-temperature before transition reproductive development....
The fungus Parastagonospora nodorum causes Septoria blotch (SNB) of wheat. A genetically diverse wheat panel was used to dissect the complexity SNB and identify novel sources resistance. is causal agent pathosystem mediated by multiple fungal necrotrophic effector–host sensitivity gene interactions that include SnToxA–Tsn1, SnTox1–Snn1, SnTox3–Snn3. P. strain lacking SnToxA, SnTox1, SnTox3 (toxa13) retained wild-type-like ability infect some modern cultivars, suggesting evidence other...
Abstract Loss of genetic diversity in elite crop breeding pools can severely limit long‐term gains and ability to make new traits, like heat tolerance, that are becoming important as the climate changes. Here, we investigate propose potential program applications optimal haplotype stacking (OHS), a selection method retains useful population. OHS selects sets candidates containing, between them, segments with very high segment values for target trait. We compared performance OHS, similar...
Abstract Key message There is variation in stay-green within barley breeding germplasm, influenced by multiple haplotypes and environmental conditions. The positive genetic correlation between yield across environments highlights the potential as a future target. Barley considered one of most naturally resilient crops making it an excellent candidate to dissect genetics drought adaptive component traits. Stay-green, thought contribute adaptation, which photosynthetic machinery maintained for...
Spot blotch (SB), a prevalent foliar disease of barley, is caused by the hemibiotrophic fungal pathogen Bipolaris sorokiniana. Predominately occurring in humid growing regions worldwide, SB can result yield losses up to 30%. Genetic resistance remains most effective strategy for management; however, Australian barley cultivars exhibit susceptibility despite previous identification major loci. This study investigates genetic architecture underlying spot within an breeding program. Resistance...
Abstract Key message Genetic variation in stripe rust resistance exists Australian wheat breeding populations and is environmentally influenced. Stacking multiple haplotypes or using whole-genome approaches will improve stability environmental specificity. Wheat ( Puccinia striiformis ) a fungal disease responsible for substantial yield losses globally. To maintain crop productivity future climates, the identification of genetics offering durable across diverse growing conditions crucial....
Durum wheat (Triticum turgidum L. ssp. durum) production can experience significant yield losses due to crown rot (CR) disease. Losses are usually exacerbated when disease infection coincides with terminal drought. is very susceptible CR, and resistant germplasm not currently available in elite breeding pools. We hypothesize that deploying physiological traits for drought adaptation, such as optimal root system architecture reduce water stress, might minimize CR infection. This study...
Sugarcane smut and Pachymetra root rots are two serious diseases of sugarcane, with susceptible infected crops losing over 30% yield. A heritable component to both has been demonstrated, suggesting selection could improve disease resistance. Genomic accelerate gains even further, enabling early resistant seedlings for breeding clonal propagation. In this study we evaluated four types algorithms genomic predictions performance These were: best linear unbiased prediction (GBLUP), including...
Common bean (Phaseolus vulgaris L.) production in the tropics typically occurs rainfed systems on marginal lands where yields are low, primarily as a consequence of drought and low phosphorus (P) availability soil. This study aimed to investigate physiological chemical responses 12 bush genotypes for adaptation individual combined stress factors P availability. Water deficiency, both individually combined, decreased seed weight aboveground biomass by ∼80%. deficit deficiency photosynthesis...
Multi-year evaluation of the Vavilov wheat diversity panel identified new sources adult plant resistance to stripe rust. Genome-wide association studies revealed key genomic regions influencing resistance, including seven novel loci. Wheat rust (YR) caused by Puccinia striiformis f. sp. tritici (Pst) poses a significant threat global food security. Resistance genes commonly found in many varieties have been rendered ineffective due rapid evolution pathogen. To identify (APR), 292 accessions...
Host genetic resistance is the most effective and sustainable means of managing tan spot or yellow wheat. The disease becoming increasingly problematic due to adoption minimum tillage practices, evolution effector‐mediated pathogenicity, widespread cultivation susceptible cultivars from a narrow base. This highlights importance broadening diversity factors in modern breeding germplasm. study explored 300 genetically diverse wheat accessions, originally sourced N. I. Vavilov Institute Plant...
Wild barley accessions have evolved broad-spectrum defence against powdery mildew through recessive mlo mutations. However, the response is associated with deleterious phenotypes a cost to yield and fertility, implications for natural fitness agricultural productivity. This research elucidates mechanism behind novel allele, designated mlo-11(cnv2), which has milder phenotype compared standard mlo-11. Bisulphite sequencing histone ChIP-seq analyses using near-isogenic lines showed pronounced...
Genetic resistance to net form of blotch in the international barley differential Canadian Lake Shore (CLS) was characterized and mapped. A doubled haploid (DH) population generated from a cross between CLS susceptible cultivar Harrington evaluated at seedling stage using eight diverse Pyrenophora teres f. (Ptt) isolates adult field natural inoculum. To effectively map resistance, comparative marker frequency analysis (MFA) performed 8,762 polymorphic DArT-seq markers, where 'resistant'...