A5041617653- Wheat and Barley Genetics and Pathology
- Plant nutrient uptake and metabolism
- Genetic Mapping and Diversity in Plants and Animals
- Plant Molecular Biology Research
- Genetics and Plant Breeding
- Crop Yield and Soil Fertility
- Rice Cultivation and Yield Improvement
- Bioenergy crop production and management
- Plant Stress Responses and Tolerance
- Plant tissue culture and regeneration
- Light effects on plants
- Plant Disease Resistance and Genetics
- Biochemical Analysis and Sensing Techniques
- Nuclear Physics and Applications
- Molecular Biology Techniques and Applications
- melanin and skin pigmentation
- Radioactive element chemistry and processing
- Radioactive contamination and transfer
Commonwealth Scientific and Industrial Research Organisation
2015-2024
Agriculture and Food
2018-2024
Grains Research and Development Corporation
2022
La Trobe University
2012-2018
AgriBio
2015-2018
Health Sciences and Nutrition
2015
Semidwarfing genes have improved crop yield by reducing height, improving lodging resistance, and allowing plants to allocate more assimilates grain growth. In wheat (
Understanding the function of genes within staple crops will accelerate crop improvement by allowing targeted breeding approaches. Despite their importance, a lack genomic information and resources has hindered functional characterisation in major crops. The recent release high-quality reference sequences for these underpins suite genetic that support basic research breeding. For wheat, include gene model annotations, expression atlases networks provide about putative function. Sequenced...
Semidwarfing genes have greatly increased wheat yields globally, yet the widely used gibberellin (GA)-insensitive Rht-B1b and Rht-D1b disadvantages for seedling emergence. Use of GA-sensitive semidwarfing gene Rht13 avoids this pleiotropic effect. Here, we show that encodes a nucleotide-binding site/leucine-rich repeat ( NB-LRR ) gene. A point mutation in semidwarf Rht-B13b allele autoactivates causes height reduction comparable with diverse genetic backgrounds. The autoactive leads to...
Abstract An increase in global temperatures will impact future crop yields. In the cereal crops wheat and barley, high accelerate reproductive development, reducing number of grains per plant final grain yield. Despite this relationship between temperature yield, it is not clear what genes molecular pathways mediate developmental response to increased temperatures. The circadian clock can respond changes important for photoperiod-dependent flowering, so a potential mechanism controlling...
Abstract Key message Characterisation and genetic mapping of a key gene defining root morphology in bread wheat. Root is central to plants for the efficient uptake up soil water mineral nutrients. Here we describe conditional mutant hexaploid wheat ( Triticum aestivum L.) that when grown with high Ca 2+ develops larger rhizosheath accompanied shorter roots than wild type. In wheat, size reliable surrogate hair length this was verified which possessed longer hairs type soil. We named Stumpy...
Abstract The number of rachis nodes (spikelets) on a wheat spike is component grain yield that correlates with flowering time. genetic basis regulating in cereals well understood, but there are reports time can be modified at high frequency by selective breeding, suggesting it may regulated both epigenetic and mechanisms. We investigated the role DNA methylation spikelet treating semi‐spring demethylating agent, Zebularine. Three lines heritable increase were identified. molecular for...
Abstract The induced dwarf mutant Rht12 was previously shown to have agronomic potential replace the conventional DELLA mutants Rht-B1b/Rht-D1b in wheat. dwarfing gene is not associated with reduced coleoptile length (unlike mutants) and it dominant, characteristics which are shared characterized genes Rht18 Rht14. Using Rht18/Rht14 model, a gibberellin (GA) 2-oxidase identified region on chromosome 5A. A screen for suppressor background tall overgrowth individuals that were contain...
The Arabidopsis intracellular sodium–proton exchanger (NHX) proteins AtNHX5 and AtNHX6 have a well-documented role in plant development, been used to improve salt tolerance variety of species. Despite evidence that NHX are important vacuolar trafficking, the mechanism this is poorly understood. Here we show NHX5 NHX6 necessary for processing predominant seed storage proteins, also influence activity enzyme. Furthermore, by yeast two-hybrid bimolecular fluorescence complementation (BiFC)...
The plant circadian clock is an internal timekeeper that coordinates biological processes with daily changes in the external environment. transcript levels of genes, which oscillate to control outputs, were examined during early seedling development barley (Hordeum vulgare), a model for temperate cereal crops. Oscillations gene do not occur seedlings grown darkness or constant light but observed day-night cycles. A dark-to-light transition influenced some genes triggered only weak...
In Arabidopsis thaliana, the endosomal-localized Na+/H+ antiporters NHX5 and NHX6 regulate ion pH homeostasis are important for plant growth development. However, mechanism by which these endosomal NHXs function in development is not well understood. Auxin modulates through formation of concentration gradients tissue to control cell division expansion. Here, we identified a role establishment maintenance auxin embryo root tissues. We observed developmental impairment abnormal tissues double...
Good establishment is important for rapid leaf area development in wheat crops. Poor results fewer, later-emerging plants, reduced and tiller number. In addition, poorly established crops suffer from increased soil moisture loss through evaporation greater competition weeds while fewer spikes are produced which can reduce grain yield. By protecting the emerging first leaf, coleoptile critical achieving good establishment, its length interaction with physical properties determine ability of a...
Improving crop species by breeding for salt tolerance or introducing tolerant traits is one method of increasing yields in saline affected areas. Extensive studies the model plant Arabidopsis thaliana has led to availability substantial information regarding function and importance many genes involved tolerance. However, identification characterization A. orthologs such as Brassica napus (oilseed rape) can prove difficult due significant genomic changes that have occurred since their...
To adapt to the challenges of climate change and growing world population, it is vital increase global crop production. Understanding function genes within staple crops will accelerate improvement by allowing targeted breeding approaches. Despite importance wheat, which provides 20 % calories consumed humankind, a lack genomic information resources has hindered functional characterisation in this species. The recent release high-quality reference sequence for wheat underpins suite genetic...
Structural variations (SVs) represent a large fraction of all genetic diversity, but how this diversity is translated into phenotypic and organismal unclear. Explosive diversification dog coat color patterns after domestication can provide unique opportunity to explore question; however, the major obstacle efficiently collect sufficient number individuals with known phenotypes genotypes hundreds thousands markers. Using customer-provided information about dogs tested on commercial canine...
To adapt to the challenges of climate change and growing world population, it is vital increase global crop production. Understanding function genes within staple crops will accelerate improvement by allowing targeted breeding approaches. Despite importance wheat, which provides 20 % calories consumed humankind, a lack genomic information resources has hindered functional characterisation in this species. The recent release high-quality reference sequence for wheat underpins suite genetic...
Abstract Root morphology is central to plants for the efficient uptake up of soil water and mineral nutrients. Here we describe a conditional mutant hexaploid wheat (Triticum aestivum) that when grown in with high Ca2+, develops larger rhizosheath accompanied shorter roots than wild type. In wheat, size reliable surrogate root hair length this was verified which possessed longer hairs type Ca2+ soil. We named Stumpy showed it be due single semi-dominant mutation. The short phenotype at...
Abstract Semidwarfing genes have greatly increased wheat yields globally, yet the widely used gibberellin (GA) insensitive Rht-B1b and Rht-D1b disadvantages for seedling emergence. Use of GA sensitive semidwarfing gene Rht13 avoids this pleiotropic effect. Here we show that encodes a nucleotide-binding site/leucine-rich repeat (NB-LRR) gene. A point mutation in semidwarf Rht-B13b allele autoactivates NB-LRR causes height reduction comparable to diverse genetic backgrounds. The autoactive...