Peter R. Ryan
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FtMYB163 Gene Encodes SG7 R2R3-MYB Transcription Factor from Tartary Buckwheat (Fagopyrum tataricum Gaertn.) to Promote Flavonol Accumulation in Transgenic Arabidopsis thaliana Open
Tartary buckwheat (Fagopyrum tataricum Gaertn.) is a coarse grain crop rich in flavonoids that are beneficial to human health because they function as anti-inflammatories and provide protection against cardiovascular disease and diabetes. …
Effects of Cadmium Stress on Tartary Buckwheat Seedlings Open
Cadmium (Cd) is a naturally occurring toxic heavy metal that adversely affects plant germination, growth, and development. While the effects of Cd have been described on many crop species including rice, maize, wheat and barley, few studie…
View article: Reduced tillering and dwarfing genes alter root traits and rhizo‐economics in wheat
Reduced tillering and dwarfing genes alter root traits and rhizo‐economics in wheat Open
The tiller inhibition ( tin ) and Reduced height ( Rht ) genes strongly influence the carbon partitioning and architecture of wheat shoots, but their effects on the energy economy of roots have not been examined in detail. We examined mult…
View article: Introgression of early shoot vigour in wheat modifies root systems, increases competitiveness and provides options for integrated weed management
Introgression of early shoot vigour in wheat modifies root systems, increases competitiveness and provides options for integrated weed management Open
Background and aims Weeds are a major biotic stressor impacting crop production. Improving the competitiveness of wheat ( Triticum aestivum L.) could provide a useful tool in integrated weed management. While wheat typically exhibits conse…
View article: Dissecting the causal polymorphism of the <i>Lr67res</i> multipathogen resistance gene
Dissecting the causal polymorphism of the <i>Lr67res</i> multipathogen resistance gene Open
Partial resistance to multiple biotrophic fungal pathogens in wheat (Triticum aestivum L.) is conferred by a variant of the Lr67 gene, which encodes a hexose–proton symporter. Two mutations (G144R and V387L) differentiate the resistant and…
A conditional mutation in a wheat (Triticum aestivum) gene regulating root morphology. Open
Root morphology is central to plants for the efficient uptake up of soil water and mineral nutrients. Here we describe a conditional mutant of hexaploid wheat (Triticum aestivum) that when grown in soil with high Ca2+, develops a larger rh…
Physical Mapping of QTLs for Root Traits in a Population of Recombinant Inbred Lines of Hexaploid Wheat Open
Root architecture is key in determining how effective plants are at intercepting and absorbing nutrients and water. Previously, the wheat (Triticum aestivum) cultivars Spica and Maringa were shown to have contrasting root morphologies. The…
View article: Expression of the wheat multipathogen resistance hexose transporter <i>Lr67res</i> is associated with anion fluxes
Expression of the wheat multipathogen resistance hexose transporter <i>Lr67res</i> is associated with anion fluxes Open
Many disease resistance genes in wheat (Triticum aestivum L.) confer strong resistance to specific pathogen races or strains, and only a small number of genes confer multipathogen resistance. The Leaf rust resistance 67 (Lr67) gene fits in…
Assessing the effectiveness of the TaMATE1B and TaALMT1 genes to enhance the Al3+ tolerance of durum wheat (Triticum turgidum) grown under controlled conditions and in the field Open
Purpose Durum wheat is sensitive of acid soils because it lacks effective genes for Al 3+ tolerance. Previous research showed introgression of the TaMATE1B and TaALMT1 genes individually increased the Al 3+ tolerance of durum wheat. Here w…
View article: A genome-wide association study (GWAS) identifies multiple loci linked with the natural variation for Al3+ resistance in Brassica napus
A genome-wide association study (GWAS) identifies multiple loci linked with the natural variation for Al3+ resistance in Brassica napus Open
Acid soils limit yields of many important crops including canola (Brassica napus), Australia’s third largest crop. Aluminium (Al3+) stress is the main cause of this limitation primarily because the toxic Al3+ present inhibits root growth. …
View article: The wheat multi-pathogen resistance gene, Lr67res, confers a novel gain-of-function phenotype involving anion fluxes
The wheat multi-pathogen resistance gene, Lr67res, confers a novel gain-of-function phenotype involving anion fluxes Open
Partial resistance to multiple biotrophic fungal pathogens in wheat (Triticum aestivum L.) is conferred by the Lr67 gene, which encodes a Sugar Transport Protein 13 (STP13) family hexose-proton symporter variant. Two mutations (G144R, V387…
View article: Selection for early shoot vigour in wheat increases root hair length but reduces epidermal cell size of roots and leaves
Selection for early shoot vigour in wheat increases root hair length but reduces epidermal cell size of roots and leaves Open
Six cycles of recurrent selection for early shoot vigour in wheat resulted in significant increases in leaf width and shoot biomass. Here, in replicated controlled-environment studies, the effect of early shoot vigour on root biomass, rhiz…
View article: Competitiveness of Early Vigour Wheat (Triticum aestivum L.) Genotypes Is Established at Early Growth Stages
Competitiveness of Early Vigour Wheat (Triticum aestivum L.) Genotypes Is Established at Early Growth Stages Open
Weed competitiveness in wheat (Triticum aestivum L.) has previously been shown to be positively associated with shoot biomass. This study evaluated the impact of increased early shoot vigour on the weed competitiveness of Australian wheats…
Organic Anions Facilitate the Mobilization of Soil Organic Phosphorus and Enhances Its Subsequent Lability To Phosphatases Open
Purpose Organic anions commonly released from plant roots are widely reported to mobilize soil phosphorus (P). We characterized soil organic P that was mobilized by organic anions and assessed its amenability to hydrolysis by phosphatase e…
View article: Manipulating exudate composition from root apices shapes the microbiome throughout the root system
Manipulating exudate composition from root apices shapes the microbiome throughout the root system Open
Certain soil microorganisms can improve plant growth, and practices that encourage their proliferation around the roots can boost production and reduce reliance on agrochemicals. The beneficial effects of the microbial inoculants currently…
View article: The microbiomes on the roots of wheat (Triticum aestivum L.) and rice (Oryza sativa L.) exhibit significant differences in structure between root types and along root axes
The microbiomes on the roots of wheat (Triticum aestivum L.) and rice (Oryza sativa L.) exhibit significant differences in structure between root types and along root axes Open
There is increasing interest in understanding how the microbial communities on roots can be manipulated to improve plant productivity. Root systems are not homogeneous organs but are comprised of different root types of various ages and an…
ZmMATE6 From Maize Encodes a Citrate Transporter That Enhances Aluminum Tolerance in Transgenic Arabidopsis Thaliana Open
Background: The yields of cereal crops grown on acidic soils are often reduced by aluminum (Al) toxicity because the prevalence of toxic Al 3+ cations increases as pH falls below 5.0. The Al-activated release from the roots of simple organ…
Genetics of phosphorus use efficiency in a MAGIC wheat population grown in the field Open
Phosphorus (P) is an essential plant nutrient and regular applications are essential in most farming systems to maintain high yields. Yet the P fertilizers applied to crops and pastures are derived from non-renewable resources. It is there…
Assessing How the Aluminum-Resistance Traits in Wheat and Rye Transfer to Hexaploid and Octoploid Triticale Open
The mechanisms of aluminum (Al) resistance in wheat and rye involve the release of citrate and malate anions from the root apices. Many of the genes controlling these processes have been identified and their responses to Al treatment descr…
The role of transposable elements in the evolution of aluminium resistance in plants Open
Aluminium (Al) toxicity can severely reduce root growth and consequently affect plant development and yield. A mechanism by which many species resist the toxic effects of Al relies on the efflux of organic anions (OAs) from the root apices…
View article: The Wheat <i>Lr67</i> Gene from the Sugar Transport Protein 13 Family Confers Multipathogen Resistance in Barley
The Wheat <i>Lr67</i> Gene from the Sugar Transport Protein 13 Family Confers Multipathogen Resistance in Barley Open
Fungal pathogens are a major constraint to global crop production; hence, plant genes encoding pathogen resistance are important tools for combating disease. A few resistance genes identified to date provide partial, durable resistance to …
View article: Altered Expression of the Malate-Permeable Anion Channel OsALMT4 Reduces the Growth of Rice Under Low Radiance
Altered Expression of the Malate-Permeable Anion Channel OsALMT4 Reduces the Growth of Rice Under Low Radiance Open
We examined the function of OsALMT4 in rice (Oryza sativa L.) which is a member of the aluminum-activated malate transporter family. Previous studies showed that OsALMT4 localizes to the plasma membrane and that expression in transgenic ri…