QTL identification and microphenotype characterisation of the developmentally regulated yellow rust resistance in the UK wheat cultivar Guardian

  title={QTL identification and microphenotype characterisation of the developmentally regulated yellow rust resistance in the UK wheat cultivar Guardian},
  author={James P E Melichar and Simon T. Berry and Claire L. Newell and Ruth Maccormack and Lesley Ann Boyd},
  journal={Theoretical and Applied Genetics},
Yellow rust (causal agent: Puccinia striiformis f.sp. tritici) resistance in the UK wheat cultivar Guardian is developmentally regulated, resistance increasing as the plant matures. Yellow rust resistance was assessed under field conditions on plants after ear emergence to ensure maximum expression of resistance. Three quantitative trait loci (QTL) for yellow rust resistance were identified, being located on chromosomes 1B (QPst.jic-1B), 2D (QPst.jic-2D) and 4B (QPst.jic-4B). The largest… 

Characterization of Yr54 and other genes associated with adult plant resistance to yellow rust and leaf rust in common wheat Quaiu 3

Quantitative trait loci associated with YR and LR resistance in the RILs were identified using Diversity Arrays Technology and simple sequence repeat markers and Yr54 is a newly characterized APR gene which can be combined with other genes by using closely linked molecular markers.

Identifying QTL for high-temperature adult-plant resistance to stripe rust (Puccinia striiformis f. sp. tritici) in the spring wheat (Triticum aestivum L.) cultivar ‘Louise’

One major quantitative trait loci, designated QYrlo.wpg-2BS, associated with HTAP resistance in Louise, was detected on chromosome 2BS within a 16.9 cM region flanked by Xwmc474 and Xgwm148, and is currently being used in marker-based forward breeding strategies to transfer the target region into adapted germplasm to improve the durability of resistance in resulting cultivars.

QTL characterization of resistance to leaf rust and stripe rust in the spring wheat line Francolin#1

Abstract Growing resistant wheat varieties is a key method of controlling two important wheat diseases, leaf rust and stripe rust. We analyzed quantitative trait loci (QTL) to investigate adult plant

Genetic characterisation and fine mapping of sources of durable resistance to stripe rust in selected wheat genotypes

Improved characterisation of the QTL has led to the identification of QTL-associated markers, allowing for more efficient selection in marker-assisted breeding schemes, and it also paves the way for map-based cloning.

Quantitative Trait Loci Mapping of Adult Plant and Seedling Resistance to Stripe Rust (Puccinia striiformis Westend.) in a Multiparent Advanced Generation Intercross Wheat Population

Stripe rust caused by the biotrophic fungus Puccinia striiformis Westend. is one of the most important diseases of wheat worldwide, causing high yield and quality losses. Growing resistant cultivars

Genome-Wide Mapping of Quantitative Trait Loci Conferring All-Stage and High-Temperature Adult-Plant Resistance to Stripe Rust in Spring Wheat Landrace PI 181410

The landrace was characterized to have both race-specific all-stage resistance and nonrace-specific high-temperature adult-plant (HTAP) resistance and three kompetitive allele specific PCR (KASP) markers were developed for incorporating this gene into new wheat cultivars.

Title Mapping QTL for Resistance to New Virulent Races of Wheat Stripe Rust from Two Argentinean Wheat Cultivars Permalink

During the last two decades, new virulent and aggressive races of Puccinia striiformis Westend. f. sp. tritici (Pst) have spread worldwide, causing devastating epidemics and prompting the search for

The genetic characterisation of stripe rust resistance in the German wheat cultivar Alcedo

Stripe rust resistance in the German winter wheat cv. Alcedo has been described as durable, the resistance having remained effective when grown extensively in Germany and Eastern Europe between 1975

New Races of Puccinia striiformis Found in Europe Reveal Race Specificity of Long-Term Effective Adult Plant Resistance in Wheat.

The results stress the need of maintaining high genetic diversity for disease resistance in wheat and of using pathogen isolates of diverse origin in studies of host resistance genetics.



Histopathology and PR-protein markers provide insight into adult plant resistance to stripe rust of wheat.

RT PCR experiments with sequences of pathogenesis-related proteins resulted in a slightly stronger induction of PR 1, 2 and 5, known markers for the hypersensitive reaction, and peroxidases in MP 51, whereas a second band for chitinases was detected in MP 35 only.

Molecular marker mapping of leaf rust resistance gene lr46 and its association with stripe rust resistance gene yr29 in wheat.

This study established the precise genomic location of gene Lr46 at the distal end of the long arm of wheat chromosome 1B and identified a gene that is closely linked to Lr 46 and confers moderate levels of adult plant resistance to stripe rust.

A genetic analysis of adult plant resistance to stripe rust in the wheat cultivar Kariega

Analysis of field data for adult plant stripe rust resistance identified two major and two minor QTLs in the resistant cultivar Kariega, and the results of the QTL analysis demonstrate its higher resolution power compared to the mixture model analysis by detecting the presence of minorQTLs.

Expression of adult resistance to stripe rust at different growth stages of wheat

Evaluating the expression of adult resistances at various growth stages in the greenhouse and in the field suggested that lower ITs of the cultivars were generally associated with longer LP and that adult resistance was best expressed at this growth stage.

Genetics of resistance to wheat leaf rust.

  • J. Kolmer
  • Biology, Medicine
    Annual review of phytopathology
  • 1996
This work has confirmed that adult-plant resistance genes Lr13 and Lr34 singly and together have provided the most durable resistance to leaf rust in wheat throughout the world.

Leaf tip necrosis, molecular markers and β1-proteasome subunits associated with the slow rusting resistance genes Lr46/Yr29

It is shown that leaf tip necrosis (LTN) is also pleiotropic or closely linked to the Lr46/Yr29 locus and suggested that a new Ltn gene designation should be given to this locus, in addition to the one that already exists for Lr34/yr18.

Histological investigation of stripe rust (Puccinia striiformis f.sp. tritici) development in resistant and susceptible wheat cultivars

The wheat cultivar Kariega expresses complete adult plant resistance against stripe rust, whereas cv. Avocet S is susceptible. Using confocal laser scanning microscopy, initial fungal penetration

Field assessment of quantitative resistance to yellow rust in ten spring bread wheat cultivars

It is concluded that quantitative resistance is a stable trait, in the sense that cultivar rankings are hardly affected by environment, and the contribution of infection growth to the development of yellow rust was demonstrated.

Wheat mutants showing altered adult plant disease resistance

Wheat mutants, selected on an altered resistance phenotype to Puccinia striiformis f.sp. tritici, the causal agent of yellow rust, were assessed in greenhouse tests to determine the growth stage at

Wheat Rusts: An Atlas of Resistance Genes

This work focuses on Wheat Rusts and the Genetic Bases on Disease Resistance, and Methodologies in Wheat Rust Disease, and a Coordinated Strategy for Rust Control.