scholarly journals Corrigendum: High frequency of fungicide resistance‐associated mutations in the wheat yellow rust pathogen Puccinia striiformis f. sp. tritici

2021 ◽  
Vol 77 (11) ◽  
pp. 5304-5304
Keyword(s):  
High Frequency ◽  
Fungicide Resistance ◽  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Rust Pathogen

scholarly journals High frequency of fungicide resistance‐associated mutations in the wheat yellow rust pathogen Puccinia striiformis f. sp. tritici

2021 ◽  
Author(s):  
Nicola M. Cook ◽  
Soonie Chng ◽  
Tamsin L. Woodman ◽  
Rachael Warren ◽  
Richard P. Oliver ◽  
...  
Keyword(s):  
High Frequency ◽  
Fungicide Resistance ◽  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Rust Pathogen

Microsatellite Genotyping of the Wheat Yellow Rust Pathogen Puccinia striiformis

2017 ◽  
pp. 59-70 ◽  
Author(s):  
Sajid Ali ◽  
Muhammad R. Khan ◽  
Angelique Gautier ◽  
Zahoor A. Swati ◽  
Stephanie Walter
Keyword(s):  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Microsatellite Genotyping ◽  
Rust Pathogen

scholarly journals Genome Sequence Resources for the Wheat Stripe Rust Pathogen (Puccinia striiformis f. sp. tritici) and the Barley Stripe Rust Pathogen (Puccinia striiformis f. sp. hordei)

2018 ◽  
Vol 31 (11) ◽  
pp. 1117-1120 ◽  
Author(s):  
Chongjing Xia ◽  
Meinan Wang ◽  
Chuntao Yin ◽  
Omar E. Cornejo ◽  
Scot H. Hulbert ◽  
...  
Keyword(s):  
Stripe Rust ◽  
Molecular Mechanisms ◽  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Rapid Evolution ◽  
Host Adaptation ◽  
Rust Pathogen ◽  
Structural Differences ◽  
Barley Stripe Rust ◽  
Genomic Basis

Puccinia striiformis f. sp. tritici causes devastating stripe (yellow) rust on wheat and P. striiformis f. sp. hordei causes stripe rust on barley. Several P. striiformis f. sp. tritici genomes are available, but no P. striiformis f. sp. hordei genome is available. More genomes of P. striiformis f. sp. tritici and P. striiformis f. sp. hordei are needed to understand the genome evolution and molecular mechanisms of their pathogenicity. We sequenced P. striiformis f. sp. tritici isolate 93-210 and P. striiformis f. sp. hordei isolate 93TX-2, using PacBio and Illumina technologies and RNA sequencing. Their genomic sequences were assembled to contigs with high continuity and showed significant structural differences. The circular mitochondria genomes of both were complete. These genomes provide high-quality resources for deciphering the genomic basis of rapid evolution and host adaptation, identifying genes for avirulence and other important traits, and studying host-pathogen interactions.

scholarly journals Origin, Migration Routes and Worldwide Population Genetic Structure of the Wheat Yellow Rust Pathogen Puccinia striiformis f.sp. tritici

2014 ◽  
Vol 10 (1) ◽  
pp. e1003903 ◽  
Author(s):  
Sajid Ali ◽  
Pierre Gladieux ◽  
Marc Leconte ◽  
Angélique Gautier ◽  
Annemarie F. Justesen ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Migration Routes ◽  
Worldwide Population ◽  
Rust Pathogen

Pathotypic evolution in Puccinia striiformis in India during 1995 - 2004

2007 ◽  
Vol 58 (6) ◽  
pp. 602 ◽  
Author(s):  
M. Prashar ◽  
S. C. Bhardwaj ◽  
S. K. Jain ◽  
D. Datta
Keyword(s):  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Low Frequency ◽  
Wheat Cultivars ◽  
Northern India ◽  
The North ◽  
Rust Pathogen ◽  
South Hills ◽  
First Time ◽  
North Western

Yellow rust pathogen (Puccinia striiformis) distribution was monitored in different wheat-production zones (north-western plains zone, north hills zone, and south hills zone) of India during the last decade (1994–2004). Studies indicated the predominance of 3 pathotypes: 46S102 (46E149), 47S103 (47E148), and 46S119 (46E149+Yr9) in the north-western plains zone. These pathotypes were detected for the first time in 1995–96 and are evolving frequently. Another pathotype (78S84), although present in low frequency, was first detected from northern India and is virulent on Yr9 and Yr27, posing a major threat to cv. PBW343, which carries these genes. The high altitudes of the northern hills where very primitive wheat cultivars are grown showed less variability for the yellow rust pathogen. Continued breeding efforts and replacement of cultivars have resulted in low specialisation in the yellow rust pathogen in the south hills zone and pathotype 38S102 predominated in this area during the last decade.

scholarly journals Mutations in Wheat Exhibiting Growth-Stage-Specific Resistance to Biotrophic Fungal Pathogens

2004 ◽  
Vol 17 (11) ◽  
pp. 1242-1249 ◽  
Author(s):  
Phil H. Smith ◽  
John A. Howie ◽  
Anthony J. Worland ◽  
Rebecca Stratford ◽  
Lesley A. Boyd
Keyword(s):  
Fungal Pathogens ◽  
Growth Stage ◽  
Puccinia Striiformis ◽  
Specific Resistance ◽  
Yellow Rust ◽  
Dominant Mutation ◽  
Resistance Phenotype ◽  
The Third ◽  
Enhanced Resistance ◽  
Seedling Leaf

Two mutants were isolated in wheat that showed enhanced resistance towards Puccinia striiformis f. sp. tritici, the fungal causal agent of yellow rust. The altered phenotype of I3-48 is due to a minimum of two mutation events, each showing a partial, additive effect, with one mutation segregating with a deletion on the long arm of chromosome 4D. In the case of I3-54, the enhanced resistance is due to a single, dominant mutation. In both mutants, the expression of the enhanced resistance is growth-stage specific. With I3-54, the full resistance phenotype is apparent from the third seedling leaf onwards, while with I3-48, a full resistance phenotype is only seen on the tenth and subsequent leaves. In addition to the enhanced resistance towards yellow rust, I3-48 also shows enhanced resistance towards brown rust, and I3-54 shows enhanced resistance to powdery mildew.

scholarly journals Evolution of Physiologic Races and Virulence of Puccinia striiformis on Wheat in Syria and Lebanon

Plant Disease ◽  
2002 ◽  
Vol 86 (5) ◽  
pp. 499-504 ◽  
Author(s):  
A. H. Yahyaoui ◽  
M. S. Hakim ◽  
M. El Naimi ◽  
N. Rbeiz
Keyword(s):  
Resistance Genes ◽  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Wheat Breeding ◽  
Natural Conditions ◽  
Breeding Programs ◽  
Land Race ◽  
Physiologic Races ◽  
Resistant Genotypes

Virulence-avirulence phenotypes of Puccinia striiformis isolates collected in Lebanon and Syria were determined on seedlings of the wheat-yellow rust differential genotypes. We found 25 and 11 physiologic races over 6 years (1994 to 1999) in Syria and Lebanon, respectively. The composition of physiologic races found in Syria and Lebanon differed greatly between 1994 and 1999. Races identified in 1999, such as 230E150 and 230E134, have wider spectra of virulence on resistant genotypes than races collected in 1994. In Lebanon, three races were found in 1994 compared with six races in 1999. Yellow rust differential genotypes were used in a trap nursery to monitor yellow rust populations under natural conditions. Races identified from cultivars in the trap nursery in Syria and Lebanon, and from land race cultivars in Iraq, were recovered among the races identified from farm fields. Yellow rust samples were collected from Yemen, and none of the races identified from Yemen samples were identical to those in Syria and Lebanon. Virulence frequencies in the yellow rust population on the differential genotypes tested in the trap nurseries were above 70% for some resistance genes. Yellow rust populations in Syria and Lebanon have diverse virulence phenotypes. P. striiformis populations appear to be changing over, and this would be an important consideration for wheat breeding programs in the region.

scholarly journals Potential Infection Risks of the Wheat Stripe Rust and Stem Rust Pathogens on Barberry in Asia and Southeastern Europe

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 957
Author(s):  
Parimal Sinha ◽  
Xianming Chen
Keyword(s):  
Stripe Rust ◽  
Stem Rust ◽  
Puccinia Striiformis ◽  
Infection Risk ◽  
Southeastern Europe ◽  
Alternate Host ◽  
Modeling Framework ◽  
Risk Levels ◽  
Rust Pathogen ◽  
Very High

Barberry (Berberis spp.) is an alternate host for both the stripe rust pathogen, Puccinia striiformis f. sp. tritici (Pst), and the stem rust pathogen, P. graminis f. sp. tritici (Pgt), infecting wheat. Infection risk was assessed to determine whether barberry could be infected by either of the pathogens in Asia and Southeastern Europe, known for recurring epidemics on wheat and the presence of barberry habitats. For assessing infection risk, mechanistic infection models were used to calculate infection indices for both pathogens on barberry following a modeling framework. In East Asia, Bhutan, China, and Nepal were found to have low risks of barberry infection by Pst but high risks by Pgt. In Central Asia, Azerbaijan, Iran, Kazakhstan, southern Russia, and Uzbekistan were identified to have low to high risks of barberry infection for both Pst and Pgt. In Northwest Asia, risk levels of both pathogens in Turkey and the Republic of Georgia were determined to be high to very high. In Southwest Asia, no or low risk was found. In Southeastern Europe, similar high or very high risks for both pathogens were noted for all countries. The potential risks of barberry infection by Pst and/or Pgt should provide guidelines for monitoring barberry infections and could be valuable for developing rust management programs in these regions. The framework used in this study may be useful to predict rust infection risk in other regions.

Distribution of Puccinia striiformis f. sp. tritici races and virulence in wheat growing regions of Kenya from 1970 TO 2014

Plant Disease ◽  
2021 ◽  
Author(s):  
Mercy Wamalwa ◽  
Ruth Wanyera ◽  
Julian Rodriguez-Algaba ◽  
Lesley Boyd ◽  
James Owuoche ◽  
...  
Keyword(s):  
Stripe Rust ◽  
Fungal Pathogen ◽  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Stripe Rust Resistance ◽  
Scar Markers ◽  
Seedling Resistance ◽  
Sequence Characterized Amplified Region ◽  
Triticum Spp ◽  
Virulence Diversity

Stripe rust, caused by the fungal pathogen Puccinia striiformis f. sp. tritici (Pst), is a major threat to wheat (Triticum spp.) production worldwide. The objective of this study was to determine the virulence of Pst races prevalent in the main wheat growing regions of Kenya, which includes Mt. Kenya, Eastern Kenya, and the Rift Valley (Central, Southern, and Northern Rift). Fifty Pst isolates collected from 1970 to 1992 and from 2009 to 2014 were virulence phenotyped using stripe rust differential sets, and 45 isolates were genotyped with sequence characterized amplified region (SCAR) markers to differentiate among the isolates and identify aggressive strains PstS1 and PstS2. Virulence corresponding to stripe rust resistance genes Yr1, Yr2, Yr3, Yr6, Yr7, Yr8, Yr9, Yr17, Yr25, Yr27 and the seedling resistance in genotype Avocet S were detected. Ten races were detected in the Pst samples obtained from 1970 to 1992, and three additional races were detected from 2009 to 2014, with a single race being detected in both periods. The SCAR markers detected both Pst1 and Pst2 strains in the collection. Increasing Pst virulence was found in the Kenyan Pst population, and that diverse Pst race groups dominated different wheat growing regions. Moreover, recent Pst races in east Africa indicated possible migration of some race groups into Kenya from other regions. This study is important in understanding Pst evolution and virulence diversity and useful in breeding wheat cultivars with effective resistance to stripe rust. Keywords: pathogenicity, Puccinia f. sp. tritici stripe (yellow) rust, Triticum aestivum

scholarly journals Reactions of Triticum urartu accessions to two races of the wheat yellow rust pathogen

2018 ◽  
Vol 6 (5) ◽  
pp. 509-515
Author(s):  
Jibin Xiao ◽  
Lingli Dong ◽  
Huaibing Jin ◽  
Juncheng Zhang ◽  
Kunpu Zhang ◽  
...  
Keyword(s):  
Yellow Rust ◽  
Triticum Urartu ◽  
Rust Pathogen
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