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Stem rust wheat

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https://www.readbyqxmd.com/read/30310930/correction-to-mapping-and-characterization-of-wheat-stem-rust-resistance-genes-srtm5-and-sr60-from-triticum-monococcum
#1
Shisheng Chen, Yan Guo, Jordan Briggs, Felix Dubach, Shiaoman Chao, Wenjun Zhang, Matthew N Rouse, Jorge Dubcovsky
In the original publication, the IWGSC assembly is incorrectly referenced.
October 11, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30271900/potential-for-re-emergence-of-wheat-stem-rust-in-the-united-kingdom
#2
Clare M Lewis, Antoine Persoons, Daniel P Bebber, Rose N Kigathi, Jens Maintz, Kim Findlay, Vanessa Bueno-Sancho, Pilar Corredor-Moreno, Sophie A Harrington, Ngonidzashe Kangara, Anna Berlin, Richard García, Silvia E Germán, Alena Hanzalová, David P Hodson, Mogens S Hovmøller, Julio Huerta-Espino, Muhammed Imtiaz, Javed Iqbal Mirza, Annemarie F Justesen, Rients E Niks, Ali Omrani, Mehran Patpour, Zacharias A Pretorius, Ramin Roohparvar, Hanan Sela, Ravi P Singh, Brian Steffenson, Botma Visser, Paul M Fenwick, Jane Thomas, Brande B H Wulff, Diane G O Saunders
Wheat stem rust, a devastating disease of wheat and barley caused by the fungal pathogen Puccinia graminis f. sp. tritici , was largely eradicated in Western Europe during the mid-to-late twentieth century. However, isolated outbreaks have occurred in recent years. Here we investigate whether a lack of resistance in modern European varieties, increased presence of its alternate host barberry and changes in climatic conditions could be facilitating its resurgence. We report the first wheat stem rust occurrence in the United Kingdom in nearly 60 years, with only 20% of UK wheat varieties resistant to this strain...
2018: Communications biology
https://www.readbyqxmd.com/read/30261155/genomic-dissection-of-nonhost-resistance-to-wheat-stem-rust-in-brachypodium-distachyon
#3
Rafael Della Coletta, Candice N Hirsch, Matthew N Rouse, Aaron Lorenz, David F Garvin
The emergence of new races of Puccinia graminis f.sp. tritici (Pgt), the causal pathogen of wheat stem rust, has spurred interest in developing durable resistance to this disease in wheat. Nonhost resistance holds promise to help control this and other diseases because it is durable against non-adapted pathogens. However, the genetic and molecular basis of nonhost resistance to wheat stem rust is poorly understood. In this study, the model grass Brachypodium distachyon (Brachypodium), a nonhost of Pgt, was used to genetically dissect nonhost resistance to wheat stem rust...
September 27, 2018: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/30028232/microsatellite-analysis-and-urediniospore-dispersal-simulations-support-the-movement-of-puccinia-graminis-f-sp-tritici-from-southern-africa-to-australia
#4
Botma Visser, Marcel Meyer, Robert F Park, Christopher Gilligan, Laura Burgin, Matthew C Hort, David Hodson, Zacharias A Pretorius
The Australian wheat stem rust (Puccinia graminis f. sp. tritici) population was shaped by the introduction of four exotic incursions into the country. It was previously hypothesized that at least two of these (races 326-1,2,3,5,6 and 194-1,2,3,5,6 first detected in 1969) had an African origin and moved across the Indian Ocean to Australia on high-altitude winds. We provide strong supportive evidence for this hypothesis by combining genetic analyses and complex atmospheric dispersion modelling. Genetic analysis of 29 Australian and South African P...
July 20, 2018: Phytopathology
https://www.readbyqxmd.com/read/29889626/the-barberry-eradication-program-in-minnesota-for-stem-rust-control-a-case-study
#5
Paul D Peterson
The Barberry Eradication Program was an unprecedented federal and state cooperative plant disease control campaign between 1918 and the late 1970s to remove common barberry ( Berberis vulgaris), the alternate host of Puccinia graminis f. sp. tritici, from the major centers of wheat production in the United States. Eradication of barberry has been credited with helping to reduce stem rust of wheat to a minor problem in the United States by the end of the campaign. The Barberry Eradication Program has also been viewed as a model for successful eradication based on its robust leadership, effective publicity and public cooperation, forceful quarantine laws, and adaptive eradication methods and procedures employed in its field operations...
August 25, 2018: Annual Review of Phytopathology
https://www.readbyqxmd.com/read/29844997/identification-of-stem-rust-resistance-genes-in-wheat-cultivars-in-china-using-molecular-markers
#6
Xiaofeng Xu, Depeng Yuan, Dandan Li, Yue Gao, Ziyuan Wang, Yang Liu, Siting Wang, Yuanhu Xuan, Hui Zhao, Tianya Li, Yuanhua Wu
Wheat stem rust caused by Puccinia graminis f. sp. tritici Eriks. & E. Henn. ( Pgt ), is a major disease that has been effectively controlled using resistance genes. The appearance and spread of Pgt races such as Ug99, TKTTF, and TTTTF, which are virulent to most stem rust-resistant genes currently deployed in wheat breeding programs, renewed the interest in breeding cultivars resistant to wheat stem rust. It is therefore important to investigate the levels of resistance or vulnerability of wheat cultivars to Pgt races...
2018: PeerJ
https://www.readbyqxmd.com/read/29795612/race-and-virulence-characterization-of-puccinia-graminis-f-sp-tritici-in-china
#7
Tian Ya Li, Yu Chen Ma, Xian Xin Wu, Si Chen, Xiao Feng Xu, Hao Wang, Yuan Yin Cao, Yuan Hu Xuan
Wheat stem rust was once the most destructive plant disease, but it has been largely controlled. However, to prevent future problems, the ongoing development of resistant wheat varieties requires knowledge of the changing virulence patterns for Pgt virulence of the fungus that causes wheat stem rust and the detection of new races. Surveys were conducted from 2013-2014 to determine the races of the Pgt present in China. Low levels of stem rust infections were found in China during this investigation and 11 Puccinia graminis f...
2018: PloS One
https://www.readbyqxmd.com/read/29614079/identification-and-characterization-of-wheat-stem-rust-resistance-gene-sr21-effective-against-the-ug99-race-group-at-high-temperature
#8
Shisheng Chen, Wenjun Zhang, Stephen Bolus, Matthew N Rouse, Jorge Dubcovsky
Wheat stem rust, caused by Puccinia graminis f. sp. tritici (Pgt), is a devastating foliar disease. The Ug99 race group has combined virulence to most stem rust (Sr) resistance genes deployed in wheat and is a threat to global wheat production. Here we identified a coiled-coil, nucleotide-binding leucine-rich repeat protein (NLR) completely linked to the Ug99 resistance gene Sr21 from Triticum monococcum. Loss-of-function mutations and transgenic complementation confirmed that this gene is Sr21. Sr21 transcripts were significantly higher at high temperatures, and this was associated with significant upregulation of pathogenesis related (PR) genes and increased levels of resistance at those temperatures...
April 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29529250/an-interspecific-barberry-hybrid-enables-genetic-dissection-of-non-host-resistance-to-the-stem-rust-pathogen-puccinia-graminis
#9
Radhika Bartaula, Arthur T O Melo, Bryan A Connolly, Yue Jin, Iago Hale
Stem rust, caused by Puccinia graminis (Pg), remains a devastating disease of wheat, and the emergence of new Pg races virulent on deployed resistance genes fuels the ongoing search for sources of durable resistance. Despite its intrinsic durability, non-host resistance (NHR) is largely unexplored as a protection strategy against Pg, partly due to the inherent challenge of developing a genetically tractable system within which NHR segregates. Here, we demonstrate that Pg's far less studied ancestral host, barberry (Berberis spp...
April 27, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29441083/a-genome-wide-association-study-of-field-and-seedling-response-to-individual-stem-rust-pathogen-races-reveals-combinations-of-race-specific-genes-in-north-american-spring-wheat
#10
Erena A Edae, Michael O Pumphrey, Matthew N Rouse
Stem rust of wheat caused by the fungal pathogen Puccinia graminis f. sp. tritici historically caused major yield losses of wheat worldwide. To understand the genetic basis of stem rust resistance in contemporary North American spring wheat, genome-wide association analysis (GWAS) was conducted on an association mapping panel comprised of 250 elite lines. The lines were evaluated in separate nurseries each inoculated with a different P. graminis f. sp. tritici race for 3 years (2013, 2015, and 2016) at Rosemount, Minnesota allowing the evaluation of race-specificity separate from the effect of environment...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29357813/dissection-of-the-multigenic-wheat-stem-rust-resistance-present-in-the-montenegrin-spring-wheat-accession-pi-362698
#11
Jason D Zurn, Matthew N Rouse, Shiaoman Chao, Meriem Aoun, Godwin Macharia, Colin W Hiebert, Zacharias A Pretorius, J Michael Bonman, Maricelis Acevedo
BACKGROUND: Research to identify and characterize stem rust resistance genes in common wheat, Triticum aestivum, has been stimulated by the emergence of Ug99-lineage races of the wheat stem rust pathogen, Puccinia graminis f. sp. tritici (Pgt), in Eastern Africa. The Montenegrin spring wheat landrace PI 362698 was identified as a source of Pgt resistance. This accession exhibits resistance to multiple Ug99-lineage and North American Pgt races at seedling and adult-plant stages. A recombinant inbred population was developed by crossing the susceptible line LMPG-6 with a single plant selection of PI 362698...
January 22, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29332944/fungal-pathogenesis-wheat-stem-rust-effectors-revealed
#12
Ursula Hofer
No abstract text is available yet for this article.
January 15, 2018: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/29164273/mapping-and-characterization-of-wheat-stem-rust-resistance-genes-srtm5-and-sr60-from-triticum-monococcum
#13
Shisheng Chen, Yan Guo, Jordan Briggs, Felix Dubach, Shiaoman Chao, Wenjun Zhang, Matthew N Rouse, Jorge Dubcovsky
The new stem rust resistance gene Sr60 was fine-mapped to the distal region of chromosome arm 5Am S, and the TTKSK-effective gene SrTm5 could be a new allele of Sr22. The emergence and spread of new virulent races of the wheat stem rust pathogen (Puccinia graminis f. sp. tritici; Pgt), including the Ug99 race group, is a serious threat to global wheat production. In this study, we mapped and characterized two stem rust resistance genes from diploid wheat Triticum monococcum accession PI 306540. We mapped SrTm5, a previously postulated gene effective to Ug99, on chromosome arm 7Am L, completely linked to Sr22...
March 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/29155326/genome-wide-identification-of-the-sweet-gene-family-in-wheat
#14
Yue Gao, Zi Yuan Wang, Vikranth Kumar, Xiao Feng Xu, De Peng Yuan, Xiao Feng Zhu, Tian Ya Li, Baolei Jia, Yuan Hu Xuan
The SWEET (sugars will eventually be exported transporter) family is a newly characterized group of sugar transporters. In plants, the key roles of SWEETs in phloem transport, nectar secretion, pollen nutrition, stress tolerance, and plant-pathogen interactions have been identified. SWEET family genes have been characterized in many plant species, but a comprehensive analysis of SWEET members has not yet been performed in wheat. Here, 59 wheat SWEETs (hereafter TaSWEETs) were identified through homology searches...
February 5, 2018: Gene
https://www.readbyqxmd.com/read/29078294/identification-and-characterization-of-sr13-a-tetraploid-wheat-gene-that-confers-resistance-to-the-ug99-stem-rust-race-group
#15
Wenjun Zhang, Shisheng Chen, Zewdie Abate, Jayaveeramuthu Nirmala, Matthew N Rouse, Jorge Dubcovsky
The Puccinia graminis f. sp. tritici ( Pgt ) Ug99 race group is virulent to most stem rust resistance genes currently deployed in wheat and poses a threat to global wheat production. The durum wheat ( Triticum turgidum ssp. durum ) gene Sr13 confers resistance to Ug99 and other virulent races, and is more effective at high temperatures. Using map-based cloning, we delimited a candidate region including two linked genes encoding coiled-coil nucleotide-binding leucine-rich repeat proteins designated CNL3 and CNL13...
November 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29075275/agronomic-traits-and-molecular-marker-identification-of-wheat-aegilops-caudata-addition-lines
#16
Wenping Gong, Ran Han, Haosheng Li, Jianmin Song, Hongfei Yan, Genying Li, Aifeng Liu, Xinyou Cao, Jun Guo, Shengnan Zhai, Dungong Cheng, Zhendong Zhao, Cheng Liu, Jianjun Liu
Aegilops caudata is an important gene source for wheat breeding. Intensive evaluation of its utilization value is an essential first step prior to its application in breeding. In this research, the agronomical and quality traits of Triticum aestivum - Ae. caudata additions B-G (homoeologous groups not identified) were analyzed and evaluated. Disease resistance tests showed that chromosome D of Ae. caudata might possess leaf rust resistance, and chromosome E might carry stem rust and powdery mildew resistance genes...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28979288/wheat-ammonium-transporter-amt-gene-family-diversity-and-possible-role-in-host-pathogen-interaction-with-stem-rust
#17
Tianya Li, Kai Liao, Xiaofeng Xu, Yue Gao, Ziyuan Wang, Xiaofeng Zhu, Baolei Jia, Yuanhu Xuan
Ammonium transporter (AMT) proteins have been reported in many plants, but no comprehensive analysis was performed in wheat. In this study, we identified 23 AMT members (hereafter TaAMTs) using a protein homology search in wheat genome. Tissue-specific expression analysis showed that TaAMT1;1a, TaAMT1;1b, and TaAMT1;3a were relatively more highly expressed in comparison with other TaAMTs. TaAMT1;1a, TaAMT1;1b, and TaAMT1;3a-GFP were localized in the plasma membrane in tobacco leaves, and TaAMT1;1a, TaAMT1;1b, and TaAMT1;3a successfully complemented a yeast 31019b strain in which ammonium uptake was deficient...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28947769/quantifying-airborne-dispersal-routes-of-pathogens-over-continents-to-safeguard-global-wheat-supply
#18
M Meyer, J A Cox, M D T Hitchings, L Burgin, M C Hort, D P Hodson, C A Gilligan
Infectious crop diseases spreading over large agricultural areas pose a threat to food security. Aggressive strains of the obligate pathogenic fungus Puccinia graminis f.sp. tritici (Pgt), causing the crop disease wheat stem rust, have been detected in East Africa and the Middle East, where they lead to substantial economic losses and threaten livelihoods of farmers. The majority of commercially grown wheat cultivars worldwide are susceptible to these emerging strains, which pose a risk to global wheat production, because the fungal spores transmitting the disease can be wind-dispersed over regions and even continents 1-11 ...
October 2017: Nature Plants
https://www.readbyqxmd.com/read/28856651/rapid-phenotyping-adult-plant-resistance-to-stem-rust-in-wheat-grown-under-controlled-conditions
#19
Adnan Riaz, Lee T Hickey
Stem rust (SR) or black rust caused by Puccinia graminis f. sp. tritici is one of the most common diseases of wheat (Triticum aestivum L.) crops globally. Among the various control measures, the most efficient and sustainable approach is the deployment of genetically resistant cultivars. Traditionally, wheat breeding programs deployed genetic resistance in cultivars, but unknowingly this is often underpinned by a single seedling resistance gene, which is readily overcome by the pathogen. Nowadays, adult plant resistance (APR) is a widely adopted form of rust resistance because more durable mechanisms often underpin it...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28856647/genetic-analysis-of-resistance-to-wheat-rusts
#20
Caixia Lan, Mandeep Singh Randhawa, Julio Huerta-Espino, Ravi P Singh
Leaf rust, stripe rust, and stem rust pose a significant threat to global wheat production. Growing rust resistant cultivars is the most efficient and environment friendly method to reduce yield losses. Genetic analysis is undertaken to identify genes and study their roles in conferring rust resistance in a given wheat background. This chapter summarizes the protocol for genetic analysis of rust resistance at both seedling and adult plant stages. Additionally, it examines statistical analysis and related software to characterize quantitative trait loci (QTL) linked with rust resistance...
2017: Methods in Molecular Biology
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