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wheat Stripe rust

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https://www.readbyqxmd.com/read/29449594/rapid-identification-of-a-stripe-rust-resistant-gene-in-a-space-induced-wheat-mutant-using-specific-locus-amplified-fragment-slaf-sequencing
#1
Jun-Liang Yin, Zheng-Wu Fang, Cai Sun, Peng Zhang, Xing Zhang, Chen Lu, Shu-Ping Wang, Dong-Fang Ma, Yong-Xing Zhu
Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most devastating diseases of wheat. Resistant cultivars are the preferred strategy to control the disease. Space-induced wheat mutant R39 has adult-plant resistance (APR) to Pst. Genetic analysis indicated that a single recessive gene, designated YrR39, was responsible for the APR of R39 to Pst. Bulked segregant analysis (BSA) combined with a SLAF sequencing (SLAF-seq) strategy was used to fine-map YrR39 to a 17.39 Mb segment on chromosome 4B...
February 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29441130/cytogenetics-and-stripe-rust-resistance-of-wheat-thinopyrum-elongatum-hybrid-derivatives
#2
Daiyan Li, Dan Long, Tinghui Li, Yanli Wu, Yi Wang, Jian Zeng, Lili Xu, Xing Fan, Lina Sha, Haiqin Zhang, Yonghong Zhou, Houyang Kang
Background: Amphidiploids generated by distant hybridization are commonly used as genetic bridge to transfer desirable genes from wild wheat species into cultivated wheat. This method is typically used to enhance the resistance of wheat to biotic or abiotic stresses, and to increase crop yield and quality. Tetraploid Thinopyrum elongatum exhibits strong adaptability, resistance to stripe rust and Fusarium head blight, and tolerance to salt, drought, and cold. Results: In the present study, we produced hybrid derivatives by crossing and backcrossing the Triticum durum-Th...
2018: Molecular Cytogenetics
https://www.readbyqxmd.com/read/29415008/genome-wide-associations-for-multiple-pest-resistances-in-a-northwestern-united-states-elite-spring-wheat-panel
#3
Kaori Ando, Sheri Rynearson, Kebede T Muleta, Jhonatan Gedamu, Bedada Girma, Nilsa A Bosque-Pérez, Ming-Shun Chen, Mike O Pumphrey
Northern areas of the western United States are one of the most productive wheat growing regions in the United States. Increasing productivity through breeding is hindered by several biotic stresses which slow and constrain targeted yield improvement. In order to understand genetic variation for stripe rust (Puccinia striiformis f. sp. tritici), Septoria tritici blotch (Mycosphaerella graminicola), and Hessian fly (Mayetiola destructor) in regional germplasm, a panel of 408 elite spring wheat lines was characterized and genotyped with an Illumina 9K wheat single nucleotide polymorphism (SNP) chip to enable genome-wide association study (GWAS) analyses...
2018: PloS One
https://www.readbyqxmd.com/read/29411480/genome-re-sequencing-and-simple-sequence-repeat-markers-reveal-the-existence-of-divergent-lineages-in-the-canadian-puccinia-striiformis-f-sp-tritici-population-with-extensive-dna-methylation
#4
Gurcharn S Brar, Sajid Ali, Dinah Qutob, Stephen Ambrose, Kun Lou, Ron Maclachlan, Curtis J Pozniak, Yong-Bi Fu, Andrew G Sharpe, Hadley R Kutcher
Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is an important disease in Canada. The worldwide genetic structure of Pst populations have been characterized, excluding Canada. Here, we elucidated the genetic structure of the western Canadian Pst population using molecular markers, revealing the presence of four divergent lineages with predominantly clonal structure. In the worldwide context, two previously reported lineages were identified: PstS0 (22%), representing an old northwestern-European, and PstS1 (35%), an invasive warm-temperature adapted...
February 6, 2018: Environmental Microbiology
https://www.readbyqxmd.com/read/29393562/a-novel-mads-box-transcription-factor-pstmcm1-1-is-responsible-for-full-virulence-of-puccinia-striiformis-f-sp-tritici
#5
Xiaoguo Zhu, Min Jiao, Jia Guo, Peng Liu, Chenglong Tan, Qian Yang, Yang Zhang, Ralf Thomas Voegele, Zhensheng Kang, Jun Guo
In many eukaryotes, transcription factor MCM1 gene plays crucial roles in regulating mating processes and pathogenesis by interacting with other co-factors. However, little is known about the role of MCM1 in rust fungi. Here, we identified two MCM1 orthologs, PstMCM1-1 and PstMCM1-2, in the stripe rust pathogen Puccinia striiformis f. sp. tritici (Pst). Sequence analysis indicated that both PstMCM1-1 and PstMCM1-2 contain conserved MADS domains and that PstMCM1-1 belongs to a group of SRF-like proteins that are evolutionarily specific to rust fungi...
February 2, 2018: Environmental Microbiology
https://www.readbyqxmd.com/read/29321647/molecular-marker-assisted-breeding-and-genome-composition-analysis-of-zhengmai-7698-an-elite-winter-wheat-cultivar
#6
Chun-Xin Li, Wei-Gang Xu, Rui Guo, Jian-Zhou Zhang, Xue-Li Qi, Lin Hu, Ming-Zhong Zhao
Zhengmai 7698 is an elite winter wheat variety widely cultivated in the Southern regions of the Yellow-Huai River Valley of China. Here, we report the molecular markers used for breeding Zhengmai 7698 and the genome composition of this cultivar revealed using genome-wide SNPs. A total of 26 DNA markers derived from the genes controlling gluten protein quality, grain hardness, flour color, disease resistance, or pre-harvesting sprouting resistance were used during breeding. Consequently, Zhengmai 7698 had strong gluten, high grain hardness index, white flour color, and high levels of resistance to powdery mildew, stripe rust infections, and pre-harvesting sprouting...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29303685/characterization-of-novel-gene-yr79-and-four-additional-qtl-for-all-stage-and-high-temperature-adult-plant-resistance-to-stripe-rust-in-spring-wheat-pi-182103
#7
Junyan Feng, Meinan Wang, Deven R See, Shiaoman Chao, You-Liang Zheng, Xianming Chen
Stripe rust, caused by Puccinia striiformis f. sp. tritici, is an important disease of wheat worldwide. Exploring new resistance genes is essential for breeding resistant wheat cultivars. PI 182103, a spring wheat landrace originally from Pakistan, has shown a high level of resistance to stripe rust in fields for many years, but genes for resistance to stripe rust in the variety have not been studied. To map the resistance gene(s) in PI 182103, 185 recombinant inbred lines (RILs) were developed from a cross with Avocet Susceptible (AvS)...
January 5, 2018: Phytopathology
https://www.readbyqxmd.com/read/29274571/tantf2-a-contributor-for-wheat-resistance-to-the-stripe-rust-pathogen
#8
Qiong Zhang, Bing Wang, Jinping Wei, Xiaojie Wang, Qingmei Han, Zhensheng Kang
Nuclear Transport Factor 2 (NTF2) functions as a critical regulator in balancing the GTP-and GDP-bound forms of Ran, a class of evolutionarily conserved small GTP-binding protein. During the incompatible interaction between wheat-Puccinia striiformis f. sp. tritici (Pst), a cDNA fragment encoding a putative wheat NTF2 gene was found to be significantly induced, suggesting a potential role in wheat resistance to Pst. In this work, the full length of TaNTF2 was obtained, with three copies located on 7A, 7B and 7D chromosomes, respectively...
December 16, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29251427/a-novel-wheat-nac-transcription-factor-tanac30-negatively-regulates-resistance-of-wheat-to-stripe-rust
#9
Bing Wang, Jinping Wei, Na Song, Ning Wang, Zhensheng Kang
NAC transcription factors are widespread in the plant kingdom and play essential roles in the transcriptional regulation of defense responses. In this study, we isolated a novel NAC transcription factor gene, TaNAC30, from a cDNA library constructed from wheat (Triticum aestivum) plants inoculated with the stripe rust pathogen Puccinia striiformis f. sp. tritici (Pst). TaNAC30 contains a typical NAM domain and localizes to the nucleus. Yeast one-hybrid assays revealed that TaNAC30 exhibits transcriptional activity and that its C-terminus is necessary for the activation of transcription...
December 18, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/29183031/novel-pcr-assays-for-the-detection-of-biological-agents-responsible-for-wheat-rust-diseases-puccinia-triticina-and-puccinia-striiformis-f-sp-tritici
#10
Adam Kuzdraliński, Anna Kot, Hubert Szczerba, Agnieszka Ostrowska, Michał Nowak, Marta Muszyńska, Michał Lechowski, Paweł Muzyka
The species Puccinia triticina (Pt) and Puccinia striiformis f. sp. tritici (Pst) are devastating cereal pathogens that cause leaf and stripe rust diseases. We developed PCR assays for the species-specific detection of Pt and Pst, 2 biological agents that cause wheat rust disease. For each pathogen, we validated 3 primer sets that target the second largest subunits of the RNA polymerase II (rpb2) and β-tubulin 1 (tub1) genes. The specificities of the primers were verified using naturally infected plant materials with visual symptoms of disease...
November 29, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29177504/pathogenomic-analysis-of-wheat-yellow-rust-lineages-detects-seasonal-variation-and-host-specificity
#11
Vanessa Bueno-Sancho, Antoine Persoons, Amelia Hubbard, Luis Enrique Cabrera-Quio, Clare M Lewis, Pilar Corredor-Moreno, Daniel C E Bunting, Sajid Ali, Soonie Chng, David P Hodson, Ricardo Madariaga Burrows, Rosie Bryson, Jane Thomas, Sarah Holdgate, Diane G O Saunders
Recent disease outbreaks caused by (re-)emerging plant pathogens have been associated with expansions in pathogen geographic distribution and increased virulence. For example, in the past two decades' wheat yellow (stripe) rust, Puccinia striiformis f. sp. tritici, has seen the emergence of new races that are adapted to warmer temperatures, have expanded virulence profiles, and are more aggressive than previous races, leading to wide-scale epidemics. Here, we used field-based genotyping to generate high-resolution data on P...
November 21, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/29137188/physical-localization-of-a-locus-from-agropyron-cristatum-conferring-resistance-to-stripe-rust-in-common-wheat
#12
Zhi Zhang, Liqiang Song, Haiming Han, Shenghui Zhou, Jinpeng Zhang, Xinming Yang, Xiuquan Li, Weihua Liu, Lihui Li
Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most destructive diseases of wheat (Triticum aestivum L.) worldwide. Agropyron cristatum (L.) Gaertn. (2n = 28, PPPP), one of the wild relatives of wheat, exhibits resistance to stripe rust. In this study, wheat-A. cristatum 6P disomic addition line 4844-12 also exhibited resistance to stripe rust. To identify the stripe rust resistance locus from A. cristatum 6P, ten translocation lines, five deletion lines and the BC₂F₂ and BC₃F₂ populations of two wheat-A...
November 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29125778/isolation-and-molecular-cytogenetic-characterization-of-a-wheat-leymus-mollis-double-monosomic-addition-line-and-its-progenies-with-resistance-to-stripe-rust
#13
Xiaofei Yang, Xin Li, Changyou Wang, Chunhuan Chen, Zengrong Tian, Wanquan Ji
A common wheat - Leymus mollis (2n = 4x = 28, NsNsXmXm) double monosomic addition line, M11003-4-3-8/13/15 (2n = 44 = 42T.a + L.m2 + L.m3), with stripe rust resistance was developed (where T.a represents Triticum aestivum chromosome, L.m represents L. mollis chromosome, and L.m2/3 represents L. mollis chromosome of homoeologous groups 2 and 3). The progenies of line M11003-4-3-8/13/15 were characterized by cytological observation, specific molecular markers, fluorescence in situ hybridization (FISH), and genomic in situ hybridization (GISH)...
November 10, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/29070517/host-induced-gene-silencing-of-the-mapkk-gene-psfuz7-confers-stable-resistance-to-wheat-stripe-rust
#14
Xiaoguo Zhu, Tuo Qi, Qian Yang, Fuxin He, Chenglong Tan, Wei Ma, Ralf Thomas Voegele, Zhensheng Kang, Jun Guo
RNA interference (RNAi) is a powerful genetic tool to accelerate research in plant biotechnology and to control biotic stresses by manipulating target gene expression. However, the potential of RNAi in wheat to efficiently and durably control the devastating stripe rust fungus Puccinia striiformis f. sp. tritici (Pst), remained largely under explored, so far. To address this issue, we generated transgenic wheat lines expressing double-stranded RNA targeting PsFUZ7 transcripts of Pst. We analyzed expression of PsFUZ7 and related genes, and resistance traits of the transgenic wheat lines...
October 25, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29067018/molecular-characterization-of-novel-totivirus-like-double-stranded-rnas-from-puccinia-striiformis-f-sp-tritici-the-causal-agent-of-wheat-stripe-rust
#15
Li Zheng, Xia Lu, Xiaofei Liang, Shuchang Jiang, Jing Zhao, Gangming Zhan, Peng Liu, Jianhui Wu, Zhensheng Kang
Characterization of newly isolated mycoviruses may contribute to understanding of the evolution and diversity of viruses. Here, a deep sequencing approach was used to analyze the double-stranded RNA (dsRNA) mycoviruses isolated from field-collected P. striiformis samples in China. Database searches showed the presence of at least four totivirus-like sequences, termed Puccinia striiformis virus 1 to 4 (PsV1 to 4). All of these identified sequences contained two overlapping open reading frames (ORFs) which encode a putative coat protein (CP) and an RNA-dependent RNA polymerase (RdRp) showing similar structures to members of the genus Totivirus...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28965125/rapid-identification-of-an-adult-plant-stripe-rust-resistance-gene-in-hexaploid-wheat-by-high-throughput-snp-array-genotyping-of-pooled-extremes
#16
Jianhui Wu, Shengjie Liu, Qilin Wang, Qingdong Zeng, Jingmei Mu, Shuo Huang, Shizhou Yu, Dejun Han, Zhensheng Kang
High-throughput SNP array analysis of pooled extreme phenotypes in a segregating population by KASP marker genotyping permitted rapid, cost-effective location of a stripe rust resistance QTL in wheat. German wheat cultivar "Friedrichswerther" has exhibited high levels of adult plant resistance (APR) to stripe rust in field environments for many years. F2:3 lines and F6 recombinant inbred line (RILs) populations derived from a cross between Friedrichswerther and susceptible landrace Mingxian 169 were evaluated in the field in 2013, 2016 and 2017...
January 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28952421/genome-wide-association-mapping-of-loci-for-resistance-to-stripe-rust-in-north-american-elite-spring-wheat-germplasm
#17
Jayfred Gaham Godoy, Sheri Rynearson, Xianming Chen, Michael Pumphrey
Stripe rust, caused by Puccinia striiformis Westend. f. sp. tritici Erikss. (Pst), is a major yield-limiting foliar disease of wheat (Triticum aestivum L.) worldwide. In this study, the genetic variability of elite spring wheat germplasm from North America was investigated to characterize the genetic basis of effective all-stage and adult plant resistance (APR) to stripe rust. A genome-wide association study (GWAS) was conducted using 237 elite spring wheat lines genotyped with an Illumina Infinium 90K SNP array...
September 27, 2017: Phytopathology
https://www.readbyqxmd.com/read/28913655/quantitative-trait-loci-for-resistance-to-stripe-rust-of-wheat-revealed-using-global-field-nurseries-and-opportunities-for-stacking-resistance-genes
#18
Firdissa E Bokore, Richard D Cuthbert, Ron E Knox, Harpinder S Randhawa, Colin W Hiebert, Ron M DePauw, Asheesh K Singh, Arti Singh, Andrew G Sharpe, Amidou N'Diaye, Curtis J Pozniak, Curt McCartney, Yuefeng Ruan, Samia Berraies, Brad Meyer, Catherine Munro, Andy Hay, Karim Ammar, Julio Huerta-Espino, Sridhar Bhavani
Quantitative trait loci controlling stripe rust resistance were identified in adapted Canadian spring wheat cultivars providing opportunity for breeders to stack loci using marker-assisted breeding. Stripe rust or yellow rust, caused by Puccinia striiformis Westend. f. sp. tritici Erikss., is a devastating disease of common wheat (Triticum aestivum L.) in many regions of the world. The objectives of this research were to identify and map quantitative trait loci (QTL) associated with stripe rust resistance in adapted Canadian spring wheat cultivars that are effective globally, and investigate opportunities for stacking resistance...
December 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28881438/host-induced-gene-silencing-of-an-important-pathogenicity-factor-pscpk1-in-puccinia-striiformis-f-sp-tritici-enhances-resistance-of-wheat-to-stripe-rust
#19
Tuo Qi, Xiaoguo Zhu, Chenlong Tan, Peng Liu, Jia Guo, Zhensheng Kang, Jun Guo
Rust fungi are devastating plant pathogens and cause a large economic impact on wheat production worldwide. To overcome this rapid loss of resistance in varieties, we generated stable transgenic wheat plants expressing short interfering RNAs (siRNAs) targeting potentially vital genes of Puccinia striiformis f. sp. tritici (Pst). Protein kinase A (PKA) has been proved to play important roles in regulating the virulence of phytopathogenic fungi. PsCPK1, a PKA catalytic subunit gene from Pst, is highly induced at the early infection stage of Pst...
September 7, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28878791/characterization-and-mapping-of-leaf-rust-and-stripe-rust-resistance-loci-in-hexaploid-wheat-lines-uc1110-and-pi610750-under-mexican-environments
#20
Caixia Lan, Iago L Hale, Sybil A Herrera-Foessel, Bhoja R Basnet, Mandeep S Randhawa, Julio Huerta-Espino, Jorge Dubcovsky, Ravi P Singh
Growing resistant wheat varieties is a key method of minimizing the extent of yield losses caused by the globally important wheat leaf rust (LR) and stripe rust (YR) diseases. In this study, a population of 186 F8 recombinant inbred lines (RILs) derived from a cross between a synthetic wheat derivative (PI610750) and an adapted common wheat line (cv. "UC1110") were phenotyped for LR and YR response at both seedling and adult plant stages over multiple seasons. Using a genetic linkage map consisting of single sequence repeats and diversity arrays technology markers, in combination with inclusive composite interval mapping analysis, we detected a new LR adult plant resistance (APR) locus, QLr...
2017: Frontiers in Plant Science
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