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wheat Stripe rust

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https://www.readbyqxmd.com/read/28443114/tadir1-2-a-wheat-ortholog-of-lipid-transfer-protein-atdir1-contributes-to-negative-regulation-of-wheat-resistance-against-puccinia-striiformis-f-sp-tritici
#1
Soyed M Ahmed, Peng Liu, Qinghe Xue, Changan Ji, Tuo Qi, Jia Guo, Jun Guo, Zhensheng Kang
Very few LTPs have been shown to act through plasma membrane receptors or to be involved in the hypersensitive response (HR). DIR1, a new type of plant LTP interacts with lipids in vitro, moves to distant tissues during systemic acquired resistance (SAR) and therefore is thought to be involved in long-distance signaling during SAR. However, the exact functions of DIR1 orthologs in cereal species under biotic and abiotic stresses have not been thoroughly defined. In this study, a novel wheat ortholog of the DIR1 gene, TaDIR1-2, was isolated from Suwon11, a Chinese cultivar of wheat and functionally characterized...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28393303/genomic-and-pedigree-based-prediction-for-leaf-stem-and-stripe-rust-resistance-in-wheat
#2
Philomin Juliana, Ravi P Singh, Pawan K Singh, Jose Crossa, Julio Huerta-Espino, Caixia Lan, Sridhar Bhavani, Jessica E Rutkoski, Jesse A Poland, Gary C Bergstrom, Mark E Sorrells
Genomic prediction for seedling and adult plant resistance to wheat rusts was compared to prediction using few markers as fixed effects in a least-squares approach and pedigree-based prediction. The unceasing plant-pathogen arms race and ephemeral nature of some rust resistance genes have been challenging for wheat (Triticum aestivum L.) breeding programs and farmers. Hence, it is important to devise strategies for effective evaluation and exploitation of quantitative rust resistance. One promising approach that could accelerate gain from selection for rust resistance is 'genomic selection' which utilizes dense genome-wide markers to estimate the breeding values (BVs) for quantitative traits...
April 9, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28330146/mapping-of-stripe-rust-resistance-qtl-in-cappelle-desprez%C3%A2-%C3%A3-%C3%A2-pbw343-ril-population-effective-in-northern-wheat-belt-of-india
#3
Sushma Kumari Pawar, Davinder Sharma, Joginder Singh Duhan, Mahender Singh Saharan, Ratan Tiwari, Indu Sharma
Stripe rust caused by Puccinia striiformis f. sp. tritici is most important and devastating disease of wheat worldwide, which affects the grain yields, quality and nutrition. To elucidate, the genetic basis of resistance, a mapping population of recombinant inbred lines was developed from a cross between resistant Cappelle-Desprez and susceptible cultivar PBW343 using single-seed descent. Variety PBW343 had been one of the most popular cultivars of North Western Plains Zone, for more than a decade, before succumbing to the stripe rust...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28278512/targeted-segment-transfer-from-rye-chromosome-2r-to-wheat-chromosomes-2a-2b-and-7b
#4
Tianheng Ren, Zhi Li, Benju Yan, Feiquan Tan, Zongxiang Tang, Shulan Fu, Manyu Yang, Zhenglong Ren
Increased chromosome instability was induced by a rye (Secale cereale L.) monosomic 2R chromosome into wheat (Triticum aestivum L.). Centromere breakage and telomere dysfunction result in high rates of chromosome aberrations, including breakages, fissions, fusions, deletions, and translocations. Plants with target traits were sequentially selected to produce a breeding population, from which 3 translocation lines with target traits have been selected. In these lines, wheat chromosomes 2A, 2B, and 7B recombined with segments of the rye chromosome arm 2RL...
2017: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/28261230/tarar1-is-involved-in-wheat-defense-against-stripe-rust-pathogen-mediated-by-yrsu
#5
Xiaojing Wang, Yaru Wang, Peng Liu, Yan Ding, Xiaoqian Mu, Xiping Liu, Xiaojie Wang, Mengxin Zhao, Baoyu Huai, Li Huang, Zhensheng Kang
RAR1 is a eukaryotic zinc-binding protein first identified as required for race-specific resistance to powdery mildew in barley. To study the function of TaRAR1 involvement in wheat (Triticum aestivum L.) defense against the infection of stripe rust pathogen Puccinia striiformis f. sp. tritici (Pst), we identified and cloned three wheat homeologous genes highly similar to the barley HvRar1, designated as TaRar1-2A, TaRar1-2B, and TaRar1-2D. The three TaRAR1 proteins all contain two conserved cysteine-and histidine-rich domains (CHORD-I and -II) shared by known RAR1-like proteins...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28258493/introduction-of-thinopyrum-intermedium-ssp-trichophorum-chromosomes-to-wheat-by-trigeneric-hybridization-involving-triticum-secale-and-thinopyrum-genera
#6
Jianbo Li, Tao Lang, Bin Li, Zhihui Yu, Hongjin Wang, Guangrong Li, Ennian Yang, Zujun Yang
Fluorescence in situ hybridization and molecular markers have confirmed that several chromosomes from Thinopyrum intermedium ssp. trichophorum have been added to a wheat background, which originated from a cross between a wheat- Thinopyrum partial amphiploid and triticale. The lines displayed blue grains and resistance to wheat stripe rust. Thinopyrum intermedium has been used as a valuable resource for improving the disease resistance and yield potential of wheat. With the aim to transfer novel genetic variation from Th...
March 3, 2017: Planta
https://www.readbyqxmd.com/read/28255670/detection-and-validation-of-genomic-regions-associated-with-resistance-to-rust-diseases-in-a-worldwide-hexaploid-wheat-landrace-collection-using-bayesr-and-mixed-linear-model-approaches
#7
Raj K Pasam, Urmil Bansal, Hans D Daetwyler, Kerrie L Forrest, Debbie Wong, Joanna Petkowski, Nicholas Willey, Mandeep Randhawa, Mumta Chhetri, Hanif Miah, Josquin Tibbits, Harbans Bariana, Matthew J Hayden
BayesR and MLM association mapping approaches in common wheat landraces were used to identify genomic regions conferring resistance to Yr, Lr, and Sr diseases. Deployment of rust resistant cultivars is the most economically effective and environmentally friendly strategy to control rust diseases in wheat. However, the highly evolving nature of wheat rust pathogens demands continued identification, characterization, and transfer of new resistance alleles into new varieties to achieve durable rust control. In this study, we undertook genome-wide association studies (GWAS) using a mixed linear model (MLM) and the Bayesian multilocus method (BayesR) to identify QTL contributing to leaf rust (Lr), stem rust (Sr), and stripe rust (Yr) resistance...
April 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28211474/dissection-of-genomic-features-and-variations-of-three-pathotypes-of-puccinia-striiformis-through-whole-genome-sequencing
#8
Kanti Kiran, Hukam C Rawal, Himanshu Dubey, R Jaswal, Subhash C Bhardwaj, P Prasad, Dharam Pal, B N Devanna, Tilak R Sharma
Stripe rust of wheat, caused by Puccinia striiformis f. sp. tritici, is one of the important diseases of wheat. We used NGS technologies to generate a draft genome sequence of two highly virulent (46S 119 and 31) and a least virulent (K) pathotypes of P. striiformis from the Indian subcontinent. We generated ~24,000-32,000 sequence contigs (N50;7.4-9.2 kb), which accounted for ~86X-105X sequence depth coverage with an estimated genome size of these pathotypes ranging from 66.2-70.2 Mb. A genome-wide analysis revealed that pathotype 46S 119 might be highly evolved among the three pathotypes in terms of year of detection and prevalence...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28197134/identification-of-a-novel-alternaria-alternata-strain-able-to-hyperparasitize-puccinia-striiformis-f-sp-tritici-the-causal-agent-of-wheat-stripe-rust
#9
Li Zheng, Jie Zhao, Xiaofei Liang, Gangming Zhan, Shuchang Jiang, Zhensheng Kang
The obligate bitrophic fungus Puccinia striiformis f. sp. tritici (Pst) causes stripe (yellow) rust on wheat worldwide. Here, we report a novel fungal strain able to hyperparasitize Pst. The strain was isolated from gray-colored rust pustules, and was identified as Alternaria alternata (Fr.: Fr.) keissler based on a combination of morphological characteristics and multi-locus (ITS, GAPDH, and RPB2) phylogeny. Upon artificial inoculation, the hyperparasite reduced the production and viability of urediniospores, and produced a typical gray-colored rust pustule symptom...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28182966/characterization-of-a-small-gtp-binding-protein-gene-tarab18-from-wheat-involved-in-the-stripe-rust-resistance
#10
Zhengning Jiang, Hui Wang, Guoqin Zhang, Renhui Zhao, Tongde Bie, Ruiqi Zhang, Derong Gao, Liping Xing, Aizhong Cao
The stripe rust resistance gene, Yr26, is commonly used in wheat production. Identification of Yr26 resistance related genes is important for better understanding of the resistance mechanism. TaRab18, a putative small GTP-binding protein, was screened as a resistance regulated gene as it showed differential expression between the Yr26-containing resistant wheat and the susceptible wheat at different time points after Pst inoculation. TaRab18 contains four typical domains (GI to GIV) of the small GTP-binding proteins superfamily and five domains (RabF1 to RabF5) specific to the Rab subfamily...
January 30, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28177840/molecular-cytogenetics-identification-of-a-wheat-leymus-mollis-double-disomic-addition-line-with-stripe-rust-resistance
#11
Aicen Zhang, Wanyue Li, Changyou Wang, Xiaofei Yang, Chunhuan Chen, Chen Zhu, Nana Peng, Zengrong Tian, Yajuan Wang, Hong Zhang, Xinlun Liu, Wanquan Ji
Leymus mollis (Trin.) Pilg. (2n = 4x = 28, NsNsXmXm) possesses a number of valuable genes against biotic and abiotic stress, which could be transferred into common wheat background for wheat improvement. In the present study, we determined the karyotypic constitution of a wheat - L. mollis double disomic addition line, M11003-4-4-1-1, selected from the F5 progeny of a stable wheat - L. mollis derivative M39 (2n = 56) × Triticum aestivum cultivar 7182, by morphological and cytogenetic identification, GISH (genomic in situ hybridization), FISH (fluorescent in situ hybridization), molecular markers analysis, and stripe rust resistance evaluation...
November 23, 2016: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28177834/cytogenetic-study-and-stripe-rust-response-of-the-derivatives-from-a-wheat-thinopyrum-intermedium-psathyrostachys-huashanica-trigeneric-hybrid
#12
Hou-Yang Kang, Lin Tang, Dai-Yan Li, Cheng-Dou Diao, Wei Zhu, Yao Tang, Yi Wang, Xing Fan, Li-Li Xu, Jian Zeng, Li-Na Sha, Xiao-Fang Yu, Hai-Qin Zhang, Yong-Hong Zhou
To transfer multiple desirable alien genes into common wheat, we previously reported a new trigeneric hybrid synthesized by crossing a wheat - Thinopyrum intermedium partial amphiploid with wheat - Psathyrostachys huashanica amphiploid. Here, the meiotic behavior, chromosome constitution, and stripe rust resistance of F5 derivatives from the wheat - Th. intermedium - P. huashanica trigeneric hybrid were studied. Cytological analysis indicated the F5 progenies had chromosome numbers of 42-50 (average 44.96)...
December 10, 2016: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28039515/genome-wide-association-mapping-for-seedling-and-field-resistance-to-puccinia-striiformis-f-sp-tritici-in-elite-durum-wheat
#13
Weizhen Liu, Marco Maccaferri, Peter Bulli, Sheri Rynearson, Roberto Tuberosa, Xianming Chen, Michael Pumphrey
Genome-wide association analysis in tetraploid wheat revealed novel and diverse loci for seedling and field resistance to stripe rust in elite spring durum wheat accessions from worldwide. Improving resistance to stripe rust, caused by Puccinia striiformis f. sp. tritici, is a major objective for wheat breeding. To identify effective stripe rust resistance loci, a genome-wide association study (GWAS) was conducted using 232 elite durum wheat (Triticum turgidum ssp. durum) lines from worldwide breeding programs...
April 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28034841/transcription-factor-gene-tugt%C3%AE-3-is-involved-in-the-stripe-rust-resistance-in-triticum-urartu
#14
Ding Liujun, Pu Mingyu, Wei Bo, Wang Xianping, Fan Renchun, Zhang Xiangqi
Wheat stripe rust, caused by Puccinia striiformis West. f. sp. tritici Eriks. &Henn. (Pst), is a serious fungal disease. Identification of new genes associate with stripe rust resistance is important for developing disease resistant wheat cultivars and studying the mechanism of disease resistance. Trihelix is a plant specific transcription factor family, which is involved in regulation of growth and development, morphogenesis, and response to stresses. So far, no study reports on the relationship between the Trihelix family and wheat stripe rust...
December 20, 2016: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28005310/the-lr34-adult-plant-rust-resistance-gene-provides-seedling-resistance-in-durum-wheat-without-senescence
#15
Amy Rinaldo, Brian Gilbert, Rainer Boni, Simon G Krattinger, Davinder Singh, Robert F Park, Evans Lagudah, Michael Ayliffe
The hexaploid wheat (Triticum aestivum) adult plant resistance gene, Lr34/Yr18/Sr57/Pm38/Ltn1, provides broad spectrum resistance to wheat leaf rust (Lr34), stripe rust (Yr18), stem rust (Sr57) and powdery mildew (Pm38) pathogens, and has remained effective in wheat crops for many decades. The partial resistance provided by this gene is only apparent in adult plants and not effective in field grown seedlings. Lr34 also causes leaf tip necrosis (Ltn1) in mature adult plant leaves when grown under field conditions...
December 22, 2016: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/27995685/taadf4-an-actin-depolymerizing-factor-from-wheat-is-required-for-resistance-to-the-stripe-rust-pathogen-puccinia-striiformis-f-sp-tritici
#16
Bing Zhang, Yuan Hua, Juan Wang, Yan Huo, Masaki Shimono, Brad Day, Qing Ma
Actin filament assembly in plants is a dynamic process, requiring the activity of more than 75 actin-binding proteins. Central to the regulation of filament assembly and stability is the activity of a conserved family of actin-depolymerizing factors (ADFs), whose primarily function is to regulate the severing and depolymerization of actin filaments. In recent years, the activity of ADF proteins has been linked to a variety of cellular processes, including those associated with response to stress. Herein, a wheat ADF gene, TaADF4, was identified and characterized...
December 20, 2016: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/27994192/mapping-of-stripe-rust-resistance-gene-in-an-aegilops-caudate-introgression-line-in-wheat-and-its-genetic-association-with-leaf-rust-resistance
#17
Puneet Inder Toor, Satinder Kaur, Mitaly Bansal, Bharat Yadav, Parveen Chhuneja
A pair of stripe rust and leaf rust resistance genes was introgressed from Aegilops caudata, a nonprogenitor diploid species with the CC genome, to cultivated wheat. Inheritance and genetic mapping of stripe rust resistance gene in backcrossrecombinant inbred line (BC-RIL) population derived from the cross of a wheat-Ae. caudata introgression line (IL) T291- 2(pau16060) with wheat cv. PBW343 is reported here. Segregation of BC-RILs for stripe rust resistance depicted a single major gene conditioning adult plant resistance (APR) with stripe rust reaction varying from TR-20MS in resistant RILs signifying the presence of some minor genes as well...
December 2016: Journal of Genetics
https://www.readbyqxmd.com/read/27965705/characterization-and-genetic-analysis-of-rice-mutant-crr1-exhibiting-compromised-non-host-resistance-to-puccinia-striiformis-f-sp-tritici-pst
#18
Jing Zhao, Yuheng Yang, Donghe Yang, Yulin Cheng, Min Jiao, Gangming Zhan, Hongchang Zhang, Junyi Wang, Kai Zhou, Lili Huang, Zhensheng Kang
Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most devastating diseases of wheat in China. Rapid change to virulence following release of resistant cultivars necessitates ongoing discovery and exploitation of new resistance resources. Considerable effort has been directed at non-host resistance (NHR) which is believed to be durable. In the present study we identified rice mutant crr1 (compromised resistance to rust 1) that exhibited compromised NHR to Pst. Compared with wild type rice variety Nipponbare, crr1 mutant displayed a threefold increase in penetration rate by Pst, and enhanced hyphal growth...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27942031/evaluation-of-19-460-wheat-accessions-conserved-in-the-indian-national-genebank-to-identify-new-sources-of-resistance-to-rust-and-spot-blotch-diseases
#19
Sundeep Kumar, Sunil Archak, R K Tyagi, Jagdish Kumar, Vikas Vk, Sherry R Jacob, Kalyani Srinivasan, J Radhamani, R Parimalan, M Sivaswamy, Sandhya Tyagi, Mamata Yadav, Jyotisna Kumari, Deepali, Sandeep Sharma, Indoo Bhagat, Madhu Meeta, N S Bains, A K Chowdhury, B C Saha, P M Bhattacharya, Jyoti Kumari, M C Singh, O P Gangwar, P Prasad, S C Bharadwaj, Robin Gogoi, J B Sharma, Sandeep Kumar Gm, M S Saharan, Manas Bag, Anirban Roy, T V Prasad, R K Sharma, M Dutta, Indu Sharma, K C Bansal
A comprehensive germplasm evaluation study of wheat accessions conserved in the Indian National Genebank was conducted to identify sources of rust and spot blotch resistance. Genebank accessions comprising three species of wheat-Triticum aestivum, T. durum and T. dicoccum were screened sequentially at multiple disease hotspots, during the 2011-14 crop seasons, carrying only resistant accessions to the next step of evaluation. Wheat accessions which were found to be resistant in the field were then assayed for seedling resistance and profiled using molecular markers...
2016: PloS One
https://www.readbyqxmd.com/read/27917192/mining-centuries-old-in-situ-conserved-turkish-wheat-landraces-for-grain-yield-and-stripe-rust-resistance-genes
#20
Deepmala Sehgal, Susanne Dreisigacker, Savaş Belen, Ümran Küçüközdemir, Zafer Mert, Emel Özer, Alexey Morgounov
Wheat landraces in Turkey are an important genetic resource for wheat improvement. An exhaustive 5-year (2009-2014) effort made by the International Winter Wheat Improvement Programme (IWWIP), a cooperative program between the Ministry of Food, Agriculture and Livestock of Turkey, the International Center for Maize and Wheat Improvement (CIMMYT) and the International Center for Agricultural Research in the Dry Areas (ICARDA), led to the collection and documentation of around 2000 landrace populations from 55 provinces throughout Turkey...
2016: Frontiers in Genetics
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