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Gultyaeva E, Shaydayuk E, Shreyder E, Kushnirenko I, Shamanin V. Genetic Diversity of Promising Spring Wheat Accessions from Russia and Kazakhstan for Rust Resistance. PLANTS (BASEL, SWITZERLAND) 2024; 13:2469. [PMID: 39273953 PMCID: PMC11396946 DOI: 10.3390/plants13172469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2024] [Revised: 08/31/2024] [Accepted: 09/03/2024] [Indexed: 09/15/2024]
Abstract
Spring bread wheat (Triticum aestivum) is a major crop in Russia and in Kazakhstan. The rust pathogens, leaf rust caused by the fungus Puccinia triticina, stem rust incited by P. graminis and yellow rust caused by P. striiformis, are the significant biotic factors affecting wheat production. In this study, 40 new promising spring wheat genotypes from the Kazakhstan-Siberia Network for Spring Wheat Improvement (KASIB) were tested for resistance to leaf, stem and yellow rust at the seedling stage, and for identification of rust resistance genes using molecular markers. In addition, the collection was tested for leaf rust resistance and grain yields in the South Urals agroclimatic zone of Russia in 2023. As a result, 16 accessions with seedling resistance to leaf rust, 21 to stem rust and 4 to yellow rust were identified. Three breeding accessions were resistant to all rust species, and nine to P. triticina and P. graminis. Wheat accessions resistant to leaf rust at the seedling stage were also resistant in the field. Molecular analysis showed the presence of cataloged resistance genes, Lr1, Lr3a, Lr9, Lr10, Lr19, Lr20, Lr24, Lr26, Sr15, Sr24, Sr25, Sr31, Sr38, Yr9 and Yr18; uncatalogued genes Lr6Agi1 and Lr6Agi2 from Thinopyrum intermedium and LrAsp from Aegilops speltoides; and 1AL.1RS translocation. The current analysis showed an increase in leaf and stem rust resistance of new KASIB genotypes and their genetic diversity due to the inclusion of alien genetic material in breeding.
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Affiliation(s)
- Elena Gultyaeva
- All Russian Institute of Plant Protection, Shosse Podbelskogo 3, 196608 St. Petersburg, Russia
| | - Ekaterina Shaydayuk
- All Russian Institute of Plant Protection, Shosse Podbelskogo 3, 196608 St. Petersburg, Russia
| | - Ekaterina Shreyder
- Chelyabinsk Scientific Research Institute of Agriculture, 456404 Timiryazevskiy, Russia
| | - Igor Kushnirenko
- Chelyabinsk Scientific Research Institute of Agriculture, 456404 Timiryazevskiy, Russia
| | - Vladimir Shamanin
- Department of Agrotechnology, Omsk State Agrarian University, 644008 Omsk, Russia
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2
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Tong J, Zhao C, Liu D, Jambuthenne DT, Sun M, Dinglasan E, Periyannan SK, Hickey LT, Hayes BJ. Genome-wide atlas of rust resistance loci in wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2024; 137:179. [PMID: 38980436 PMCID: PMC11233289 DOI: 10.1007/s00122-024-04689-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 06/29/2024] [Indexed: 07/10/2024]
Abstract
Rust diseases, including leaf rust, stripe/yellow rust, and stem rust, significantly impact wheat (Triticum aestivum L.) yields, causing substantial economic losses every year. Breeding and deployment of cultivars with genetic resistance is the most effective and sustainable approach to control these diseases. The genetic toolkit for wheat breeders to select for rust resistance has rapidly expanded with a multitude of genetic loci identified using the latest advances in genomics, mapping and cloning strategies. The goal of this review was to establish a wheat genome atlas that provides a comprehensive summary of reported loci associated with rust resistance. Our atlas provides a summary of mapped quantitative trait loci (QTL) and characterised genes for the three rusts from 170 publications over the past two decades. A total of 920 QTL or resistance genes were positioned across the 21 chromosomes of wheat based on the latest wheat reference genome (IWGSC RefSeq v2.1). Interestingly, 26 genomic regions contained multiple rust loci suggesting they could have pleiotropic effects on two or more rust diseases. We discuss a range of strategies to exploit this wealth of genetic information to efficiently utilise sources of resistance, including genomic information to stack desirable and multiple QTL to develop wheat cultivars with enhanced resistance to rust disease.
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Affiliation(s)
- Jingyang Tong
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Cong Zhao
- National Wheat Improvement Centre, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Dan Liu
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Dilani T Jambuthenne
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Mengjing Sun
- National Wheat Improvement Centre, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Eric Dinglasan
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Sambasivam K Periyannan
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, 4072, Australia.
- School of Agriculture and Environmental Science and Centre for Crop Health, University of Southern Queensland, Toowoomba, QLD, 4350, Australia.
| | - Lee T Hickey
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Ben J Hayes
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, 4072, Australia.
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Xiao B, Qie Y, Jin Y, Yu N, Sun N, Liu W, Wang X, Wang J, Qian Z, Zhao Y, Yuan T, Li L, Wang F, Liu C, Ma P. Genetic basis of an elite wheat cultivar Guinong 29 with harmonious improvement between multiple diseases resistance and other comprehensive traits. Sci Rep 2024; 14:14336. [PMID: 38906938 PMCID: PMC11192888 DOI: 10.1038/s41598-024-64998-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 06/14/2024] [Indexed: 06/23/2024] Open
Abstract
Fungal diseases, such as powdery mildew and rusts, significantly affect the quality and yield of wheat. Pyramiding diverse types of resistance genes into cultivars represents the preferred strategy to combat these diseases. Moreover, achieving collaborative improvement between diseases resistance, abiotic stress, quality, and agronomic and yield traits is difficult in genetic breeding. In this study, the wheat cultivar, Guinong 29 (GN29), showed high resistance to powdery mildew and stripe rust at both seedling and adult plant stages, and was susceptible to leaf rust at the seedling stage but slow resistance at the adult-plant stage. Meanwhile, it has elite agronomic and yield traits, indicating promising coordination ability among multiple diseases resistance and other key breeding traits. To determine the genetic basis of these elite traits, GN29 was tested with 113 molecular markers for 98 genes associated with diseases resistance, stress tolerance, quality, and adaptability. The results indicated that two powdery mildew resistance (Pm) genes, Pm2 and Pm21, confirmed the outstanding resistance to powdery mildew through genetic analysis, marker detection, genomic in situ hybridization (GISH), non-denaturing fluorescence in situ hybridization (ND-FISH), and homology-based cloning; the stripe rust resistance (Yr) gene Yr26 and leaf rust resistance (Lr) genes Lr1 and Lr46 conferred the stripe rust and slow leaf rust resistance in GN29, respectively. Meanwhile, GN29 carries dwarfing genes Rht-B1b and Rht-D1a, vernalization genes vrn-A1, vrn-B1, vrn-D1, and vrn-B3, which were consistent with the phenotypic traits in dwarf characteristic and semi-winter property; carries genes Dreb1 and Ta-CRT for stress tolerance to drought, salinity, low temperature, and abscisic acid (ABA), suggesting that GN29 may also have elite stress-tolerance ability; and carries two low-molecular-weight glutenin subunit genes Glu-B3b and Glu-B3bef which contributed to high baking quality. This study not only elucidated the genetic basis of the elite traits in GN29 but also verified the capability for harmonious improvement in both multiple diseases resistance and other comprehensive traits, offering valuable information for breeding breakthrough-resistant cultivars.
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Affiliation(s)
- Bei Xiao
- Yantai Key Laboratory of Characteristic Agricultural Biological Resources Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Yanmin Qie
- Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences/Hebei Key Laboratory of Crop Genetic and Breeding, Shijiazhuang, 050035, China
| | - Yuli Jin
- Yantai Key Laboratory of Characteristic Agricultural Biological Resources Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Ningning Yu
- Yantai Key Laboratory of Characteristic Agricultural Biological Resources Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Nina Sun
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Wei Liu
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Xiaolu Wang
- Crop Research Institute, Shandong Academy of Agriculture Sciences, Jinan, 250100, China
| | - Jiaojiao Wang
- Yantai Key Laboratory of Characteristic Agricultural Biological Resources Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Zejun Qian
- Yantai Key Laboratory of Characteristic Agricultural Biological Resources Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Ya Zhao
- Yantai Key Laboratory of Characteristic Agricultural Biological Resources Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Tangyu Yuan
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Linzhi Li
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Fengtao Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
| | - Cheng Liu
- Crop Research Institute, Shandong Academy of Agriculture Sciences, Jinan, 250100, China.
| | - Pengtao Ma
- Yantai Key Laboratory of Characteristic Agricultural Biological Resources Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China.
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Xue S, Wang H, Ma Y, Sun T, Wang Y, Meng F, Wang X, Yang Z, Zhang J, Du J, Li S, Li Z. Fine mapping of powdery mildew resistance gene PmXNM in a Chinese wheat landrace Xiaonanmai. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2024; 137:35. [PMID: 38286845 DOI: 10.1007/s00122-024-04544-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 01/05/2024] [Indexed: 01/31/2024]
Abstract
KEY MESSAGE Powdery mildew resistance gene PmXNM, originated from the Chinese wheat landrace Xiaonanmai, was delimited to a 300.7-kb interval enriched with resistance genes. Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is a globally devastating disease threatening the yield and quality of wheat worldwide. The use of broad-spectrum disease resistance genes from wheat landraces is an effective strategy to prevent this pathogen. Chinese wheat landrace Xiaonanmai (XNM) was immune to 23 tested Bgt isolates at the seedling stage. The F1, F2, and F2:4 progenies derived from the cross between XNM and Chinese Spring (CS) were used in this study. Genetic analysis revealed that powdery mildew resistance in XNM was controlled by a single dominant gene, temporarily designated PmXNM. Bulked segregant analysis and molecular mapping delimited PmXNM to the distal terminal region of chromosome 4AL flanked by markers caps213923 and kasp511718. The region carrying the PmXNM locus was approximately 300.7 kb and contained nine high-confidence genes according to the reference genome sequence of CS. Five of these genes, annotated as disease resistance RPP13-like proteins 1, were clustered in the target region. Haplotype analysis using the candidate gene-specific markers indicated that the majority of 267 common wheat accessions (75.3%) exhibited extensive gene losses at the PmXNM locus, as confirmed by aligning the targeted genome sequences of CS with those of other sequenced wheat cultivars. Seven candidate gene-specific markers have proven effective for marker-assisted introgression of PmXNM into modern elite cultivars.
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Affiliation(s)
- Shulin Xue
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China.
| | - Huan Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Yuyu Ma
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Tiepeng Sun
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Yingxue Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Fan Meng
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Xintian Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Zihan Yang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Jieli Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Jinxuan Du
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Suoping Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China
| | - Zhifang Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, Henan, China.
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Jabran M, Ali MA, Zahoor A, Muhae-Ud-Din G, Liu T, Chen W, Gao L. Intelligent reprogramming of wheat for enhancement of fungal and nematode disease resistance using advanced molecular techniques. FRONTIERS IN PLANT SCIENCE 2023; 14:1132699. [PMID: 37235011 PMCID: PMC10206142 DOI: 10.3389/fpls.2023.1132699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 04/19/2023] [Indexed: 05/28/2023]
Abstract
Wheat (Triticum aestivum L.) diseases are major factors responsible for substantial yield losses worldwide, which affect global food security. For a long time, plant breeders have been struggling to improve wheat resistance against major diseases by selection and conventional breeding techniques. Therefore, this review was conducted to shed light on various gaps in the available literature and to reveal the most promising criteria for disease resistance in wheat. However, novel techniques for molecular breeding in the past few decades have been very fruitful for developing broad-spectrum disease resistance and other important traits in wheat. Many types of molecular markers such as SCAR, RAPD, SSR, SSLP, RFLP, SNP, and DArT, etc., have been reported for resistance against wheat pathogens. This article summarizes various insightful molecular markers involved in wheat improvement for resistance to major diseases through diverse breeding programs. Moreover, this review highlights the applications of marker assisted selection (MAS), quantitative trait loci (QTL), genome wide association studies (GWAS) and the CRISPR/Cas-9 system for developing disease resistance against most important wheat diseases. We also reviewed all reported mapped QTLs for bunts, rusts, smuts, and nematode diseases of wheat. Furthermore, we have also proposed how the CRISPR/Cas-9 system and GWAS can assist breeders in the future for the genetic improvement of wheat. If these molecular approaches are used successfully in the future, they can be a significant step toward expanding food production in wheat crops.
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Affiliation(s)
- Muhammad Jabran
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Muhammad Amjad Ali
- Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan
| | - Adil Zahoor
- Department of Biotechnology, Chonnam National University, Yeosu, Republic of Korea
| | - Ghulam Muhae-Ud-Din
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Taiguo Liu
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wanquan Chen
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Li Gao
- State Key Laboratory for Biology of Plant Diseases, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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Kloppe T, Whetten RB, Kim SB, Powell OR, Lück S, Douchkov D, Whetten RW, Hulse-Kemp AM, Balint-Kurti P, Cowger C. Two pathogen loci determine Blumeria graminis f. sp. tritici virulence to wheat resistance gene Pm1a. THE NEW PHYTOLOGIST 2023; 238:1546-1561. [PMID: 36772855 DOI: 10.1111/nph.18809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
Blumeria graminis f. sp. tritici (Bgt) is a globally important fungal pathogen of wheat that can rapidly evolve to defeat wheat powdery mildew (Pm) resistance genes. Despite periodic regional deployment of the Pm1a resistance gene in US wheat production, Bgt strains that overcome Pm1a have been notably nonpersistent in the United States, while on other continents, they are more widely established. A genome-wide association study (GWAS) was conducted to map sequence variants associated with Pm1a virulence in 216 Bgt isolates from six countries, including the United States. A virulence variant apparently unique to Bgt isolates from the United States was detected in the previously mapped gene AvrPm1a (BgtE-5612) on Bgt chromosome 6; an in vitro growth assay suggested no fitness reduction associated with this variant. A gene on Bgt chromosome 8, Bgt-51526, was shown to function as a second determinant of Pm1a virulence, and despite < 30% amino acid identity, BGT-51526 and BGTE-5612 were predicted to share > 85% of their secondary structure. A co-expression study in Nicotiana benthamiana showed that BGTE-5612 and BGT-51526 each produce a PM1A-dependent hypersensitive response. More than one member of a B. graminis effector family can be recognized by a single wheat immune receptor, and a two-gene model is necessary to explain virulence to Pm1a.
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Affiliation(s)
- Tim Kloppe
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, 27695, USA
| | - Rebecca B Whetten
- Plant Science Research Unit, USDA Agricultural Research Service, Raleigh, NC, 27695, USA
| | - Saet-Byul Kim
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, 27695, USA
| | | | - Stefanie Lück
- Leibniz Institute of Plant Genetics and Crop Plant Research, D-06466, OT Gatersleben, Seeland, Germany
| | - Dimitar Douchkov
- Leibniz Institute of Plant Genetics and Crop Plant Research, D-06466, OT Gatersleben, Seeland, Germany
| | - Ross W Whetten
- Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, 27695, USA
| | - Amanda M Hulse-Kemp
- Genomics and Bioinformatics Research Unit, USDA Agricultural Research Service, Raleigh, NC, 27695, USA
| | - Peter Balint-Kurti
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, 27695, USA
- Plant Science Research Unit, USDA Agricultural Research Service, Raleigh, NC, 27695, USA
| | - Christina Cowger
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, 27695, USA
- Plant Science Research Unit, USDA Agricultural Research Service, Raleigh, NC, 27695, USA
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Gultyaeva EI, Shaydayuk EL, Veselova VV, Smirnova RE, Zuev EV, Khakimova AG, Mitrofanova OP. Diversity of new Russian bread wheat cultivars according to leaf rust resistance genes. PROCEEDINGS ON APPLIED BOTANY, GENETICS AND BREEDING 2022. [DOI: 10.30901/2227-8834-2022-4-208-218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background. Cultivation of resistant cultivars is an effective method of wheat protection against leaf rust. The purpose of this work was to characterize the juvenile leaf rust resistance of bread wheat cultivars listed in the State Register for Selection Achievements in 2021 and identify their Lr genes using molecular markers.Materials and methods. The material included 18 cultivars of winter bread wheat and nine spring ones. Juvenile resistance in the seedling phase was assessed with two test clones (kLr9 и kLr19) and the Krasnodar population of Puccinia triticina Erikss. Molecular markers were used to identify 18 Lr genes.Results and discussion. A high level of resistance (score 0 or 0;) was shown by cvs. ‘Khamdan’, ‘Sharm’ and ‘Omskaya 44’; moderate resistance (score 2, 2+) by ‘Albidum 2030’. Reactions of ‘Polina’, ‘Rossyp’, ‘Status’, ‘Balkysh’ and ‘Bogema’ were variable. The studied cultivars did not contain juvenile genes Lr9, Lr24, Lr25, Lr28, Lr29, Lr39, Lr47 or Lr66 and adult plant resistance genes Lr21 and Lr35. Markers of identifiable genes were not detected in cv. ‘Sharm’, highly resistant to leaf rust. ‘Khamdan’ had an ineffective Lr10 gene and a partial resistance gene Lr34, which offered no protection in the seedling stage. These cultivars seem to contain additional resistance genes. A high level of resistance to leaf rust in ‘Omskaya 44’ is provided by a combination of the Lr19, Lr26, Lr1 and Lr3 genes. In ‘Nemchinovskaya 85’, the partially effective adult plant resistance gene Lr37 was identified. In other tested cultivars, Lr1, Lr3, Lr10, Lr26 and Lr34 were widely represented.
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Affiliation(s)
| | | | | | | | - E. V. Zuev
- N.I. Vavilov All-Russian Institute of Plant Genetic Resource
| | - A. G. Khakimova
- N.I. Vavilov All-Russian Institute of Plant Genetic Resource
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Genievskaya Y, Pecchioni N, Laidò G, Anuarbek S, Rsaliyev A, Chudinov V, Zatybekov A, Turuspekov Y, Abugalieva S. Genome-Wide Association Study of Leaf Rust and Stem Rust Seedling and Adult Resistances in Tetraploid Wheat Accessions Harvested in Kazakhstan. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11151904. [PMID: 35893608 PMCID: PMC9329756 DOI: 10.3390/plants11151904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/13/2022] [Accepted: 07/20/2022] [Indexed: 05/05/2023]
Abstract
Leaf rust (LR) and stem rust (SR) are diseases increasingly impacting wheat production worldwide. Fungal pathogens producing rust diseases in wheat may cause yield losses of up to 50−60%. One of the most effective methods for preventing such losses is the development of resistant cultivars with high yield potential. This goal can be achieved through complex breeding studies, including the identification of key genetic factors controlling rust disease resistance. The objective of this study was to identify sources of tetraploid wheat resistance to LR and SR races, both at the seedling growth stage in the greenhouse and at the adult plant stage in field experiments, under the conditions of the North Kazakhstan region. A panel consisting of 193 tetraploid wheat accessions was used in a genome-wide association study (GWAS) for the identification of quantitative trait loci (QTLs) associated with LR and SR resistance, using 16,425 polymorphic single-nucleotide polymorphism (SNP) markers in the seedling and adult stages of plant development. The investigated panel consisted of seven tetraploid subspecies (Triticum turgidum ssp. durum, ssp. turanicum, ssp. turgidum, ssp. polonicum, ssp. carthlicum, ssp. dicoccum, and ssp. dicoccoides). The GWAS, based on the phenotypic evaluation of the tetraploid collection’s reaction to the two rust species at the seedling (in the greenhouse) and adult (in the field) stages, revealed 38 QTLs (p < 0.001), comprising 17 for LR resistance and 21 for SR resistance. Ten QTLs were associated with the reaction to LR at the seedling stage, while six QTLs were at the adult plant stage and one QTL was at both the seedling and adult stages. Eleven QTLs were associated with SR response at the seedling stage, while nine QTLs were at the adult plant stage and one QTL was at both the seedling and adult stages. A comparison of these results with previous LR and SR studies indicated that 11 of the 38 QTLs are presumably novel loci. The QTLs identified in this work can potentially be used for marker-assisted selection of tetraploid and hexaploid wheat for the breeding of new LR- and SR-resistant cultivars.
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Affiliation(s)
- Yuliya Genievskaya
- Laboratory of Molecular Genetics, Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (Y.G.); (S.A.); (A.Z.); (Y.T.)
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
| | - Nicola Pecchioni
- Research Centre for Cereal and Industrial Crops, 71122 Foggia, Italy; (N.P.); (G.L.)
| | - Giovanni Laidò
- Research Centre for Cereal and Industrial Crops, 71122 Foggia, Italy; (N.P.); (G.L.)
| | - Shynar Anuarbek
- Laboratory of Molecular Genetics, Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (Y.G.); (S.A.); (A.Z.); (Y.T.)
| | - Aralbek Rsaliyev
- Laboratory of Phytosanitary Safety, Research Institute of Biological Safety Problems, Gvardeisky 080409, Kazakhstan;
| | - Vladimir Chudinov
- Breeding Department, Karabalyk Agricultural Experimental Station, Nauchnoe 110908, Kazakhstan;
| | - Alibek Zatybekov
- Laboratory of Molecular Genetics, Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (Y.G.); (S.A.); (A.Z.); (Y.T.)
| | - Yerlan Turuspekov
- Laboratory of Molecular Genetics, Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (Y.G.); (S.A.); (A.Z.); (Y.T.)
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
| | - Saule Abugalieva
- Laboratory of Molecular Genetics, Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan; (Y.G.); (S.A.); (A.Z.); (Y.T.)
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
- Correspondence: ; Tel.: +7-727-394-8006
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Kumar K, Jan I, Saripalli G, Sharma PK, Mir RR, Balyan HS, Gupta PK. An Update on Resistance Genes and Their Use in the Development of Leaf Rust Resistant Cultivars in Wheat. Front Genet 2022; 13:816057. [PMID: 35432483 PMCID: PMC9008719 DOI: 10.3389/fgene.2022.816057] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/28/2022] [Indexed: 11/19/2022] Open
Abstract
Wheat is one of the most important cereal crops in the world. The production and productivity of wheat is adversely affected by several diseases including leaf rust, which can cause yield losses, sometimes approaching >50%. In the present mini-review, we provide updated information on (i) all Lr genes including those derived from alien sources and 14 other novel resistance genes; (ii) a list of QTLs identified using interval mapping and MTAs identified using GWAS (particular those reported recently i.e., after 2018) and their association with known Lr genes; (iii) introgression/pyramiding of individual Lr genes in commercial/prominent cultivars from 18 different countries including India. Challenges and future perspectives of breeding for leaf rust resistance are also provided at the end of this mini-review. We believe that the information in this review will prove useful for wheat geneticists/breeders, not only in the development of leaf rust-resistant wheat cultivars, but also in the study of molecular mechanism of leaf rust resistance in wheat.
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Affiliation(s)
- Kuldeep Kumar
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
| | - Irfat Jan
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
- Division of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology, Wadura, India
| | - Gautam Saripalli
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - P. K. Sharma
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
| | - Reyazul Rouf Mir
- Division of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology, Wadura, India
| | - H. S. Balyan
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
| | - P. K. Gupta
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, India
- *Correspondence: P. K. Gupta, ,
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Functional characterization of powdery mildew resistance gene MlIW172, a new Pm60 allele and its allelic variation in wild emmer wheat. J Genet Genomics 2022; 49:787-795. [DOI: 10.1016/j.jgg.2022.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 01/26/2022] [Accepted: 01/29/2022] [Indexed: 11/19/2022]
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11
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Lapochkina IF, Gainullin NR, Baranova ОA, Kovalenko NM, Marchenkova LA, Pavlova OV, O V Mitroshina OV. Complex resistance of spring and winter bread wheat lines to biotic and abiotic stresses. Vavilovskii Zhurnal Genet Selektsii 2021; 25:723-731. [PMID: 34950843 PMCID: PMC8649750 DOI: 10.18699/vj21.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 11/19/2022] Open
Abstract
An original initial material of spring and winter bread wheat with group resistance to stem and leaf rust was developed using new donors of resistance to stem rust: winter soft wheat GT 96/90 (Bulgaria) and accession 119/4-06rw with genetic material of the species Triticum migushovae and (Aegilops speltoides and Secale cereale), respectively, a line of spring wheat 113/00i-4 obtained using the species Ae. triuncialis and T. kiharae, as well as spring accession 145/00i with genetic material of the species Ae. speltoides resistant to leaf rust. The transfer of effective Sr- genes to progeny was monitored using molecular markers. New lines underwent a f ield assessment of resistance to leaf and stem rust in the
epiphytotic development of diseases in the Central Region of the Russian Federation, as well as in the North Caucasus
and Western Siberia, and showed high resistance to these pathogens. Fourteen genotypes of spring wheat with group
resistance to these diseases and parental forms that participated in the origin of the lines were evaluated for resistance
to spot blotch (Cochliobolus sativus) and tan spot (Pyrenophora tritici-repentis) using
isolates from Kazakhstan and Omsk
in laboratory conditions. A highly resistant parental form of winter soft wheat from “Arsenal” collection 119/4-06rw
(wheat-Ae. speltoides-rye hybrid 2n = 42) with group resistance to two spots, four medium-resistant genotypes to both
isolates of tan spot from Kazakhstan and Omsk populations of the pathogen, as well as genotypes resistant to the Omsk
isolate of P. tritici-repentis (parental form 113/00i-4 and lines 1-16i, 6-16i, 9-16i) were isolated. Among the lines of winter
wheat, four were identif ied with group resistance to spot blotch and tan spot. Additionally, the stress resistance of the
lines to NaCl salinization and prolonged f looding of seeds with water was evaluated at the early stages of ontogenesis
in laboratory conditions. Lines 33-16i, 37-16i, 32- 16i and 9-16i showed a high ability to withstand excess moisture. Lines
33-16i, 37-16i, 32-16i and 3-16i were characterized
by high salt tolerance, exceeding the average of 49.7 %. Among the
winter genotypes, lines were identif ied with increased resistance to hypoxia (37-19w, 32-19w, 16-19w, 90-19w) and with
increased salt tolerance (20- 19w, 9-19w, 37-19w, 90-19w), signif icantly exceeding the standard cv. Moskovskaya
39.
The listed lines are of interest as sources of resistance to anaerobic and salt stress, as well as donors of resistance to a
group of fungal diseases:
leaf and stem rust and tan spot. We attribute the increased level of resistance of the new initial
material to the presence of alien translocations in the original parental forms involved in the origin of the lines.
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Affiliation(s)
- I F Lapochkina
- Federal Research Center "Nemchinovka", Novoivanovskoe, Moscow region, Russia
| | - N R Gainullin
- Federal Research Center "Nemchinovka", Novoivanovskoe, Moscow region, Russia
| | - О A Baranova
- All-Russian Institute of Plant Protection, Pushkin, St. Petersburg, Russia
| | - N M Kovalenko
- All-Russian Institute of Plant Protection, Pushkin, St. Petersburg, Russia
| | - L A Marchenkova
- Federal Research Center "Nemchinovka", Novoivanovskoe, Moscow region, Russia
| | - O V Pavlova
- Federal Research Center "Nemchinovka", Novoivanovskoe, Moscow region, Russia
| | - O V O V Mitroshina
- Federal Research Center "Nemchinovka", Novoivanovskoe, Moscow region, Russia
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12
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Jin Y, Shi F, Liu W, Fu X, Gu T, Han G, Shi Z, Sheng Y, Xu H, Li L, An D. Identification of Resistant Germplasm and Detection of Genes for Resistance to Powdery Mildew and Leaf Rust from 2,978 Wheat Accessions. PLANT DISEASE 2021; 105:3900-3908. [PMID: 34129353 DOI: 10.1094/pdis-03-21-0532-re] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Powdery mildew and leaf rust, caused by Blumeria graminis f. sp. tritici and Puccinia triticina, respectively, are widespread diseases of wheat worldwide. The use of resistant cultivars is considered the most economical, environment-friendly, and effective method to control these diseases. In the present study, a collection of 2,978 wheat accessions consisting of 1,394 advanced breeding lines, 1,078 Chinese cultivars, 291 introduced cultivars, 132 lines containing alien chromosomes, and 83 landraces was tested for reactions to powdery mildew and leaf rust. The results indicated that 659 wheat accessions (22.1%) were highly resistant to a widely prevalent B. graminis f. sp. tritici isolate, E09, at the seedling stage, and 390 were consistently resistant to the mixture of B. graminis f. sp. tritici isolates at the adult plant stage. Meanwhile, 63 accessions (2.1%) were highly resistant to leaf rust at the adult plant stage, of which 54 were resistant to a predominant and highly virulent P. triticina race, THTT, at the seedling stage. Notably, 17 accessions were resistant to both powdery mildew and leaf rust. To detect known genes for resistance to powdery mildew and leaf rust, these accessions were tested with gene-specific or tightly linked markers for seven powdery mildew genes (Pm genes; Pm2, Pm4, Pm5, Pm6, Pm8, Pm21, and Pm24) and 10 Lr genes (Lr1, Lr9, Lr10, Lr19, Lr20, Lr24, Lr26, Lr34, Lr37, and Lr46). Of the 659 powdery mildew-resistant accessions, 328 might carry single Pm genes and 191 carry combined Pm genes. Pm2 was detected at the highest frequency of 59.6%, followed by Pm8, Pm6, Pm21, Pm4, and Pm5, whereas Pm24 was not detected. In addition, 139 accessions might contain unknown Pm genes different from those tested in this study. In the 63 accessions resistant to leaf rust, four leaf rust genes (Lr genes; Lr1, Lr10, Lr26, and Lr34) were detected in 41 accessions singly or in combination, whereas six genes (Lr9, Lr19, Lr20, Lr24, Lr37, and Lr46) were not detected. Twenty-two accessions might contain unknown Lr genes different from those tested in this study. This study not only provided important information for rationally distributing resistance genes in wheat breeding programs, but also identified resistant germplasm that might have novel genes to enrich the diversity of resistance sources.
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Affiliation(s)
- Yuli Jin
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Fengyu Shi
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Weihua Liu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaoyi Fu
- Shijiazhuang Academy of Agricultural and Forestry Sciences, Shijiazhuang, China
| | - Tiantian Gu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Guohao Han
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhipeng Shi
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuan Sheng
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hongxing Xu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
| | - Lihui Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Diaoguo An
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
- The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
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13
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Dyda M, Tyrka M, Gołębiowska G, Rapacz M, Wędzony M. Genetic mapping of adult-plant resistance genes to powdery mildew in triticale. J Appl Genet 2021; 63:73-86. [PMID: 34561842 PMCID: PMC8755695 DOI: 10.1007/s13353-021-00664-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/03/2021] [Accepted: 09/13/2021] [Indexed: 11/21/2022]
Abstract
Triticale is a cereal of high economic importance; however, along with the increase in the area of this cereal, it is more often infected by the fungal pathogen Blumeria graminis, which causes powdery mildew. The rapid development of molecular biology techniques, in particular methods based on molecular markers may be an important tool used in modern plant breeding. Development of genetic maps, location of the QTLs defining the region of the genome associated with resistance and selection of markers linked to particular trait can be used to select resistant genotypes as well as to pyramidize several resistance genes in one variety. In this paper, we present a new, high-density genetic map of triticale doubled haploids (DH) population “Grenado” × “Zorro” composed of DArT, silicoDArT, and SNP markers. Composite interval mapping method was used to detect eight QTL regions associated with the area under disease progress curve (AUDPC) and 15 regions with the average value of powdery mildew infection (avPM) based on observation conducted in 3-year period in three different locations across the Poland. Two regions on rye chromosome 4R, and single loci on 5R and 6R were reported for the first time as regions associated with powdery mildew resistance. Among all QTLs, 14 candidate genes were identified coded cyclin-dependent kinase, serine/threonine-protein kinase-like protein as well as AMEIOTIC 1 homolog DYAD-like protein, DETOXIFICATION 16-like protein, and putative disease resistance protein RGA3. Three of identified candidate genes were found among newly described QTL regions associated with powdery mildew resistance in triticale.
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Affiliation(s)
- Mateusz Dyda
- Chair of Genetics, Institute of Biology, Pedagogical University of Cracow, Podchorążych 2, 30-084, Kraków, Poland.
| | - Mirosław Tyrka
- Department of Biotechnology and Bioinformatics, Faculty of Chemistry, Rzeszów University of Technology, Rzeszów, Poland
| | - Gabriela Gołębiowska
- Chair of Genetics, Institute of Biology, Pedagogical University of Cracow, Podchorążych 2, 30-084, Kraków, Poland
| | - Marcin Rapacz
- Department of Plant Breeding, Physiology and Seed Science, University of Agriculture in Kraków, Podłużna 3, 30-239, Krakow, Poland
| | - Maria Wędzony
- Chair of Genetics, Institute of Biology, Pedagogical University of Cracow, Podchorążych 2, 30-084, Kraków, Poland
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14
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Li Y, Wei ZZ, Fatiukha A, Jaiwar S, Wang H, Hasan S, Liu Z, Sela H, Krugman T, Fahima T. TdPm60 identified in wild emmer wheat is an ortholog of Pm60 and constitutes a strong candidate for PmG16 powdery mildew resistance. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:2777-2793. [PMID: 34104998 DOI: 10.1007/s00122-021-03858-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/10/2021] [Indexed: 05/23/2023]
Abstract
We identified TdPm60 alleles from wild emmer wheat (WEW), an ortholog of Pm60 from T. urartu, which constitutes a strong candidate for PmG16 mildew resistance. Deployment of PmG16 in Israeli modern bread wheat cultivar Ruta improved the resistance to several local Bgt isolates. Wild emmer wheat (WEW), the tetraploid progenitor of durum and bread wheat, is a valuable genetic resource for resistance to powdery mildew fungal disease caused by Blumeria graminis f. sp. tritici (Bgt). PmG16 gene, derived from WEW, confers high resistance to most tested Bgt isolates. We mapped PmG16 to a 1.4-cM interval between the flanking markers uhw386 and uhw390 on Chromosome 7AL. Based on gene annotation of WEW reference genome Zavitan_V1, 34 predicted genes were identified within the ~ 3.48-Mb target region. Six genes were annotated as associated with disease resistance, of which TRIDC7AG077150.1 was found to be highly similar to Pm60, previously cloned from Triticum urartu, and resides in the same syntenic region. The functional molecular marker (FMM) for Pm60 (M-Pm60-S1) co-segregated with PmG16, suggesting the Pm60 ortholog from WEW (designated here as TdPm60) as a strong candidate for PmG16. Sequence alignment identified only eight SNPs that differentiate between TdPm60 and TuPm60. Furthermore, TdPm60 was found to be present also in the WEW donor lines of the powdery mildew resistance genes MlIW172 and MlIW72, mapped to the same region of Chromosome 7AL as PmG16, suggesting that TdPm60 constitutes a candidate also for these genes. Furthermore, screening of additional 230 WEW accessions with Pm60 specific markers revealed 58 resistant accessions from the Southern Levant that harbored TdPm60, while none of the susceptible accessions showed the presence of this gene. Deployment of PmG16 in Israeli modern bread wheat cultivar Ruta conferred resistance against several local Bgt isolates.
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Affiliation(s)
- Yinghui Li
- Institute of Evolution, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
- The Department of Evolutionary and Environmental Biology, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
| | - Zhen-Zhen Wei
- Institute of Evolution, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
- The Department of Evolutionary and Environmental Biology, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
- Department of Agronomy, the Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Andrii Fatiukha
- Institute of Evolution, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
- The Department of Evolutionary and Environmental Biology, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
- Crop Developmental Centre and Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, S7N 5A8, Canada
| | - Samidha Jaiwar
- Institute of Evolution, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
- The Department of Evolutionary and Environmental Biology, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
| | - Hanchao Wang
- Institute of Evolution, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
- The Department of Evolutionary and Environmental Biology, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
| | - Samiha Hasan
- Institute of Evolution, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
- The Department of Evolutionary and Environmental Biology, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
| | - Zhiyong Liu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hanan Sela
- Institute of Evolution, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
| | - Tamar Krugman
- Institute of Evolution, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel
| | - Tzion Fahima
- Institute of Evolution, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel.
- The Department of Evolutionary and Environmental Biology, University of Haifa, Mt. Carmel, 3498838, Haifa, Israel.
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15
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Xue S, Lu M, Hu S, Xu H, Ma Y, Lu N, Bai S, Gu A, Wan H, Li S. Characterization of PmHHXM, a New Broad-Spectrum Powdery Mildew Resistance Gene in Chinese Wheat Landrace Honghuaxiaomai. PLANT DISEASE 2021; 105:2089-2096. [PMID: 33417497 DOI: 10.1094/pdis-10-20-2296-re] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Powdery mildew, caused by fungal pathogen Blumeria graminis f. sp. tritici, is an agronomically important and widespread wheat disease causing severe yield losses. Deployment of broad-spectrum disease resistance genes is the preferred strategy to prevent this pathogen. Chinese wheat landrace Honghuaxiaomai (HHXM) was resistant to all 23 tested B. graminis f. sp. tritici isolates at the seedling stage. The F1, F2, and F2:3 progenies derived from the cross HHXM × Yangmai 158 were used in this study, and genetic analysis revealed that a single dominant gene, designated PmHHXM, conferred resistance to B. graminis f. sp. tritici isolate E09. Bulked segregant analysis and molecular mapping initially located PmHHXM to the distal region of chromosome 4AL. To fine map PmHHXM, we identified two critical recombinants from 592 F2 plants and delimited PmHHXM to a 0.18-cM Xkasp475200 to Xhnu552 interval covering 1.77 Mb, in which a number of disease resistance-related gene clusters were annotated. Comparative mapping of this interval revealed a perturbed synteny among Triticeae species. This study reports the new powdery mildew resistance gene PmHHXM, which seems different from three known quantitative trait loci/genes identified on chromosome 4AL and has significant values for further genetic improvement. Analysis of the polymorphisms of 13 cosegregating markers between HHXM and 170 modern wheat cultivars indicates that Xhnu227 and Xsts478700 developed here are ideal for marker-assisted introgression of this locus in wheat breeding.
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Affiliation(s)
- Shulin Xue
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
| | - Mingxue Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
| | - Shanshan Hu
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
| | - Hongxing Xu
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
| | - Yuyu Ma
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
| | - Nan Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
| | - Shenglong Bai
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
| | - Aoyang Gu
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
| | - Hongshen Wan
- Crop Research Institute, Sichuan Academy of Agricultural Sciences/Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China (Ministry of Agriculture and Rural Areas), Chengdu 610066, Sichuan, China
| | - Suoping Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
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Atia MAM, El-Khateeb EA, Abd El-Maksoud RM, Abou-Zeid MA, Salah A, Abdel-Hamid AME. Mining of Leaf Rust Resistance Genes Content in Egyptian Bread Wheat Collection. PLANTS (BASEL, SWITZERLAND) 2021; 10:1378. [PMID: 34371581 PMCID: PMC8309345 DOI: 10.3390/plants10071378] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/15/2021] [Accepted: 07/01/2021] [Indexed: 11/16/2022]
Abstract
Wheat is a major nutritional cereal crop that has economic and strategic value worldwide. The sustainability of this extraordinary crop is facing critical challenges globally, particularly leaf rust disease, which causes endless problems for wheat farmers and countries and negatively affects humanity's food security. Developing effective marker-assisted selection programs for leaf rust resistance in wheat mainly depends on the availability of deep mining of resistance genes within the germplasm collections. This is the first study that evaluated the leaf rust resistance of 50 Egyptian wheat varieties at the adult plant stage for two successive seasons and identified the absence/presence of 28 leaf rust resistance (Lr) genes within the studied wheat collection. The field evaluation results indicated that most of these varieties demonstrated high to moderate leaf rust resistance levels except Gemmeiza 1, Gemmeiza 9, Giza162, Giza 163, Giza 164, Giza 165, Sids 1, Sids 2, Sids 3, Sakha 62, Sakha 69, Sohag 3 and Bany Swif 4, which showed fast rusting behavior. On the other hand, out of these 28 Lr genes tested against the wheat collection, 21 Lr genes were successfully identified. Out of 15 Lr genes reported conferring the adult plant resistant or slow rusting behavior in wheat, only five genes (Lr13, Lr22a, Lr34, Lr37, and Lr67) were detected within the Egyptian collection. Remarkedly, the genes Lr13, Lr19, Lr20, Lr22a, Lr28, Lr29, Lr32, Lr34, Lr36, Lr47, and Lr60, were found to be the most predominant Lr genes across the 50 Egyptian wheat varieties. The molecular phylogeny results also inferred the same classification of field evaluation, through grouping genotypes characterized by high to moderate leaf rust resistance in one cluster while being highly susceptible in a separate cluster, with few exceptions.
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Affiliation(s)
- Mohamed A. M. Atia
- Molecular Genetics and Genome Mapping Laboratory, Genome Mapping Department, Agricultural Genetic Engineering Research Institute (AGERI), Agricultural Research Center (ARC), Giza 12619, Egypt;
| | - Eman A. El-Khateeb
- Department of Botany, Faculty of Science, Tanta University, Tanta 31527, Egypt;
| | - Reem M. Abd El-Maksoud
- Department of Nucleic Acid & Protein Structure, Agricultural Genetic Engineering Research Institute (AGERI), Agricultural Research Center (ARC), Giza 12619, Egypt;
| | - Mohamed A. Abou-Zeid
- Wheat Disease Research Department, Plant Pathology Research Institute, Agricultural Research Center (ARC), Giza 12619, Egypt;
| | - Arwa Salah
- Molecular Genetics and Genome Mapping Laboratory, Genome Mapping Department, Agricultural Genetic Engineering Research Institute (AGERI), Agricultural Research Center (ARC), Giza 12619, Egypt;
| | - Amal M. E. Abdel-Hamid
- Department of Biological and Geological Sciences, Faculty of Education, Ain Shams University, Roxy, Cairo 11341, Egypt;
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17
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Kanwal M, Qureshi N, Gessese M, Forrest K, Babu P, Bariana H, Bansal U. An adult plant stripe rust resistance gene maps on chromosome 7A of Australian wheat cultivar Axe. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:2213-2220. [PMID: 33839800 DOI: 10.1007/s00122-021-03818-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
An adult plant stripe rust resistance gene Yr75 was located on the long arm of chromosome 7A. Fine mapping of the region identified markers closely linked with Yr75. Australian wheat cultivar Axe produced resistant to moderately resistant stripe rust responses under field conditions and was exhibiting seedling responses varying from 33C to 3+ under greenhouse conditions. Experiments covering tests at different growth stages (2nd, 3rd and 4th leaf stages) demonstrated the clear expression of resistance at the 4th leaf stage under controlled-environment greenhouse conditions. A recombinant inbred line (RIL) population was developed from the Axe/Nyabing-3 (Nyb) cross. Genetic analysis of Axe/Nyb RIL population in the greenhouse at the 4th leaf stage showed monogenic inheritance of stripe rust resistance. Selective genotyping using the iSelect 90 K Infinium SNP genotyping array was performed, and the resistance locus was mapped to the long arm of chromosome 7A and named Yr75. The Axe/Nyb RIL population was genotyped using a targeted genotype-by-sequencing assay, and the resistance-linked SNPs were converted into kompetitive allele-specific PCR (KASP) markers. These markers were tested on the entire Axe/Nyb RIL population, and markers sunKASP_430 and sunKASP_427 showed close association with Yr75 in the Axe/Nyb RIL population. A high-resolution mapping family of 1032 F2 plants from the Axe/Nyb cross was developed and genotyped with sunKASP_430 and sunKASP_427, and these markers flanked Yr75 at 0.3 cM and 0.4 cM, respectively. These markers cover 1.24 Mb of the physical map of Chinese Spring, and this information will be useful for map-based cloning of Yr75.
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Affiliation(s)
- Mehwish Kanwal
- School of Life Sciences, Faculty of Science, The University of Sydney Plant Breeding Institute, 107 Cobbitty Road, Cobbitty, NSW, 2570, Australia
| | - Naeela Qureshi
- Agriculture Victoria, AgriBio, Centre for AgriBioscience, 5 Ring Rd, Bundoora, VIC, 3083, Australia
| | - Mesfin Gessese
- School of Life Sciences, Faculty of Science, The University of Sydney Plant Breeding Institute, 107 Cobbitty Road, Cobbitty, NSW, 2570, Australia
| | - Kerrie Forrest
- Agriculture Victoria, AgriBio, Centre for AgriBioscience, 5 Ring Rd, Bundoora, VIC, 3083, Australia
| | - Prashanth Babu
- School of Life Sciences, Faculty of Science, The University of Sydney Plant Breeding Institute, 107 Cobbitty Road, Cobbitty, NSW, 2570, Australia
| | - Harbans Bariana
- School of Life Sciences, Faculty of Science, The University of Sydney Plant Breeding Institute, 107 Cobbitty Road, Cobbitty, NSW, 2570, Australia.
| | - Urmil Bansal
- School of Life Sciences, Faculty of Science, The University of Sydney Plant Breeding Institute, 107 Cobbitty Road, Cobbitty, NSW, 2570, Australia.
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18
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Alemu A, Brazauskas G, Gaikpa DS, Henriksson T, Islamov B, Jørgensen LN, Koppel M, Koppel R, Liatukas Ž, Svensson JT, Chawade A. Genome-Wide Association Analysis and Genomic Prediction for Adult-Plant Resistance to Septoria Tritici Blotch and Powdery Mildew in Winter Wheat. Front Genet 2021; 12:661742. [PMID: 34054924 PMCID: PMC8149967 DOI: 10.3389/fgene.2021.661742] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/06/2021] [Indexed: 11/29/2022] Open
Abstract
Septoria tritici blotch (STB) caused by the fungal pathogen Zymoseptoria tritici and powdery mildew (PM) caused by Blumeria graminis f.sp tritici (Bgt) are among the forefront foliar diseases of wheat that lead to a significant loss of grain yield and quality. Resistance breeding aimed at developing varieties with inherent resistance to STB and PM diseases has been the most sustainable and environment-friendly approach. In this study, 175 winter wheat landraces and historical cultivars originated from the Nordic region were evaluated for adult-plant resistance (APR) to STB and PM in Denmark, Estonia, Lithuania, and Sweden. Genome-wide association study (GWAS) and genomic prediction (GP) were performed based on the adult-plant response to STB and PM in field conditions using 7,401 single-nucleotide polymorphism (SNP) markers generated by 20K SNP chip. Genotype-by-environment interaction was significant for both disease scores. GWAS detected stable and environment-specific quantitative trait locis (QTLs) on chromosomes 1A, 1B, 1D, 2B, 3B, 4A, 5A, 6A, and 6B for STB and 2A, 2D, 3A, 4B, 5A, 6B, 7A, and 7B for PM adult-plant disease resistance. GP accuracy was improved when assisted with QTL from GWAS as a fixed effect. The GWAS-assisted GP accuracy ranged within 0.53–0.75 and 0.36–0.83 for STB and PM, respectively, across the tested environments. This study highlights that landraces and historical cultivars are a valuable source of APR to STB and PM. Such germplasm could be used to identify and introgress novel resistance genes to modern breeding lines.
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Affiliation(s)
- Admas Alemu
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden
| | - Gintaras Brazauskas
- Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry (LAMMC), Kėdainiai, Lithuania
| | - David S Gaikpa
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden
| | | | | | | | - Mati Koppel
- Estonian University of Life Sciences, Tartu, Estonia
| | - Reine Koppel
- Estonian Crop Research Institute, Jõgeva, Estonia
| | - Žilvinas Liatukas
- Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry (LAMMC), Kėdainiai, Lithuania
| | | | - Aakash Chawade
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden
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19
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Desiderio F, Bourras S, Mazzucotelli E, Rubiales D, Keller B, Cattivelli L, Valè G. Characterization of the Resistance to Powdery Mildew and Leaf Rust Carried by the Bread Wheat Cultivar Victo. Int J Mol Sci 2021; 22:ijms22063109. [PMID: 33803699 PMCID: PMC8003046 DOI: 10.3390/ijms22063109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/02/2021] [Accepted: 03/12/2021] [Indexed: 11/28/2022] Open
Abstract
Leaf rust and powdery mildew are two important foliar diseases in wheat. A recombinant inbred line (RIL) population, obtained by crossing two bread wheat cultivars (‘Victo’ and ‘Spada’), was evaluated for resistance to the two pathogens at seedling stage. Upon developing a genetic map of 8726 SNP loci, linkage analysis identified three resistance Quantitative Trait Loci (QTLs), with ‘Victo’ contributing the resistant alleles to all loci. One major QTL (QPm.gb-7A) was detected in response to Blumeria graminis on chromosome 7A, which explained 90% of phenotypic variation (PV). The co-positional relationship with known powdery mildew (Pm) resistance loci suggested that a new source of resistance was identified in T. aestivum. Two QTLs were detected in response to Puccinia triticina: a major gene on chromosome 5D (QLr.gb-5D), explaining a total PV of about 59%, and a minor QTL on chromosome 2B (QLr.gb-2B). A positional relationship was observed between the QLr.gb-5D with the known Lr1 gene, but polymorphisms were found between the cloned Lr1 and the corresponding ‘Victo’ allele, suggesting that QLr.gb-5D could represent a new functional Lr1 allele. Lastly, upon anchoring the QTL on the T. aestivum reference genome, candidate genes were hypothesized on the basis of gene annotation and in silico gene expression analysis.
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Affiliation(s)
- Francesca Desiderio
- CREA Research Centre for Genomics and Bioinformatics, 29017 Fiorenzuola d’Arda, Italy; (E.M.); (L.C.)
- Correspondence: ; Tel.: +39-0523-983758
| | - Salim Bourras
- Department of Plant and Microbial Biology, University of Zurich, 8008 Zurich, Switzerland; (S.B.); (B.K.)
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, 75651 Uppsala, Sweden
| | - Elisabetta Mazzucotelli
- CREA Research Centre for Genomics and Bioinformatics, 29017 Fiorenzuola d’Arda, Italy; (E.M.); (L.C.)
| | - Diego Rubiales
- Institute for Sustainable Agriculture, CSIC, 14004 Córdoba, Spain;
| | - Beat Keller
- Department of Plant and Microbial Biology, University of Zurich, 8008 Zurich, Switzerland; (S.B.); (B.K.)
| | - Luigi Cattivelli
- CREA Research Centre for Genomics and Bioinformatics, 29017 Fiorenzuola d’Arda, Italy; (E.M.); (L.C.)
| | - Giampiero Valè
- DiSIT—Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, 13100 Vercelli, Italy;
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20
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Hewitt T, Müller MC, Molnár I, Mascher M, Holušová K, Šimková H, Kunz L, Zhang J, Li J, Bhatt D, Sharma R, Schudel S, Yu G, Steuernagel B, Periyannan S, Wulff B, Ayliffe M, McIntosh R, Keller B, Lagudah E, Zhang P. A highly differentiated region of wheat chromosome 7AL encodes a Pm1a immune receptor that recognizes its corresponding AvrPm1a effector from Blumeria graminis. THE NEW PHYTOLOGIST 2021; 229:2812-2826. [PMID: 33176001 PMCID: PMC8022591 DOI: 10.1111/nph.17075] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/01/2020] [Indexed: 05/05/2023]
Abstract
Pm1a, the first powdery mildew resistance gene described in wheat, is part of a complex resistance (R) gene cluster located in a distal region of chromosome 7AL that has suppressed genetic recombination. A nucleotide-binding, leucine-rich repeat (NLR) immune receptor gene was isolated using mutagenesis and R gene enrichment sequencing (MutRenSeq). Stable transformation confirmed Pm1a identity which induced a strong resistance phenotype in transgenic plants upon challenge with avirulent Blumeria graminis (wheat powdery mildew) pathogens. A high-density genetic map of a B. graminis family segregating for Pm1a avirulence combined with pathogen genome resequencing and RNA sequencing (RNAseq) identified AvrPm1a effector gene candidates. In planta expression identified an effector, with an N terminal Y/FxC motif, that induced a strong hypersensitive response when co-expressed with Pm1a in Nicotiana benthamiana. Single chromosome enrichment sequencing (ChromSeq) and assembly of chromosome 7A suggested that suppressed recombination around the Pm1a region was due to a rearrangement involving chromosomes 7A, 7B and 7D. The cloning of Pm1a and its identification in a highly rearranged region of chromosome 7A provides insight into the role of chromosomal rearrangements in the evolution of this complex resistance cluster.
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Affiliation(s)
- Tim Hewitt
- Agriculture & FoodCommonwealth Scientific & Industrial Research OrganizationGPO Box 1700CanberraACT2601Australia
- School of Life and Environmental SciencesPlant Breeding InstituteUniversity of Sydney107 Cobbitty RoadCobbittyNSW2570Australia
| | - Marion C. Müller
- Department of Plant and Microbial BiologyUniversity of ZurichZollikerstrasse 107Zürich8008Switzerland
| | - István Molnár
- Centre of the Region Haná for Biotechnological and Agricultural ResearchInstitute of Experimental Botany of the Czech Academy of SciencesŠlechtitelů 31Olomouc779 00Czech Republic
| | - Martin Mascher
- OT GaterslebenLeibniz Institute of Plant Genetics and Crop Plant ResearchCorrensstr. 3Stadt SeelandD‐06466Germany
| | - Kateřina Holušová
- Centre of the Region Haná for Biotechnological and Agricultural ResearchInstitute of Experimental Botany of the Czech Academy of SciencesŠlechtitelů 31Olomouc779 00Czech Republic
| | - Hana Šimková
- Centre of the Region Haná for Biotechnological and Agricultural ResearchInstitute of Experimental Botany of the Czech Academy of SciencesŠlechtitelů 31Olomouc779 00Czech Republic
| | - Lukas Kunz
- Department of Plant and Microbial BiologyUniversity of ZurichZollikerstrasse 107Zürich8008Switzerland
| | - Jianping Zhang
- Agriculture & FoodCommonwealth Scientific & Industrial Research OrganizationGPO Box 1700CanberraACT2601Australia
| | - Jianbo Li
- School of Life and Environmental SciencesPlant Breeding InstituteUniversity of Sydney107 Cobbitty RoadCobbittyNSW2570Australia
| | - Dhara Bhatt
- Agriculture & FoodCommonwealth Scientific & Industrial Research OrganizationGPO Box 1700CanberraACT2601Australia
| | - Raghvendra Sharma
- Agriculture & FoodCommonwealth Scientific & Industrial Research OrganizationGPO Box 1700CanberraACT2601Australia
| | - Seraina Schudel
- Department of Plant and Microbial BiologyUniversity of ZurichZollikerstrasse 107Zürich8008Switzerland
| | | | | | - Sambasivam Periyannan
- Agriculture & FoodCommonwealth Scientific & Industrial Research OrganizationGPO Box 1700CanberraACT2601Australia
| | | | - Mick Ayliffe
- Agriculture & FoodCommonwealth Scientific & Industrial Research OrganizationGPO Box 1700CanberraACT2601Australia
| | - Robert McIntosh
- School of Life and Environmental SciencesPlant Breeding InstituteUniversity of Sydney107 Cobbitty RoadCobbittyNSW2570Australia
| | - Beat Keller
- Department of Plant and Microbial BiologyUniversity of ZurichZollikerstrasse 107Zürich8008Switzerland
| | - Evans Lagudah
- Agriculture & FoodCommonwealth Scientific & Industrial Research OrganizationGPO Box 1700CanberraACT2601Australia
- School of Life and Environmental SciencesPlant Breeding InstituteUniversity of Sydney107 Cobbitty RoadCobbittyNSW2570Australia
| | - Peng Zhang
- School of Life and Environmental SciencesPlant Breeding InstituteUniversity of Sydney107 Cobbitty RoadCobbittyNSW2570Australia
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21
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Rollar S, Serfling A, Geyer M, Hartl L, Mohler V, Ordon F. QTL mapping of adult plant and seedling resistance to leaf rust (Puccinia triticina Eriks.) in a multiparent advanced generation intercross (MAGIC) wheat population. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:37-51. [PMID: 33201290 PMCID: PMC7813716 DOI: 10.1007/s00122-020-03657-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 07/28/2020] [Indexed: 05/22/2023]
Abstract
The Bavarian MAGIC Wheat population, comprising 394 F6:8 recombinant inbred lines was phenotyped for Puccinia triticina resistance in multi-years' field trials at three locations and in a controlled environment seedling test. Simple intervall mapping revealed 19 QTL, corresponding to 11 distinct chromosomal regions. The biotrophic rust fungus Puccinia triticina is one of the most important wheat pathogens with the potential to cause yield losses up to 70%. Growing resistant cultivars is the most cost-effective and environmentally friendly way to encounter this problem. The emergence of leaf rust races being virulent against common resistance genes increases the demand for wheat varieties with novel resistances. In the past decade, the use of complex experimental populations, like multiparent advanced generation intercross (MAGIC) populations, has risen and offers great advantages for mapping resistances. The genetic diversity of multiple parents, which has been recombined over several generations, leads to a broad phenotypic diversity, suitable for high-resolution mapping of quantitative traits. In this study, interval mapping was performed to map quantitative trait loci (QTL) for leaf rust resistance in the Bavarian MAGIC Wheat population, comprising 394 F6:8 recombinant inbred lines (RILs). Phenotypic evaluation of the RILs for adult plant resistance was carried out in field trials at three locations and two years, as well as in a controlled-environment seedling inoculation test. In total, interval mapping revealed 19 QTL, which corresponded to 11 distinct chromosomal regions controlling leaf rust resistance. Six of these regions may represent putative new QTL. Due to the elite parental material, RILs identified to be resistant to leaf rust can be easily introduced in breeding programs.
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Affiliation(s)
- Sandra Rollar
- Institute for Resistance Research and Stress Tolerance, Julius Kuehn-Institute, Erwin Baur‑Straße 27, 06484 Quedlinburg, Germany
| | - Albrecht Serfling
- Institute for Resistance Research and Stress Tolerance, Julius Kuehn-Institute, Erwin Baur‑Straße 27, 06484 Quedlinburg, Germany
| | - Manuel Geyer
- Bavarian State Research Center for Agriculture, Institute for Crop Science and Plant Breeding, Am Gereuth 8, Freising, Germany
| | - Lorenz Hartl
- Bavarian State Research Center for Agriculture, Institute for Crop Science and Plant Breeding, Am Gereuth 8, Freising, Germany
| | - Volker Mohler
- Bavarian State Research Center for Agriculture, Institute for Crop Science and Plant Breeding, Am Gereuth 8, Freising, Germany
| | - Frank Ordon
- Institute for Resistance Research and Stress Tolerance, Julius Kuehn-Institute, Erwin Baur‑Straße 27, 06484 Quedlinburg, Germany
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22
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Wu H, Kang Z, Li X, Li Y, Li Y, Wang S, Liu D. Identification of Wheat Leaf Rust Resistance Genes in Chinese Wheat Cultivars and the Improved Germplasms. PLANT DISEASE 2020; 104:2669-2680. [PMID: 32729796 DOI: 10.1094/pdis-12-19-2619-re] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Leaf rust is an important wheat disease that is a significant hindrance for wheat production in most areas of the world. Breeding resistant cultivars can effectively and economically control the disease. In the present study, a wheat collection consisting of 100 cultivars from China and 18 improved germplasms from global landrace donors together with 36 known single Lr gene lines were tested with 20 strains of Puccinia triticina Eriks. in the seedling stage to postulate the Lr gene in the cultivars and germplasms. In addition, 12 diagnostic molecular markers specific to 10 Lr genes were used to detect the presence of the Lr genes in the wheat collection. Resistance to leaf rust of these cultivars at the adult plant stage was tested in fields under natural infection during the 2016 to 2018 cropping seasons in Baoding, Hebei Province. The gene postulation combined with molecular marker detection showed that six Lr genes (Lr1, Lr26, Lr33, Lr34, Lr45, and Lr46) were identified in 44 wheat accessions, including 37 cultivars and seven improved germplasms. Among the 44 wheat accessions postulated with Lr genes, Lr1 was present in four accessions, Lr26 in 12 accessions, Lr33 in two accessions, Lr34 in 14 accessions, Lr45 in three accessions, and Lr46 in 16 accessions. In the collection of 118 cultivars/germplasms, 34 wheat lines displayed adult-plant resistance carrying Lr34, Lr46, and/or underdetermined genes. Therefore, a high level of leaf rust resistance can be achieved through the combination of all-stage resistance and adult-plant resistance genes together in wheat cultivars.
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Affiliation(s)
- Hui Wu
- College of Plant Protection, Hebei Agricultural University/Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, Hebei 071001, China
| | - Zhanhai Kang
- College of Plant Protection, Hebei Agricultural University/Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, Hebei 071001, China
| | - Xing Li
- College of Plant Protection, Hebei Agricultural University/Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, Hebei 071001, China
| | - Yanyan Li
- College of Plant Protection, Hebei Agricultural University/Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, Hebei 071001, China
| | - Yi Li
- College of Plant Protection, Hebei Agricultural University/Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, Hebei 071001, China
| | - Shuo Wang
- College of Plant Protection, Hebei Agricultural University/Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, Hebei 071001, China
| | - Daqun Liu
- College of Plant Protection, Hebei Agricultural University/Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, Hebei 071001, China
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23
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Gebrewahid TW, Zhang PP, Yao ZJ, Li ZF, Liu DQ. Identification of Leaf Rust Resistance Genes in Bread Wheat Cultivars from Ethiopia. PLANT DISEASE 2020; 104:2354-2361. [PMID: 32697658 DOI: 10.1094/pdis-12-19-2606-re] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Wheat leaf rust, caused by Puccinia triticina (Pt), is a widespread disease of bread wheat worldwide. In the present study, 50 wheat cultivars from Ethiopia and 34 differential lines, mostly near-isogenic lines (NILs) in the background of Thatcher with known resistance genes to leaf rust (Lr), were tested with 14 Pt races in the greenhouse to postulate Lr genes at the seedling stage. Field experiments were also conducted to identify adult plant responses to leaf rust in Baoding in the 2017-2018 and 2018-2019 growing seasons and in Zhoukou in the 2018-2019 growing season. Thirteen Lr genes (Lr1, Lr18, Lr3ka, Lr15, Lr26, Lr20, Lr14a, Lr30, Lr2a, Lr11, Lr34, Lr46, and Lr68) either singly or in combination were found in 39 cultivars. Known Lr genes were not present in the remaining 11 cultivars. Lr1 and Lr46, each in 13 cultivars, and Lr34 in 12 cultivars were the most commonly identified resistance genes. Less frequently identified genes included Lr26 (five cultivars); Lr30 and Lr18 (each present in four cultivars); Lr15, Lr3ka, and Lr2a (each identified in three cultivars); and Lr68 (two cultivars). Evidence for the existence of Lr11, Lr20, and Lr14a (each in one cultivar) was also obtained. Twenty-one cultivars were found to have slow rusting resistance to leaf rust in the field tests. The results should be valuable for cultivar selection with combinations of effective Lr genes and used in breeding new cultivars with improved resistance to leaf rust in Ethiopia and China.
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Affiliation(s)
- Takele Weldu Gebrewahid
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
- College of Agriculture, Aksum University, Shire-Indaslassie, Tigray 314, Ethiopia
| | - Pei-Pei Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
| | - Zhan-Jun Yao
- College of Agronomy, Agricultural University of Hebei/North China Key Laboratory for Crop Germplasm Resources, Baoding, Hebei 071001, China
| | - Zai-Feng Li
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
| | - Da-Qun Liu
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
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24
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Wan W, Xiao J, Li M, Tang X, Wen M, Cheruiyot AK, Li Y, Wang H, Wang X. Fine mapping of wheat powdery mildew resistance gene Pm6 using 2B/2G homoeologous recombinants induced by the ph1b mutant. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:1265-1275. [PMID: 31974668 DOI: 10.1007/s00122-020-03546-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 01/13/2020] [Indexed: 05/07/2023]
Abstract
Using the ph1b mutant, the recombination frequency between the homoeologous region of 2B and 2G was significantly increased. By this, we narrowed Pm6 to a 0.9 Mb physical region. The powdery mildew (Pm) resistance gene Pm6 from Triticum timopheevii (2n = 48, AAGG) was mapped to the long arm of chromosome 2G and introduced into common wheat in the form of 2B-2G introgressions. The introgression line IGV1-465 has the shortest 2G segment, which is estimated 37 Mb in size when referring to 2BL genome reference of Chinese Spring (CS). The further fine mapping of Pm6 was impeded by the inhibition of allogeneic chromosome recombination between 2B and 2G in the Pm6 region. In the present study, to overcome 2B/2G recombination suppression, a ph1b-based strategy was employed to produce introgressions with reduced 2G fragments for the fine mapping of Pm6. IGV1-465 was crossed and backcrossed to the CSph1b mutant to produce plants with increased 2B/2G chromosome pairing frequency at the Pm6 region. A total of 182 allogeneic recombinants were obtained through two-round screening, i.e., first round of screening of 820 BC1F2:3 progenies using the flanking markers CIT02g-14/CIT02g-19 and second round of screening of 642 BC1F2:4 progenies using the flanking markers CIT02g-13/CIT02g-18, respectively. Through marker analysis using 30 chromosome 2G-specific markers located in the Pm6 region, the identified recombinants were divided into 14 haplotypes. Pm resistance evaluation of these haplotypes enabled us to narrow Pm6 to a 0.9 Mb physical region of 2BL, flanked by markers CIT02g-20 and CIT02g-18. Six wheat varieties containing Pm6 were identified from a natural population, and they showed increased Pm resistance. This implied Pm6 is still effective, especially when used in combination with other Pm resistance genes.
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Affiliation(s)
- Wentao Wan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing, 210095, Jiangsu, China
| | - Jin Xiao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing, 210095, Jiangsu, China
| | - Mengli Li
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing, 210095, Jiangsu, China
| | - Xiong Tang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing, 210095, Jiangsu, China
| | - Mingxing Wen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing, 210095, Jiangsu, China
- Zhenjiang Institute of Agricultural Sciences, Jurong, 212400, Jiangsu, China
| | - Antony Kibet Cheruiyot
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing, 210095, Jiangsu, China
| | - Yingbo Li
- Biotech Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai, 201106, China
| | - Haiyan Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing, 210095, Jiangsu, China.
| | - Xiue Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing, 210095, Jiangsu, China.
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25
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Leonova IN. Genome-Wide Association Study of Powdery Mildew Resistance in Russian Spring Wheat (T. aestivum L.) Varieties. RUSS J GENET+ 2019. [DOI: 10.1134/s1022795419110085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Qi LL, Ma GJ, Li XH, Seiler GJ. Diversification of the downy mildew resistance gene pool by introgression of a new gene, Pl 35, from wild Helianthus argophyllus into oilseed and confection sunflowers (Helianthus annuus L.). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:2553-2565. [PMID: 31214741 DOI: 10.1007/s00122-019-03370-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/03/2019] [Indexed: 05/22/2023]
Abstract
We have mapped a new downy mildew resistance gene, Pl35, derived from wild Helianthus argophyllus to sunflower linkage group 1. New germplasms incorporating the Pl35 gene were developed for both oilseed and confection sunflower Sunflower downy mildew (DM), caused by the oomycete pathogen Plasmopara halstedii, is an economically important and widespread sunflower disease worldwide. Non-race-specific resistance is not available in sunflower, and breeding for DM resistance relies on race-specific resistance to control this disease. The discovery of the novel DM resistance genes is a long-term task due to the highly virulent and aggressive nature of the P. halstedii pathogen, which reduces the effectiveness of resistance genes. The objectives of this study were to: (1) transfer DM resistance from a wild sunflower species Helianthus argophyllus (PI 494576) into cultivated sunflowers; (2) map the resistance gene; and (3) develop diagnostic single-nucleotide polymorphism (SNP) markers for efficient targeting of the gene in breeding programs. The H. argophyllus accession PI 494576 previously identified with resistance to the most virulent P. halstedii race 777 was crossed with oilseed and confection sunflower in 2012. Molecular mapping using the BC2F2 and BC2F3 populations derived from the cross CONFSCLB1/PI 494576 located a new resistance gene Pl35 on linkage group 1 of the sunflower genome. The new gene Pl35 was successfully transferred from PI 494576 into cultivated sunflowers. SNP markers flanking Pl35 were surveyed in a validation panel of 548 diversified sunflower lines collected globally. Eleven SNP markers were found to be diagnostic for Pl35 SNP alleles, with four co-segregating with Pl35. The developed oilseed and confection germplasms with diagnostic SNP markers for Pl35 will be very useful resources for breeding of DM resistance in sunflower.
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Affiliation(s)
- L L Qi
- USDA-Agricultural Research Service, Edward T. Schafer Agricultural Research Center, 1616 Albrecht Blvd. N, Fargo, ND, 58102-2765, USA.
| | - G J Ma
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA
| | - X H Li
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA
| | - G J Seiler
- USDA-Agricultural Research Service, Edward T. Schafer Agricultural Research Center, 1616 Albrecht Blvd. N, Fargo, ND, 58102-2765, USA
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Fazlikhani L, Keilwagen J, Kopahnke D, Deising H, Ordon F, Perovic D. High Resolution Mapping of Rph MBR1012 Conferring Resistance to Puccinia hordei in Barley ( Hordeum vulgare L.). FRONTIERS IN PLANT SCIENCE 2019; 10:640. [PMID: 31191570 PMCID: PMC6541035 DOI: 10.3389/fpls.2019.00640] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/29/2019] [Indexed: 06/01/2023]
Abstract
Isolation of disease resistance genes in barley was hampered by the large genome size, but has become easy due to the availability of the reference genome sequence. During the last years, many genomic resources, e.g., the Illumina 9K iSelect, the 50K Infinium arrays, the Barley Genome Zipper, POPSEQ, and genotyping by sequencing (GBS), were developed that enable enhanced gene isolation in combination with the barley genome sequence. In the present study, we developed a fine map of the barley leaf rust resistance gene Rph MBR1012. 537 segmental homozygous recombinant inbred lines (RILs) derived from 4775 F2-plants were used to construct a high-resolution mapping population (HRMP). The Barley Genome Zipper, the 9K iSelect chip, the 50K Infinium chip and GBS were used to develop 56 molecular markers located in the target interval of 8 cM. This interval was narrowed down to about 0.07 cM corresponding to 0.44 Mb of the barley reference genome. Eleven low-confidence and 18 high-confidence genes were identified in this interval. Five of these are putative disease resistance genes and were subjected to allele-specific sequencing. In addition, comparison of the genetic map and the reference genome revealed an inversion of 1.34 Mb located distally to the resistance locus. In conclusion, the barley reference sequence and the respective gene annotation delivered detailed information about the physical size of the target interval, the genes located in the target interval and facilitated the efficient development of molecular markers for marker-assisted selection for RphMBR1012.
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Affiliation(s)
- Leila Fazlikhani
- Institute for Resistance Research and Stress Tolerance, Federal Research Centre for Cultivated Plants, Julius Kühn-Institute (JKI), Quedlinburg, Germany
- Department of Phytopathology and Plant Protection, Institute of Agricultural and Nutrition Sciences, Faculty of Natural Sciences III, Martin Luther University of Halle-Wittenberg, Halle, Germany
| | - Jens Keilwagen
- Institute for Biosafety in Plant Biotechnology, Federal Research Centre for Cultivated Plants, Julius Kühn-Institute (JKI), Quedlinburg, Germany
| | - Doris Kopahnke
- Institute for Resistance Research and Stress Tolerance, Federal Research Centre for Cultivated Plants, Julius Kühn-Institute (JKI), Quedlinburg, Germany
| | - Holger Deising
- Department of Phytopathology and Plant Protection, Institute of Agricultural and Nutrition Sciences, Faculty of Natural Sciences III, Martin Luther University of Halle-Wittenberg, Halle, Germany
| | - Frank Ordon
- Institute for Resistance Research and Stress Tolerance, Federal Research Centre for Cultivated Plants, Julius Kühn-Institute (JKI), Quedlinburg, Germany
| | - Dragan Perovic
- Institute for Resistance Research and Stress Tolerance, Federal Research Centre for Cultivated Plants, Julius Kühn-Institute (JKI), Quedlinburg, Germany
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Watson-Haigh NS, Suchecki R, Kalashyan E, Garcia M, Baumann U. DAWN: a resource for yielding insights into the diversity among wheat genomes. BMC Genomics 2018; 19:941. [PMID: 30558550 PMCID: PMC6296097 DOI: 10.1186/s12864-018-5228-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 11/06/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Democratising the growing body of whole genome sequencing data available for Triticum aestivum (bread wheat) has been impeded by the lack of a genome reference and the large computational requirements for analysing these data sets. RESULTS DAWN (Diversity Among Wheat geNomes) integrates data from the T. aestivum Chinese Spring (CS) IWGSC RefSeq v1.0 genome with public WGS and exome data from 17 and 62 accessions respectively, enabling researchers and breeders alike to investigate genotypic differences between wheat accessions at the level of whole chromosomes down to individual genes. CONCLUSIONS Using DAWN we show that it is possible to visualise small and large chromosomal deletions, identify haplotypes at a glance and spot the consequences of selective breeding. DAWN allows us to detect the break points of alien introgression segments brought into an accession when transferring desired genes. Furthermore, we can find possible explanations for reduced recombination in parts of a chromosome, we can predict regions with linkage drag, and also look at diversity in centromeric regions.
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Affiliation(s)
- Nathan S. Watson-Haigh
- School of Agriculture, Food and Wine, University of Adelaide, PMB 1, Glen Osmond, 5064 SA Australia
- Bioinformatics Hub, School of Biological Sciences, University of Adelaide, Adelaide, SA 5005 Australia
| | - Radosław Suchecki
- School of Agriculture, Food and Wine, University of Adelaide, PMB 1, Glen Osmond, 5064 SA Australia
- CSIRO Agriculture and Food, Glen Osmond, Locked Bag 2, Adelaide, SA 5064 Australia
| | - Elena Kalashyan
- School of Agriculture, Food and Wine, University of Adelaide, PMB 1, Glen Osmond, 5064 SA Australia
| | - Melissa Garcia
- School of Agriculture, Food and Wine, University of Adelaide, PMB 1, Glen Osmond, 5064 SA Australia
| | - Ute Baumann
- School of Agriculture, Food and Wine, University of Adelaide, PMB 1, Glen Osmond, 5064 SA Australia
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Liu X, Yu H, Han F, Li Z, Fang Z, Yang L, Zhuang M, Lv H, Liu Y, Li Z, Li X, Zhang Y. Differentially Expressed Genes Associated with the Cabbage Yellow-Green-Leaf Mutant in the ygl-1 Mapping Interval with Recombination Suppression. Int J Mol Sci 2018; 19:ijms19102936. [PMID: 30261688 PMCID: PMC6212964 DOI: 10.3390/ijms19102936] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 09/07/2018] [Accepted: 09/20/2018] [Indexed: 01/02/2023] Open
Abstract
Although the genetics and preliminary mapping of the cabbage yellow-green-leaf mutant YL-1 has been extensively studied, transcriptome profiling associated with the yellow-green-leaf mutant of YL-1 has not been discovered. Positional mapping with two populations showed that the yellow-green-leaf gene ygl-1 is located in a recombination-suppressed genomic region. Then, a bulk segregant RNA-seq (BSR) was applied to identify differentially expressed genes (DEGs) using an F3 population (YL-1 × 11-192) and a BC2 population (YL-1 × 01-20). Among the 37,286 unique genes, 5730 and 4118 DEGs were detected between the yellow-leaf and normal-leaf pools from the F3 and BC2 populations. BSR analysis with four pools greatly reduced the number of common DEGs from 4924 to 1112. In the ygl-1 gene mapping region with suppressed recombination, 43 common DEGs were identified. Five of the DEGs were related to chloroplasts, including the down-regulated Bo1g087310, Bo1g094360, and Bo1g098630 and the up-regulated Bo1g059170 and Bo1g098440. The Bo1g098440 and Bo1g098630 genes were excluded by qRT-PCR. Hence, we inferred that these three DEGs (Bo1g094360, Bo1g087310, and Bo1g059170) in the mapping interval may be tightly associated with the development of the yellow-green-leaf mutant phenotype.
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Affiliation(s)
- Xiaoping Liu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Hailong Yu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Fengqing Han
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Zhiyuan Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Zhiyuan Fang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Limei Yang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Mu Zhuang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Honghao Lv
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Yumei Liu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Zhansheng Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Xing Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
| | - Yangyong Zhang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Beijing 100081, China.
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Tan C, Li G, Cowger C, Carver BF, Xu X. Characterization of Pm59, a novel powdery mildew resistance gene in Afghanistan wheat landrace PI 181356. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:1145-1152. [PMID: 29453526 DOI: 10.1007/s00122-018-3067-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 02/05/2018] [Indexed: 05/07/2023]
Abstract
A new powdery mildew resistance gene, designated Pm59, was identified in Afghanistan wheat landrace PI 181356, and mapped in the terminal region of the long arm of chromosome 7A. Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is an important foliar disease of wheat worldwide. In the Great Plains of the USA, Bgt isolates virulent to widely used powdery mildew resistance genes, such as Pm3a, were previously identified. The objectives of this study were to characterize the powdery mildew resistance gene in Afghanistan landrace PI 181356, which exhibited high resistance to Bgt isolates collected in southern Great Plains, and identify molecular markers for marker-assisted selection. An F2 population and F2:3 lines derived from a cross between PI 181356 and OK1059060-126135-3 were used in this study. Genetic analysis indicated that PI 181356 carries a single dominant gene, designated Pm59, in the terminal region of the long arm of chromosome 7A. Pm59 was mapped to an interval between sequence tag site (STS) markers Xmag1759 and Xmag1714 with genetic distances of 0.4 cM distal to Xmag1759 and 5.7 cM proximal to Xmag1714. Physical mapping suggested that Pm59 is in the distal bin 7AL 0.99-1.00. Pm59 is a novel powdery mildew resistance gene, and confers resistance to Bgt isolates collected from the Great Plains and the state of Montana. Therefore, Pm59 can be used to breed powdery mildew-resistant cultivars in these regions. Xmag1759 is ideal for marker-assisted selection of Pm59 in wheat breeding.
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Affiliation(s)
- Chengcheng Tan
- Wheat, Peanut, and Other Field Crops Research Unit, USDA-ARS, Stillwater, OK, 74075, USA
| | - Genqiao Li
- Wheat, Peanut, and Other Field Crops Research Unit, USDA-ARS, Stillwater, OK, 74075, USA
- Plant and Soil Science Department, Oklahoma State University, Stillwater, OK, 74078, USA
| | | | - Brett F Carver
- Plant and Soil Science Department, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Xiangyang Xu
- Wheat, Peanut, and Other Field Crops Research Unit, USDA-ARS, Stillwater, OK, 74075, USA.
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31
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Gebrewahid TW, Yao ZJ, Yan XC, Gao P, Li ZF. Identification of Leaf Rust Resistance Genes in Chinese Common Wheat Cultivars. PLANT DISEASE 2017; 101:1729-1737. [PMID: 30676921 DOI: 10.1094/pdis-02-17-0247-re] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Puccinia triticina Eriks. (Pt), the causal agent of wheat (Triticum aestivum L.) leaf rust, is the most widespread disease of common wheat worldwide. In the present study, 83 wheat cultivars from three provinces of China and 36 tester lines with known leaf rust resistance (Lr) genes were inoculated in the greenhouse with 18 Pt pathotypes to identify seedling effective Lr genes. Field tests were also performed to characterize slow leaf rusting responses at the adult plant growth stage in Baoding and Zhoukou in the 2014-15 and 2015-16 cropping seasons. Twelve Lr genes, viz. Lr1, Lr26, Lr3ka, Lr11, Lr10, Lr2b, Lr13, Lr21, Lr34, Lr37, Lr44, and Lr46 either singly or in combination were identified in 41 cultivars. Known Lr genes were not detected in the remaining 42 cultivars. The most commonly identified resistance genes were Lr26 (20 cultivars), Lr46 (18 cultivars), and Lr1 (eight cultivars). Less frequently detected genes included Lr13, Lr34, and Lr37 (each present in four cultivars), Lr10 (three cultivars), and Lr3ka and Lr44 (each in two cultivars). Evidence for the presence of genes Lr11, Lr2b, and Lr21 (each in one cultivar) was also obtained. Seventeen cultivars were found to have slow rusting resistance in both field growing seasons.
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Affiliation(s)
- Takele Weldu Gebrewahid
- College of Agronomy, Agricultural University of Hebei/North China Key Laboratory for Crop Germplasm Resources, Baoding 071001, China; and College of Agriculture, Aksum University, Ethiopia
| | - Zhan-Jun Yao
- College of Agronomy, Agricultural University of Hebei/North China Key Laboratory for Crop Germplasm Resources, Baoding 071001, China
| | - Xiao-Cui Yan
- College of Agronomy, Agricultural University of Hebei/North China Key Laboratory for Crop Germplasm Resources, Baoding 071001, China
| | - Pu Gao
- College of Plant Protection, Agricultural University of Hebei/Biological Control Center for Plant Disease and Pests of Hebei Province, Baoding 071001, China
| | - Zai-Feng Li
- College of Plant Protection, Agricultural University of Hebei/Biological Control Center for Plant Disease and Pests of Hebei Province, Baoding 071001, China
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32
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Liu N, Bai G, Lin M, Xu X, Zheng W. Genome-wide Association Analysis of Powdery Mildew Resistance in U.S. Winter Wheat. Sci Rep 2017; 7:11743. [PMID: 28924158 PMCID: PMC5603590 DOI: 10.1038/s41598-017-11230-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 08/21/2017] [Indexed: 01/23/2023] Open
Abstract
Wheat powdery mildew (PM), caused by Blumeria graminis f. sp. tritici, is a major fungal disease of wheat worldwide. It can cause considerable yield losses when epidemics occur. Use of genetic resistance is the most effective approach to control the disease. To determine the genomic regions responsible for PM resistance in a set of U.S. winter wheat and identify DNA markers in these regions, we conducted a genome-wide association study on a set of 185 U.S. winter wheat accessions using single nucleotide polymorphism (SNP) markers from 90 K wheat SNP arrays. We identified significant SNP markers linked to nine quantitative trait loci (QTLs) and simple sequence repeats (SSR) markers linked to three QTLs for PM resistance. Most of the QTLs in the US winter wheat population have been reported previously, but some such as these on chromosomes 1A, 6A and 1B have not been reported previously, and are likely new QTLs for PM resistance in U.S. winter wheat. The germplasm with immunity to PM are good sources of resistance for PM resistance breeding and the markers closely linked to the QTLs can be used in marker-assisted selection to improve wheat PM resistance after further validation.
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Affiliation(s)
- Na Liu
- College of Life Science, Henan Agricultural University, Zhengzhou, Henan, 450002, China.
- Department of Agronomy, Kansas State University, Manhattan, KS, 66506, USA.
| | - Guihua Bai
- USDA-ARS Hard Winter Wheat Genetics Research Unit, Manhattan, KS, 66506, USA
| | - Meng Lin
- Department of Agronomy, Kansas State University, Manhattan, KS, 66506, USA
| | - Xiangyang Xu
- Wheat, Peanut and Other Field Crops Research Unit, USDA-ARS, Stillwater, OK, 74075, USA
| | - Wenming Zheng
- College of Life Science, Henan Agricultural University, Zhengzhou, Henan, 450002, China
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33
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Aktar-Uz-Zaman M, Tuhina-Khatun M, Hanafi MM, Sahebi M. Genetic analysis of rust resistance genes in global wheat cultivars: an overview. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1304180] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Md Aktar-Uz-Zaman
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Bangladesh Agricultural Research Institute, Gazipur, Bangladesh
| | - Mst Tuhina-Khatun
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Bangladesh Rice Research Institute, Gazipur, Bangladesh
| | - Mohamed Musa Hanafi
- Laboratory of Plantation Science and Technology, Institute of Plantation Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mahbod Sahebi
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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Jo J, Venkatesh J, Han K, Lee HY, Choi GJ, Lee HJ, Choi D, Kang BC. Molecular Mapping of PMR1, a Novel Locus Conferring Resistance to Powdery Mildew in Pepper ( Capsicum annuum). FRONTIERS IN PLANT SCIENCE 2017; 8:2090. [PMID: 29276524 PMCID: PMC5727091 DOI: 10.3389/fpls.2017.02090] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 11/23/2017] [Indexed: 05/09/2023]
Abstract
Powdery mildew, caused by Leveillula taurica, is a major fungal disease affecting greenhouse-grown pepper (Capsicum annuum). Powdery mildew resistance has a complex mode of inheritance. In the present study, we investigated a novel powdery mildew resistance locus, PMR1, using two mapping populations: 102 'VK515' F2:3 families (derived from a cross between resistant parental line 'VK515R' and susceptible parental line 'VK515S') and 80 'PM Singang' F2 plants (derived from the F1 'PM Singang' commercial hybrid). Genetic analysis of the F2:3 'VK515' and F2 'PM Singang' populations revealed a single dominant locus for inheritance of the powdery mildew resistance trait. Genetic mapping showed that the PMR1 locus is located on syntenic regions of pepper chromosome 4 in a 4-Mb region between markers CZ2_11628 and HRM4.1.6 in 'VK515R'. Six molecular markers including one SCAR marker and five SNP markers were localized to a region 0 cM from the PMR1 locus. Two putative nucleotide-binding site leucine-rich repeat (NBS-LRR)-type disease resistance genes were identified in this PMR1 region. Genotyping-by-sequencing (GBS) and genetic mapping analysis revealed suppressed recombination in the PMR1 region, perhaps due to alien introgression. In addition, a comparison of species-specific InDel markers as well as GBS-derived SNP markers indicated that C. baccatum represents a possible source of such alien introgression of powdery mildew resistance into 'VK515R'. The molecular markers developed in this study will be especially helpful for marker-assisted selection in pepper breeding programs for powdery mildew resistance.
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Affiliation(s)
- Jinkwan Jo
- Department of Plant Science, Plant Genomics and Breeding Institute, and Vegetable Breeding Research Center, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Jelli Venkatesh
- Department of Plant Science, Plant Genomics and Breeding Institute, and Vegetable Breeding Research Center, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Koeun Han
- Department of Plant Science, Plant Genomics and Breeding Institute, and Vegetable Breeding Research Center, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Hea-Young Lee
- Department of Plant Science, Plant Genomics and Breeding Institute, and Vegetable Breeding Research Center, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Gyung Ja Choi
- Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon, South Korea
| | - Hee Jae Lee
- Department of Plant Science, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Doil Choi
- Department of Plant Science, Plant Genomics and Breeding Institute, and Vegetable Breeding Research Center, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Byoung-Cheorl Kang
- Department of Plant Science, Plant Genomics and Breeding Institute, and Vegetable Breeding Research Center, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- *Correspondence: Byoung-Cheorl Kang
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35
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Serfling A, Templer SE, Winter P, Ordon F. Microscopic and Molecular Characterization of the Prehaustorial Resistance against Wheat Leaf Rust ( Puccinia triticina) in Einkorn ( Triticum monococcum). FRONTIERS IN PLANT SCIENCE 2016; 7:1668. [PMID: 27881987 PMCID: PMC5101855 DOI: 10.3389/fpls.2016.01668] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 10/24/2016] [Indexed: 05/29/2023]
Abstract
Puccinia triticina f. sp. tritici (Eriks.), the causal agent of leaf rust, causes substantial yield losses in wheat production. In wheat many major leaf rust resistance genes have been overcome by virulent races. In contrast, the prehaustorial resistance (phr) against wheat leaf rust detected in the diploid wheat Einkorn (Triticum monoccocum var. monococcum) accession PI272560 confers race-independent resistance against isolates virulent on accessions harboring resistance genes located on the A-genome of Triticum aestivum. Phr in PI272560 leads to abortion of fungal development during the formation of haustorial mother cells and to increased hydrogen peroxide concentration in comparison to the susceptible accession 36554 (Triticum boeoticum ssp. thaoudar var. reuteri). Increased peroxidase and endochitinase activity was detected in PI272560 within 6 h after inoculation (hai). Comparative transcriptome profiling using Massive Analysis of cDNA Ends (MACE) in infected and non-infected leaves detected 14220 differentially expressed tags in PI272560 and 15472 in accession 36554. Of these 2908 and 3004, respectively, could be assigned to Gene Ontology (GO) categories of which 463 were detected in both accessions and 311 were differentially expressed between the accessions. In accordance with the concept of non-host resistance in PI272560, genes with similarity to peroxidases, chitinases, β-1,3-glucanases and other pathogenesis-related genes were up-regulated within the first 8 hai, whereas up-regulation of such genes was delayed in 36554. Moreover, a Phosphoribulokinase gene contributing to non-host resistance in rice against stripe rust was exclusively expressed in the resistant accession PI272560. Gene expression underpinned physiological and phenotypic observations at the site of infection and are in accordance with the concept of non-host resistance.
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Affiliation(s)
- Albrecht Serfling
- Institute for Resistance Research and Stress Tolerance, Julius Kuehn-Institute, Federal Research Centre for Cultivated PlantsQuedlinburg, Germany
- Interdisciplinary Center for Crop Plant Research, Martin Luther University Halle-WittenbergHalle, Germany
| | - Sven E. Templer
- Department of Plant Developmental Biology, Max Planck Institute for Plant Breeding ResearchCologne, Germany
| | | | - Frank Ordon
- Institute for Resistance Research and Stress Tolerance, Julius Kuehn-Institute, Federal Research Centre for Cultivated PlantsQuedlinburg, Germany
- Interdisciplinary Center for Crop Plant Research, Martin Luther University Halle-WittenbergHalle, Germany
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36
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Goutam U, Kukreja S, Yadav R, Salaria N, Thakur K, Goyal AK. Recent trends and perspectives of molecular markers against fungal diseases in wheat. Front Microbiol 2015; 6:861. [PMID: 26379639 PMCID: PMC4548237 DOI: 10.3389/fmicb.2015.00861] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 08/06/2015] [Indexed: 01/24/2023] Open
Abstract
Wheat accounts for 19% of the total production of major cereal crops in the world. In view of ever increasing population and demand for global food production, there is an imperative need of 40-60% increase in wheat production to meet the requirement of developing world in coming 40 years. However, both biotic and abiotic stresses are major hurdles for attaining the goal. Among the most important diseases in wheat, fungal diseases pose serious threat for widening the gap between actual and attainable yield. Fungal disease management, mainly, depends on the pathogen detection, genetic and pathological variability in population, development of resistant cultivars and deployment of effective resistant genes in different epidemiological regions. Wheat protection and breeding of resistant cultivars using conventional methods are time-consuming, intricate and slow processes. Molecular markers offer an excellent alternative in development of improved disease resistant cultivars that would lead to increase in crop yield. They are employed for tagging the important disease resistance genes and provide valuable assistance in increasing selection efficiency for valuable traits via marker assisted selection (MAS). Plant breeding strategies with known molecular markers for resistance and functional genomics enable a breeder for developing resistant cultivars of wheat against different fungal diseases.
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Affiliation(s)
- Umesh Goutam
- Department of Biotechnology, Lovely Professional University, PhagwaraPunjab, India
| | - Sarvjeet Kukreja
- Department of Biotechnology, Lovely Professional University, PhagwaraPunjab, India
| | - Rakesh Yadav
- Department of Bio and Nano technology, Guru Jambheshwar University of Science and TechnologyHisar, India
| | - Neha Salaria
- Department of Biotechnology, Lovely Professional University, PhagwaraPunjab, India
| | - Kajal Thakur
- Department of Biotechnology, Lovely Professional University, PhagwaraPunjab, India
| | - Aakash K. Goyal
- International Center for Agriculture Research in the Dry Areas (ICARDA)Morocco
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Liang Y, Zhang DY, Ouyang S, Xie J, Wu Q, Wang Z, Cui Y, Lu P, Zhang D, Liu ZJ, Zhu J, Chen YX, Zhang Y, Luo MC, Dvorak J, Huo N, Sun Q, Gu YQ, Liu Z. Dynamic evolution of resistance gene analogs in the orthologous genomic regions of powdery mildew resistance gene MlIW170 in Triticum dicoccoides and Aegilops tauschii. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2015; 128:1617-29. [PMID: 25993896 DOI: 10.1007/s00122-015-2536-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 05/02/2015] [Indexed: 05/12/2023]
Abstract
Rapid evolution of powdery mildew resistance gene MlIW170 orthologous genomic regions in wheat subgenomes. Wheat is one of the most important staple grain crops in the world and also an excellent model for plant ploidy evolution research with different ploidy levels from diploid to hexaploid. Powdery mildew disease caused by Blumeria graminis f.sp. tritici can result in significant loss in both grain yield and quality in wheat. In this study, the wheat powdery mildew resistance gene MlIW170 locus located at the Triticum dicoccoides chromosome 2B short arm was further characterized by constructing and sequencing a BAC-based physical map contig covering a 0.3 cM genetic distance region (880 kb) and developing additional markers to delineate the resistance gene within a 0.16 cM genetic interval (372 kb). Comparative analyses of the T. dicoccoides 2BS region with the orthologous Aegilops tauschii 2DS region showed great gene colinearity, including the structure organization of both types of RGA1/2-like and RPS2-like resistance genes. Comparative analyses with the orthologous regions from Brachypodium and rice genomes revealed considerable dynamic evolutionary changes that have re-shaped this MlIW170 region in the wheat genome, resulting in a high number of non-syntenic genes including resistance-related genes. This result might reflect the rapid evolution in R-gene regions. Phylogenetic analysis on these resistance-related gene sequences indicated the duplication of these genes in the MlIW170 region, occurred before the separation of the wheat B and D genomes.
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Affiliation(s)
- Yong Liang
- State Key Laboratory for Agrobiotechnology/Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
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Maccaferri M, Ricci A, Salvi S, Milner SG, Noli E, Martelli PL, Casadio R, Akhunov E, Scalabrin S, Vendramin V, Ammar K, Blanco A, Desiderio F, Distelfeld A, Dubcovsky J, Fahima T, Faris J, Korol A, Massi A, Mastrangelo AM, Morgante M, Pozniak C, N'Diaye A, Xu S, Tuberosa R. A high-density, SNP-based consensus map of tetraploid wheat as a bridge to integrate durum and bread wheat genomics and breeding. PLANT BIOTECHNOLOGY JOURNAL 2015; 13:648-63. [PMID: 25424506 DOI: 10.1111/pbi.12288] [Citation(s) in RCA: 184] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/26/2014] [Accepted: 10/03/2014] [Indexed: 05/20/2023]
Abstract
Consensus linkage maps are important tools in crop genomics. We have assembled a high-density tetraploid wheat consensus map by integrating 13 data sets from independent biparental populations involving durum wheat cultivars (Triticum turgidum ssp. durum), cultivated emmer (T. turgidum ssp. dicoccum) and their ancestor (wild emmer, T. turgidum ssp. dicoccoides). The consensus map harboured 30 144 markers (including 26 626 SNPs and 791 SSRs) half of which were present in at least two component maps. The final map spanned 2631 cM of all 14 durum wheat chromosomes and, differently from the individual component maps, all markers fell within the 14 linkage groups. Marker density per genetic distance unit peaked at centromeric regions, likely due to a combination of low recombination rate in the centromeric regions and even gene distribution along the chromosomes. Comparisons with bread wheat indicated fewer regions with recombination suppression, making this consensus map valuable for mapping in the A and B genomes of both durum and bread wheat. Sequence similarity analysis allowed us to relate mapped gene-derived SNPs to chromosome-specific transcripts. Dense patterns of homeologous relationships have been established between the A- and B-genome maps and between nonsyntenic homeologous chromosome regions as well, the latter tracing to ancient translocation events. The gene-based homeologous relationships are valuable to infer the map location of homeologs of target loci/QTLs. Because most SNP and SSR markers were previously mapped in bread wheat, this consensus map will facilitate a more effective integration and exploitation of genes and QTL for wheat breeding purposes.
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Affiliation(s)
- Marco Maccaferri
- Department of Agricultural Sciences (DipSA), University of Bologna, Bologna, Italy
| | - Andrea Ricci
- Department of Agricultural Sciences (DipSA), University of Bologna, Bologna, Italy
| | - Silvio Salvi
- Department of Agricultural Sciences (DipSA), University of Bologna, Bologna, Italy
| | - Sara Giulia Milner
- Department of Agricultural Sciences (DipSA), University of Bologna, Bologna, Italy
| | - Enrico Noli
- Department of Agricultural Sciences (DipSA), University of Bologna, Bologna, Italy
| | | | - Rita Casadio
- Biocomputing Group, University of Bologna, Bologna, Italy
| | - Eduard Akhunov
- Department of Plant Pathology, Kansas State University, Manhattan, KS, USA
| | - Simone Scalabrin
- Istituto di Genomica Applicata, Udine, Italy
- Dipartimento di Scienze Agrarie e Ambientali, University of Udine, Udine, Italy
| | - Vera Vendramin
- Istituto di Genomica Applicata, Udine, Italy
- Dipartimento di Scienze Agrarie e Ambientali, University of Udine, Udine, Italy
| | | | - Antonio Blanco
- Dipartimento di Biologia e Chimica Agro-forestale ed ambientale, Università di Bari, Aldo Moro, Bari, Italy
| | - Francesca Desiderio
- Consiglio per la ricerca e la sperimentazione in agricoltura, Genomics Research Centre, Fiorenzuola d'Arda, Italy
| | - Assaf Distelfeld
- Faculty of Life Sciences, Department of Molecular Biology and Ecology of Plants, Tel Aviv University, Tel Aviv, Israel
| | - Jorge Dubcovsky
- Department of Plant Sciences, University of California, Davis, CA, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Tzion Fahima
- Department of Evolutionary and Environmental Biology, Institute of Evolution, Faculty of Science and Science Education, University of Haifa, Haifa, Israel
| | - Justin Faris
- USDA-ARS Cereal Crops Research Unit, Fargo, ND, USA
| | - Abraham Korol
- Department of Evolutionary and Environmental Biology, Institute of Evolution, Faculty of Science and Science Education, University of Haifa, Haifa, Israel
| | - Andrea Massi
- Società Produttori Sementi Bologna (PSB), Argelato, Italy
| | - Anna Maria Mastrangelo
- Consiglio per la ricerca e la sperimentazione in agricoltura, Cereal Research Centre, Foggia, Italy
| | - Michele Morgante
- Istituto di Genomica Applicata, Udine, Italy
- Dipartimento di Scienze Agrarie e Ambientali, University of Udine, Udine, Italy
| | - Curtis Pozniak
- Crop Development Centre and Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | - Amidou N'Diaye
- Crop Development Centre and Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | - Steven Xu
- USDA-ARS Cereal Crops Research Unit, Fargo, ND, USA
| | - Roberto Tuberosa
- Department of Agricultural Sciences (DipSA), University of Bologna, Bologna, Italy
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Ouyang S, Zhang D, Han J, Zhao X, Cui Y, Song W, Huo N, Liang Y, Xie J, Wang Z, Wu Q, Chen YX, Lu P, Zhang DY, Wang L, Sun H, Yang T, Keeble-Gagnere G, Appels R, Doležel J, Ling HQ, Luo M, Gu Y, Sun Q, Liu Z. Fine physical and genetic mapping of powdery mildew resistance gene MlIW172 originating from wild emmer (Triticum dicoccoides). PLoS One 2014; 9:e100160. [PMID: 24955773 PMCID: PMC4067302 DOI: 10.1371/journal.pone.0100160] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 05/22/2014] [Indexed: 11/18/2022] Open
Abstract
Powdery mildew, caused by Blumeria graminis f. sp. tritici, is one of the most important wheat diseases in the world. In this study, a single dominant powdery mildew resistance gene MlIW172 was identified in the IW172 wild emmer accession and mapped to the distal region of chromosome arm 7AL (bin7AL-16-0.86-0.90) via molecular marker analysis. MlIW172 was closely linked with the RFLP probe Xpsr680-derived STS marker Xmag2185 and the EST markers BE405531 and BE637476. This suggested that MlIW172 might be allelic to the Pm1 locus or a new locus closely linked to Pm1. By screening genomic BAC library of durum wheat cv. Langdon and 7AL-specific BAC library of hexaploid wheat cv. Chinese Spring, and after analyzing genome scaffolds of Triticum urartu containing the marker sequences, additional markers were developed to construct a fine genetic linkage map on the MlIW172 locus region and to delineate the resistance gene within a 0.48 cM interval. Comparative genetics analyses using ESTs and RFLP probe sequences flanking the MlIW172 region against other grass species revealed a general co-linearity in this region with the orthologous genomic regions of rice chromosome 6, Brachypodium chromosome 1, and sorghum chromosome 10. However, orthologous resistance gene-like RGA sequences were only present in wheat and Brachypodium. The BAC contigs and sequence scaffolds that we have developed provide a framework for the physical mapping and map-based cloning of MlIW172.
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Affiliation(s)
- Shuhong Ouyang
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Dong Zhang
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Jun Han
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
- Agriculture University of Beijing, Beijing, China
| | - Xiaojie Zhao
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Yu Cui
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Wei Song
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
- Maize Research Center, Beijing Academy of Agricultural and Forestry Sciences, Beijing, China
| | - Naxin Huo
- USDA-ARS West Regional Research Center, Albany, California, United States of America
| | - Yong Liang
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Jingzhong Xie
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Zhenzhong Wang
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Qiuhong Wu
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Yong-Xing Chen
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Ping Lu
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - De-Yun Zhang
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Lili Wang
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Hua Sun
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institutes of Genetics & Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Tsomin Yang
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | | | - Rudi Appels
- Murdoch University, Perth, Western Australia, Australia
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of Plant Structural and Functional Genomics, Olomouc, Czech Republic
| | - Hong-Qing Ling
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institutes of Genetics & Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Mingcheng Luo
- Department of Plant Sciences, University of California, Davis, Davis, California, United States of America
| | - Yongqiang Gu
- USDA-ARS West Regional Research Center, Albany, California, United States of America
| | - Qixin Sun
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
| | - Zhiyong Liu
- State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China
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Jayatilake DV, Tucker EJ, Bariana H, Kuchel H, Edwards J, McKay AC, Chalmers K, Mather DE. Genetic mapping and marker development for resistance of wheat against the root lesion nematode Pratylenchus neglectus. BMC PLANT BIOLOGY 2013; 13:230. [PMID: 24377498 PMCID: PMC3923441 DOI: 10.1186/1471-2229-13-230] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 12/23/2013] [Indexed: 05/20/2023]
Abstract
BACKGROUND The Rlnn1 locus, which resides on chromosome 7A of bread wheat (Triticum aestivum L.) confers moderate resistance against the root lesion nematode Pratylenchus neglectus. Prior to this research, the exact linkage relationships of Rlnn1 with other loci on chromosome 7A were not clear and there were no simple codominant markers available for selection of Rlnn1 in wheat breeding. The objectives of the research reported here were to (1) develop an improved genetic map of the Rlnn1 region of chromosome 7A and (2) develop molecular markers that could be used in marker-assisted selection to improve resistance of wheat against P. neglectus. RESULTS A large-effect quantitative trait locus (QTL) for resistance against P. neglectus was genetically mapped using a population of Excalibur/Kukri doubled haploid lines. This QTL coincides in position with the rust resistance gene(s) Lr20/Sr15, the phytoene synthase gene Psy-A1 and 10 molecular markers, including five new markers designed using wheat-rice comparative genomics and wheat expressed sequence tags. Two of the new markers are suitable for use as molecular diagnostic tools to distinguish plants that carry Rlnn1 and Lr20/Sr15 from those that do not carry these resistance genes. CONCLUSIONS The genomic location of Rlnn1 was confirmed to be in the terminal region of the long arm of chromosome 7A. Molecular markers were developed that provide simple alternatives to costly phenotypic assessment of resistance against P. neglectus in wheat breeding. In Excalibur, genetic recombination seems to be completely suppressed in the Rlnn1 region.
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Affiliation(s)
- Dimanthi V Jayatilake
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
| | - Elise J Tucker
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
- Australian Centre for Plant Functional Genomics, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
| | - Harbans Bariana
- The University of Sydney Plant Breeding Institute – Cobbitty, PMB 4011, Narellan, NSW 2567, Australia
| | - Haydn Kuchel
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
- Australian Grain Technologies, PMB 1, Glen Osmond, SA 5064, Australia
| | - James Edwards
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
- Australian Centre for Plant Functional Genomics, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
- Australian Grain Technologies, PMB 1, Glen Osmond, SA 5064, Australia
| | - Alan C McKay
- South Australian Research and Development Institute, Plant Research Centre, 2b Hartley Grove, Urrbrae, SA 5064, Australia
| | - Ken Chalmers
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
- Australian Centre for Plant Functional Genomics, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
| | - Diane E Mather
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
- Australian Centre for Plant Functional Genomics, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
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Marone D, Russo MA, Laidò G, De Vita P, Papa R, Blanco A, Gadaleta A, Rubiales D, Mastrangelo AM. Genetic basis of qualitative and quantitative resistance to powdery mildew in wheat: from consensus regions to candidate genes. BMC Genomics 2013; 14:562. [PMID: 23957646 PMCID: PMC3765315 DOI: 10.1186/1471-2164-14-562] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 08/14/2013] [Indexed: 01/27/2023] Open
Abstract
Background Powdery mildew (Blumeria graminis f. sp. tritici) is one of the most damaging diseases of wheat. The objective of this study was to identify the wheat genomic regions that are involved in the control of powdery mildew resistance through a quantitative trait loci (QTL) meta-analysis approach. This meta-analysis allows the use of collected QTL data from different published studies to obtain consensus QTL across different genetic backgrounds, thus providing a better definition of the regions responsible for the trait, and the possibility to obtain molecular markers that will be suitable for marker-assisted selection. Results Five QTL for resistance to powdery mildew were identified under field conditions in the durum-wheat segregating population Creso × Pedroso. An integrated map was developed for the projection of resistance genes/ alleles and the QTL from the present study and the literature, and to investigate their distribution in the wheat genome. Molecular markers that correspond to candidate genes for plant responses to pathogens were also projected onto the map, particularly considering NBS-LRR and receptor-like protein kinases. More than 80 independent QTL and 51 resistance genes from 62 different mapping populations were projected onto the consensus map using the Biomercator statistical software. Twenty-four MQTL that comprised 2–6 initial QTL that had widely varying confidence intervals were found on 15 chromosomes. The co-location of the resistance QTL and genes was investigated. Moreover, from analysis of the sequences of DArT markers, 28 DArT clones mapped on wheat chromosomes have been shown to be associated with the NBS-LRR genes and positioned in the same regions as the MQTL for powdery mildew resistance. Conclusions The results from the present study provide a detailed analysis of the genetic basis of resistance to powdery mildew in wheat. The study of the Creso × Pedroso durum-wheat population has revealed some QTL that had not been previously identified. Furthermore, the analysis of the co-localization of resistance loci and functional markers provides a large list of candidate genes and opens up a new perspective for the fine mapping and isolation of resistance genes, and for the marker-assisted improvement of resistance in wheat.
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Chhuneja P, Kumar K, Stirnweis D, Hurni S, Keller B, Dhaliwal HS, Singh K. Identification and mapping of two powdery mildew resistance genes in Triticum boeoticum L. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2012; 124:1051-1058. [PMID: 22198205 DOI: 10.1007/s00122-011-1768-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 12/04/2011] [Indexed: 05/31/2023]
Abstract
Powdery mildew (PM) caused by Blumeria graminis f. sp. tritici (Bgt), is one of the important foliar diseases of wheat that can cause serious yield losses. Breeding for cultivars with diverse resources of resistance is the most promising approach for combating this disease. The diploid A genome progenitor species of wheat are an important resource for new variability for disease resistance genes. An accession of Triticum boeoticum (A(b)A(b)) showed resistance against a number of Bgt isolates, when tested using detached leaf segments. Inheritance studies in a recombinant inbred line population (RIL), developed from crosses of PM resistant T. boeoticum acc. pau5088 with a PM susceptible T. monococcum acc. pau14087, indicated the presence of two powdery mildew resistance genes in T. boeoticum acc. pau5088. Analysis of powdery mildew infection and molecular marker data of the RIL population revealed that both powdery mildew resistance genes are located on the long arm of chromosome 7A. Mapping was conducted using an integrated linkage map of 7A consisting of SSR, RFLP, STS, and DArT markers. These powdery mildew resistance genes are tentatively designated as PmTb7A.1 and PmTb7A.2. The PmTb7A.2 is closely linked to STS markers MAG2185 and MAG1759 derived from RFLP probes which are linked to powdery mildew resistance gene Pm1. This indicated that PmTb7A.2 might be allelic to Pm1. The PmTb7A.1, flanked by a DArT marker wPt4553 and an SSR marker Xcfa2019 in a 4.3 cM interval, maps proximal to PmT7A.2. PmTb7A.1 is putatively a new powdery mildew resistance gene. The powdery mildew resistance genes from T. boeoticum are currently being transferred to cultivated wheat background through marker-assisted backcrossing, using T. durum as bridging species.
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Affiliation(s)
- Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141004, India
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43
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Gurung S, Mamidi S, Bonman JM, Jackson EW, del Río LE, Acevedo M, Mergoum M, Adhikari TB. Identification of novel genomic regions associated with resistance to Pyrenophora tritici-repentis races 1 and 5 in spring wheat landraces using association analysis. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2011; 123:1029-41. [PMID: 21744229 DOI: 10.1007/s00122-011-1645-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Accepted: 06/22/2011] [Indexed: 05/07/2023]
Abstract
Tan spot, caused by Pyrenophora tritici-repentis, is a major foliar disease of wheat worldwide. Host plant resistance is the best strategy to manage this disease. Traditionally, bi-parental mapping populations have been used to identify and map quantitative trait loci (QTL) affecting tan spot resistance in wheat. The association mapping (AM) could be an alternative approach to identify QTL based on linkage disequilibrium (LD) within a diverse germplasm set. In this study, we assessed resistance to P. tritici-repentis races 1 and 5 in 567 spring wheat landraces from the USDA-ARS National Small Grains Collection (NSGC). Using 832 diversity array technology (DArT) markers, QTL for resistance to P. tritici-repentis races 1 and 5 were identified. A linear model with principal components suggests that at least seven and three DArT markers were significantly associated with resistance to P. tritici-repentis races 1 and 5, respectively. The DArT markers associated with resistance to race 1 were detected on chromosomes 1D, 2A, 2B, 2D, 4A, 5B, and 7D and explained 1.3-3.1% of the phenotypic variance, while markers associated with resistance to race 5 were distributed on 2D, 6A and 7D, and explained 2.2-5.9% of the phenotypic variance. Some of the genomic regions identified in this study correspond to previously identified loci responsible for resistance to P. tritici-repentis, offering validation for our AM approach. Other regions identified were novel and could possess genes useful for resistance breeding. Some DArT markers associated with resistance to race 1 also were localized in the same regions of wheat chromosomes where QTL for resistance to yellow rust, leaf rust and powdery mildew, have been mapped previously. This study demonstrates that AM can be a useful approach to identify and map novel genomic regions involved in resistance to P. tritici-repentis.
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Affiliation(s)
- S Gurung
- Department of Plant Pathology, North Dakota State University, NDSU Dept. 7660, P.O. Box 6050, Fargo, ND 58108-6050, USA
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Ben-David R, Xie W, Peleg Z, Saranga Y, Dinoor A, Fahima T. Identification and mapping of PmG16, a powdery mildew resistance gene derived from wild emmer wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2010; 121:499-510. [PMID: 20407741 DOI: 10.1007/s00122-010-1326-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2009] [Accepted: 03/12/2010] [Indexed: 05/04/2023]
Abstract
The gene-pool of wild emmer wheat, Triticum turgidum ssp. dicoccoides, harbors a rich allelic repertoire for disease resistance. In the current study, we made use of tetraploid wheat mapping populations derived from a cross between durum wheat (cv. Langdon) and wild emmer (accession G18-16) to identify and map a new powdery mildew resistance gene derived from wild emmer wheat. Initially, the two parental lines were screened with a collection of 42 isolates of Blumeria graminis f. sp. tritici (Bgt) from Israel and 5 isolates from Switzerland. While G18-16 was resistant to 34 isolates, Langdon was resistant only to 5 isolates and susceptible to 42 isolates. Isolate Bgt#15 was selected to differentiate between the disease reactions of the two genotypes. Segregation ratio of F(2-3) and recombinant inbreed line (F(7)) populations to inoculation with isolate Bgt#15 indicated the role of a single dominant gene in conferring resistance to Bgt#15. This gene, temporarily designated PmG16, was located on the distal region of chromosome arm 7AL. Genetic map of PmG16 region was assembled with 32 simple sequence repeat (SSR), sequence tag site (STS), Diversity array technology (DArT) and cleaved amplified polymorphic sequence (CAPS) markers and assigned to the 7AL physical bin map (7AL-16). Using four DNA markers we established colinearity between the genomic region spanning the PmG16 locus within the distal region of chromosome arm 7AL and the genomic regions on rice chromosome 6 and Brachypodium Bd1. A comparative analysis was carried out between PmG16 and other known Pm genes located on chromosome arm 7AL. The identified PmG16 may facilitate the use of wild alleles for improvement of powdery mildew resistance in elite wheat cultivars via marker-assisted selection.
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Affiliation(s)
- Roi Ben-David
- Department of Evolutionary and Environmental Biology, The Institute of Evolution, Faculty of Science and Science Education, University of Haifa, Mt. Carmel, 31905, Haifa, Israel
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DING YH, LIU H, SHI LH, WEN XL, ZHANG N, YANG WX, LIU DQ. Wheat Leaf Rust Resistance in 28 Chinese Wheat Mini-Core Collections. ACTA AGRONOMICA SINICA 2010. [DOI: 10.3724/sp.j.1006.2010.01126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hanemann A, Schweizer GF, Cossu R, Wicker T, Röder MS. Fine mapping, physical mapping and development of diagnostic markers for the Rrs2 scald resistance gene in barley. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2009; 119:1507-22. [PMID: 19789848 DOI: 10.1007/s00122-009-1152-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2009] [Accepted: 08/30/2009] [Indexed: 05/08/2023]
Abstract
The Rrs2 gene confers resistance to the fungal pathogen Rhynchosporium secalis which causes leaf scald, a major barley disease. The Rrs2 gene was fine mapped to an interval of 0.08 cM between markers 693M6_6 and P1D23R on the distal end of barley chromosome 7HS using an Atlas (resistant) x Steffi (susceptible) mapping population of 9,179 F(2)-plants. The establishment of a physical map of the Rrs2 locus led to the discovery that Rrs2 is located in an area of suppressed recombination within this mapping population. The analysis of 58 barley genotypes revealed a large linkage block at the Rrs2 locus extending over several hundred kb which is present only in Rrs2 carrying cultivars. Due to the lack of recombination in the mapping population and the presence of a Rrs2-specific linkage block, we assume a local chromosomal rearrangement (alien introgression or inversion) in Rrs2 carrying varieties. The variety analysis led to the discovery of eight SNPs which were diagnostic for the Rrs2 phenotype. Based on these SNPs diagnostic molecular markers (CAPS and pyrosequencing markers) were developed which are highly useful for marker-assisted selection in resistance gene pyramiding programmes for Rhynchosporium secalis resistance in barley.
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Affiliation(s)
- Anja Hanemann
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, 06466, Gatersleben, Germany.
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Le Cunff L, Garsmeur O, Raboin LM, Pauquet J, Telismart H, Selvi A, Grivet L, Philippe R, Begum D, Deu M, Costet L, Wing R, Glaszmann JC, D'Hont A. Diploid/polyploid syntenic shuttle mapping and haplotype-specific chromosome walking toward a rust resistance gene (Bru1) in highly polyploid sugarcane (2n approximately 12x approximately 115). Genetics 2008; 180:649-60. [PMID: 18757946 PMCID: PMC2535714 DOI: 10.1534/genetics.108.091355] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2008] [Accepted: 07/10/2008] [Indexed: 11/18/2022] Open
Abstract
The genome of modern sugarcane cultivars is highly polyploid (approximately 12x), aneuploid, of interspecific origin, and contains 10 Gb of DNA. Its size and complexity represent a major challenge for the isolation of agronomically important genes. Here we report on the first attempt to isolate a gene from sugarcane by map-based cloning, targeting a durable major rust resistance gene (Bru1). We describe the genomic strategies that we have developed to overcome constraints associated with high polyploidy in the successive steps of map-based cloning approaches, including diploid/polyploid syntenic shuttle mapping with two model diploid species (sorghum and rice) and haplotype-specific chromosome walking. Their applications allowed us (i) to develop a high-resolution map including markers at 0.28 and 0.14 cM on both sides and 13 markers cosegregating with Bru1 and (ii) to develop a physical map of the target haplotype that still includes two gaps at this stage due to the discovery of an insertion specific to this haplotype. These approaches will pave the way for the development of future map-based cloning approaches for sugarcane and other complex polyploid species.
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Perugini LD, Murphy JP, Marshall D, Brown-Guedira G. Pm37, a new broadly effective powdery mildew resistance gene from Triticum timopheevii. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2008; 116:417-25. [PMID: 18092148 DOI: 10.1007/s00122-007-0679-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2007] [Accepted: 11/10/2007] [Indexed: 05/18/2023]
Abstract
Powdery mildew is an important foliar disease in wheat, especially in areas with a cool or maritime climate. A dominant powdery mildew resistance gene transferred to the hexaploid germplasm line NC99BGTAG11 from T. timopheevii subsp. armeniacum was mapped distally on the long arm of chromosome 7A. Differential reactions were observed between the resistance gene in NC99BGTAG11 and the alleles of the Pm1 locus that is also located on chromosome arm 7AL. Observed segregation in F2:3 lines from the cross NC99BGTAG11xAxminster (Pm1a) demonstrate that germplasm line NC99BGTAG11 carries a novel powdery mildew resistance gene, which is now designated as Pm37. This new gene is highly effective against all powdery mildew isolates tested so far. Analyses of the population with molecular markers indicate that Pm37 is located 16 cM proximal to the Pm1 complex. Simple sequence repeat (SSR) markers Xgwm332 and Xwmc790 were located 0.5 cM proximal and distal, respectively, to Pm37. In order to identify new markers in the region, wheat expressed sequence tags (ESTs) located in the distal 10% of 7AL that were orthologous to sequences from chromosome 6 of rice were targeted. The two new EST-derived STS markers were located distal to Pm37 and one marker was closely linked to the Pm1a region. These new markers can be used in marker-assisted selection schemes to develop wheat cultivars with pyramids of powdery mildew resistance genes, including combinations of Pm37 in coupling linkage with alleles of the Pm1 locus.
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Affiliation(s)
- L D Perugini
- Department of Crop Science, North Carolina State University, Raleigh, NC 27695, USA.
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Association analysis of historical bread wheat germplasm using additive genetic covariance of relatives and population structure. Genetics 2007; 177:1889-913. [PMID: 17947425 DOI: 10.1534/genetics.107.078659] [Citation(s) in RCA: 360] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Linkage disequilibrium can be used for identifying associations between traits of interest and genetic markers. This study used mapped diversity array technology (DArT) markers to find associations with resistance to stem rust, leaf rust, yellow rust, and powdery mildew, plus grain yield in five historical wheat international multienvironment trials from the International Maize and Wheat Improvement Center (CIMMYT). Two linear mixed models were used to assess marker-trait associations incorporating information on population structure and covariance between relatives. An integrated map containing 813 DArT markers and 831 other markers was constructed. Several linkage disequilibrium clusters bearing multiple host plant resistance genes were found. Most of the associated markers were found in genomic regions where previous reports had found genes or quantitative trait loci (QTL) influencing the same traits, providing an independent validation of this approach. In addition, many new chromosome regions for disease resistance and grain yield were identified in the wheat genome. Phenotyping across up to 60 environments and years allowed modeling of genotype x environment interaction, thereby making possible the identification of markers contributing to both additive and additive x additive interaction effects of traits.
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Rhoné B, Raquin AL, Goldringer I. Strong linkage disequilibrium near the selected Yr17 resistance gene in a wheat experimental population. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2007; 114:787-802. [PMID: 17177061 DOI: 10.1007/s00122-006-0477-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2006] [Accepted: 11/24/2006] [Indexed: 05/13/2023]
Abstract
Dynamic management (DM) is a method of genetic resources conservation that aims at maintaining evolutionary process in subdivided populations cultivated in contrasted environments. Such populations are often submitted to strong natural selection as it was the case for experimental wheat populations maintained under DM. Understanding impacts of selection on genetic diversity around selected genes is necessary for the middle-term maintenance of genetic variability in DM populations. Evolution of diversity at six neutral markers located near the yellow rust resistance gene Yr17 has been studied for the parental lines and for generations 1, 5, 10 and 17 in one of the DM populations. Yr17 provided complete resistance to yellow rust in France until 1997 and thus was suspected to be under strong selection. The gene is located on a fragment introgressed in winter wheat from a wild species. The presence of the gene was estimated using a marker closely related to the gene. We showed that the Yr17 gene has been selected between generations 5 and 10. Generally, selection tends to reduce diversity around selected genes, generating linkage disequilibrium (LD) between a gene and adjacent markers. Here, the major effect of the Yr17 gene selection was a reduction of multilocus diversity and the maintenance of strong pre-existing LD in the zone surrounding the gene for a distance of 20 cM. As expected, the presence of the exogenous introgression was responsible for restrictions to recombination which contributed to the maintenance of strong correlations between loci. However, we found a noticeable number of recombinations around the gene indicating a progressive incorporation of the fragment into the wheat genome.
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Affiliation(s)
- Bénédicte Rhoné
- UMR de Génétique Végétale, CNRS-INRA-UPS-INAPG, Ferme du Moulon, 91190, Gif sur Yvette, France.
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