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Mohammadi M, Mohammadi R. Potential of tetraploid wheats in plant breeding: A review. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 346:112155. [PMID: 38885883 DOI: 10.1016/j.plantsci.2024.112155] [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: 03/22/2024] [Revised: 06/05/2024] [Accepted: 06/08/2024] [Indexed: 06/20/2024]
Abstract
Domestication syndrome, selection pressure, and modern plant breeding programs have reduced the genetic diversity of the wheat germplasm. For the genetic gains of breeding programs to be sustainable, plant breeders require a diverse gene pool to select genes for resistance to biotic stress factors, tolerance to abiotic stress factors, and improved quality and yield components. Thus, old landraces, subspecies and wild ancestors are rich sources of genetic diversity that have not yet been fully exploited, and it is possible to utilize this diversity. Compared with durum wheat, tetraploid wheat subspecies have retained much greater genetic diversity despite genetic drift and various environmental influences, and the identification and utilization of this diversity can make a greater contribution to the genetic enrichment of wheat. In addition, using the pre-breeding method, the valuable left-behind alleles in the wheat gene pool can be re-introduced through hybridization and introgressive gene flow to create a sustainable opportunity for the genetic gain of wheat. This review provides some insights about the potential of tetraploid wheats in plant breeding and the genetic gains made by them in plant breeding across past decades, and gathers the known functional information on genes/QTLs, metabolites, traits and their direct involvement in wheat resistance/tolerance to biotic/abiotic stresses.
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Affiliation(s)
- Majid Mohammadi
- Dryland Agricultural Research Institute (DARI), Sararood branch, AREEO, Kermanshah, Iran.
| | - Reza Mohammadi
- Dryland Agricultural Research Institute (DARI), Sararood branch, AREEO, Kermanshah, Iran.
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Leber R, Heuberger M, Widrig V, Jung E, Paux E, Keller B, Sánchez-Martín J. A diverse panel of 755 bread wheat accessions harbors untapped genetic diversity in landraces and reveals novel genetic regions conferring powdery mildew resistance. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2024; 137:88. [PMID: 38532180 PMCID: PMC10965746 DOI: 10.1007/s00122-024-04582-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 02/09/2024] [Indexed: 03/28/2024]
Abstract
KEY MESSAGE A bread wheat panel reveals rich genetic diversity in Turkish, Pakistani and Iranian landraces and novel resistance loci to diverse powdery mildew isolates via subsetting approaches in association studies. Wheat breeding for disease resistance relies on the availability and use of diverse genetic resources. More than 800,000 wheat accessions are globally conserved in gene banks, but they are mostly uncharacterized for the presence of resistance genes and their potential for agriculture. Based on the selective reduction of previously assembled collections for allele mining for disease resistance, we assembled a trait-customized panel of 755 geographically diverse bread wheat accessions with a focus on landraces, called the LandracePLUS panel. Population structure analysis of this panel based on the TaBW35K SNP array revealed an increased genetic diversity compared to 632 landraces genotyped in an earlier study and 17 high-quality sequenced wheat accessions. The additional genetic diversity found here mostly originated from Turkish, Iranian and Pakistani landraces. We characterized the LandracePLUS panel for resistance to ten diverse isolates of the fungal pathogen powdery mildew. Performing genome-wide association studies and dividing the panel further by a targeted subsetting approach for accessions of distinct geographical origin, we detected several known and already cloned genes, including the Pm2a gene. In addition, we identified 22 putatively novel powdery mildew resistance loci that represent useful sources for resistance breeding and for research on the mildew-wheat pathosystem. Our study shows the value of assembling trait-customized collections and utilizing a diverse range of pathogen races to detect novel loci. It further highlights the importance of integrating landraces of different geographical origins into future diversity studies.
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Affiliation(s)
- Rebecca Leber
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
| | - Matthias Heuberger
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
| | - Victoria Widrig
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
- Department of Microbiology and Genetics, Spanish-Portuguese Institute for Agricultural Research (CIALE), University of Salamanca, 37007, Salamanca, Spain
| | - Esther Jung
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
| | - Etienne Paux
- Université Clermont Auvergne, INRAE, GDEC, 63000, Clermont-Ferrand, France
- VetAgro Sup Campus Agronomique, 63370, Lempdes, France
| | - Beat Keller
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland.
| | - Javier Sánchez-Martín
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland.
- Department of Microbiology and Genetics, Spanish-Portuguese Institute for Agricultural Research (CIALE), University of Salamanca, 37007, Salamanca, Spain.
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Wang B, Meng T, Xiao B, Yu T, Yue T, Jin Y, Ma P. Fighting wheat powdery mildew: from genes to fields. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:196. [PMID: 37606731 DOI: 10.1007/s00122-023-04445-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/07/2023] [Indexed: 08/23/2023]
Abstract
KEY MESSAGE Host resistance conferred by Pm genes provides an effective strategy to control powdery mildew. The study of Pm genes helps modern breeding develop toward more intelligent and customized. Powdery mildew of wheat is one of the most destructive diseases seriously threatening the crop yield and quality worldwide. The genetic research on powdery mildew (Pm) resistance has entered a new era. Many Pm genes from wheat and its wild and domesticated relatives have been mined and cloned. Meanwhile, modern breeding strategies based on high-throughput sequencing and genome editing are emerging and developing toward more intelligent and customized. This review highlights mining and cloning of Pm genes, molecular mechanism studies on the resistance and avirulence genes, and prospects for genomic-assisted breeding for powdery mildew resistance in wheat.
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Affiliation(s)
- Bo Wang
- Yantai Key Laboratory of Characteristic Agricultural Biological Resource Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Ting Meng
- Yantai Key Laboratory of Characteristic Agricultural Biological Resource Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Bei Xiao
- Yantai Key Laboratory of Characteristic Agricultural Biological Resource Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Tianying Yu
- Yantai Key Laboratory of Characteristic Agricultural Biological Resource Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Tingyan Yue
- Yantai Key Laboratory of Characteristic Agricultural Biological Resource Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Yuli Jin
- Yantai Key Laboratory of Characteristic Agricultural Biological Resource Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Pengtao Ma
- Yantai Key Laboratory of Characteristic Agricultural Biological Resource Conservation and Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, 264005, China.
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Korchanová Z, Švec M, Janáková E, Lampar A, Majka M, Holušová K, Bonchev G, Juračka J, Cápal P, Valárik M. Identification, High-Density Mapping, and Characterization of New Major Powdery Mildew Resistance Loci From the Emmer Wheat Landrace GZ1. FRONTIERS IN PLANT SCIENCE 2022; 13:897697. [PMID: 35646009 PMCID: PMC9141293 DOI: 10.3389/fpls.2022.897697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 04/13/2022] [Indexed: 06/15/2023]
Abstract
Powdery mildew is one of the most devastating diseases of wheat which significantly decreases yield and quality. Identification of new sources of resistance and their implementation in breeding programs is the most effective way of disease control. Two major powdery mildew resistance loci conferring resistance to all races in seedling and adult plant stages were identified in the emmer wheat landrace GZ1. Their positions, effects, and transferability were verified using two linkage maps (1,510 codominant SNP markers) constructed from two mapping populations (276 lines in total) based on the resistant GZ1 line. The dominant resistance locus QPm.GZ1-7A was located in a 90 cM interval of chromosome 7AL and explains up to 20% of the trait variation. The recessive locus QPm.GZ1-2A, which provides total resistance, explains up to 40% of the trait variation and was located in the distal part of chromosome 2AL. The locus was saturated with 14 PCR-based markers and delimited to a 0.99 cM region which corresponds to 4.3 Mb of the cv. Zavitan reference genome and comprises 55 predicted genes with no apparent candidate for the QPm.GZ1-2A resistance gene. No recessive resistance gene or allele was located at the locus before, suggesting the presence of a new powdery mildew resistance gene in the GZ1. The mapping data and markers could be used for the implementation of the locus in breeding. Moreover, they are an ideal base for cloning and study of host-pathogen interaction pathways determined by the resistance genes.
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Affiliation(s)
- Zuzana Korchanová
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
- Department of Cell Biology and Genetics, Faculty of Science, Palacký University Olomouc, Olomouc, Czechia
| | - Miroslav Švec
- Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Eva Janáková
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
| | - Adam Lampar
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
- Department of Cell Biology and Genetics, Faculty of Science, Palacký University Olomouc, Olomouc, Czechia
| | - Maciej Majka
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
- Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Kateřina Holušová
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
| | - Georgi Bonchev
- Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Jakub Juračka
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
- Department of Computer Science, Faculty of Science, Palacký University Olomouc, Olomouc, Czechia
| | - Petr Cápal
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
| | - Miroslav Valárik
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
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Zhu K, Li M, Wu H, Zhang D, Dong L, Wu Q, Chen Y, Xie J, Lu P, Guo G, Zhang H, Zhang P, Li B, Li W, Dong L, Wang Q, Zhu J, Hu W, Guo L, Wang R, Yuan C, Li H, Liu Z, Hua W. Fine mapping of powdery mildew resistance gene MlWE74 derived from wild emmer wheat (Triticum turgidum ssp. dicoccoides) in an NBS-LRR gene cluster. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:1235-1245. [PMID: 35006335 DOI: 10.1007/s00122-021-04027-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
Powdery mildew resistance gene MlWE74, originated from wild emmer wheat accession G-748-M, was mapped in an NBS-LRR gene cluster of chromosome 2BS. Wheat powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is a globally devastating disease. Wild emmer wheat (Triticum turgidum var. dicoccoides) is a valuable genetic resource for improving disease resistance in common wheat. A powdery mildew resistance gene was transferred to hexaploid wheat line WE74 from wild emmer accession G-748-M. Genetic analysis revealed that the powdery mildew resistance in WE74 is controlled by a single dominant gene, herein temporarily designated MlWE74. Bulked segregant analysis (BSA) and molecular mapping delimited MlWE74 to the terminal region of chromosome 2BS flanking by markers WGGBD412 and WGGBH346 within a genetic interval of 0.25 cM and corresponding to 799.9 kb genomic region in the Zavitan reference sequence. Sequence annotation revealed two phosphoglycerate mutase-like genes, an alpha/beta-hydrolases gene, and five NBS-LRR disease resistance genes that could serve as candidates for map-based cloning of MlWE74. The geographical location analysis indicated that MlWE74 is mainly distributed in Rosh Pinna and Amirim regions, in the northern part of Israel, where environmental conditions are favorable to the occurrence of powdery mildew. Moreover, the co-segregated marker WGGBD425 is helpful in marker-assisted transfer of MlWE74 into elite cultivars.
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Affiliation(s)
- Keyu Zhu
- 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
| | - Miaomiao Li
- 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.
| | - Haibin Wu
- Academy of National Food and Strategic Reserves Administration, Beijing, 100037, China
| | - Deyun Zhang
- Chaozhou Hybribio Biochemistry Ltd., Chaozhou, 521011, Guangdong, China
| | - Lingli Dong
- 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
| | - Qiuhong Wu
- 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
| | - Yongxing Chen
- 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
| | - Jingzhong Xie
- 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
| | - Ping Lu
- 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
| | - Guanghao Guo
- 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
| | - Huaizhi Zhang
- 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
| | - Panpan Zhang
- 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
| | - Beibei Li
- 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
| | - Wenling Li
- 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
| | - Lei Dong
- 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
| | - Qifei Wang
- Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Jinghuan Zhu
- Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Wenli Hu
- Hebei Gaoyi Stock Seed Farm, Gaoyi, 051330, Hebei, China
| | - Liqiao Guo
- Hebei Gaoyi Stock Seed Farm, Gaoyi, 051330, Hebei, China
| | - Rongge Wang
- Hebei Gaoyi Stock Seed Farm, Gaoyi, 051330, Hebei, China
| | - Chengguo Yuan
- Hebei Gaoyi Stock Seed Farm, Gaoyi, 051330, Hebei, China
| | - Hongjie Li
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - 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.
| | - Wei Hua
- Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.
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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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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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Qiu L, Liu N, Wang H, Shi X, Li F, Zhang Q, Wang W, Guo W, Hu Z, Li H, Ma J, Sun Q, Xie C. Fine mapping of a powdery mildew resistance gene MlIW39 derived from wild emmer wheat (Triticum turgidum ssp. dicoccoides). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:2469-2479. [PMID: 33987716 DOI: 10.1007/s00122-021-03836-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Powdery mildew resistance gene MlIW39, originated from wild emmer wheat accession IW39, was mapped to a 460.3 kb genomic interval on wheat chromosome arm 2BS. Wheat powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is destructive disease and a significant threat to wheat production globally. The most effective way to control this disease is genetic resistance. However, when resistance genes become widely deployed in agriculture, their effectiveness is compromised by virulent variants that were previously minor components of the pathogen population or that arise from mutation. This necessitates continual search for new sources of resistance in both wheat and its near relatives. In this study, we produced a common wheat line 8D49 (87-1/IW39//2*87-1), which has all-stage immunity to Bgt isolate E09 and many other Chinese Bgt isolates, by transferring powdery mildew resistance from Israeli wild emmer wheat (WEW) accession IW39 to the susceptible common wheat line 87-1. Genetic analysis indicated that the powdery mildew resistance in 8D49 was controlled by a single dominant gene, temporarily designated MlIW39. Genetic linkage analyses with molecular markers showed that MlIW39 was located in a 0.7 cm genetic region between markers QB-3-16 and 7Seq546 on the short arm of chromosome 2B. Fine mapping using three large F2 populations delimited MlIW39 to a physical interval of approximately 460.3 kb region in the WEW reference genome (Zavitan v1.0) that contained six annotated protein-coding genes, four of which had gene structures similar to known disease resistance genes. This provides a foundation for map-based cloning of MlIW39. Markers 7Seq622 and 7Seq727 co-segregating with MlIW39 can be utilized for marker-assisted selection in further genetic studies and wheat breeding.
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Affiliation(s)
- Lina Qiu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Nannan Liu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Huifang Wang
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Xiaohan Shi
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Feng Li
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- Cotton Research Institute, Shanxi Agricultural University (Shanxi Academy of Agricultural Sciences), Yuncheng, 044000, China
| | - Qiang Zhang
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Weidong Wang
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Weilong Guo
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Zhaorong Hu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Hongjie Li
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jun Ma
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Qixin Sun
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Chaojie Xie
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China.
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9
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Wu Q, Zhao F, Chen Y, Zhang P, Zhang H, Guo G, Xie J, Dong L, Lu P, Li M, Ma S, Fahima T, Nevo E, Li H, Zhang Y, Liu Z. Bulked segregant CGT-Seq-facilitated map-based cloning of a powdery mildew resistance gene originating from wild emmer wheat (Triticum dicoccoides). PLANT BIOTECHNOLOGY JOURNAL 2021; 19:1288-1290. [PMID: 33949081 PMCID: PMC8313125 DOI: 10.1111/pbi.13609] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 04/13/2021] [Indexed: 05/31/2023]
Affiliation(s)
- Qiuhong Wu
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
| | - Fei Zhao
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Yongxing Chen
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Panpan Zhang
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Huaizhi Zhang
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Guanghao Guo
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Jingzhong Xie
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
| | - Lingli Dong
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
| | - Ping Lu
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
| | - Miaomiao Li
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
| | - Shengwei Ma
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
| | - Tzion Fahima
- Institute of Evolution and the Department of Evolutionary and Environmental BiologyUniversity of HaifaHaifaIsrael
| | - Eviatar Nevo
- Institute of Evolution and the Department of Evolutionary and Environmental BiologyUniversity of HaifaHaifaIsrael
| | - Hongjie Li
- The National Engineering Laboratory of Crop Molecular BreedingInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
| | - Yijing Zhang
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Zhiyong Liu
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
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10
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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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11
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Yin H, Fang X, Li P, Yang Y, Hao Y, Liang X, Bo C, Ni F, Ma X, Du X, Li A, Wang H, Nevo E, Kong L. Genetic mapping of a novel powdery mildew resistance gene in wild emmer wheat from "Evolution Canyon" in Mt. Carmel Israel. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:909-921. [PMID: 33392708 DOI: 10.1007/s00122-020-03741-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
A single dominant powdery mildew resistance gene MlNFS10 was identified in wild emmer wheat and mapped within a 0.3cM genetic interval spanning a 2.1Mb physical interval on chromosome arm 4AL. Wheat powdery mildew caused by Blumeria graminis forma specialis tritici (Bgt) is a globally devastating disease. The use of powdery mildew resistance genes from wild relatives of wheat is an effective method of disease management. Our previous research has shown that disruptive ecological selection has driven the discrete adaptations of the wild emmer wheat population on the south facing slope (SFS) and north facing slope (NFS) at the microsite of "Evolution Canyon" at Mount Carmel, Israel and demonstrated that 16 accessions in the NFS population display high resistance to 11 powdery mildew isolates (collected from different wheat fields in China). Here, we constructed bi-parental population by crossing the accession NFS-10 (resistant to 22 Bgt races collected from China in seedling resistance screen) and the susceptible line SFS2-12. Genetic analysis indicated that NFS-10 carries a single dominant gene, temporarily designated MlNFS10. Ultimately, 13 markers were successfully located within the long arm of chromosome 4A, thereby delineating MlNFS10 to a 0.3 cM interval covering 2.1 Mb (729275816-731365462) in the Chinese Spring reference sequence. We identified disease resistance-associated genes based on the RNA-seq analysis of both parents. The tightly linked InDel marker XWsdau73447 and SSR marker XWsdau72928 were developed and used for marker-assisted selection when MlNFS10 was introgressed into a hexaploid wheat background. Therefore, MlNFS10 can be used for improvement of germplasm in breeding programs for powdery mildew resistant cultivars.
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Affiliation(s)
- Huayan Yin
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China
- College of Agronomy, Qingdao Agricultural University, 266109, Qingdao, China
| | - Xiaojian Fang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China
| | - Penghuan Li
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China
| | - Yanhong Yang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China
| | - Yongchao Hao
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China
| | - Xiaomei Liang
- College of Agronomy, Qingdao Agricultural University, 266109, Qingdao, China
| | - Cunyao Bo
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China
| | - Fei Ni
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China
| | - Xin Ma
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China
| | - Xuye Du
- School of Life Sciences, Guizhou Normal University, Guiyang, Guizhou Province, China
| | - Anfei Li
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China
| | - Hongwei Wang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China.
| | - Eviatar Nevo
- Institute of Evolution, University of Haifa, Haifa, 3498838, Israel.
| | - Lingrang Kong
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, 271018, Tai'an, China.
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12
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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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13
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Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population. G3-GENES GENOMES GENETICS 2019; 9:1745-1757. [PMID: 30902891 PMCID: PMC6505172 DOI: 10.1534/g3.119.400068] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Bread wheat (Triticum aestivum L.) is one of the world’s most important crop species. The development of new varieties resistant to multiple pathogens is an ongoing task in wheat breeding, especially in times of increasing demand for sustainable agricultural practices. Despite this, little is known about the relations between various fungal disease resistances at the genetic level, and the possible consequences for wheat breeding strategies. As a first step to fill this gap, we analyzed the genetic relations of resistance to the three fungal diseases – powdery mildew (PM), septoria tritici blotch (STB), and tan spot (TS) – using a winter wheat multiparent advanced generation intercross population. Six, seven, and nine QTL for resistance to PM, STB, and TS, respectively, were genetically mapped. Additionally, 15 QTL were identified for the three agro-morphological traits plant height, ear emergence time, and leaf angle distribution. Our results suggest that resistance to STB and TS on chromosome 2B is conferred by the same genetic region. Furthermore, we identified two genetic regions on chromosome 1AS and 7AL, which are associated with all three diseases, but not always in a synchronal manner. Based on our results, we conclude that parallel marker-assisted breeding for resistance to the fungal diseases PM, STB, and TS appears feasible. Knowledge of the genetic co-localization of alleles with contrasting effects for different diseases, such as on chromosome 7AL, allows the trade-offs of selection of these regions to be better understood, and ultimately determined at the genic level.
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14
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Wu P, Hu J, Zou J, Qiu D, Qu Y, Li Y, Li T, Zhang H, Yang L, Liu H, Zhou Y, Zhang Z, Li J, Liu Z, Li H. Fine mapping of the wheat powdery mildew resistance gene Pm52 using comparative genomics analysis and the Chinese Spring reference genomic sequence. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:1451-1461. [PMID: 30719526 DOI: 10.1007/s00122-019-03291-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 01/19/2019] [Indexed: 05/07/2023]
Abstract
A high-resolution genetic linkage map was constructed using the comparative genomics analysis approach and the wheat reference genome, which placed wheat powdery mildew resistance gene Pm52 in a 0.21-cM genetic interval on chromosome arm 2BL. The gene Pm52 confers resistance to powdery mildew and has been previously mapped on chromosome arm 2BL in winter wheat cultivar Liangxing 99. Because of its effectiveness against the disease, this study was initiated to finely map Pm52 using the comparative genomics analysis approach and the wheat reference genomic sequence. Based on the EST sequences that were located in the chromosome region flanking Pm52, four EST-SSR markers were developed, and another nine SSR markers were developed using the comparative genomics technology. These thirteen markers were integrated into a genetic linkage map using an F2:3 subpopulation of the Liangxing 99 × Zhongzuo 9504 cross. Pm52 was mapped within a 3.2-cM genetic interval in the subpopulation that corresponded to a ~40-Mb genomic interval on chromosome arm 2BL of the Chinese Spring reference genome. The Pm52-flanking markers Xicsl163 and Xicsl62 identified 344 recombinant individuals from 8820 F2 plants. Nine SSR markers generated from the Chinese Spring genomic interval were incorporated into a high-resolution genetic linkage map, which placed Pm52 in a 0.21-cM genetic interval corresponding to 5.6-Mb genomic region. The constructed high-resolution genetic linkage map will facilitate the map-based cloning of Pm52 and its marker-assisted selection.
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Affiliation(s)
- Peipei Wu
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- Department of Plant Pathology, China Agricultural University, Beijing, 100193, China
| | - Jinghuang Hu
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jingwei Zou
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Dan Qiu
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yunfeng Qu
- College of Life Science and Technology, Harbin Normal University, Harbin, 150080, China
| | - Yahui Li
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Teng Li
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Hongjun Zhang
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Li Yang
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Hongwei Liu
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yang Zhou
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhongjun Zhang
- Department of Plant Pathology, China Agricultural University, Beijing, 100193, China
| | - Jingting Li
- College of Chemistry and Environment Engineering, Pingdingshan University, Pingdingshan, 467000, China.
| | - Zhiyong Liu
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Hongjie Li
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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15
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Sun H, Hu J, Song W, Qiu D, Cui L, Wu P, Zhang H, Liu H, Yang L, Qu Y, Li Y, Li T, Cheng W, Zhou Y, Liu Z, Li J, Li H. Pm61: a recessive gene for resistance to powdery mildew in wheat landrace Xuxusanyuehuang identified by comparative genomics analysis. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:2085-2097. [PMID: 29967989 DOI: 10.1007/s00122-018-3135-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 06/21/2018] [Indexed: 05/23/2023]
Abstract
A single recessive powdery mildew resistance gene Pm61 from wheat landrace Xuxusanyuehuang was mapped within a 0.46-cM genetic interval spanning a 1.3-Mb interval of the genomic region of chromosome arm 4AL. Epidemics of powdery mildew incited by the biotrophic fungus Blumeria graminis f. sp. tritici (Bgt) have caused significant yield reductions in many wheat (Triticum aestivum)-producing regions. Identification of powdery mildew resistance genes is required for sustainable improvement of wheat for disease resistance. Chinese wheat landrace Xuxusanyuehuang was resistant to several Bgt isolates at the seedling stage. Genetic analysis based on the inoculation of Bgt isolate E09 on the F1, F2, and F2:3 populations produced by crossing Xuxusanyuehuang to susceptible cultivar Mingxian 169 revealed that the resistance of Xuxusanyuehuang was controlled by a single recessive gene. Bulked segregant analysis and simple sequence repeat (SSR) mapping placed the gene on chromosome bin 4AL-4-0.80-1.00. Comparative genomics analysis was performed to detect the collinear genomic regions of Brachypodium distachyon, rice, sorghum, Aegilops tauschii, T. urartu, and T. turgidum ssp. dicoccoides. Based on the use of 454 contig sequences and the International Wheat Genome Sequence Consortium survey sequence of Chinese Spring wheat, four EST-SSR and seven SSR markers were linked to the gene. An F5 recombinant inbred line population derived from Xuxusanyuehuang × Mingxian 169 cross was used to develop the genetic linkage map. The gene was localized in a 0.46-cM genetic interval between Xgwm160 and Xicsx79 corresponding to 1.3-Mb interval of the genomic region in wheat genome. This is a new locus for powdery mildew resistance on chromosome arm 4AL and is designated Pm61.
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Affiliation(s)
- Huigai Sun
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- College of Life and Environmental Science, Minzu University of China, Beijing, 100081, China
| | - Jinghuang Hu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Wei Song
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- College of Biology, Hunan University, Changsha, 410082, China
| | - Dan Qiu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Lei Cui
- Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan, 030031, China
| | - Peipei Wu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Hongjun Zhang
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Hongwei Liu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Li Yang
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yunfeng Qu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- College of Life Science and Technology, Harbin Normal University, Harbin, 150080, China
| | - Yahui Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Teng Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Wei Cheng
- College of Chemistry and Environment Engineering, Pingdingshan University, Pingdingshan, 467000, China
| | - Yang Zhou
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhiyong Liu
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Jingting Li
- College of Chemistry and Environment Engineering, Pingdingshan University, Pingdingshan, 467000, China.
| | - Hongjie Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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16
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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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Huang L, Raats D, Sela H, Klymiuk V, Lidzbarsky G, Feng L, Krugman T, Fahima T. Evolution and Adaptation of Wild Emmer Wheat Populations to Biotic and Abiotic Stresses. ANNUAL REVIEW OF PHYTOPATHOLOGY 2016; 54:279-301. [PMID: 27296141 DOI: 10.1146/annurev-phyto-080614-120254] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The genetic bottlenecks associated with plant domestication and subsequent selection in man-made agroecosystems have limited the genetic diversity of modern crops and increased their vulnerability to environmental stresses. Wild emmer wheat, the tetraploid progenitor of domesticated wheat, distributed along a wide range of ecogeographical conditions in the Fertile Crescent, has valuable "left behind" adaptive diversity to multiple diseases and environmental stresses. The biotic and abiotic stress responses are conferred by series of genes and quantitative trait loci (QTLs) that control complex resistance pathways. The study of genetic diversity, genomic organization, expression profiles, protein structure and function of biotic and abiotic stress-resistance genes, and QTLs could shed light on the evolutionary history and adaptation mechanisms of wild emmer populations for their natural habitats. The continuous evolution and adaptation of wild emmer to the changing environment provide novel solutions that can contribute to safeguarding food for the rapidly growing human population.
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Affiliation(s)
- Lin Huang
- Department of Evolutionary and Environmental Biology and The Institute of Evolution, University of Haifa, Haifa 3498838, Israel;
| | - Dina Raats
- Department of Evolutionary and Environmental Biology and The Institute of Evolution, University of Haifa, Haifa 3498838, Israel;
| | - Hanan Sela
- The Institute for Cereal Crops Improvement, Tel Aviv University, 69978 Tel Aviv, Israel
| | - Valentina Klymiuk
- Department of Evolutionary and Environmental Biology and The Institute of Evolution, University of Haifa, Haifa 3498838, Israel;
| | - Gabriel Lidzbarsky
- Department of Evolutionary and Environmental Biology and The Institute of Evolution, University of Haifa, Haifa 3498838, Israel;
| | - Lihua Feng
- Department of Evolutionary and Environmental Biology and The Institute of Evolution, University of Haifa, Haifa 3498838, Israel;
| | - Tamar Krugman
- Department of Evolutionary and Environmental Biology and The Institute of Evolution, University of Haifa, Haifa 3498838, Israel;
| | - Tzion Fahima
- Department of Evolutionary and Environmental Biology and The Institute of Evolution, University of Haifa, Haifa 3498838, Israel;
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Liang J, Fu B, Tang W, Khan NU, Li N, Ma Z. Fine Mapping of Two Wheat Powdery Mildew Resistance Genes Located at the Cluster. THE PLANT GENOME 2016; 9. [PMID: 27898804 DOI: 10.3835/plantgenome2015.09.0084] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Powdery mildew caused by (DC.) f. sp. () is a globally devastating foliar disease of wheat ( L.). More than a dozen genes against this disease, identified from wheat germplasms of different ploidy levels, have been mapped to the region surrounding the locus on the long arm of chromosome 7A, which forms a resistance ()-gene cluster. and from einkorn wheat ( L.) were two of the genes belonging to this cluster. This study was initiated to fine map these two genes toward map-based cloning. Comparative genomics study showed that macrocolinearity exists between L. chromosome 1 (Bd1) and the - region, which allowed us to develop markers based on the wheat sequences orthologous to genes contained in the Bd1 region. With these and other newly developed and published markers, high-resolution maps were constructed for both and using large F populations. Moreover, a physical map of was constructed through chromosome walking with bacterial artificial chromosome (BAC) clones and comparative mapping. Eventually, and were restricted to a 0.12- and 0.86-cM interval, respectively. Based on the closely linked common markers, , , and (another powdery mildew resistance gene in the cluster) were not allelic to one another. Severe recombination suppression and disruption of synteny were noted in the region encompassing . These results provided useful information for map-based cloning of the genes in the cluster and interpretation of their evolution.
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Jin H, Wen W, Liu J, Zhai S, Zhang Y, Yan J, Liu Z, Xia X, He Z. Genome-Wide QTL Mapping for Wheat Processing Quality Parameters in a Gaocheng 8901/Zhoumai 16 Recombinant Inbred Line Population. FRONTIERS IN PLANT SCIENCE 2016; 7:1032. [PMID: 27486464 PMCID: PMC4949415 DOI: 10.3389/fpls.2016.01032] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 06/30/2016] [Indexed: 05/18/2023]
Abstract
Dough rheological and starch pasting properties play an important role in determining processing quality in bread wheat (Triticum aestivum L.). In the present study, a recombinant inbred line (RIL) population derived from a Gaocheng 8901/Zhoumai 16 cross grown in three environments was used to identify quantitative trait loci (QTLs) for dough rheological and starch pasting properties evaluated by Mixograph, Rapid Visco-Analyzer (RVA), and Mixolab parameters using the wheat 90 and 660 K single nucleotide polymorphism (SNP) chip assays. A high-density linkage map constructed with 46,961 polymorphic SNP markers from the wheat 90 and 660 K SNP assays spanned a total length of 4121 cM, with an average chromosome length of 196.2 cM and marker density of 0.09 cM/marker; 6596 new SNP markers were anchored to the bread wheat linkage map, with 1046 and 5550 markers from the 90 and 660 K SNP assays, respectively. Composite interval mapping identified 119 additive QTLs on 20 chromosomes except 4D; among them, 15 accounted for more than 10% of the phenotypic variation across two or three environments. Twelve QTLs for Mixograph parameters, 17 for RVA parameters and 55 for Mixolab parameters were new. Eleven QTL clusters were identified. The closely linked SNP markers can be used in marker-assisted wheat breeding in combination with the Kompetitive Allele Specific PCR (KASP) technique for improvement of processing quality in bread wheat.
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Affiliation(s)
- Hui Jin
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
- Department of Plant Genetics & Breeding/State Key Laboratory for Agrobiotechnology, China Agricultural UniversityBeijing, China
| | - Weie Wen
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
| | - Jindong Liu
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
| | - Shengnan Zhai
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
| | - Yan Zhang
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
| | - Jun Yan
- Wheat and Maize Research Center, Institute of Cotton Research, Chinese Academy of Agricultural SciencesAnyang, China
| | - Zhiyong Liu
- Department of Plant Genetics & Breeding/State Key Laboratory for Agrobiotechnology, China Agricultural UniversityBeijing, China
| | - Xianchun Xia
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
| | - Zhonghu He
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
- International Maize and Wheat Improvement Center (CIMMYT) China officeBeijing, China
- *Correspondence: Zhonghu He
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20
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Xu H, Yi Y, Ma P, Qie Y, Fu X, Xu Y, Zhang X, An D. Molecular tagging of a new broad-spectrum powdery mildew resistance allele Pm2c in Chinese wheat landrace Niaomai. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2015; 128:2077-84. [PMID: 26133735 DOI: 10.1007/s00122-015-2568-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 06/16/2015] [Indexed: 05/07/2023]
Abstract
A new broad-spectrum powdery mildew resistance allele Pm2c was identified and mapped in Chinese wheat landrace Niaomai. Chinese wheat landrace Niaomai showed resistance to 27 of 28 Chinese Blumeria graminis f. sp tritici (Bgt) races. Genetic analysis of an F2 population and its derived F2:3 families from the cross Niaomai × Mingxian 169 and backcross population, Niaomai/2*Mingxian 169, indicated that the resistance of Niaomai to Bgt races was conferred by a single dominant resistance gene, temporarily designated PmNM. Molecular tagging showed that PmNM was located on chromosome 5DS and flanked by SSR markers Xcfd81 and Xcfd78 with the genetic distances of 0.1/0.4 cM and 4.9/7.5 cM, respectively. Niaomai showed a different array of responses compared to lines with Pm2a, Pm2b, PmD57-5D, PmLX66, PmX3986-2 and Pm48 genes, sharing the same Xcfd81 allele but differing from Xcfd78 allele for Pm2a and Pm2b lines. Allelism tests based on crosses of Niaomai with Ulka/8*Cc and KM2939 showed that PmNM is allelic to Pm2a and Pm2b. We concluded that PmNM is a new allele of Pm2, re-designated Pm2c. Pm2c could be transferred into wheat cultivars by marker-assisted selection to improve the powdery mildew resistance of breeding cultivars/lines.
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Affiliation(s)
- Hongxing Xu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China
| | - Yanjie Yi
- School of Bioengineering, Henan University of Technology, Zhengzhou, 450001, Henan, China
| | - Pengtao Ma
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China
| | - Yanmin Qie
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China
| | - Xiaoyi Fu
- Shijiazhuang Academy of Agricultural and Forestry Sciences, Shijiazhuang, 050041, Hebei, China
| | - Yunfeng Xu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China
| | - Xiaotian Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China
| | - Diaoguo An
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China.
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21
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Chhuneja P, Yadav B, Stirnweis D, Hurni S, Kaur S, Elkot AF, Keller B, Wicker T, Sehgal S, Gill BS, Singh K. Fine mapping of powdery mildew resistance genes PmTb7A.1 and PmTb7A.2 in Triticum boeoticum (Boiss.) using the shotgun sequence assembly of chromosome 7AL. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2015; 128:2099-2111. [PMID: 26160336 DOI: 10.1007/s00122-015-2570-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Accepted: 06/19/2015] [Indexed: 06/04/2023]
Abstract
A novel powdery mildew resistance gene and a new allele of Pm1 were identified and fine mapped. DNA markers suitable for marker-assisted selection have been identified. Powdery mildew caused by Blumeria graminis is one of the most important foliar diseases of wheat and causes significant yield losses worldwide. Diploid A genome species are an important genetic resource for disease resistance genes. Two powdery mildew resistance genes, identified in Triticum boeoticum (A(b)A(b)) accession pau5088, PmTb7A.1 and PmTb7A.2 were mapped on chromosome 7AL. In the present study, shotgun sequence assembly data for chromosome 7AL were utilised for fine mapping of these Pm resistance genes. Forty SSR, 73 resistance gene analogue-based sequence-tagged sites (RGA-STS) and 36 single nucleotide polymorphism markers were designed for fine mapping of PmTb7A.1 and PmTb7A.2. Twenty-one RGA-STS, 8 SSR and 13 SNP markers were mapped to 7AL. RGA-STS markers Ta7AL-4556232 and 7AL-4426363 were linked to the PmTb7A.1 and PmTb7A.2, at a genetic distance of 0.6 and 6.0 cM, respectively. The present investigation established that PmTb7A.1 is a new powdery mildew resistance gene that confers resistance to a broad range of Bgt isolates, whereas PmTb7A.2 most probably is a new allele of Pm1 based on chromosomal location and screening with Bgt isolates showing differential reaction on lines with different Pm1 alleles. The markers identified to be linked to the two Pm resistance genes are robust and can be used for marker-assisted introgression of these genes to hexaploid wheat.
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Affiliation(s)
- Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141 004, India
| | - Bharat Yadav
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141 004, India
| | - Daniel Stirnweis
- Institute of Plant Biology, University of Zurich, Zurich, Switzerland
| | - Severine Hurni
- Institute of Plant Biology, University of Zurich, Zurich, Switzerland
| | - Satinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141 004, India
| | - Ahmed Fawzy Elkot
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141 004, India
- Wheat Research Department, Field Crops Research Institute, Agriculture Research Center, Giza, 12619, Egypt
| | - Beat Keller
- Institute of Plant Biology, University of Zurich, Zurich, Switzerland
| | - Thomas Wicker
- Institute of Plant Biology, University of Zurich, Zurich, Switzerland
| | - Sunish Sehgal
- Wheat Genetics Resource Center, Department of Plant Pathology, Kansas State University, Manhattan, KS, 66506, USA
- Department of Plant Science, South Dakota State University, Brookings, 57007, USA
| | - Bikram S Gill
- Wheat Genetics Resource Center, Department of Plant Pathology, Kansas State University, Manhattan, KS, 66506, USA
| | - Kuldeep Singh
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141 004, India.
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Lu P, Qin J, Wang G, Wang L, Wang Z, Wu Q, Xie J, Liang Y, Wang Y, Zhang D, Sun Q, Liu Z. Comparative fine mapping of the Wax 1 (W1) locus in hexaploid wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2015; 128:1595-603. [PMID: 25957646 DOI: 10.1007/s00122-015-2534-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 05/02/2015] [Indexed: 05/14/2023]
Abstract
By applying comparative genomics analyses, a high-density genetic linkage map of the Wax 1 ( W1 ) locus was constructed as a framework for map-based cloning. Glaucousness is described as the scattering effect of visible light from wax deposited on the cuticle of plant aerial organs. In wheat, the wax on leaves and stems is mainly controlled by two sets of genes: glaucousness loci (W1 and W2) and non-glaucousness loci (Iw1 and Iw2). Bulked segregant analysis (BSA) and simple sequence repeat (SSR) mapping showed that Wax1 (W1) is located on chromosome arm 2BS between markers Xgwm210 and Xbarc35. By applying comparative genomics analyses, colinearity genomic regions of the W1 locus on wheat 2BS were identified in Brachypodium distachyon chromosome 5, rice chromosome 4 and sorghum chromosome 6, respectively. Four STS markers were developed using the Triticum aestivum cv. Chinese Spring 454 contig sequences and the International Wheat Genome Sequencing Consortium (IWGSC) survey sequences. W1 was mapped into a 0.93 cM genetic interval flanked by markers XWGGC3197 and XWGGC2484, which has synteny with genomic regions of 56.5 kb in Brachypodium, 390 kb in rice and 31.8 kb in sorghum. The fine genetic map can serve as a framework for chromosome landing, physical mapping and map-based cloning of the W1 in wheat.
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Affiliation(s)
- Ping Lu
- State Key Laboratory for Agrobiotechnology/Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
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Molecular organization and comparative analysis of chromosome 5B of the wild wheat ancestor Triticum dicoccoides. Sci Rep 2015; 5:10763. [PMID: 26084265 PMCID: PMC4471722 DOI: 10.1038/srep10763] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 04/28/2015] [Indexed: 12/13/2022] Open
Abstract
Wild emmer wheat, Triticum turgidum ssp. dicoccoides is the wild relative of Triticum turgidum, the progenitor of durum and bread wheat, and maintains a rich allelic diversity among its wild populations. The lack of adequate genetic and genomic resources, however, restricts its exploitation in wheat improvement. Here, we report next-generation sequencing of the flow-sorted chromosome 5B of T. dicoccoides to shed light into its genome structure, function and organization by exploring the repetitive elements, protein-encoding genes and putative microRNA and tRNA coding sequences. Comparative analyses with its counterparts in modern and wild wheats suggest clues into the B-genome evolution. Syntenic relationships of chromosome 5B with the model grasses can facilitate further efforts for fine-mapping of traits of interest. Mapping of 5B sequences onto the root transcriptomes of two additional T. dicoccoides genotypes, with contrasting drought tolerances, revealed several thousands of single nucleotide polymorphisms, of which 584 shared polymorphisms on 228 transcripts were specific to the drought-tolerant genotype. To our knowledge, this study presents the largest genomics resource currently available for T. dicoccoides, which, we believe, will encourage the exploitation of its genetic and genomic potential for wheat improvement to meet the increasing demand to feed the world.
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Elkot AFA, Chhuneja P, Kaur S, Saluja M, Keller B, Singh K. Marker Assisted Transfer of Two Powdery Mildew Resistance Genes PmTb7A.1 and PmTb7A.2 from Triticum boeoticum (Boiss.) to Triticum aestivum (L.). PLoS One 2015; 10:e0128297. [PMID: 26066332 PMCID: PMC4466026 DOI: 10.1371/journal.pone.0128297] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 04/27/2015] [Indexed: 11/24/2022] Open
Abstract
Powdery mildew (PM), caused by Blumeria graminis f. sp. tritici, is one of the important wheat diseases, worldwide. Two PM resistance genes, designated as PmTb7A.1 and PmTb7A.2, were identified in T. boeoticum acc. pau5088 and mapped on chromosome 7AL approximately 48cM apart. Two resistance gene analogue (RGA)-STS markers Ta7AL-4556232 and 7AL-4426363 were identified to be linked to the PmTb7A.1 and PmTb7A.2, at a distance of 0.6cM and 6.0cM, respectively. In the present study, following marker assisted selection (MAS), the two genes were transferred to T. aestivum using T. durum as bridging species. As many as 12,317 florets of F1 of the cross T. durum /T. boeoticum were pollinated with T. aestivum lines PBW343-IL and PBW621 to produce 61 and 65 seeds, respectively, of three-way F1. The resulting F1s of the cross T. durum/T. boeoticum//T. aestivum were screened with marker flanking both the PM resistance genes PmTb7A.1 and PmTb7A.2 (foreground selection) and the selected plants were backcrossed to generate BC1F1. Marker assisted selection was carried both in BC1F1 and the BC2F1 generations. Introgression of alien chromatin in BC2F1 plants varied from 15.4-62.9 percent. Out of more than 110 BC2F1 plants showing introgression for markers linked to the two PM resistance genes, 40 agronomically desirable plants were selected for background selection for the carrier chromosome to identify the plants with minimum of the alien introgression. Cytological analysis showed that most plants have chromosome number ranging from 40-42. The BC2F2 plants homozygous for the two genes have been identified. These will be crossed to generate lines combining both the PM resistance genes but with minimal of the alien introgression. The PM resistance gene PmTb7A.1 maps in a region very close to Sr22, a stem rust resistance gene effective against the race Ug99. Analysis of selected plants with markers linked to Sr22 showed introgression of Sr22 from T. boeoticum in several BC2F1 plants. Thus, in addition to PM resistance, these progeny might also carry resistance to stem rust race Ug99.
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Affiliation(s)
| | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141 004, India
| | - Satinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141 004, India
| | - Manny Saluja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141 004, India
| | - Beat Keller
- Institute of Plant Biology, University of Zurich, Zurich, Switzerland
| | - Kuldeep Singh
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, 141 004, India
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