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Qian Z, Liu R, Liu X, Qie Y, Wang J, Yin Y, Xin Q, Yu N, Zhang J, Li Y, Li J, Dai Y, Liu C, Jin Y, Ma P. Bulked segregant RNA-seq reveals complex resistance expression profile to powdery mildew in wild emmer wheat W762. FRONTIERS IN PLANT SCIENCE 2024; 15:1387427. [PMID: 38817928 PMCID: PMC11137253 DOI: 10.3389/fpls.2024.1387427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 04/30/2024] [Indexed: 06/01/2024]
Abstract
Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is one of the most destructive fungal diseases threatening global wheat production. Exploring powdery mildew resistance (Pm) gene(s) and dissecting the molecular mechanism of the host resistance are critical to effectively and reasonably control this disease. Durum wheat (Triticum turgidum L. var. durumDesf.) is an important gene donor for wheat improvement against powdery mildew. In this study, a resistant durum wheat accession W762 was used to investigate its potential resistance component(s) and profile its expression pattern in responding to Bgt invasion using bulked segregant RNA-Seq (BSR-Seq) and further qRT-PCR verification. Genetic analysis showed that the powdery mildew resistance in W762 did not meet monogenic inheritance and complex genetic model might exist within the population of W762 × Langdon (susceptible durum wheat). After BSR-Seq, 6,196 consistently different single nucleotide polymorphisms (SNPs) were called between resistant and susceptible parents and bulks, and among them, 763 SNPs were assigned to the chromosome arm 7B. Subsequently, 3,653 differentially expressed genes (DEGs) between resistant and susceptible parents and bulks were annotated and analyzed by Gene Ontology (GO), Cluster of Orthologous Groups (COG), and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment. The potential regulated genes were selected and analyzed their temporal expression patterns following Bgt inoculation. As a result, nine disease-related genes showed distinctive expression profile after Bgt invasion and might serve as potential targets to regulate the resistance against powdery mildew in W762. Our study could lay a foundation for analysis of the molecular mechanism and also provide potential targets for the improvement of durable resistance against powdery mildew.
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Affiliation(s)
- Zejun Qian
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, China
| | - Ruishan Liu
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, China
| | - Xueqing Liu
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China
| | - Yanmin Qie
- Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences/Hebei Laboratory of Crop Genetic and Breeding, Shijiazhuang, China
| | - Jiangchun Wang
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China
| | - Yan Yin
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China
| | - Qingguo Xin
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China
| | - Ningning Yu
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, China
| | - Jiadong Zhang
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, China
| | - Yaoxue Li
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, China
| | - Jiatong Li
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, China
| | - Yintao Dai
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, China
| | - Cheng Liu
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Yuli Jin
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, China
| | - Pengtao Ma
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai, China
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Zhou Y, Gu Y, Zhang X, Wang W, Li Q, Wang B. QTL Mapping of Adult Plant Resistance to Powdery Mildew in Chinese Wheat Landrace Baidatou. PLANT DISEASE 2024; 108:1062-1072. [PMID: 38640452 DOI: 10.1094/pdis-12-22-2894-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/21/2024]
Abstract
Wheat powdery mildew, caused by the biotrophic fungus Blumeria graminis f. sp. tritici (Bgt), is one of the most devastating diseases affecting wheat throughout the world. Breeding and growing resistant wheat cultivars is one of the most economic and effective methods to control the disease, and as such, identifying and mapping the new and effective resistance genes is critical. Baidatou, a Chinese wheat landrace, shows excellent field resistance to powdery mildew. To identify the resistance gene(s) in Baidatou, 170 F7:8 recombinant inbred lines (RILs) derived from the cross Mingxian 169/Baidatou were evaluated for powdery mildew response at the adult-plant stage in the experimental fields in Yangling (YL) of Shaanxi Province and Tianshui (TS) in Gansu Province in 2019, 2020, and 2021. The relative area under disease progress curve (rAUDPC) of Mingxian 169/Baidatou F7:8 RILs indicated that the resistance of Baidatou to powdery mildew was controlled by quantitative trait loci (QTLs). Based on bulk segregation analysis combined with the 660K single nucleotide polymorphism (SNP) array and genotyping by target sequencing (16K SNP) of the entire RIL population, two QTLs, QPmbdt.nwafu-2AS and QPmbdt.nwafu-3AS, were identified, and these accounted for up to 44.5% of the phenotypic variation. One of the QTLs was located on the 3.32 cM genetic interval on wheat chromosome 2AS between the kompetitive allele-specific PCR markers AX-111012288 and AX_174233809, and another was located on the 9.6 cM genetic interval on chromosome 3AS between the SNP markers 3A_684044820 and 3A_686681822. These markers could be useful for successful breeding of powdery mildew resistance in wheat.
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Affiliation(s)
- Yongchao Zhou
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yudi Gu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaomei Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wenli Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Qiang Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Baotong Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
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Jin Y, Xiao L, Zheng J, Su F, Yu Z, Mu Y, Zhang W, Li L, Han G, Ma P. Genetic Analysis and Molecular Identification of the Powdery Mildew Resistance in 116 Elite Wheat Cultivars/Lines. PLANT DISEASE 2023; 107:3801-3809. [PMID: 37272049 DOI: 10.1094/pdis-04-23-0792-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is a destructive disease worldwide. Host resistance is the preferred method for limiting the disease epidemic, protecting the environment, and minimizing economic losses. In the present study, the reactions to powdery mildew for a collection of 600 wheat cultivars and breeding lines from different wheat-growing regions were tested using the Bgt isolate E09. Next, 116 resistant genotypes were identified and then crossed with susceptible wheat cultivars/lines to produce segregating populations for genetic analysis. Among them, 87, 19, and 10 genotypes displayed single, dual, and multiple genic inheritance, respectively. To identify the Pm gene(s) in those resistant genotypes, 16 molecular markers for 13 documented Pm genes were used to test the resistant and susceptible parents and their segregating populations. Of the 87 wheat genotypes that fitted the monogenic inheritance, 75 carried the Pm2a allele. Three, two, one, and two genotypes carried Pm21, Pm6, Pm4, and the recessive genes pm6 and pm42, respectively. Four genotypes did not carry any of the tested genes, suggesting that they might have other uncharacterized or new genes. The other 29 wheat cultivars/lines carried two or more of the tested Pm genes and/or other untested genes, including Pm2, Pm5, Pm6, and/or pm42. It was obvious that Pm2 was widely used in wheat production, whereas Pm1, Pm24, Pm33, Pm34, Pm35, Pm45, and Pm47 were not detected in any of these resistant wheat genotypes. This study clarified the genetic basis of the powdery mildew resistance of these wheat cultivars/lines to provide information for their rational utilization in different wheat-growing regions. Moreover, some wheat genotypes which may have novel Pm gene(s) were mined to enrich the diversity of resistance source.
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Affiliation(s)
- Yuli Jin
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai 264005, China
| | - Luning Xiao
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai 264005, China
| | - Jianpeng Zheng
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai 265500, China
| | - Fuyu Su
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai 264005, China
| | - Ziyang Yu
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai 264005, China
| | - Yanjun Mu
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai 264005, China
| | - Wenjing Zhang
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai 264005, China
| | - Linzhi Li
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai 265500, China
| | - Guohao Han
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China
| | - Pengtao Ma
- Yantai Key Laboratory of Characteristic Agricultural Bioresource Conservation & Germplasm Innovative Utilization, College of Life Sciences, Yantai University, Yantai 264005, China
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Iqbal A, Rehman ZU, Khan MR, Khan AM, Khan SU, Arif M, Iqbal J, Rehman MU, Ali M, Qasim M, Ali I, Facho ZH, Hussain M, Hussain I, Ahmad J, Ali S. Field response and molecular screening of European wheat germplasm against powdery mildew at the Himalayan region of Pakistan. J Appl Genet 2023; 64:667-678. [PMID: 37749479 DOI: 10.1007/s13353-023-00789-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 08/30/2023] [Accepted: 09/07/2023] [Indexed: 09/27/2023]
Abstract
Wheat powdery mildew possesses a significant threat to wheat crops not only on a global scale but also in the northern region of Pakistan. Recognizing the need for effective measures, the exploration and utilization of exotic germplasm take on critical importance. To address this, a series of trials were made to investigate the response of 30 European (EU) lines, in addition to the local checks (Siran, Atta-Habib (AH) and Ghanimat-e-IBGE) against wheat powdery mildew at the Himalayan region of Pakistan. The study involved field testing from 2018 to 2022 across multiple locations, resulting in 38 different environments (location × year). In addition to field evaluations, molecular genotyping was also performed. The disease was absent on the tested lines during 2018, 2019, and 2020 whereas it ranged from 0 to 100% at Chitral location during 2021, where 100% was observed only for one EU wheat line "Matrix." The disease prevailed only at Gilgit location (0-60% for EU wheat line "F236") and at Nagar location (0-10% for EU wheat lines Substance and Nelson) during the disease season of 2022. Most of the EU wheat lines showed very low ACI values, due to an overall low disease pressure. Matrix showed the maximum ACI (1.54) followed by Ritter (1.25) and Bli_autrichion (0.87), whereas the minimum (0.1) was for Substance, JB_Asano, and KWS_Loft followed by Canon (0.19), all exhibiting partial resistance. The molecular marker-based screening revealed that Pm38 was the most prevalent and detected in 100% of wheat lines followed by Pm39 (60%) and Pm8 (30%). Six wheat lines (20%) possessed all three Pm genes (Pm8, Pm38, and Pm39) concurrently. The variability observed in this study can be utilized in future breeding efforts aimed at developing resistant wheat varieties.
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Affiliation(s)
- Aamir Iqbal
- The University of Agriculture, Peshawar, Pakistan.
| | | | | | | | | | | | - Javaid Iqbal
- Department of Environmental Sciences, University of Lakki-Marwat, 28420, Khyber Pakhtunkhwa, Pakistan
| | - Mujeeb Ur Rehman
- The University of Agriculture, Peshawar, Pakistan
- Department of Soil Conservation, Chitral, Pakistan
| | - Minhaj Ali
- The University of Agriculture, Peshawar, Pakistan
- Department of Agriculture Extension, Parachinar, Pakistan
| | - Muhammad Qasim
- The University of Agriculture, Peshawar, Pakistan
- Department of Agriculture Research, Quetta, Pakistan
| | - Imran Ali
- The University of Agriculture, Peshawar, Pakistan
| | - Zakir Hussain Facho
- The University of Agriculture, Peshawar, Pakistan
- Department of Agriculture Extension, Skardu, Pakistan
| | - Muhammad Hussain
- The University of Agriculture, Peshawar, Pakistan
- Department of Agriculture Extension, Nagar, Pakistan
| | - Ijlal Hussain
- The University of Agriculture, Peshawar, Pakistan
- Department of Agriculture Extension, Hunza, Pakistan
| | - Jamshaid Ahmad
- University of Veterinary and & Animal Sciences, Lahore, Pakistan
| | - Sajid Ali
- The University of Agriculture, Peshawar, Pakistan.
- Department of Agriculture (Plant Breeding and Genetics), Hazara University, Mansehra, Pakistan.
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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: 6] [Impact Index Per Article: 6.0] [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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6
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Zhang W, Yu Z, Wang D, Xiao L, Su F, Mu Y, Zheng J, Li L, Yin Y, Yu T, Jin Y, Ma P. Characterization and identification of the powdery mildew resistance gene in wheat breeding line ShiCG15-009. BMC PLANT BIOLOGY 2023; 23:113. [PMID: 36823576 PMCID: PMC9948530 DOI: 10.1186/s12870-023-04132-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is a serious fungal disease that critically threatens the yield and quality of wheat. Utilization of host resistance is the most effective and economical method to control this disease. In our study, a wheat breeding line ShiCG15-009, released from Hebei Province, was highly resistant to powdery mildew at all stages. To dissect its genetic basis, ShiCG15-009 was crossed with the susceptible cultivar Yannong 21 to produce F1, F2 and F2:3 progenies. After genetic analysis, a single dominant gene, tentatively designated PmCG15-009, was proved to confer resistance to Bgt isolate E09. Further molecular markers analysis showed that PmCG15-009 was located on chromosome 2BL and flanked by markers XCINAU130 and XCINAU143 with the genetic distances 0.2 and 0.4 cM, respectively, corresponding to a physic interval of 705.14-723.48 Mb referred to the Chinese Spring reference genome sequence v2.1. PmCG15-009 was most likely a new gene differed from the documented Pm genes on chromosome 2BL since its different origin, genetic diversity, and physical position. To analyze and identify the candidate genes, six genes associated with disease resistance in the candidate interval were confirmed to be associated with PmCG15-009 via qRT-PCR analysis using the parents ShiCG15-009 and Yannong 21 and time-course analysis post-inoculation with Bgt isolate E09. To accelerate the transfer of PmCG15-009 using marker-assisted selection (MAS), 18 closely or co-segregated markers were evaluated and confirmed to be suitable for tracing PmCG15-009, when it was transferred into different wheat cultivars.
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Affiliation(s)
- Wenjing Zhang
- College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Ziyang Yu
- College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Dongmei Wang
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Luning Xiao
- College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Fuyu Su
- College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Yanjun Mu
- College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Jianpeng Zheng
- 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
| | - Yan Yin
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Tianying Yu
- College of Life Sciences, Yantai University, Yantai, 264005, China.
| | - Yuli Jin
- College of Life Sciences, Yantai University, Yantai, 264005, China.
| | - Pengtao Ma
- College of Life Sciences, Yantai University, Yantai, 264005, China.
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Han G, Yan H, Gu T, Cao L, Zhou Y, Liu W, Liu D, An D. Identification of a Wheat Powdery Mildew Dominant Resistance Gene in the Pm5 Locus for High-Throughput Marker-Assisted Selection. PLANT DISEASE 2023; 107:450-456. [PMID: 35815965 DOI: 10.1094/pdis-07-22-1545-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), poses a severe threat to wheat yield and quality worldwide. Rapid identification and the accurate transference of effective resistance genes are important to the development of resistant cultivars and the sustainable control of this disease. In the present study, the wheat line AL11 exhibited high levels of resistance to powdery mildew at both the seedling and adult plant stages. Genetic analysis of the AL11 × 'Shixin 733' mapping population revealed that its resistance was controlled by a single dominant gene, tentatively designated PmAL11. Using bulked segregant RNA-Seq and molecular marker analysis, PmAL11 was mapped to the Pm5 locus on chromosome 7B where it cosegregated with the functional marker Pm5e-KASP. Sequence alignment analysis revealed that the Pm5e-homologous sequence in AL11 was identical to the reported recessive gene Pm5e in wheat landrace 'Fuzhuang 30'. It appears that PmAL11 was most probably Pm5e, but it was mediated by a dominant inheritance pattern, so it should provide a valuable resistance resource for both genetic study and wheat breeding. To efficiently use and trace PmAL11 in breeding, a new kompetitive allele-specific PCR marker AL11-K2488 that cosegregated with this gene was developed and confirmed to be applicable in the different wheat backgrounds, thus promoting its use in the marker-assisted selection of PmAL11.
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Affiliation(s)
- Guohao Han
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050022, China
| | - Hanwen Yan
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050022, China
| | - Tiantian Gu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050022, China
| | - Lijun Cao
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050022, China
| | - Yilin Zhou
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Wei Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Dongcheng Liu
- State Key Laboratory of North China Crop Improvement and Regulation, College of Agronomy, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Diaoguo An
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050022, China
- Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, China
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8
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Bellundagi A, Ramya KT, Krishna H, Jain N, Shashikumara P, Singh PK, Singh GP, Prabhu KV. Marker-assisted backcross breeding for heat tolerance in bread wheat ( Triticum aestivum L.). Front Genet 2022; 13:1056783. [PMID: 36568399 PMCID: PMC9785257 DOI: 10.3389/fgene.2022.1056783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/23/2022] [Indexed: 12/14/2022] Open
Abstract
Manipulation of flowering time for adaptation through natural or genetic approaches may combat heat-stress damage that occurs at the reproductive stages in production conditions. HD2733, a popular wheat variety of the eastern plains of India, is largely sensitive to heat stress. Therefore, the current study aims to improve heat tolerance of HD2733 by introgression of QTLs associated with early anthesis and high kernel weight linked to markers Xbarc186 and Xgwm190, respectively, through marker-assisted backcross breeding (MABB) from a tolerant donor, WH730. A total of 124 simple sequence repeat (SSR) markers distributed evenly across the genome were used for the background selection. The alleles of Xbarc186 and Xgwm190 were fixed in BC2F1 and BC1F2 generations by selecting individual plants heterozygous for both marker loci and backcrossed with HD2733 and simultaneously selfed to generate BC2F1 and BC1F2 populations, respectively. Furthermore, the selected BC1F2 were selfed to generate the BC1F4 population. By background screening, a total of 39 BC2F3 and 21 BC1F4 families homozygous for the targeted QTLs with 90.9-97.9% and 86.8-88.3% RPG recoveries were selected. The best performing 17 BC2F3 and 10 BC1F4 lines were evaluated for various morpho-physiological traits. Phenotypic evaluation and multi-location trials of the introgressed lines under late sown conditions led to the selection of three promising lines with early anthesis and higher grain yield. The improved lines will serve as an excellent genetic material for functional genomics and expression studies to understand the molecular mechanisms and pathways underlying the stress tolerance.
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Affiliation(s)
- Amasiddha Bellundagi
- ICAR-Indian Institute of Millets Research, Hyderabad, India,ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - K. T. Ramya
- ICAR-Indian Institute of Oilseeds Research, Hyderabad, India
| | - Hari Krishna
- ICAR-Indian Agricultural Research Institute, New Delhi, India,*Correspondence: Hari Krishna, ; Gyanendra Pratap Singh,
| | - Neelu Jain
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - P. Shashikumara
- ICAR-Indian Institute of Millets Research, Hyderabad, India,ICAR-Indian Grassland and Fodder Research Institute, Jhansi, India
| | | | - Gyanendra Pratap Singh
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, India,*Correspondence: Hari Krishna, ; Gyanendra Pratap Singh,
| | - Kumble Vinod Prabhu
- Protection of Plant Varieties and Farmers’ Rights Authority, Government of India, New Delhi, India
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9
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Jin Y, Gu T, Li X, Liu H, Han G, Shi Z, Zhou Y, Fan J, Wang J, Liu W, Zhao H, An D. Characterization of a new splicing variant of powdery mildew resistance gene Pm4 in synthetic hexaploid wheat YAV249. FRONTIERS IN PLANT SCIENCE 2022; 13:1048252. [PMID: 36388539 PMCID: PMC9644285 DOI: 10.3389/fpls.2022.1048252] [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: 09/19/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is a destructive fungal disease of wheat throughout the world. Utilization of effective powdery mildew resistance genes and cultivars is considered as the most economic, efficient, and environmental-friendly method to control this disease. Synthetic hexaploid wheat (SHW), which was developed through hybridization of diploid Aegilops and tetraploid wheat, is a valuable genetic resource for resistance to powdery mildew. SHW line YAV249 showed high levels of resistance to powdery mildew at both the seedling and adult stages. Genetic analysis indicated that the resistance was controlled by a single dominant gene, temporarily designated PmYAV. Bulked segregant analysis with wheat 660K single nucleotide polymorphism (SNP) array scanning and marker analysis showed that PmYAV was located on chromosome 2AL and flanked by markers Xgdm93 and Xwgrc763, respectively, with genetic distances of 0.8 cM and 1.2 cM corresponding to a physic interval of 1.89 Mb on the Chinese Spring reference genome sequence v1.0. Sequence alignment analysis demonstrated that the sequence of PmYAV was consistent with that of Pm4a but generated an extra splicing event. When inoculated with different Bgt isolates, PmYAV showed a significantly different spectrum from Pm4a, hence it might be a new resistant resource for improvement of powdery mildew resistance. The flanked markers GDM93 and WGRC763, and the co-segregated markers BCD1231 and JS717/JS718 were confirmed to be easily performed in marker-assisted selection (MAS) of PmYAV. Using MAS strategy, PmYAV was transferred into the commercial cultivar Kenong 199 (KN199) and a wheat line YK13 was derived at generation BC3F3 from the population of YAV249/4*KN199 due to its excellent agronomic traits and resistance to powdery mildew. In conclusion, an alternative splicing variant of Pm4 was identified in this study, which informed the regulation of Pm4 gene function.
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Affiliation(s)
- Yuli Jin
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, China
| | - Tiantian Gu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, China
| | - Xiuquan Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hong Liu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, China
| | - Guohao Han
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, China
| | - Zhipeng Shi
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, China
| | - Yilin Zhou
- The State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jieru Fan
- The State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jing Wang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, China
| | - Wei Liu
- The State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - He Zhao
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Science/the Key Laboratory of Plant Genetic Engineering of Hebei Province, Shijiazhuang, Hebei, China
| | - Diaoguo An
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, China
- The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing, China
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10
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Mu Y, Gong W, Qie Y, Liu X, Li L, Sun N, Liu W, Guo J, Han R, Yu Z, Xiao L, Su F, Zhang W, Wang J, Han G, Ma P. Identification of the powdery mildew resistance gene in wheat breeding line Yannong 99102-06188 via bulked segregant exome capture sequencing. FRONTIERS IN PLANT SCIENCE 2022; 13:1005627. [PMID: 36147228 PMCID: PMC9489141 DOI: 10.3389/fpls.2022.1005627] [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: 07/28/2022] [Accepted: 08/15/2022] [Indexed: 06/16/2023]
Abstract
Powdery mildew of wheat (Triticum aestivum), caused by Blumeria graminis f.sp. tritici (Bgt), is a destructive disease that seriously threatens the yield and quality of its host. Identifying resistance genes is the most attractive and effective strategy for developing disease-resistant cultivars and controlling this disease. In this study, a wheat breeding line Yannong 99102-06188 (YN99102), an elite derivative line from the same breeding process as the famous wheat cultivar Yannong 999, showed high resistance to powdery mildew at the whole growth stages. Genetic analysis was carried out using Bgt isolate E09 and a population of YN99102 crossed with a susceptible parent Jinhe 13-205 (JH13-205). The result indicated that a single recessive gene, tentatively designated pmYN99102, conferred seedling resistance to the Bgt isolate E09. Using bulked segregant exome capture sequencing (BSE-Seq), pmYN99102 was physically located to a ~33.7 Mb (691.0-724.7 Mb) interval on the chromosome arm 2BL, and this interval was further locked in a 1.5 cM genetic interval using molecular markers, which was aligned to a 9.0 Mb physical interval (699.2-708.2 Mb). Based on the analysis of physical location, origin, resistant spectrum, and inherited pattern, pmYN99102 differed from those of the reported powdery mildew (Pm) resistance genes on 2BL, suggesting pmYN99102 is most likely a new Pm gene/allele in the targeted interval. To transfer pmYN99102 to different genetic backgrounds using marker-assisted selection (MAS), 18 closely linked markers were tested for their availability in different genetic backgrounds for MAS, and all markers expect for YTU103-97 can be used in MAS for tracking pmYN99102 when it transferred into those susceptible cultivars.
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Affiliation(s)
- Yanjun Mu
- College of Life Sciences, Yantai University, Yantai, China
| | - Wenping Gong
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Yanmin Qie
- Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences/Hebei Laboratory of Crop Genetic and Breeding, Shijiazhuang, China
| | - Xueqing Liu
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China
| | - Linzhi Li
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China
| | - Nina Sun
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China
| | - Wei Liu
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China
| | - Jun Guo
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Ran Han
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Ziyang Yu
- College of Life Sciences, Yantai University, Yantai, China
| | - Luning Xiao
- College of Life Sciences, Yantai University, Yantai, China
| | - Fuyu Su
- College of Life Sciences, Yantai University, Yantai, China
| | - Wenjing Zhang
- College of Life Sciences, Yantai University, Yantai, China
| | - Jiangchun Wang
- Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China
| | - Guohao Han
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
| | - Pengtao Ma
- College of Life Sciences, Yantai University, Yantai, China
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11
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Qiu D, Huang J, Guo G, Hu J, Li Y, Zhang H, Liu H, Yang L, Zhou Y, Yang B, Zhang Y, Liu Z, Li H. The Pm5e Gene Has No Negative Effect on Wheat Agronomic Performance: Evidence From Newly Established Near-Isogenic Lines. FRONTIERS IN PLANT SCIENCE 2022; 13:918559. [PMID: 35755686 PMCID: PMC9216190 DOI: 10.3389/fpls.2022.918559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 04/26/2022] [Indexed: 05/23/2023]
Abstract
Wheat genotypes resistant to powdery mildew (Blumeria graminis f. sp. tritici, Bgt) provide a sustainable means for disease control. We developed a pair of near-isogenic lines H962R and H962S with contrasting reactions to powdery mildew from a residue heterozygous line. H962R was resistant to 127 out of the 136 Bgt isolates collected from the major wheat-producing regions of China and showed a similar virulence/avirulence pattern as Fuzhuang 30, Xiaobaidong, and Hongquanmang carrying resistance allele of Pm5e, but H962S was resistant to none of them. A dominant gene was responsible for the powdery mildew resistance of H962R as revealed by the genetic analysis using segregating populations derived from a cross between H962R and H962S. Molecular marker analysis detected a resistance locus, designated PmH962, on a genetic interval of the chromosome arm 7BL where Pm5e resides. This locus was co-segregated with the functional marker of Pm5e. The PCR-based sequence alignment of Pm5e demonstrated that H962R had an identical sequence as Fuzhuang 30 (haplotype HapGA), and H962S possessed the same sequence as the powdery mildew susceptible cultivar Kenong 199. The genomic compositions of lines H962R and H962S were highly comparable as evidenced by only a small percentage of SNP variations detected by the 16K Genotyping by Target Sequencing (GBTS) SNP array and the 90K Illumina iSelect Wheat SNP array. The two lines performed similarly in the yield-related and plant growth traits investigated, except for greater kernel weight in H962R than in H962S. This indicates that Pm5e has no deleterious effect and can be served as an excellent disease resistance gene in wheat breeding.
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Affiliation(s)
- Dan Qiu
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jiang Huang
- School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin, 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, China
- College of Advanced Agricultural Science, University of Chinese Academy of Sciences, Beijing, China
| | - Jinghuang Hu
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yahui Li
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Hongjun Zhang
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hongwei Liu
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Li Yang
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yang Zhou
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Benzhou Yang
- Institute of Wheat Sciences, Jining Academy of Agricultural Sciences, Jining, China
| | - Yudan Zhang
- Institute of Wheat Sciences, Jining Academy of Agricultural Sciences, Jining, 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, China
- College of Advanced Agricultural Science, University of Chinese Academy of Sciences, Beijing, China
| | - Hongjie Li
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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12
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Wang W, He H, Gao H, Xu H, Song W, Zhang X, Zhang L, Song J, Liu C, Liu K, Ma P. Characterization of the Powdery Mildew Resistance Gene in Wheat Breeding Line KN0816 and Its Evaluation in Marker-Assisted Selection. PLANT DISEASE 2021; 105:4042-4050. [PMID: 34260283 DOI: 10.1094/pdis-05-21-0896-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Wheat powdery mildew, caused by Blumeria graminis (DC.) Speer f. sp. tritici is a destructive disease seriously threatening yield and quality of common wheat (Triticum aestivum L., 2n=6x=42, AABBDD). Characterization of resistance genes against powdery mildew is useful in parental selection and for developing disease-resistant cultivars. Chinese wheat breeding line KN0816 has superior agronomic performance and resistance to powdery mildew at all growth stages. Genetic analysis using populations of KN0816 crossed with different susceptible parents indicated that a single dominant gene, tentatively designated PmKN0816, conferred seedling resistance to different B. graminis f. sp. tritici isolates. Using a bulked segregant analysis, PmKN0816 was mapped to the Pm6 interval on chromosome arm 2BL using polymorphic markers linked to the cataloged genes Pm6, Pm52, and Pm64, and flanked by the markers CISSR02g-6 and CIT02g-2, both with genetic distances of 0.7 cM. Analysis of closely linked molecular markers indicated that the marker alleles of PmKN0816 differed from those of other powdery mildew resistance genes on 2BL, including Pm6, Pm33, Pm51, Pm64, and PmQ. Based on the genetic and physical locations and response pattern to different B. graminis f. sp. tritici isolates, PmKN0816 is most likely a new powdery mildew resistance gene and possesses effective resistance to all the 14 tested B. graminis f. sp. tritici isolates. In view of the elite agronomic performance of KN0816 combined with the resistance, PmKN0816 is expected to become a valuable resistance gene in wheat breeding. To transfer PmKN0816 to different genetic backgrounds using marker-assisted selection (MAS), closely linked markers of PmKN0816 were evaluated, and four of them (CIT02g-2, CISSR02g-6, CIT02g-10, and CIT02g-17) were confirmed to be applicable for MAS in different genetic backgrounds.
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Affiliation(s)
- Wenrui Wang
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
| | - Huagang He
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Huiming Gao
- College of Food and Biology, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China
| | - Hongxing Xu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Wenyue Song
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
| | - Xu Zhang
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
| | - Lipei Zhang
- Yantai Jien Biological Science & Technology Ltd, Yantai, Shandong 265100, China
| | - Jiancheng Song
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
- Yantai Jien Biological Science & Technology Ltd, Yantai, Shandong 265100, China
| | - Cheng Liu
- Crop Research Institute, Shandong Academy of Agriculture Sciences, Jinan, Shandong 250100, China
| | - Kaichang Liu
- Crop Research Institute, Shandong Academy of Agriculture Sciences, Jinan, Shandong 250100, China
| | - Pengtao Ma
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
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13
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Wu Y, Yu X, Zhang X, Yan L, Gao L, Hao Y, Wang X, Xue S, Qu Y, Hu T, Fu B, Zhou Y, Li S, Li H, Li C, Ma P, Xu H. Characterization of PmDGM Conferring Powdery Mildew Resistance in Chinese Wheat Landrace Duanganmang. PLANT DISEASE 2021; 105:3127-3133. [PMID: 33630690 DOI: 10.1094/pdis-12-20-2719-re] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wheat powdery mildew, caused by Blumeria graminis f. sp. tritici, is a devastating disease that threatens yield and quality. Host resistance is considered the most effective and preferred means to control this disease. Wheat landrace Duanganmang (DGM) showed high resistance or near immunity to Blumeria graminis f. sp. tritici mixture from Henan Province, China. DGM was crossed with highly susceptible Chinese wheat landrace Huixianhong (HXH) and cultivar 'Shimai 15' (SM15) to produce genetic populations. The resistance of DGM to Blumeria graminis f. sp. tritici isolate E09 was shown to be controlled by a single dominant Mendelian factor, tentatively designated PmDGM. Marker analysis and 55K single nucleotide polymorphism (SNP) array scanning showed that this gene was positioned in the Pm5 interval (2.4 cM or 1.61 Mb) flanked by Xhenu099 and Xmp1158 in the Chinese Spring reference genome. Homology-based cloning and sequence analysis demonstrated that DGM has the identical NLR gene (Pm5e) and RXL gene reported in Fuzhuang 30 (FZ30), conferring and modifying powdery mildew resistance, respectively. However, based on the different reaction patterns to the Blumeria graminis f. sp. tritici isolate B15 between DGM and FZ30, the authors speculate that DGM may have two tightly linked genes that could not be separated in the current mapping population, one of which is PmDGM and the other being Pm5e. Hence, this study provides a valuable resistance resource for improvement of powdery mildew resistance.
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Affiliation(s)
- Yanan Wu
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Xiaoting Yu
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Xu Zhang
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
| | - Lijuan Yan
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Li Gao
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Yiqing Hao
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Xingyu Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Shulin Xue
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Yunfeng Qu
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Tiezhu Hu
- College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - Bisheng Fu
- Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China
| | - Yun Zhou
- State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, Henan 475004, 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, Henan 475004, China
| | - Hongjie Li
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Chunxin Li
- Molecular Breeding Laboratory, Wheat Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002, China
| | - Pengtao Ma
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, 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, Henan 475004, China
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14
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Hasan N, Choudhary S, Naaz N, Sharma N, Laskar RA. Recent advancements in molecular marker-assisted selection and applications in plant breeding programmes. J Genet Eng Biotechnol 2021; 19:128. [PMID: 34448979 PMCID: PMC8397809 DOI: 10.1186/s43141-021-00231-1] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 08/17/2021] [Indexed: 11/28/2022]
Abstract
Background DNA markers improved the productivity and accuracy of classical plant breeding by means of marker-assisted selection (MAS). The enormous number of quantitative trait loci (QTLs) mapping read for different plant species have given a plenitude of molecular marker-gene associations. Main body of the abstract In this review, we have discussed the positive aspects of molecular marker-assisted selection and its precise applications in plant breeding programmes. Molecular marker-assisted selection has considerably shortened the time for new crop varieties to be brought to the market. To explore the information about DNA markers, many reviews have been published in the last few decades; all these reviews were intended by plant breeders to obtain information on molecular genetics. In this review, we intended to be a synopsis of recent developments of DNA markers and their application in plant breeding programmes and devoted to early breeders with little or no knowledge about the DNA markers. The progress made in molecular plant breeding, plant genetics, genomics selection, and editing of genome contributed to the comprehensive understanding of DNA markers and provides several proofs on the genetic diversity available in crop plants and greatly complemented plant breeding devices. Short conclusion MAS has revolutionized the process of plant breeding with acceleration and accuracy, which is continuously empowering plant breeders around the world.
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Affiliation(s)
- Nazarul Hasan
- Cytogenetic and Plant Breeding Lab, Department of Botany, Aligarh Muslim University, Aligarh, U.P, 202002, India.
| | - Sana Choudhary
- Cytogenetic and Plant Breeding Lab, Department of Botany, Aligarh Muslim University, Aligarh, U.P, 202002, India
| | - Neha Naaz
- Cytogenetic and Plant Breeding Lab, Department of Botany, Aligarh Muslim University, Aligarh, U.P, 202002, India
| | - Nidhi Sharma
- Cytogenetic and Plant Breeding Lab, Department of Botany, Aligarh Muslim University, Aligarh, U.P, 202002, India
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15
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Du X, Xu W, Peng C, Li C, Zhang Y, Hu L. Identification and validation of a novel locus, Qpm-3BL, for adult plant resistance to powdery mildew in wheat using multilocus GWAS. BMC PLANT BIOLOGY 2021; 21:357. [PMID: 34330216 PMCID: PMC8323325 DOI: 10.1186/s12870-021-03093-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 06/10/2021] [Indexed: 06/01/2023]
Abstract
BACKGROUND Powdery mildew (PM), one of the major diseases in wheat, severely damages yield and quality, and the most economical and effective way to address this issue is to breed disease-resistant cultivars. Accordingly, 371 landraces and 266 released cultivars in Henan Province were genotyped by a 660 K microarray and phenotyped for adult plant resistance (APR) to PM from 2017 to 2020, and these datasets were used to conduct multilocus genome-wide association studies (GWASs). RESULTS Thirty-six varieties showed stable APR in all the environments, and eleven quantitative trait nucleotides (QTNs) were found by multiple methods across multiple environments and best linear unbiased prediction (BLUP) values to be significantly associated with APR. Among these stable QTNs, four were previously reported, three were newly discovered in this study, and the others need to be further investigated. The major and newly discovered QTN, Qpm-3BL, was located at chr03BL_AX-109,052,670, while another newly discovered QTN, Qpm-1BL, was located between chr01BL_AX-108,771,002 and chr01BL_AX-110,117,322. Five and eight landraces were identified to be resistant based on Qpm-1BL (haplotype TC) and Qpm-3BL (allele T), respectively. To validate Qpm-3BL, a new kompetitive allele-specific PCR (KASP) marker was developed to scan 155 F2 individuals, and the average resistance score supported the value of Qpm-3BL in marker-assisted breeding. Near Qpm-3BL, PmBMYD was identified by KEGG, gene expression and comparative genomics analyses to be a candidate. Its resistance mechanism may involve gene tandem repeats. CONCLUSIONS This study reveals a previously unknown gene for PM resistance that is available for marker-assisted breeding.
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Affiliation(s)
- Xijun Du
- College of Agronomy, Northwest A&F University, Yangling, Shanxi, 712100, Xianyang, China
- Institute of Crop Molecular Breeding/National Engineering Laboratory of Wheat/Key Laboratory of Wheat Biology and Genetic Breeding in Central Huanghuai Area/Ministry of Agriculture/Henan Key Laboratory of Wheat Germplasm Resources Innovation and Improvement, Henan Academy of Agricultural Sciences, 450002, Zhengzhou, China
| | - Weigang Xu
- College of Agronomy, Northwest A&F University, Yangling, Shanxi, 712100, Xianyang, China.
- Institute of Crop Molecular Breeding/National Engineering Laboratory of Wheat/Key Laboratory of Wheat Biology and Genetic Breeding in Central Huanghuai Area/Ministry of Agriculture/Henan Key Laboratory of Wheat Germplasm Resources Innovation and Improvement, Henan Academy of Agricultural Sciences, 450002, Zhengzhou, China.
| | - Chaojun Peng
- Institute of Crop Molecular Breeding/National Engineering Laboratory of Wheat/Key Laboratory of Wheat Biology and Genetic Breeding in Central Huanghuai Area/Ministry of Agriculture/Henan Key Laboratory of Wheat Germplasm Resources Innovation and Improvement, Henan Academy of Agricultural Sciences, 450002, Zhengzhou, China
| | - Chunxin Li
- Institute of Crop Molecular Breeding/National Engineering Laboratory of Wheat/Key Laboratory of Wheat Biology and Genetic Breeding in Central Huanghuai Area/Ministry of Agriculture/Henan Key Laboratory of Wheat Germplasm Resources Innovation and Improvement, Henan Academy of Agricultural Sciences, 450002, Zhengzhou, China
| | - Yu Zhang
- Institute of Crop Molecular Breeding/National Engineering Laboratory of Wheat/Key Laboratory of Wheat Biology and Genetic Breeding in Central Huanghuai Area/Ministry of Agriculture/Henan Key Laboratory of Wheat Germplasm Resources Innovation and Improvement, Henan Academy of Agricultural Sciences, 450002, Zhengzhou, China
| | - Lin Hu
- Institute of Crop Molecular Breeding/National Engineering Laboratory of Wheat/Key Laboratory of Wheat Biology and Genetic Breeding in Central Huanghuai Area/Ministry of Agriculture/Henan Key Laboratory of Wheat Germplasm Resources Innovation and Improvement, Henan Academy of Agricultural Sciences, 450002, Zhengzhou, China
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16
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Nigro D, Fortunato S, Giove SL, Mazzucotelli E, Gadaleta A. Functional Validation of Glutamine synthetase and Glutamate synthase Genes in Durum Wheat near Isogenic Lines with QTL for High GPC. Int J Mol Sci 2020; 21:ijms21239253. [PMID: 33291583 PMCID: PMC7730160 DOI: 10.3390/ijms21239253] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 11/25/2020] [Accepted: 12/02/2020] [Indexed: 11/16/2022] Open
Abstract
Durum wheat (Triticum turgidum L. ssp. durum) is a minor crop grown on about 17 million hectares of land worldwide. Several grain characteristics determine semolina's high end-use quality, such as grain protein content (GPC) which is directly related to the final products' nutritional and technological values. GPC improvement could be pursued by considering a candidate gene approach. The glutamine synthetase (GS)/glutamate synthase (GOGAT) cycle represents a bottleneck in the first step of nitrogen assimilation. QTL for GPC have been located on all chromosomes, and several major ones have been reported on 2A and 2B chromosomes, where GS2 and Fd-GOGAT genes have been mapped. A useful and efficient method to validate a putative QTL is the constitution of near-isogenic lines (NILs) by using the marker found to be associated to that QTL. Here, we present the development of two distinct sets of heterogeneous inbred family (HIF)- based NILs segregating for GS2 and Fd-GOGAT genes obtained from heterozygous lines at those loci, as well as their genotypic and phenotypic characterizations. The results allow the validation of the previously identified GPC QTL on 2A and 2B chromosomes, along with the role of these key genes in GPC control.
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Affiliation(s)
- Domenica Nigro
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, 70126 Bari, Italy
- Correspondence: (D.N.); (A.G.); Tel.: +39-0805442997(D.N.); +39-0805442995 (A.G.)
| | | | - Stefania Lucia Giove
- Department of Agricultural and Environmental Science, University of Bari Aldo Moro, 70126 Bari, Italy;
| | | | - Agata Gadaleta
- Department of Agricultural and Environmental Science, University of Bari Aldo Moro, 70126 Bari, Italy;
- Correspondence: (D.N.); (A.G.); Tel.: +39-0805442997(D.N.); +39-0805442995 (A.G.)
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17
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Li S, Jia Z, Wang K, Du L, Li H, Lin Z, Ye X. Screening and functional characterization of candidate resistance genes to powdery mildew from Dasypyrum villosum#4 in a wheat line Pm97033. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:3067-3083. [PMID: 32685983 DOI: 10.1007/s00122-020-03655-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
KEY MESSAGE Three genes designated DvLox, Pm21#4, and Pm21#4-H identified in a wheat-Dasypyrum villosum#4 T6V#4S·6DL translocation line Pm97033 conferred wheat for powdery mildew resistance. Powdery mildew (PM) caused by Blumeria graminis f. sp. tritici (Bgt) is one of the most devastating diseases in wheat. To date, only a few genes conferring resistance to wheat PM are cloned. Dasypyrum villosum is a wild relative of wheat, which provides Pm21 conferring wheat immunity to PM. In this study, we obtained many differentially expressed genes (DEGs) from a wheat-D. villosum#4 T6V#4S·6DL translocation line Pm97033 using RNA-sequencing. Among them, 7 DEGs associated with pathogen resistance were up-regulated in front of Bgt infection. Virus-induced gene silencing and transformation assays demonstrated that two of them, DvLox and Pm21#4 encoding a lipoxygenase and a encoding coiled-coil/nucleotide-binding site/leucine-rich repeat resistance protein, conferred wheat PM resistance. The transgenic wheat plants expressing DvLox enhanced PM resistance, and the transgenic wheat plants expressing Pm21#4 showed PM immunity. The Pm21#4-silenced Pm97033 plants by the cluster regularly interspaced short palindromic repeats-associated endonuclease (CRISPR/Cas9) system were susceptible to PM. Thus, Pm21#4 is a key gene contributing PM immune resistance in Pm97033. Constitutively expression of Pm21#4-H, which is silenced in Pm97033 and D. villosum#4, endowed a PM-susceptible wheat variety Fielder with PM immune resistance.
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Affiliation(s)
- Shijin Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- National Key Facility of Crop Gene Resources and Genetic Improvement, Beijing, 100081, China
| | - Zimiao Jia
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- Key Laboratory of Ministry of Agriculture and Rural Affairs of China for Biology and Genetic Breeding of Triticeae Crops, Beijing, 100081, China
| | - Ke Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- National Key Facility of Crop Gene Resources and Genetic Improvement, Beijing, 100081, China
| | - Lipu Du
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Hongjie Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhishan Lin
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
- National Key Facility of Crop Gene Resources and Genetic Improvement, Beijing, 100081, China.
| | - Xingguo Ye
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
- Key Laboratory of Ministry of Agriculture and Rural Affairs of China for Biology and Genetic Breeding of Triticeae Crops, Beijing, 100081, China.
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18
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Xie J, Guo G, Wang Y, Hu T, Wang L, Li J, Qiu D, Li Y, Wu Q, Lu P, Chen Y, Dong L, Li M, Zhang H, Zhang P, Zhu K, Li B, Deal KR, Huo N, Zhang Y, Luo MC, Liu S, Gu YQ, Li H, Liu Z. A rare single nucleotide variant in Pm5e confers powdery mildew resistance in common wheat. THE NEW PHYTOLOGIST 2020; 228:1011-1026. [PMID: 32569398 DOI: 10.1111/nph.16762] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 06/02/2020] [Indexed: 05/18/2023]
Abstract
Powdery mildew poses severe threats to wheat production. The most sustainable way to control this disease is through planting resistant cultivars. We report the map-based cloning of the powdery mildew resistance allele Pm5e from a Chinese wheat landrace. We applied a two-step bulked segregant RNA sequencing (BSR-Seq) approach in developing tightly linked or co-segregating markers to Pm5e. The first BSR-Seq used phenotypically contrasting bulks of recombinant inbred lines (RILs) to identify Pm5e-linked markers. The second BSR-Seq utilized bulks of genetic recombinants screened from a fine-mapping population to precisely quantify the associated genomic variation in the mapping interval, and identified the Pm5e candidate genes. The function of Pm5e was validated by transgenic assay, loss-of-function mutants and haplotype association analysis. Pm5e encodes a nucleotide-binding domain leucine-rich-repeat-containing (NLR) protein. A rare nonsynonymous single nucleotide variant (SNV) within the C-terminal leucine rich repeat (LRR) domain is responsible for the gain of powdery mildew resistance function of Pm5e, an allele endemic to wheat landraces of Shaanxi province of China. Results from this study demonstrate the value of landraces in discovering useful genes for modern wheat breeding. The key SNV associated with powdery mildew resistance will be useful for marker-assisted selection of Pm5e in wheat breeding programs.
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Affiliation(s)
- 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
| | - 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
| | - Yong Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Tiezhu Hu
- College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, Henan, 4530003, China
| | - Lili Wang
- China Agricultural University, Beijing, 100193, China
| | - Jingting Li
- College of Chemistry and Environment Engineering, Pingdingshan University, Pingdingshan, 467000, China
| | - Dan Qiu
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yahui Li
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, 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
| | - 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
| | - 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
| | - 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
| | - 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
| | - 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
| | - 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
| | - 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
| | - Karin R Deal
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | - Naxin Huo
- USDA-ARS West Regional Research Center, Albany, CA, 94710, USA
| | - Yan Zhang
- China Agricultural University, Beijing, 100193, China
| | - Ming-Cheng Luo
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | - Sanzhen Liu
- Department of Plant Pathology, Kansas State University, Manhattan, KS, 66506, USA
| | - Yong Qiang Gu
- USDA-ARS West Regional Research Center, Albany, CA, 94710, USA
| | - 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
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19
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Mapping Powdery Mildew ( Blumeria graminis f. sp. tritici) Resistance in Wild and Cultivated Tetraploid Wheats. Int J Mol Sci 2020; 21:ijms21217910. [PMID: 33114422 PMCID: PMC7662567 DOI: 10.3390/ijms21217910] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 01/22/2023] Open
Abstract
Wheat is the most widely grown crop and represents the staple food for one third of the world’s population. Wheat is attacked by a large variety of pathogens and the use of resistant cultivars is an effective and environmentally safe strategy for controlling diseases and eliminating the use of fungicides. In this study, a collection of wild and cultivated tetraploid wheats (Triticum turgidum) were evaluated for seedling resistance (SR) and adult plant resistance (APR) to powdery mildew (Blumeria graminis) and genotyped with a 90K single nucleotide polymorphism (SNP) array to identify new sources of resistance genes. The genome-wide association mapping detected 18 quantitative trait loci (QTL) for APR and 8 QTL for SR, four of which were identical or at least closely linked to four QTL for APR. Thirteen candidate genes, containing nucleotide binding sites and leucine-rich repeats, were localized in the confidence intervals of the QTL-tagging SNPs. The marker IWB6155, associated to QPm.mgb-1AS, was located within the gene TRITD1Av1G004560 coding for a disease resistance protein. While most of the identified QTL were described previously, five QTL for APR (QPm.mgb-1AS, QPm.mgb-2BS, QPm.mgb-3BL.1, QPm.mgb-4BL, QPm.mgb-7BS.1) and three QTL for SR (QPm.mgb-3BL.3, QPm.mgb-5AL.2, QPm.mgb-7BS.2) were mapped on chromosome regions where no resistance gene was reported before. The novel QTL/genes can contribute to enriching the resistance sources available to breeders.
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20
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Luo W, Liu J, Ding P, Li C, Liu H, Mu Y, Tang H, Jiang Q, Liu Y, Chen G, Chen G, Jiang Y, Qi P, Zheng Y, Wei Y, Liu C, Lan X, Ma J. Transcriptome analysis of near-isogenic lines for glume hairiness of wheat. Gene 2020; 739:144517. [PMID: 32113949 DOI: 10.1016/j.gene.2020.144517] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 11/29/2022]
Abstract
Hairiness, which is a phenotypic trait common among land plants, primarily affects the stem, leaf, and floral organs. Plant hairiness is associated with complex functions. For example, glume hairiness in wheat is related to the resistance to biotic and abiotic stresses, and may also influence human health. In the present study, two pairs of near-isogenic lines (NILs) for glume hairiness, which were derived from a cross between a Tibetan semi-wild wheat accession (Triticum aestivum ssp. tibetanum Q1028) and a common wheat cultivar (T. aestivum 'Zhengmai 9023'), underwent a glume transcriptome analysis. We detected 27,935 novel genes, of which 18,027 were annotated. Additionally, 488 and 600 differentially expressed genes (DEGs) were detected in NIL1 and NIL2, respectively, with 37 DEGs detected in both NIL pairs. Moreover, 987 and 1584 single nucleotide polymorphisms (SNPs) were detected in NIL1 and NIL2, respectively, with 39 SNPs detected in both NIL pairs, of which most were located in the Hairy glume (Hg) gene region on chromosome arm 1AS. The annotation of the DEGs with gene ontology terms revealed that genes associated with hairiness in Arabidopsis and rice were similarly enriched. The possible functions of these genes related to glume hairiness were examined. The study results provide useful information for identifying candidate genes and the fine-mapping of Hg in the wheat genome.
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Affiliation(s)
- Wei Luo
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Jiajun Liu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Puyang Ding
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Cong Li
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Hang Liu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Yang Mu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Huaping Tang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Qiantao Jiang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Yaxi Liu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Guoyue Chen
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Guangdeng Chen
- College of Resources, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Yunfeng Jiang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Pengfei Qi
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Youliang Zheng
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Yuming Wei
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Chunji Liu
- Commonwealth Scientific and Industrial Research Organization Agriculture and Food, St Lucia, QLD 4067, Australia
| | - Xiujin Lan
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| | - Jian Ma
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
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21
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Jin Y, Xue F, Zhou Y, Duan X, Hu J, Li Y, Zhu H, Sun J. Fine-Mapping of the Powdery Mildew Resistance Gene mlxbd in the Common Wheat Landrace Xiaobaidong. PLANT DISEASE 2020; 104:1231-1238. [PMID: 32065563 DOI: 10.1094/pdis-07-19-1347-re] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Powdery mildew, which is caused by Blumeria graminis f. sp. tritici (Bgt), is a disease of wheat worldwide. Xiaobaidong is a Chinese wheat landrace, which still maintains good resistance against powdery mildew. To obtain more genetic markers closely linked to the powdery mildew resistance gene mlxbd and narrow the candidate region for its isolation, new simple sequence repeats and cross intron-spanning markers were designed based on the genome sequence of Triticum aestivum cultivar Chinese Spring chromosome 7BL. The flanking markers 7BLSSR49 and WGGC5746 were found to be tightly linked to mlxbd at genetic distances of 0.4 cM and 0.3 cM, respectively. The resistance locus was mapped to a 63.40 kb and 0.29 Mb region of the Chinese Spring genome and Zavitan genome, respectively. The linked markers of mlxbd could be used as diagnostic markers for mlxbd. The linked molecular markers and delineated genomic region in the sequenced Chinese Spring genome will assist the future map-based cloning of mlxbd.
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Affiliation(s)
- Yanlong Jin
- College of Agronomy, Shihezi University, The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi 832003, China
| | - Fei Xue
- College of Agronomy, Shihezi University, The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi 832003, China
| | - Yilin Zhou
- State Key Laboratory of Biology for Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xiayu Duan
- State Key Laboratory of Biology for Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jinghuang Hu
- College of Agronomy, Shihezi University, The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi 832003, China
| | - Yanjun Li
- College of Agronomy, Shihezi University, The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi 832003, China
| | - Huaguo Zhu
- College of Agronomy, Shihezi University, The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi 832003, China
| | - Jie Sun
- College of Agronomy, Shihezi University, The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi 832003, China
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22
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Li Y, Shi X, Hu J, Wu P, Qiu D, Qu Y, Xie J, Wu Q, Zhang H, Yang L, Liu H, Zhou Y, Liu Z, Li H. Identification of a Recessive Gene PmQ Conferring Resistance to Powdery Mildew in Wheat Landrace Qingxinmai Using BSR-Seq Analysis. PLANT DISEASE 2020; 104:743-751. [PMID: 31967507 DOI: 10.1094/pdis-08-19-1745-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: 05/07/2023]
Abstract
Wheat powdery mildew is caused by Blumeria graminis f. sp. tritici (Bgt), a biotrophic fungal species. It is very important to mine new powdery mildew (Pm) resistance genes for developing resistant wheat cultivars to reduce the deleterious effects of the disease. This study was carried out to characterize the Pm gene in Qingxinmai, a winter wheat landrace from Xinjiang, China. Qingxinmai is resistant to many Bgt isolates collected from different wheat fields in China. F1, F2, and F2:3 generations of the cross between Qingxinmai and powdery mildew susceptible line 041133 were developed. It was confirmed that a single recessive gene, PmQ, conferred the seedling resistance to a Bgt isolate in Qingxinmai. Bulked segregant analysis-RNA-Seq (BSR-Seq) was performed on the bulked homozygous resistant and susceptible F2:3 families, which detected 57 single nucleotide polymorphism (SNP) variants that were enriched in a 40 Mb genomic interval on chromosome arm 2BL. Based on the flanking sequences of the candidate SNPs extracted from the Chinese Spring reference genome, 485 simple sequence repeat (SSR) markers were designed. Six polymorphic SSR markers, together with nine markers that were anchored on chromosome arm 2BL, were used to construct a genetic linkage map for PmQ. This gene was placed in a 1.4 cM genetic interval between markers Xicsq405 and WGGBH913 corresponding to 4.9 Mb physical region in the Chinese Spring reference genome. PmQ differed from most of the other Pm genes identified on chromosome arm 2BL based on its position and/or origin. However, this gene and Pm63 from an Iranian common wheat landrace were located in a similar genomic region, so they may be allelic.
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Affiliation(s)
- Yahui Li
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaohan Shi
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jinghuang Hu
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Peipei Wu
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Dan Qiu
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yunfeng Qu
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jingzhong Xie
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Qiuhong Wu
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Hongjun Zhang
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Li Yang
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Hongwei Liu
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yang Zhou
- The National Engineering Laboratory of Crop Molecular Breeding, 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
| | - Hongjie Li
- The National Engineering Laboratory of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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23
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Positional cloning of PmCH1357 reveals the origin and allelic variation of the Pm2 gene for powdery mildew resistance in wheat. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.cj.2019.08.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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24
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Qie Y, Sheng Y, Xu H, Jin Y, Ma F, Li L, Li X, An D. Identification of a New Powdery Mildew Resistance Gene pmDHT at or Closely Linked to the Pm5 Locus in the Chinese Wheat Landrace Dahongtou. PLANT DISEASE 2019; 103:2645-2651. [PMID: 31453747 DOI: 10.1094/pdis-02-19-0401-re] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Chinese wheat landrace Dahongtou was resistant to 35 of 38 tested Chinese isolates of Blumeria graminis f. sp. tritici at the seedling stage. Genetic analysis of the F2 populations and their derived F2:3 families of crosses of Dahongtou with the susceptible varieties Mingxian 169 and Huixianhong indicated that the resistance of Dahongtou to B. graminis f. sp. tritici isolate E09 was conferred by a single recessive gene, tentatively designated as pmDHT. The gene was mapped to chromosome arm 7BL and flanked by markers Xwmc526/XBE443877 and Xgwm611/Xwmc511 at genetic distances of 0.8 and 0.3 cM, respectively. The chromosomal position of pmDHT was similar to the multi-allelic Pm5 locus on 7BL. Allelism tests with crosses of Dahongtou with Fuzhuang 30 (Pm5e) and Xiaobaidong (mlxbd) indicated that pmDHT was allelic to both Pm5e and mlxbd. However, pmDHT showed a different pattern of resistance to the 38 B. graminis f. sp. tritici isolates compared with wheat lines with Pm5a, Pm5b, Pm5e, mlxbd, and PmHYM and also differed from PmSGA. Thus, pmDHT was identified most likely as a new allele or at least a closely linked gene of the Pm5 locus. This gene can be transferred into susceptible wheat cultivars/lines and pyramided with other resistance genes through marker-assisted selection to improve powdery mildew resistance.
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Affiliation(s)
- Yanmin Qie
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China
| | - Yuan Sheng
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongxing Xu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China
| | - Yuli Jin
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feifei Ma
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China
| | - Lihui Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiuquan Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Diaoguo An
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China
- The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
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A search for 4 specific markers linked to Pm3 alleles for resistance to powdery mildew (Blumeria graminis) in rye (Secale cereale). BIOLOGICAL LETTERS 2019. [DOI: 10.2478/biolet-2019-0004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
To investigate powdery mildew resistance in rye (Secale cereale), 397 inbred lines of winter rye were tested for susceptibility to infection with Blumeria graminis f. sp. secalis. The 50 most tolerant lines and 50 most infected lines were chosen for comparison. They were next tested for the presence of 4 markers linked to 4 alleles for resistance to powdery mildew, identified earlier in common wheat (Triticum aestivum). We found Pm3a only in 3 susceptible genotypes of winter rye, although this marker is linked to the powdery mildew resistance gene in wheat. The other 3 markers linked to Blumeria graminis f. sp. secalis resistance genes (Pm3b, Pm3c, Pm3d) were found in neither resistant nor susceptible rye genotypes.
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Development of SNP, KASP, and SSR Markers by BSR-Seq Technology for Saturation of Genetic Linkage Map and Efficient Detection of Wheat Powdery Mildew Resistance Gene Pm61. Int J Mol Sci 2019; 20:ijms20030750. [PMID: 30754626 PMCID: PMC6387370 DOI: 10.3390/ijms20030750] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 01/29/2019] [Indexed: 11/17/2022] Open
Abstract
The gene Pm61 that confers powdery mildew resistance has been previously identified on chromosome arm 4AL in Chinese wheat landrace Xuxusanyuehuang (XXSYH). To facilitate the use of Pm61 in breeding practices, the bulked segregant analysis-RNA-Seq (BSR-Seq) analysis, in combination with the information on the Chinese Spring reference genome sequence, was performed in the F2:3 mapping population of XXSYH × Zhongzuo 9504. Two single nucleotide polymorphism (SNP), two Kompetitive Allele Specific PCR (KASP), and six simple sequence repeat (SSR) markers, together with previously identified polymorphic markers, saturated the genetic linkage map for Pm61, especially in the proximal side of the target gene that was short of gene-linked markers. In the newly established genetic linkage map, Pm61 was located in a 0.71 cM genetic interval and can be detected in a high throughput scale by the KASP markers Xicsk8 and Xicsk13 or by the standard PCR-based markers Xicscx497 and Xicsx538. The newly saturated genetic linkage map will be useful in molecular marker assisted-selection of Pm61 in breeding for disease resistant cultivar and in its map-based cloning.
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Geng S, Kong X, Song G, Jia M, Guan J, Wang F, Qin Z, Wu L, Lan X, Li A, Mao L. DNA methylation dynamics during the interaction of wheat progenitor Aegilops tauschii with the obligate biotrophic fungus Blumeria graminis f. sp. tritici. THE NEW PHYTOLOGIST 2019; 221:1023-1035. [PMID: 30256420 PMCID: PMC6586159 DOI: 10.1111/nph.15432] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 08/06/2018] [Indexed: 05/23/2023]
Abstract
DNA methylation is dynamically involved in plant immunity, but little information is known about its roles in plant interactions with biotrophic fungi, especially in temperate grasses such as wheat (Triticum aestivum). Using wheat diploid progenitor Aegilops tauschii accession AL8/78, the genome of which has been sequenced, we assessed the extent of DNA methylation in response to infection with Blumeria graminis f. sp. tritici (Bgt), which causes powdery mildew. Upon Bgt infection, ARGONAUTE4a (AGO4a) was significantly downregulated in A. tauschii, which was accompanied by a substantial reduction in AGO4a-sorted 24-nt siRNA levels, especially for genes near transposable elements (TAGs). Bisulfite sequencing revealed abundant differentially methylated regions (DMRs) with CHH hypomethylation. TAGs bearing CHH-hypomethylated DMRs were enriched for 'response to stress' functions, including receptor kinase, peroxidase, and pathogenesis-related genes. Virus-induced gene silencing (VIGS) of a DOMAINS REARRANGED METHYLASE 2 (DRM2) homolog enhanced plant resistance to Bgt. The effect of CHH hypomethylation was exemplified by the upregulation of a pathogenesis-related β-1,3-glucanse gene implicated in Bgt defense. These findings support the idea that dynamic DNA methylation represents a regulatory layer in the complex mechanism of plant immunity, which could be exploited to improve disease resistance in common wheat.
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Affiliation(s)
- Shuaifeng Geng
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Xingchen Kong
- Triticeae Research InstituteSichuan Agricultural UniversityChengduSichuan611130China
| | - Gaoyuan Song
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Meiling Jia
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Jiantao Guan
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Fang Wang
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Zhengrui Qin
- Department of AgronomyCollege of Agriculture and BiotechnologyZhejiang UniversityHangzhou310058China
| | - Liang Wu
- Department of AgronomyCollege of Agriculture and BiotechnologyZhejiang UniversityHangzhou310058China
| | - Xiujin Lan
- Triticeae Research InstituteSichuan Agricultural UniversityChengduSichuan611130China
| | - Aili Li
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Long Mao
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
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28
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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: 35] [Impact Index Per Article: 5.8] [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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Zou S, Wang H, Li Y, Kong Z, Tang D. The NB-LRR gene Pm60 confers powdery mildew resistance in wheat. THE NEW PHYTOLOGIST 2018; 218:298-309. [PMID: 29281751 DOI: 10.1111/nph.14964] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 11/20/2017] [Indexed: 05/18/2023]
Abstract
Powdery mildew is one of the most devastating diseases of wheat. To date, few powdery mildew resistance genes have been cloned from wheat due to the size and complexity of the wheat genome. Triticum urartu is the progenitor of the A genome of wheat and is an important source for powdery mildew resistance genes. Using molecular markers designed from scaffolds of the sequenced T. urartu accession and standard map-based cloning, a powdery mildew resistance locus was mapped to a 356-kb region, which contains two nucleotide-binding and leucine-rich repeat domain (NB-LRR) protein-encoding genes. Virus-induced gene silencing, single-cell transient expression, and stable transformation assays demonstrated that one of these two genes, designated Pm60, confers resistance to powdery mildew. Overexpression of full-length Pm60 and two allelic variants in Nicotiana benthamiana leaves induced hypersensitive cell death response, but expression of the coiled-coil domain alone was insufficient to induce hypersensitive response. Yeast two-hybrid, bimolecular fluorescence complementation and luciferase complementation imaging assays showed that Pm60 protein interacts with its neighboring NB-containing protein, suggesting that they might be functionally related. The identification and cloning of this novel wheat powdery mildew resistance gene will facilitate breeding for disease resistance in wheat.
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Affiliation(s)
- Shenghao Zou
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Huan Wang
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yiwen Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Zhaosheng Kong
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Dingzhong Tang
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
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Wu P, Xie J, Hu J, Qiu D, Liu Z, Li J, Li M, Zhang H, Yang L, Liu H, Zhou Y, Zhang Z, Li H. Development of Molecular Markers Linked to Powdery Mildew Resistance Gene Pm4b by Combining SNP Discovery from Transcriptome Sequencing Data with Bulked Segregant Analysis (BSR-Seq) in Wheat. FRONTIERS IN PLANT SCIENCE 2018; 9:95. [PMID: 29491869 PMCID: PMC5817070 DOI: 10.3389/fpls.2018.00095] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 01/17/2018] [Indexed: 05/21/2023]
Abstract
Powdery mildew resistance gene Pm4b, originating from Triticum persicum, is effective against the prevalent Blumeria graminis f. sp. tritici (Bgt) isolates from certain regions of wheat production in China. The lack of tightly linked molecular markers with the target gene prevents the precise identification of Pm4b during the application of molecular marker-assisted selection (MAS). The strategy that combines the RNA-Seq technique and the bulked segregant analysis (BSR-Seq) was applied in an F2:3 mapping population (237 families) derived from a pair of isogenic lines VPM1/7∗Bainong 3217 F4 (carrying Pm4b) and Bainong 3217 to develop more closely linked molecular markers. RNA-Seq analysis of the two phenotypically contrasting RNA bulks prepared from the representative F2:3 families generated 20,745,939 and 25,867,480 high-quality read pairs, and 82.8 and 80.2% of them were uniquely mapped to the wheat whole genome draft assembly for the resistant and susceptible RNA bulks, respectively. Variant calling identified 283,866 raw single nucleotide polymorphisms (SNPs) and InDels between the two bulks. The SNPs that were closely associated with the powdery mildew resistance were concentrated on chromosome 2AL. Among the 84 variants that were potentially associated with the disease resistance trait, 46 variants were enriched in an about 25 Mb region at the distal end of chromosome arm 2AL. Four Pm4b-linked SNP markers were developed from these variants. Based on the sequences of Chinese Spring where these polymorphic SNPs were located, 98 SSR primer pairs were designed to develop distal markers flanking the Pm4b gene. Three SSR markers, Xics13, Xics43, and Xics76, were incorporated in the new genetic linkage map, which located Pm4b in a 3.0 cM genetic interval spanning a 6.7 Mb physical genomic region. This region had a collinear relationship with Brachypodium distachyon chromosome 5, rice chromosome 4, and sorghum chromosome 6. Seven genes associated with disease resistance were predicted in this collinear genomic region, which included C2 domain protein, peroxidase activity protein, protein kinases of PKc_like super family, Mlo family protein, and catalytic domain of the serine/threonine kinases (STKc_IRAK like super family). The markers developed in the present study facilitate identification of Pm4b during its MAS practice.
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Affiliation(s)
- Peipei Wu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Jingzhong Xie
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Jinghuang Hu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Dan Qiu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhiyong Liu
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Jingting Li
- College of Chemistry and Environment Engineering, Pingdingshan University, Pingdingshan, China
| | - Miaomiao Li
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Hongjun Zhang
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Li Yang
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hongwei Liu
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yang Zhou
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhongjun Zhang
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Hongjie Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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31
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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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32
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Zhang Y, Bai Y, Wu G, Zou S, Chen Y, Gao C, Tang D. Simultaneous modification of three homoeologs of TaEDR1 by genome editing enhances powdery mildew resistance in wheat. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 91:714-724. [PMID: 28502081 DOI: 10.1111/tpj.13599] [Citation(s) in RCA: 195] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/23/2017] [Accepted: 05/03/2017] [Indexed: 05/18/2023]
Abstract
Wheat (Triticum aestivum L.) incurs significant yield losses from powdery mildew, a major fungal disease caused by Blumeria graminis f. sp. tritici (Bgt). enhanced disease resistance1 (EDR1) plays a negative role in the defense response against powdery mildew in Arabidopsis thaliana; however, the edr1 mutant does not show constitutively activated defense responses. This makes EDR1 an ideal target for approaches using new genome-editing tools to improve resistance to powdery mildew. We cloned TaEDR1 from hexaploid wheat and found high similarity among the three homoeologs of EDR1. Knock-down of TaEDR1 by virus-induced gene silencing or RNA interference enhanced resistance to powdery mildew, indicating that TaEDR1 negatively regulates powdery mildew resistance in wheat. We used CRISPR/Cas9 technology to generate Taedr1 wheat plants by simultaneous modification of the three homoeologs of wheat EDR1. No off-target mutations were detected in the Taedr1 mutant plants. The Taedr1 plants were resistant to powdery mildew and did not show mildew-induced cell death. Our study represents the successful generation of a potentially valuable trait using genome-editing technology in wheat and provides germplasm for disease resistance breeding.
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Affiliation(s)
- Yunwei Zhang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yang Bai
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Guangheng Wu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan, 354300, Fujian, China
| | - Shenghao Zou
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yongfang Chen
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Caixia Gao
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Dingzhong Tang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Development Biology, Chinese Academy of Sciences, Beijing, 100101, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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Xu H, Cao Y, Xu Y, Ma P, Ma F, Song L, Li L, An D. Marker-Assisted Development and Evaluation of Near-Isogenic Lines for Broad-Spectrum Powdery Mildew Resistance Gene Pm2b Introgressed into Different Genetic Backgrounds of Wheat. FRONTIERS IN PLANT SCIENCE 2017; 8:1322. [PMID: 28824664 PMCID: PMC5534469 DOI: 10.3389/fpls.2017.01322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Accepted: 07/13/2017] [Indexed: 05/08/2023]
Abstract
At present, most of released wheat cultivars or breeding lines in China are susceptible to powdery mildew (Pm) (caused by Blumeria graminis f. sp. tritici, Bgt), so there is an urgent need to rapidly transfer effective and broad-spectrum Pm resistance genes into elite cultivars/lines. Near-isogenic lines (NILs) with short target gene region are very important in molecular breeding and map-based cloning and can be developed by combining marker-assisted selection and conventional phenotypic identification. However, no Pm gene NILs were reported by using this method in the previous studies. A new broad-spectrum dominant resistance gene Pm2b, derived from the Chinese wheat breeding line KM2939, conferred high resistance to Pm at both the seedling and adult stages. In this study, with the aid of forward and background selection (FS and BS) using molecular markers, the Pm2b gene was introgressed into three elite susceptible commercial cultivars Shimai 15, Shixin 828, and Kenong 199 through the back-crossing procedure. With the appropriate backcrossing generations, selected population sizes and marker number for BS, the homozygous resistant BC3F2:3 NILs of Pm2b gene in the three genetic backgrounds with the highest recipient genome composition of about 99%, confirmed by simple sequence repeat markers and 660K single nucleotide polymorphic array, were developed and evaluated for the powdery mildew resistance and agronomic traits. The different resistance and similar or improved agronomic performance between Pm2b NILs and their corresponding recurrent parents indicated their potential value in the marker-assisted breeding of the Pm2b gene. Moreover, the development of four flanked diagnostic markers (CFD81, BWM25, BWM20, and BWM21) of the Pm2 gene can effectively assist the forward selection and accelerate the transfer and use of this resistance gene.
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Affiliation(s)
- Hongxing Xu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Yanwei Cao
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
- The College of Life Science, University of Chinese Academy of SciencesBeijing, China
| | - Yunfeng Xu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Pengtao Ma
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Feifei Ma
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Liping Song
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Lihui Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
| | - Diaoguo An
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
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Han Z, Qin Y, Deng Y, Kong F, Wang Z, Shen G, Wang J, Duan B, Li R. Expression profiles of a cytoplasmic male sterile line of Gossypium harknessii and its fertility restorer and maintainer lines revealed by RNA-Seq. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 116:106-115. [PMID: 28551417 DOI: 10.1016/j.plaphy.2017.04.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 04/13/2017] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
The Gossypium harknessii background cytoplasmic male sterility (CMS) system has been used in cotton hybrid breeding in China. However, the mechanism underlying pollen abortion and fertility restoration in CMS remains to be determined. In this study, we used RNA-seq to identify critical genes and pathways associated with CMS in G. harknessii based CMS lines (588A), the near isogenic restorer lines (588R), and maintainer lines (588B). We performed an assembly of 80,811,676 raw reads into 89,939 high-quality unigenes with an average length of 698 bp. Among these, 72.62% unigenes were annotated in public protein databases and were classified into functional clusters. In addition, we investigated the changes in expression of genes between 588A and 588B (588R); the RNA-seq data showed 742 differentially expressed genes (DEGs) between 588A and 588B and 748 DEGs between 588A and 588R. They were mainly down-regulated in 588A and most of them distributed in metabolic and biosynthesis of secondary metabolites pathways. Further analysis revealed 23 pollen development related genes were differentially expressed between 588A and 588B. Numerous genes associated with tapetum development were down-regulated in 588A, implicating tapetum dysplasia may be a key reason for pollen abortion in CMS lines. Also, among DEGs between 588A and 588R, we identified two PPR genes which were highly up-regulated in restorer line. This study may provide assistance for detailed molecular analysis and a better understanding of harknessii based CMS in cotton.
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Affiliation(s)
- Zongfu Han
- Cotton Research Centre, Shandong Academy of Agricultural Sciences, 250100 Jinan, PR China
| | - Yuxiang Qin
- School of Biological Science and Technology, University of Jinan, Jinan 250022, PR China
| | - Yongsheng Deng
- Cotton Research Centre, Shandong Academy of Agricultural Sciences, 250100 Jinan, PR China
| | - Fanjin Kong
- Cotton Research Centre, Shandong Academy of Agricultural Sciences, 250100 Jinan, PR China
| | - Zongwen Wang
- Cotton Research Centre, Shandong Academy of Agricultural Sciences, 250100 Jinan, PR China
| | - Guifang Shen
- Cotton Research Centre, Shandong Academy of Agricultural Sciences, 250100 Jinan, PR China
| | - Jinghui Wang
- Cotton Research Centre, Shandong Academy of Agricultural Sciences, 250100 Jinan, PR China
| | - Bing Duan
- Cotton Research Centre, Shandong Academy of Agricultural Sciences, 250100 Jinan, PR China
| | - Ruzhong Li
- Cotton Research Centre, Shandong Academy of Agricultural Sciences, 250100 Jinan, PR China.
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Molecular cytogenetic identification of a wheat–Thinopyrum ponticum translocation line resistant to powdery mildew. J Genet 2017; 96:165-169. [DOI: 10.1007/s12041-017-0754-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Yuan G, Wan Y, Li X, He B, Zhang Y, Xu B, Wang S, Xie W, Zhou X, Wu Q. Development of Near-Isogenic Lines in a Parthenogenetically Reproduced Thrips Species, Frankliniella occidentalis. Front Physiol 2017; 8:130. [PMID: 28348528 PMCID: PMC5346592 DOI: 10.3389/fphys.2017.00130] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 02/20/2017] [Indexed: 12/14/2022] Open
Abstract
Although near-isogenic lines (NILs) can standardize genetic backgrounds among individuals, it has never been applied in parthenogenetically reproduced animals. Here, through multiple rounds of backcrossing and spinosad screening, we generated spinosad resistant NILs in the western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), with a haplo-diploid reproduction system. The resultant F. occidentalis NIL-R strain maintained a resistance ratio over 30,000-fold, which was comparable to its parental resistant strain, Spin-R. More importantly, F. occidentalis NIL-R shared 98.90% genetic similarity with its susceptible parental strain Ivf03. By developing this toolset, we are able to segregate individual resistance and facilitate the mechanistic study of insecticide resistances in phloem-feeding arthropods, a group of devastating pest species reproducing sexually as well as asexually.
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Affiliation(s)
- Guangdi Yuan
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Beijing, China
| | - Yanran Wan
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Beijing, China
| | - Xiaoyu Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Beijing, China
| | - Bingqing He
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Beijing, China
| | - Youjun Zhang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Beijing, China
| | - Baoyun Xu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Beijing, China
| | - Shaoli Wang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Beijing, China
| | - Wen Xie
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Beijing, China
| | - Xuguo Zhou
- Department of Entomology, University of Kentucky Lexington, KY, USA
| | - Qingjun Wu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences Beijing, China
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Zhong S, Ma L, Fatima SA, Yang J, Chen W, Liu T, Hu Y, Li Q, Guo J, Zhang M, Lei L, Li X, Tang S, Luo P. Collinearity Analysis and High-Density Genetic Mapping of the Wheat Powdery Mildew Resistance Gene Pm40 in PI 672538. PLoS One 2016; 11:e0164815. [PMID: 27755575 PMCID: PMC5068701 DOI: 10.1371/journal.pone.0164815] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 10/01/2016] [Indexed: 11/18/2022] Open
Abstract
The wheat powdery mildew resistance gene Pm40, which is located on chromosomal arm 7BS, is effective against nearly all prevalent races of Blumeria graminis f. sp tritici (Bgt) in China and is carried by the common wheat germplasm PI 672538. A set of the F1, F2 and F2:3 populations from the cross of the resistant PI 672538 with the susceptible line L1034 were used to conduct genetic analysis of powdery mildew resistance and construct a high-density linkage map of the Pm40 gene. We constructed a high-density linkage genetic map with a total length of 6.18 cM and average spacing between markers of 0.48 cM.Pm40 is flanked by Xwmc335 and BF291338 at genetic distances of 0.58 cM and 0.26 cM, respectively, in deletion bin C-7BS-1-0.27. Comparative genomic analysis based on EST-STS markers established a high level of collinearity of the Pm40 genomic region with a 1.09-Mbp genomic region on Brachypodium chromosome 3, a 1.16-Mbp genomic region on rice chromosome 8, and a 1.62-Mbp genomic region on sorghum chromosome 7. We further anchored the Pm40 target intervals to the wheat genome sequence. A putative linear index of 85 wheat contigs containing 97 genes on 7BS was constructed. In total, 9 genes could be considered as candidates for the resistances to powdery mildew in the target genomic regions, which encoded proteins that were involved in the plant defense and response to pathogen attack. These results will facilitate the development of new markers for map-based cloning and marker-assisted selection of Pm40 in wheat breeding programs.
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Affiliation(s)
- Shengfu Zhong
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Lixia Ma
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Syeda Akash Fatima
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jiezhi Yang
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Wanquan Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Taiguo Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Yuting Hu
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Qing Li
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
- Department of Biology and Chemistry, Chongqing Industry and Trade Polytechnic Institute, Fuling District of Chongqing, China
| | - Jingwei Guo
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Min Zhang
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Li Lei
- Department of Agronomy and Plant Genetics, University of Minnesota, Saint Paul, MN, United States of America
| | - Xin Li
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Shengwen Tang
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Peigao Luo
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, Sichuan, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
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Lavaud C, Lesné A, Piriou C, Le Roy G, Boutet G, Moussart A, Poncet C, Delourme R, Baranger A, Pilet-Nayel ML. Validation of QTL for resistance to Aphanomyces euteiches in different pea genetic backgrounds using near-isogenic lines. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2015; 128:2273-88. [PMID: 26215183 DOI: 10.1007/s00122-015-2583-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 07/10/2015] [Indexed: 05/07/2023]
Abstract
KEY MESSAGE Marker-assisted backcrossing was used to generate pea NILs carrying individual or combined resistance alleles at main Aphanomyces resistance QTL. The effects of several QTL were successfully validated depending on genetic backgrounds. Quantitative trait loci (QTL) validation is an important and often overlooked step before subsequent research in QTL cloning or marker-assisted breeding for disease resistance in plants. Validation of QTL controlling partial resistance to Aphanomyces root rot, one of the most damaging diseases of pea worldwide, is of major interest for the future development of resistant varieties. The aim of this study was to validate, in different genetic backgrounds, the effects of various resistance alleles at seven main resistance QTL recently identified. Five backcross-assisted selection programs were developed. In each, resistance alleles at one to three of the seven main Aphanomyces resistance QTL were transferred into three genetic backgrounds, including two agronomically important spring (Eden) and winter (Isard) pea cultivars. The subsequent near-isogenic lines (NILs) were evaluated for resistance to two reference strains of the main A. euteiches pathotypes under controlled conditions. The NILs carrying resistance alleles at the major-effect QTL Ae-Ps4.5 and Ae-Ps7.6, either individually or in combination with resistance alleles at other QTL, showed significantly reduced disease severity compared to NILs without resistance alleles. Resistance alleles at some minor-effect QTL, especially Ae-Ps2.2 and Ae-Ps5.1, were also validated for their individual or combined effects on resistance. QTL × genetic background interactions were observed, mainly for QTL Ae-Ps7.6, the effect of which increased in the winter cultivar Isard. The pea NILs are a novel and valuable resource for further understanding the mechanisms underlying QTL and their integration in breeding programs.
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Affiliation(s)
- C Lavaud
- INRA, UMR IGEPP 1349, Institut de Génétique, Environnement et Protection des Plantes, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
| | - A Lesné
- INRA, UMR IGEPP 1349, Institut de Génétique, Environnement et Protection des Plantes, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
- Terres Univia, 11 rue de Monceau, CS 60003, 75378, Paris Cedex 08, France
| | - C Piriou
- INRA, UMR IGEPP 1349, Institut de Génétique, Environnement et Protection des Plantes, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
- PISOM, UMT INRA/Terres Inovia, UMR IGEPP 1349, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
| | - G Le Roy
- INRA, UMR IGEPP 1349, Institut de Génétique, Environnement et Protection des Plantes, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
- PISOM, UMT INRA/Terres Inovia, UMR IGEPP 1349, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
| | - G Boutet
- INRA, UMR IGEPP 1349, Institut de Génétique, Environnement et Protection des Plantes, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
- PISOM, UMT INRA/Terres Inovia, UMR IGEPP 1349, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
| | - A Moussart
- PISOM, UMT INRA/Terres Inovia, UMR IGEPP 1349, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
- Terres Inovia, 11 rue de Monceau, CS 60003, 75378, Paris Cedex 08, France
| | - C Poncet
- INRA, UMR GDEC 1095, Génétique, Diversité, Ecophysiologie des Céréales, 5 chemin de Beaulieu, 63039, Clermont-Ferrand Cedex 2, France
| | - R Delourme
- INRA, UMR IGEPP 1349, Institut de Génétique, Environnement et Protection des Plantes, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
| | - A Baranger
- INRA, UMR IGEPP 1349, Institut de Génétique, Environnement et Protection des Plantes, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
- PISOM, UMT INRA/Terres Inovia, UMR IGEPP 1349, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France
| | - M-L Pilet-Nayel
- INRA, UMR IGEPP 1349, Institut de Génétique, Environnement et Protection des Plantes, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France.
- PISOM, UMT INRA/Terres Inovia, UMR IGEPP 1349, Domaine de la Motte au Vicomte, BP 35327, 35653, Le Rheu Cedex, France.
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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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Wang Z, Li H, Zhang D, Guo L, Chen J, Chen Y, Wu Q, Xie J, Zhang Y, Sun Q, Dvorak J, Luo MC, Liu Z. Genetic and physical mapping of powdery mildew resistance gene MlHLT in Chinese wheat landrace Hulutou. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2015; 128:365-73. [PMID: 25471672 DOI: 10.1007/s00122-014-2436-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 11/21/2014] [Indexed: 05/21/2023]
Abstract
A powdery mildew resistance gene MlHLT derived from a Chinese wheat landrace maps within a 3.6 centimorgan (cM) genetic interval spanning a 13.4 megabase (Mb) physical genomic region on chromosome 1DS. Wheat powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt) is a devastating disease that can cause severe yield losses. Chinese wheat landrace Hulutou confers nearly immune resistance against prevailing Bgt isolate E09 in Beijing. Genetic analysis indicate that the powdery mildew resistance of Hulutou is controlled by a single dominant gene, provisionally designated MlHLT. Bulked segregant analysis(BSA) and simple sequence repeat (SSR) mapping showed that MlHLT is located on chromosome arm 1DS between markers Xgwm337 and Xcfd83/Xcfd72. By applying comparative genomics analysis, collinearity genomic regions of the MlHLT locus on Aegilops tauschii chromosome 1DS were identified in Brachypodium distachyon chromosome 2, rice chromosome 5 and sorghum chromosome 9, respectively. Three new polymorphic markers were developed using the draft genome sequences and the extended single nucleotide polymorphism (SNP) marker sequences of Ae. tauschii accession AL8/78, as well as the Triticum aestivum cv. Chinese Spring 454 contig sequences and the International Wheat Genome Sequencing Consortium (IWGSC) survey sequences. MlHLT mapped into a 3.6 cM genetic interval spanning 13.4 Mb physical genomic region containing seven contigs (ctg220, ctg4623, ctg1063, ctg5929, ctg3163, ctg699 and ctg1065) on 1DS that has synteny with a 369.8 kb genomic region in Brachypodium, a 380.8 kb genomic region in rice and a 298.4 kb genomic region in sorghum. The genetic and physical maps of MlHLT provide framework for map-based cloning and marker-assisted selection (MAS) of the powdery mildew resistance gene MlHLT in Hulutou.
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Affiliation(s)
- Zhenzhong Wang
- Department of Plant Genetics and Breeding/State Key Laboratory for Agrobiotechnology, China Agricultural University, Beijing, 100193, China
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Yaniv E, Raats D, Ronin Y, Korol AB, Grama A, Bariana H, Dubcovsky J, Schulman AH. Evaluation of marker-assisted selection for the stripe rust resistance gene Yr15, introgressed from wild emmer wheat. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2015; 35:43. [PMID: 27818611 PMCID: PMC5091809 DOI: 10.1007/s11032-015-0238-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Stripe rust disease is caused by the fungus Puccinia striiformis f. sp. tritici and severely threatens wheat worldwide, repeatedly breaking resistance conferred by resistance genes and evolving more aggressive strains. Wild emmer wheat, Triticum dicoccoides, is an important source for novel stripe rust resistance (Yr) genes. Yr15, a major gene located on chromosome 1BS of T. dicoccoides, was previously reported to confer resistance to a broad spectrum of stripe rust isolates, at both seedling and adult plant stages. Introgressions of Yr15 into cultivated T. aestivum bread wheat and T. durum pasta wheat that began in the 1980s are widely used. In the present study, we aimed to validate SSR markers from the Yr15 region as efficient tools for marker-assisted selection (MAS) for introgression of Yr15 into wheat and to compare the outcome of gene introgression by MAS and by conventional phenotypic selection. Our findings establish the validity of MAS for introgression of Yr15 into wheat. We show that the size of the introgressed segment, defined by flanking markers, varies for both phenotypic selection and MAS. The genetic distance of the MAS marker from Yr15 and the number of backcross steps were the main factors affecting the length of the introgressed donor segments. Markers Xbarc8 and Xgwm493, which are the nearest flanking markers studied, were consistent and polymorphic in all 34 introgressions reported here and are therefore the most recommended markers for the introgression of Yr15 into wheat cultivars. Introgression directed by markers, rather than by phenotype, will facilitate simultaneous selection for multiple stripe rust resistant genes and will help to avoid escapees during the selection process.
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Affiliation(s)
- Elitsur Yaniv
- Plant Genomics and Disease Resistance Laboratory, Department of Evolutionary and Environmental Biology, Institute of Evolution, Faculty of Natural Sciences, University of Haifa, Haifa, Israel
| | - Dina Raats
- Plant Genomics and Disease Resistance Laboratory, Department of Evolutionary and Environmental Biology, Institute of Evolution, Faculty of Natural Sciences, University of Haifa, Haifa, Israel
| | - Yefim Ronin
- Plant Genomics and Disease Resistance Laboratory, Department of Evolutionary and Environmental Biology, Institute of Evolution, Faculty of Natural Sciences, University of Haifa, Haifa, Israel
| | - Abraham B Korol
- Plant Genomics and Disease Resistance Laboratory, Department of Evolutionary and Environmental Biology, Institute of Evolution, Faculty of Natural Sciences, University of Haifa, Haifa, Israel
| | - Adriana Grama
- Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
| | - Harbans Bariana
- Department of Plant and Food Sciences, University of Sydney, Sydney, Australia
| | - Jorge Dubcovsky
- Department of Plant Sciences, University of California, Davis, CA, USA
| | - Alan H Schulman
- LUKE/BI Plant Genomics Lab, Institute of Biotechnology, Viikki Biocenter, University of Helsinki, P.O. Box 65, Helsinki, Finland
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Zhan H, Li G, Zhang X, Li X, Guo H, Gong W, Jia J, Qiao L, Ren Y, Yang Z, Chang Z. Chromosomal location and comparative genomics analysis of powdery mildew resistance gene Pm51 in a putative wheat-Thinopyrum ponticum introgression line. PLoS One 2014; 9:e113455. [PMID: 25415194 PMCID: PMC4240596 DOI: 10.1371/journal.pone.0113455] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 10/24/2014] [Indexed: 11/18/2022] Open
Abstract
Powdery mildew (PM) is a very destructive disease of wheat (Triticum aestivum L.). Wheat-Thinopyrum ponticum introgression line CH7086 was shown to possess powdery mildew resistance possibly originating from Th. ponticum. Genomic in situ hybridization and molecular characterization of the alien introgression failed to identify alien chromatin. To study the genetics of resistance, CH7086 was crossed with susceptible genotypes. Segregation in F2 populations and F2:3 lines tested with Chinese Bgt race E09 under controlled conditions indicated that CH7086 carries a single dominant gene for powdery mildew resistance. Fourteen SSR and EST-PCR markers linked with the locus were identified. The genetic distances between the locus and the two flanking markers were 1.5 and 3.2 cM, respectively. Based on the locations of the markers by nullisomic-tetrasomic and deletion lines of 'Chinese Spring', the resistance gene was located in deletion bin 2BL-0.89-1.00. Conserved orthologous marker analysis indicated that the genomic region flanking the resistance gene has a high level of collinearity to that of rice chromosome 4 and Brachypodium chromosome 5. Both resistance specificities and tests of allelism suggested the resistance gene in CH7086 was different from previously reported powdery mildew resistance genes on 2BL, and the gene was provisionally designated PmCH86. Molecular analysis of PmCH86 compared with other genes for resistance to Bgt in the 2BL-0.89-1.00 region suggested that PmCH86 may be a new PM resistance gene, and it was therefore designated as Pm51. The closely linked flanking markers could be useful in exploiting this putative wheat-Thinopyrum translocation line for rapid transfer of Pm51 to wheat breeding programs.
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Affiliation(s)
- Haixian Zhan
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
- Crop Science Institute, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi, China
| | - Guangrong Li
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Xiaojun Zhang
- Crop Science Institute, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi, China
| | - Xin Li
- Crop Science Institute, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi, China
| | - Huijuan Guo
- Crop Science Institute, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi, China
| | - Wenping Gong
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Juqing Jia
- College of agronomy, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Linyi Qiao
- Crop Science Institute, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi, China
| | - Yongkang Ren
- Crop Science Institute, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi, China
| | - Zujun Yang
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Zhijian Chang
- Crop Science Institute, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi, China
- Key Lab of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Taiyuan, Shanxi, China
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Zhang X, Yuan Y, Wei Z, Guo X, Guo Y, Zhang S, Zhao J, Zhang G, Song X, Sun X. Molecular mapping and validation of a major QTL conferring resistance to a defoliating isolate of verticillium wilt in cotton (Gossypium hirsutum L.). PLoS One 2014; 9:e96226. [PMID: 24781706 PMCID: PMC4004561 DOI: 10.1371/journal.pone.0096226] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Accepted: 04/04/2014] [Indexed: 11/19/2022] Open
Abstract
Verticillium wilt (VW) caused by Verticillium dahliae Kleb is one of the most destructive diseases of cotton. Development and use of a VW resistant variety is the most practical and effective way to manage this disease. Identification of highly resistant genes/QTL and the underlining genetic architecture is a prerequisite for developing a VW resistant variety. A major QTL qVW-c6-1 conferring resistance to the defoliating isolate V991 was identified on chromosome 6 in LHB22×JM11 F2∶3 population inoculated and grown in a greenhouse. This QTL was further validated in the LHB22×NNG F2∶3 population that was evaluated in an artificial disease nursery of V991 for two years and in its subsequent F4 population grown in a field severely infested by V991. The allele conferring resistance within the QTL qVW-c6-1 region originated from parent LHB22 and could explain 23.1-27.1% of phenotypic variation. Another resistance QTL qVW-c21-1 originated from the susceptible parent JM11 was mapped on chromosome 21, explaining 14.44% of phenotypic variation. The resistance QTL reported herein provides a useful tool for breeding a cotton variety with enhanced resistance to VW.
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Affiliation(s)
- Xingju Zhang
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultural University, Taian, Shandong, China
| | - Yanchao Yuan
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultural University, Taian, Shandong, China
| | - Ze Wei
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultural University, Taian, Shandong, China
| | - Xian Guo
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultural University, Taian, Shandong, China
| | - Yuping Guo
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultural University, Taian, Shandong, China
| | - Suqing Zhang
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultural University, Taian, Shandong, China
| | - Junsheng Zhao
- Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - Guihua Zhang
- Heze Academy of Agricultual Sciences, Heze, Shandong, China
| | - Xianliang Song
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultural University, Taian, Shandong, China
| | - Xuezhen Sun
- State Key Laboratory of Crop Biology/Agronomy College, Shandong Agricultural University, Taian, Shandong, China
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Geng S, Li A, Tang L, Yin L, Wu L, Lei C, Guo X, Zhang X, Jiang G, Zhai W, Wei Y, Zheng Y, Lan X, Mao L. TaCPK2-A, a calcium-dependent protein kinase gene that is required for wheat powdery mildew resistance enhances bacterial blight resistance in transgenic rice. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:3125-36. [PMID: 23918959 PMCID: PMC3733141 DOI: 10.1093/jxb/ert146] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Calcium-dependent protein kinases (CPKs) are important Ca2+ signalling components involved in complex immune and stress signalling networks; but the knowledge of CPK gene functions in the hexaploid wheat is limited. Previously, TaCPK2 was shown to be inducible by powdery mildew (Blumeria graminis tritici, Bgt) infection in wheat. Here, its functions in disease resistance are characterized further. This study shows the presence of defence-response and cold-response cis-elements on the promoters of the A subgenome homoeologue (TaCPK2-A) and D subgenome homoeologue (TaCPK2-D), respectively. Their expression patterns were then confirmed by quantitative real-time PCR (qRT-PCR) using genome-specific primers, where TaCPK2-A was induced by Bgt treatment while TaCPK2-D mainly responded to cold treatment. Downregulation of TaCPK2-A by virus-induced gene silencing (VIGS) causes loss of resistance to Bgt in resistant wheat lines, indicating that TaCPK2-A is required for powdery mildew resistance. Furthermore, overexpression of TaCPK2-A in rice enhanced bacterial blight (Xanthomonas oryzae pv. oryzae, Xoo) resistance. qRT-PCR analysis showed that overexpression of TaCPK2-A in rice promoted the expression of OsWRKY45-1, a transcription factor involved in both fungal and bacterial resistance by regulating jasmonic acid and salicylic acid signalling genes. The opposite effect was found in wheat TaCPK2-A VIGS plants, where the homologue of OsWRKY45-1 was significantly repressed. These data suggest that modulation of WRKY45-1 and associated defence-response genes by CPK2 genes may be the common mechanism for multiple disease resistance in grass species, which may have undergone subfunctionalization in promoters before the formation of hexaploid wheat.
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Affiliation(s)
- Shuaifeng Geng
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan, 611130, PR China
- National Key Facility of Crop Gene Resources and Genetic Improvement and Institute of Crop Sciences, MOA Key Laboratory for Germplasm and Biotechnology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China
- * These authors contributed equally to this work
| | - Aili Li
- National Key Facility of Crop Gene Resources and Genetic Improvement and Institute of Crop Sciences, MOA Key Laboratory for Germplasm and Biotechnology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China
- * These authors contributed equally to this work
| | - Lichuan Tang
- National Key Facility of Crop Gene Resources and Genetic Improvement and Institute of Crop Sciences, MOA Key Laboratory for Germplasm and Biotechnology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China
- * These authors contributed equally to this work
| | - Lingjie Yin
- National Key Facility of Crop Gene Resources and Genetic Improvement and Institute of Crop Sciences, MOA Key Laboratory for Germplasm and Biotechnology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China
| | - Liang Wu
- National Key Facility of Crop Gene Resources and Genetic Improvement and Institute of Crop Sciences, MOA Key Laboratory for Germplasm and Biotechnology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China
| | - Cailin Lei
- National Key Facility of Crop Gene Resources and Genetic Improvement and Institute of Crop Sciences, MOA Key Laboratory for Germplasm and Biotechnology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China
| | - Xiuping Guo
- National Key Facility of Crop Gene Resources and Genetic Improvement and Institute of Crop Sciences, MOA Key Laboratory for Germplasm and Biotechnology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China
| | - Xin Zhang
- National Key Facility of Crop Gene Resources and Genetic Improvement and Institute of Crop Sciences, MOA Key Laboratory for Germplasm and Biotechnology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China
| | - Guanghuai Jiang
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Wenxue Zhai
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Yuming Wei
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan, 611130, PR China
| | - Youliang Zheng
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan, 611130, PR China
| | - Xiujin Lan
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan, 611130, PR China
- To whom correspondence should be addressed. E-mail: ;
| | - Long Mao
- National Key Facility of Crop Gene Resources and Genetic Improvement and Institute of Crop Sciences, MOA Key Laboratory for Germplasm and Biotechnology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China
- To whom correspondence should be addressed. E-mail: ;
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Liu C, Ma N, Wang PY, Fu N, Shen HL. Transcriptome sequencing and de novo analysis of a cytoplasmic male sterile line and its near-isogenic restorer line in chili pepper (Capsicum annuum L.). PLoS One 2013; 8:e65209. [PMID: 23750245 PMCID: PMC3672106 DOI: 10.1371/journal.pone.0065209] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Accepted: 04/23/2013] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND The use of cytoplasmic male sterility (CMS) in F1 hybrid seed production of chili pepper is increasingly popular. However, the molecular mechanisms of cytoplasmic male sterility and fertility restoration remain poorly understood due to limited transcriptomic and genomic data. Therefore, we analyzed the difference between a CMS line 121A and its near-isogenic restorer line 121C in transcriptome level using next generation sequencing technology (NGS), aiming to find out critical genes and pathways associated with the male sterility. RESULTS We generated approximately 53 million sequencing reads and assembled de novo, yielding 85,144 high quality unigenes with an average length of 643 bp. Among these unigenes, 27,191 were identified as putative homologs of annotated sequences in the public protein databases, 4,326 and 7,061 unigenes were found to be highly abundant in lines 121A and 121C, respectively. Many of the differentially expressed unigenes represent a set of potential candidate genes associated with the formation or abortion of pollen. CONCLUSIONS Our study profiled anther transcriptomes of a chili pepper CMS line and its restorer line. The results shed the lights on the occurrence and recovery of the disturbances in nuclear-mitochondrial interaction and provide clues for further investigations.
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Affiliation(s)
- Chen Liu
- China Agricultural University, Beijing, China
| | - Ning Ma
- China Agricultural University, Beijing, China
| | | | - Nan Fu
- China Agricultural University, Beijing, China
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Xiao M, Song F, Jiao J, Wang X, Xu H, Li H. Identification of the gene Pm47 on chromosome 7BS conferring resistance to powdery mildew in the Chinese wheat landrace Hongyanglazi. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2013; 126:1397-403. [PMID: 23429903 DOI: 10.1007/s00122-013-2060-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Accepted: 02/08/2013] [Indexed: 05/18/2023]
Abstract
Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is an important disease that causes substantial yield losses in wheat (Triticum aestivum) in China and other parts of the world. This foliar disease can be effectively managed by host resistance. The Chinese landrace Hongyanglazi from Shaanxi province is highly resistant to many Bgt isolates at the seedling stage. Genetic analysis using an F2:3 population derived from a cross between Hongyanglazi and susceptible cultivar Zhongzuo 9504 indicated that Hongyanglazi carried a single recessive gene (tentatively designated PmHYLZ) conferring its resistance to Bgt isolate E09. PmHYLZ was flanked by EST marker BE606897 and microsatellite marker Xgwm46 on chromosome 7BS at genetic distances of 1.7 and 3.6 cM, respectively. This gene differed from Pm40, also located on 7BS, by origin, linked markers, and reactions to 13 Bgt isolates. Based on these findings, PmHYLZ was permanently designated as Pm47.
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Affiliation(s)
- Minggang Xiao
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Laikova LI, Belan IA, Badaeva ED, Rosseeva LP, Shepelev SS, Shumny VK, Pershina LA. Development and study of spring bread wheat variety Pamyati Maystrenko with introgression of genetic material from synthetic hexaploid Triticum timopheevii Zhuk. × Aegilops tauschii Coss. RUSS J GENET+ 2013. [DOI: 10.1134/s1022795413010067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Xue F, Wang C, Li C, Duan X, Zhou Y, Zhao N, Wang Y, Ji W. Molecular mapping of a powdery mildew resistance gene in common wheat landrace Baihulu and its allelism with Pm24. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2012; 125:1425-32. [PMID: 22772588 DOI: 10.1007/s00122-012-1923-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 06/11/2012] [Indexed: 05/21/2023]
Abstract
Powdery mildew is one of the most devastating diseases of wheat in areas with cool and maritime climates. Chinese wheat landrace Baihulu confers a high level of resistance against a wide range of Blumeria graminis DC f. sp. tritici (Bgt) races, especially those currently prevailing in Shaanxi. The objectives of this study were to determine the chromosome bin location of the mlbhl gene from Baihulu and its allelism with Pm24. To investigate the inheritance of powdery mildew resistance and detect adjacent molecular markers, we constructed a segregating population of 301 F(2) plants and corresponding F(2:3) families derived from Baihulu/Shaanyou 225. Genetic analysis revealed that a single dominant gene was responsible for seedling stage powdery mildew resistance in Baihulu. A genetic map comprising Xgwm106, Xgwm337, Xgwm1675, Xgwm603, Xgwm789, Xbarc229, Xgpw4503, Xcfd72, Xcfd83, Xcfd59, Xcfd19, and mlbhl spanned 28.2 cM on chromosome 1D. Xgwm603/Xgwm789 and Xbarc229 were flanking markers tightly linked to mlbhl at genetic distances of 1.5 and 1.0 cM, respectively. The mlbhl locus was located in chromosome bin 1DS 0.59-1.00 delimited by the SSR markers Xgwm337 and Xbarc229. When tested with a differential array of 23 Bgt isolates Baihulu displayed a response pattern that was clearly distinguishable from that of Chiyacao and varieties or lines possessing documented Pm genes. Allelism analysis indicated that mlbhl is a new gene, either allelic or closely linked with Pm24. The new gene was designated Pm24b.
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Affiliation(s)
- Fei Xue
- College of Agronomy, State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A & F University, Yangling, Shaanxi, 712100, China
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Gao H, Zhu F, Jiang Y, Wu J, Yan W, Zhang Q, Jacobi A, Cai S. Genetic analysis and molecular mapping of a new powdery mildew resistant gene Pm46 in common wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2012; 125:967-73. [PMID: 22660629 DOI: 10.1007/s00122-012-1886-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 04/27/2012] [Indexed: 05/11/2023]
Abstract
Powdery mildew (PM), caused by Blumeria graminis f. sp. tritici (Bgt), has become a serious disease and caused severe yield losses in the wheat production worldwide. Resistance gene(s) in wheat cultivars can be quickly overcome by newly evolved pathogen races when these genes are employed for long time or in a large area. It is urgent to search for new sources of resistance to be used in wheat breeding. Tabasco is a German resistant cultivar and a new source of resistance gene(s) to PM. An F(2) population was developed from a cross between Tabasco and a Chinese susceptible cultivar Ningnuo 1. Infection types in 472 F(2) plants and 436 F(2-3) families were evaluated by inoculating plants with isolate Bgt19. Results showed that a single dominant gene, designed Pm46, controlled powdery mildew resistance in Tabasco. This gene was located to the short arm of chromosome 5D (5DS) and flanked by simple sequence repeat markers Xgwm205 and Xcfd81 at 18.9 cM apart. Because another resistance gene Pm2 was also located on 5DS, 15 Bgt isolates were used to inoculate Tabasco and Ulka/8*Cc (Pm2 carrier). The results showed that Tabasco was highly resistant to all of the 15 isolates tested, while Ulka/8*Cc was susceptible to 4 of the isolates, suggesting that Tabasco may carry resistant gene(s) different from Pm2 gene in Ulka/8*Cc. To test the allelism between Pm46 and Pm2, an F(2) population between Tabasco and Ulka/8*Cc was developed. Isolate Bgt2, avirulent to both parents, was used to evaluate the F(2) population and two susceptible plants were identified from 536 progenies with F(2) plants. This result indicated that Pm46 is not allelic to Pm2. Therefore, Pm46 is a new gene for PM resistance identified in this study.
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Affiliation(s)
- Haidong Gao
- Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
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Liu Z, Zhu J, Cui Y, Liang Y, Wu H, Song W, Liu Q, Yang T, Sun Q, Liu Z. Identification and comparative mapping of a powdery mildew resistance gene derived from wild emmer (Triticum turgidum var. dicoccoides) on chromosome 2BS. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2012; 124:1041-9. [PMID: 22170431 DOI: 10.1007/s00122-011-1767-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 12/04/2011] [Indexed: 05/18/2023]
Abstract
Powdery mildew, caused by Blumeria graminis f. sp. tritici, is an important foliar disease of wheat worldwide. Wild emmer (Triticum turgidum var. dicoccoides) is a valuable genetic resource for improving disease resistance in common wheat. A powdery mildew resistance gene conferring resistance to B. graminis f. sp. tritici isolate E09 at the seedling and adult stages was identified in wild emmer accession IW170 introduced from Israel. An incomplete dominant gene, temporarily designated MlIW170, was responsible for the resistance. Through molecular marker and bulked segregant analyses of an F(2) population and F(3) families derived from a cross between susceptible durum wheat line 81086A and IW170, MlIW170 was located in the distal chromosome bin 2BS3-0.84-1.00 and flanked by SSR markers Xcfd238 and Xwmc243. MlIW170 co-segregated with Xcau516, an STS marker developed from RFLP marker Xwg516 that co-segregated with powdery mildew resistance gene Pm26 on 2BS. Four EST-STS markers, BE498358, BF201235, BQ160080, and BF146221, were integrated into the genetic linkage map of MlIW170. Three AFLP markers, XPaacMcac, XPagcMcta, XPaacMcag, and seven AFLP-derived SCAR markers, XcauG2, XcauG3, XcauG6, XcauG8, XcauG10, XcauG20, and XcauG25, were linked to MlIW170. XcauG3, a resistance gene analog (RGA)-like sequence, co-segregated with MlIW170. The non-glaucousness locus Iw1 was 18.77 cM distal to MlIW170. By comparative genomics of wheat-Brachypodium-rice genomic co-linearity, four EST-STS markers, CJ658408, CJ945509, BQ169830, CJ945085, and one STS marker XP2430, were developed and MlIW170 was mapped in an 2.69 cM interval that is co-linear with a 131 kb genomic region in Brachypodium and a 105 kb genomic region in rice. Four RGA-like sequences annotated in the orthologous Brachypodium genomic region could serve as chromosome landing target regions for map-based cloning of MlIW170.
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Affiliation(s)
- Ziji Liu
- State Key Laboratory for Agrobiotechnology, Beijing Key Laboratory of Crop Genetic Improvement, Key Laboratory of Crop Heterosis Research and Utilization, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
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