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Wang J, Han G, Liu H, Yan H, Jin Y, Cao L, Zhou Y, An D. Development of novel wheat-rye 6RS small fragment translocation lines with powdery mildew resistance and physical mapping of the resistance gene PmW6RS. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:179. [PMID: 37548696 DOI: 10.1007/s00122-023-04433-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 07/24/2023] [Indexed: 08/08/2023]
Abstract
KEY MESSAGE Novel wheat-rye 6RS small fragment translocation lines with powdery mildew resistance were developed, and the resistance gene PmW6RS was physically mapped onto 6RS-0.58-0.66-bin corresponding to 18.38 Mb in Weining rye. Rye (Secale cereale L., RR) contains valuable genes for wheat improvement. However, most of the rye resistance genes have not been successfully used in wheat cultivars. Identification of new rye resistance genes and transfer of these genes to wheat by developing small fragment translocation lines will make these genes more usable for wheat breeding. In this study, a broad-spectrum powdery mildew resistance gene PmW6RS was localized on rye chromosome arm 6RS using a new set of wheat-rye disomic and telosomic addition lines. To further study and use PmW6RS, 164 wheat-rye 6RS translocation lines were developed by 60Coγ-ray irradiation. Seedling and adult stage powdery mildew resistance analysis showed that 106 of the translocation lines were resistant. A physical map of 6RS was constructed using the 6RS translocation and deletion lines, and PmW6RS was localized in the 6RS-0.58-0.66-bin, flanked by markers X6RS-3 and X6RS-10 corresponding to the physical interval of 50.23-68.61 Mb in Weining rye genome. A total of 23 resistance-related genes were annotated. Nine markers co-segregate with the 6RS-0.58-0.66-bin, which can be used to rapidly trace the 6RS fragment carrying PmW6RS. Small fragment translocation lines with powdery mildew resistance were backcrossed with wheat cultivars, and 39 agronomically acceptable homozygous 6RS small fragment translocation lines were obtained. In conclusion, this study not only provides novel gene source and germplasms for wheat resistance breeding, but also laid a solid foundation for cloning of PmW6RS.
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Affiliation(s)
- Jing Wang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, China
| | - Guohao Han
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, China
| | - Hong Liu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, China
| | - Hanwen Yan
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, China
| | - Yuli Jin
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, China
| | - Lijun Cao
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, 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
| | - Diaoguo An
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, China.
- Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, 100101, China.
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Yang G, Tong C, Li H, Li B, Li Z, Zheng Q. Cytogenetic identification and molecular marker development of a novel wheat-Thinopyrum ponticum translocation line with powdery mildew resistance. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:2041-2057. [PMID: 35451594 DOI: 10.1007/s00122-022-04092-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 03/26/2022] [Indexed: 06/14/2023]
Abstract
A new wheat-Thinopyrum ponticum translocation line with excellent powdery mildew resistance was produced, and alien-specific PCR markers and FISH probes were developed by SLAF-seq. Powdery mildew is one of the most threatening diseases in wheat production. Thinopyrum ponticum (Podp.) Barkworth and D. R. Dewey, as a wild relative, has been used for wheat genetic improvement for the better part of a century. In view of the good powdery mildew resistance of Th. ponticum, we have been working to transfer the resistance genes from Th. ponticum to wheat by creating translocation lines. In this study, a new wheat-Th. ponticum translocation line with excellent resistance and agronomic performance was developed and through seedling disease evaluation, gene postulation and diagnostic marker analysis proved to carry a novel Pm gene derived from Th. ponticum. Cytogenetic analysis revealed that a small alien segment was translocated to the terminal of chromosome 1D to form new translocation TTh-1DS·1DL chromosome. The translocation breakpoint was determined to lie in 21.5 Mb region of chromosome 1D by using Wheat660K SNP array analysis. Based on specific-locus amplified fragment sequencing (SLAF-seq) technology, eight molecular markers and one repetitive sequence probe were developed, which were specific for Th. ponticum. Fortunately, the probe could be used in distinguishing six alien chromosome pairs in partial amphiploid Xiaoyan 7430 by fluorescence in situ hybridization (FISH). Furthermore, a Thinopyrum-specific oligonucleotide probe was designed depending on the sequence information of the FISH probe. The novel translocation line could be used in wheat disease resistance breeding, and these specific markers and probes will enable wheat breeders to rapidly trace the alien genome with the novel Pm gene(s).
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Affiliation(s)
- Guotang Yang
- 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
| | - Chunyan Tong
- 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
- College of Life Science and Technology, Inner Mongolia Normal University, Hohhot, 010022, China
| | - Hongwei 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
| | - Bin 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
| | - Zhensheng 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
| | - Qi Zheng
- 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.
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Han G, Yan H, Wang J, Cao L, Liu S, Li X, Zhou Y, Fan J, Li L, An D. Molecular Cytogenetic Identification of a New Wheat-Rye 6R Addition Line and Physical Localization of Its Powdery Mildew Resistance Gene. FRONTIERS IN PLANT SCIENCE 2022; 13:889494. [PMID: 35646041 PMCID: PMC9134188 DOI: 10.3389/fpls.2022.889494] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/13/2022] [Indexed: 05/07/2023]
Abstract
Rye (Secale cereale L.), a naturally cross-pollinating relative of wheat, is a tertiary gene donor and of substantial value in wheat improvement. Wheat powdery mildew is caused by Blumeria graminis f. sp. tritici (Bgt), which seriously affects yield and quality worldwide. Identifying and transferring new, effective resistance genes against powdery mildew from rye is important for wheat breeding. The current study developed a wheat-rye line YT2 resistant to powdery mildew by crossing, backcrossing, and self-pollination for multiple generations between octoploid triticale 09R2-100 and common wheat cultivar Shixin 616. YT2 was confirmed to be a 6R disomic addition and T1RS⋅1BL translocation line by genomic in situ hybridization (GISH), multicolor fluorescence in situ hybridization (mc-FISH), multicolor-GISH (mc-GISH), and molecular marker analyses. Disease responses to different Bgt isolates and genetic analysis showed that the powdery mildew resistance gene of YT2 was derived from the rye chromosome 6R of 09R2-100, which differed from the previously reported Pm genes from rye including Pm20 on 6RL. Resistance phenotype of different translocation lines and deletion lines derived from YT2 combined with newly developed 6RL-specific markers analysis suggested that the powdery mildew resistance gene of YT2 was localized to the region in chromosome 6RL: 890.09-967.51 Mb and flanked by markers XM189 and X4M19, corresponding to the reference genome of Weining rye. Therefore, YT2 could be used as a promising bridging parent for wheat disease resistance improvement.
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Affiliation(s)
- Guohao Han
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
| | - Hanwen Yan
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
| | - Jing Wang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
| | - Lijun Cao
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
| | - Shiyu Liu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
| | - Xiuquan Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yilin Zhou
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jieru Fan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lihui Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
- *Correspondence: Lihui Li,
| | - Diaoguo An
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China
- Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
- Diaoguo An,
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Dyda M, Tyrka M, Gołębiowska G, Rapacz M, Wędzony M. Genetic mapping of adult-plant resistance genes to powdery mildew in triticale. J Appl Genet 2021; 63:73-86. [PMID: 34561842 PMCID: PMC8755695 DOI: 10.1007/s13353-021-00664-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/03/2021] [Accepted: 09/13/2021] [Indexed: 11/21/2022]
Abstract
Triticale is a cereal of high economic importance; however, along with the increase in the area of this cereal, it is more often infected by the fungal pathogen Blumeria graminis, which causes powdery mildew. The rapid development of molecular biology techniques, in particular methods based on molecular markers may be an important tool used in modern plant breeding. Development of genetic maps, location of the QTLs defining the region of the genome associated with resistance and selection of markers linked to particular trait can be used to select resistant genotypes as well as to pyramidize several resistance genes in one variety. In this paper, we present a new, high-density genetic map of triticale doubled haploids (DH) population “Grenado” × “Zorro” composed of DArT, silicoDArT, and SNP markers. Composite interval mapping method was used to detect eight QTL regions associated with the area under disease progress curve (AUDPC) and 15 regions with the average value of powdery mildew infection (avPM) based on observation conducted in 3-year period in three different locations across the Poland. Two regions on rye chromosome 4R, and single loci on 5R and 6R were reported for the first time as regions associated with powdery mildew resistance. Among all QTLs, 14 candidate genes were identified coded cyclin-dependent kinase, serine/threonine-protein kinase-like protein as well as AMEIOTIC 1 homolog DYAD-like protein, DETOXIFICATION 16-like protein, and putative disease resistance protein RGA3. Three of identified candidate genes were found among newly described QTL regions associated with powdery mildew resistance in triticale.
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Affiliation(s)
- Mateusz Dyda
- Chair of Genetics, Institute of Biology, Pedagogical University of Cracow, Podchorążych 2, 30-084, Kraków, Poland.
| | - Mirosław Tyrka
- Department of Biotechnology and Bioinformatics, Faculty of Chemistry, Rzeszów University of Technology, Rzeszów, Poland
| | - Gabriela Gołębiowska
- Chair of Genetics, Institute of Biology, Pedagogical University of Cracow, Podchorążych 2, 30-084, Kraków, Poland
| | - Marcin Rapacz
- Department of Plant Breeding, Physiology and Seed Science, University of Agriculture in Kraków, Podłużna 3, 30-239, Krakow, Poland
| | - Maria Wędzony
- Chair of Genetics, Institute of Biology, Pedagogical University of Cracow, Podchorążych 2, 30-084, Kraków, Poland
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Song L, Zhao H, Zhang Z, Zhang S, Liu J, Zhang W, Zhang N, Ji J, Li L, Li J. Molecular Cytogenetic Identification of Wheat- Aegilops Biuncialis 5M b Disomic Addition Line with Tenacious and Black Glumes. Int J Mol Sci 2020; 21:E4053. [PMID: 32517065 PMCID: PMC7312955 DOI: 10.3390/ijms21114053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 05/23/2020] [Accepted: 06/03/2020] [Indexed: 12/02/2022] Open
Abstract
Production of wheat-alien disomic addition lines is of great value to the exploitation and utilization of elite genes originated from related species to wheat. In this study, a novel wheat-Aegilops biuncialis 5Mb disomic addition line WA317 was characterized by in situ hybridization (ISH) and specific-locus amplified fragment sequencing (SLAF-seq) markers. Compared to its parent Chinese Spring (CS), the glumes of WA317 had black color and were difficult to remove after harvesting, suggesting chromosome 5Mb carried gene(s) related to glume development and Triticeae domestication process. A total of 242 Ae. biuncialis SLAF-based markers (298 amplified patterns) were developed and further divided into four categories by Ae. biuncialis Y17, Ae. umbellulata Y139 and Ae. comosa Y258, including 172 markers amplifying the same bands of U and M genome, six and 102 markers amplifying U-specific and M-specific bands, respectively and eighteen markers amplifying specific bands in Y17. Among them, 45 markers had the specific amplifications in WA317 and were 5Mb specific markers. Taken together, line WA317 with tenacious and black glumes should serve as the foundation for understanding of the Triticeae domestication process and further exploitation of primitive alleles for wheat improvement. Ae. biuncialis SLAF-based markers can be used for studying syntenic relationships between U and M genomes as well as rapid tracking of U and M chromosomal segments in wheat background.
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Affiliation(s)
- Liqiang Song
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
- State Key Laboratory of Plant Cell and Chromosomal Engineering, Chinese Academy of Sciences, Beijing 100101, China
| | - Hui Zhao
- College of Bioscience and Bioengineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;
| | - Zhi Zhang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Z.Z.); (L.L.)
| | - Shuai Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
| | - Jiajia Liu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
| | - Wei Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
| | - Na Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
- State Key Laboratory of Plant Cell and Chromosomal Engineering, Chinese Academy of Sciences, Beijing 100101, China
| | - Jun Ji
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
- State Key Laboratory of Plant Cell and Chromosomal Engineering, Chinese Academy of Sciences, Beijing 100101, China
| | - Lihui Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Z.Z.); (L.L.)
| | - Junming Li
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
- State Key Laboratory of Plant Cell and Chromosomal Engineering, Chinese Academy of Sciences, Beijing 100101, China
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Xi W, Tang S, Du H, Luo J, Tang Z, Fu S. ND-FISH-positive oligonucleotide probes for detecting specific segments of rye (Secale cereale L.) chromosomes and new tandem repeats in rye. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.cj.2019.10.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Physical Location of New Stripe Rust Resistance Gene(s) and PCR-Based Markers on Rye (Secale cereale L.) Chromosome 5 Using 5R Dissection Lines. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9090498] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The rye (Secale cereale L.) 5R chromosome contains some elite genes that can be used to improve wheat cultivars. In this study, a set of 5RKu dissection lines was obtained, and 111 new PCR-based and 5RKu-specific markers were developed using the specific length amplified fragment sequencing (SLAF-seq) method. The 111 markers were combined with the 52 5RKu-specific markers previously reported, and 65 S. cereale Lo7 scaffolds were physically mapped to six regions of the 5RKu chromosome using the 5RKu dissection lines. Additionally, the 5RLKu arm carried stripe rust resistance gene(s) and it was located to the region L2, the same region where 22 5RKu-specific markers and 11 S. cereale Lo7 scaffolds were mapped. The stripe rust resistance gene(s) located in the 5RLKu arm might be new one(s) because its source and location are different from the previously reported ones, and it enriches the resistance source of stripe rust for wheat breeding programs. The markers and the S. cereale Lo7 scaffolds that were mapped to the six regions of the 5RKu chromosome can facilitate the utilization of elite genes on the 5R chromosome in the improvement of wheat cultivars.
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New ND-FISH-Positive Oligo Probes for Identifying Thinopyrum Chromosomes in Wheat Backgrounds. Int J Mol Sci 2019; 20:ijms20082031. [PMID: 31027154 PMCID: PMC6515231 DOI: 10.3390/ijms20082031] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/20/2019] [Accepted: 04/22/2019] [Indexed: 01/27/2023] Open
Abstract
Thinopyrum has been widely used to improve wheat (Triticum aestivum L.) cultivars. Non-denaturing fluorescence in situ hybridization (ND-FISH) technology using oligonucleotides (oligo) as probes provides a convenient and efficient way to identify alien chromosomes in wheat backgrounds. However, suitable ND-FISH-positive oligo probes for distinguishing Thinopyrum chromosomes from wheat are lacking. Two oligo probes, Oligo-B11 and Oligo-pThp3.93, were designed according to the published Thinopyrum ponticum (Th. ponticum)-specific repetitive sequences. Both Oligo-B11 and Oligo-pThp3.93 can be used for ND-FISH analysis and can replace conventional GISH and FISH to discriminate some chromosomes of Th. elongatum, Th. intermedium, and Th. ponticum in wheat backgrounds. The two oligo probes provide a convenient way for the utilization of Thinopyrum germplasms in future wheat breeding programs.
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Du H, Tang Z, Duan Q, Tang S, Fu S. Using the 6RL Ku Minichromosome of Rye ( Secale cereale L.) to Create Wheat-Rye 6D/6RL Ku Small Segment Translocation Lines with Powdery Mildew Resistance. Int J Mol Sci 2018; 19:ijms19123933. [PMID: 30544574 PMCID: PMC6320790 DOI: 10.3390/ijms19123933] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/28/2018] [Accepted: 12/04/2018] [Indexed: 11/16/2022] Open
Abstract
Long arms of rye (Secale cereale L.) chromosome 6 (6RL) carry powdery mildew resistance genes. However, these sources of resistance have not yet been successfully used in commercial wheat cultivars. The development of small segment translocation chromosomes carrying resistance may result in lines carrying the 6R chromosome becoming more commercially acceptable. However, no wheat-rye 6RL small segment translocation line with powdery mildew resistance has been reported. In this study, a wheat-rye 6RLKu minichromosome addition line with powdery mildew resistance was identified, and this minichromosome was derived from the segment between L2.5 and L2.8 of the 6RLKu chromosome arm. Following irradiation, the 6RLKu minichromosome divided into two smaller segments, named 6RLKumi200 and 6RLKumi119, and these fragments participated in the formation of wheat-rye small segment translocation chromosomes 6DS/6RLKumi200 and 6DL/6RLKumi119, respectively. The powdery mildew resistance gene was found to be located on the 6RLKumi119 segment. Sixteen 6RLKumi119-specific markers were developed, and their products were cloned and sequenced. Nucleotide BLAST searches indicated that 14 of the 16 sequences had 91–100% similarity with nine scaffolds derived from 6R chromosome of S. cereale L. Lo7. The small segment translocation chromosome 6DL/6RLKumi119 makes the practical utilization in agriculture of powdery mildew resistance gene on 6RLKu more likely. The nine scaffolds are useful for further studying the structure and function of this small segment.
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Affiliation(s)
- Haimei Du
- College of Agronomy, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
| | - Zongxiang Tang
- College of Agronomy, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Institute of Ecological Agriculture, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
| | - Qiong Duan
- College of Agronomy, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Institute of Ecological Agriculture, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
| | - Shuyao Tang
- College of Agronomy, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Institute of Ecological Agriculture, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
| | - Shulan Fu
- College of Agronomy, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
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Tang S, Tang Z, Qiu L, Yang Z, Li G, Lang T, Zhu W, Zhang J, Fu S. Developing New Oligo Probes to Distinguish Specific Chromosomal Segments and the A, B, D Genomes of Wheat ( Triticum aestivum L.) Using ND-FISH. FRONTIERS IN PLANT SCIENCE 2018; 9:1104. [PMID: 30093909 PMCID: PMC6070686 DOI: 10.3389/fpls.2018.01104] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 07/09/2018] [Indexed: 05/03/2023]
Abstract
Non-denaturing FISH (ND-FISH) technology has been widely used to study the chromosomes of Triticeae species because of its convenience. The oligo probes for ND-FISH analysis of wheat (Triticum aestivum L.) chromosomes are still limited. In this study, the whole genome shotgun assembly sequences (IWGSC WGA v0.4) and the first version of the reference sequences (IWGSC RefSeq v1.0) of Chinese Spring (T. aestivum L.) were used to find new tandem repeats. One hundred and twenty oligo probes were designed according to the new tandem repeats and used for ND-FISH analysis of chromosomes of wheat Chinese Spring. Twenty nine of the 120 oligo probes produce clear or strong signals on wheat chromosomes. Two of the 29 oligo probes can be used to conveniently distinguish wheat A-, B-, and D-genome chromosomes. Sixteen of the 29 oligo probes only produce clear or strong signals on the subtelomeric regions of 1AS, 5AS, 7AL, 4BS, 5BS, and 3DS arms, on the telomeric regions of 1AL, 5AL, 2BS, 3BL, 6DS, and 7DL arms, on the intercalary regions of 4AL and 2DL arms, and on the pericentromeric regions of 3DL and 6DS arms. Eleven of the 29 oligo probes generate distinct signal bands on several chromosomes and they are different from those previously reported. In addition, the short and long arms of 6D chromosome have been confirmed. The new oligo probes developed in this study are useful and convenient for distinguishing wheat chromosomes or specific segments of wheat chromosomes.
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Affiliation(s)
- Shuyao Tang
- Province Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, China
- Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, China
| | - Zongxiang Tang
- Province Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, China
- Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, China
| | - Ling Qiu
- Province Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, China
| | - Zujun Yang
- Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, China
| | - Guangrong Li
- Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, China
| | - Tao Lang
- Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, China
| | - Wenqian Zhu
- Province Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, China
- Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, China
| | - Jiehong Zhang
- Province Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, China
| | - Shulan Fu
- Province Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu, China
- *Correspondence: Shulan Fu,
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