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Li Y, Wang M, Hu X, Chen X. Identification of a Locus for High-Temperature Adult-Plant Resistance to Stripe Rust in the Wheat Yr8 Near-Isogenic Line Through Mutagenesis and Molecular Mapping. PLANT DISEASE 2024; 108:1261-1269. [PMID: 37938905 DOI: 10.1094/pdis-10-23-2037-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: 11/10/2023]
Abstract
Aegilops species are wheat relatives that harbor valuable disease resistance genes for wheat breeding. The wheat Yr8 near-isogenic line AvSYr8NIL has long been believed to carry only Yr8 for race-specific all-stage resistance to stripe rust, caused by Puccinia striiformis f. sp. tritici, derived from Aegilops comosa. However, AvSYr8NIL has been found to have high-temperature adult-plant (HTAP) resistance in our field and greenhouse tests. To confirm both HTAP and Yr8 resistance, seeds from AvSYr8NIL were treated with ethyl methanesulfonate to generate mutant lines. The mutant lines with only Yr8 (M641) and only HTAP resistance (M488) were crossed with the susceptible recurrent parent Avocet S (AvS). The F1 and F4 lines of AvS/M641 were phenotyped with Yr8-avirulent races in the seedling stage at the low-temperature (4 to 20°C) profile, while the F1, F2, F4, and F5 lines of AvS/M488 were phenotyped with Yr8-virulent races in the adult-plant stage at the high-temperature (10 to 30°C) profile. Both Yr8 and the HTAP resistance gene (YrM488) were recessive. The F4 populations of AvS/M641 and AvS/M488 were genotyped using polymorphic Kompetitive allele-specific PCR markers converted from single-nucleotide polymorphisms. Yr8 was mapped to a 0.66-cM fragment, and YrM488 was mapped to a 1.22-cM interval on chromosome 2D. The physical distance between the two resistance genes was estimated to be more than 500 Mb, indicating their distinct loci. The mutant lines with separated resistance genes would be useful in enhancing our understanding of different types of resistance and in further studying the interactions between wheat and the stripe rust pathogen.
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Affiliation(s)
- Yuxiang Li
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
- Department of Plant Pathology, Washington State University, Pullman, WA 99164, U.S.A
| | - Meinan Wang
- Department of Plant Pathology, Washington State University, Pullman, WA 99164, U.S.A
| | - Xiaoping Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xianming Chen
- Department of Plant Pathology, Washington State University, Pullman, WA 99164, U.S.A
- U.S. Department of Agriculture, Agricultural Research Service, Wheat Health, Genetics, and Quality Research Unit, Pullman, WA 99164, U.S.A
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Farkas A, Gaál E, Ivanizs L, Blavet N, Said M, Holušová K, Szőke-Pázsi K, Spitkó T, Mikó P, Türkösi E, Kruppa K, Kovács P, Darkó É, Szakács É, Bartoš J, Doležel J, Molnár I. Chromosome genomics facilitates the marker development and selection of wheat-Aegilops biuncialis addition, substitution and translocation lines. Sci Rep 2023; 13:20499. [PMID: 37993509 PMCID: PMC10665447 DOI: 10.1038/s41598-023-47845-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/19/2023] [Indexed: 11/24/2023] Open
Abstract
The annual goatgrass, Aegilops biuncialis is a rich source of genes with considerable agronomic value. This genetic potential can be exploited for wheat improvement through interspecific hybridization to increase stress resistance, grain quality and adaptability. However, the low throughput of cytogenetic selection hampers the development of alien introgressions. Using the sequence of flow-sorted chromosomes of diploid progenitors, the present study enabled the development of chromosome-specific markers. In total, 482 PCR markers were validated on wheat (Mv9kr1) and Ae. biuncialis (MvGB642) crossing partners, and 126 on wheat-Aegilops additions. Thirty-two markers specific for U- or M-chromosomes were used in combination with GISH and FISH for the screening of 44 Mv9kr1 × Ae. biuncialis BC3F3 genotypes. The predominance of chromosomes 4M and 5M, as well as the presence of chromosomal aberrations, may indicate that these chromosomes have a gametocidal effect. A new wheat-Ae. biuncialis disomic 4U addition, 4M(4D) and 5M(5D) substitutions, as well as several introgression lines were selected. Spike morphology and fertility indicated that the Aegilops 4M or 5M compensated well for the loss of 4D and 5D, respectively. The new cytogenetic stocks represent valuable genetic resources for the introgression of key genes alleles into wheat.
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Affiliation(s)
- András Farkas
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Eszter Gaál
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary.
| | - László Ivanizs
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Nicolas Blavet
- Institute for Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, 779 00, Olomouc, Czech Republic
| | - Mahmoud Said
- Institute for Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, 779 00, Olomouc, Czech Republic
- Field Crops Research Institute, Agricultural Research Centre, 9 Gamma Street, Giza, Cairo, 12619, Egypt
| | - Kateřina Holušová
- Institute for Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, 779 00, Olomouc, Czech Republic
| | - Kitti Szőke-Pázsi
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Tamás Spitkó
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Péter Mikó
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Edina Türkösi
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Klaudia Kruppa
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Péter Kovács
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Éva Darkó
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Éva Szakács
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
| | - Jan Bartoš
- Institute for Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, 779 00, Olomouc, Czech Republic
| | - Jaroslav Doležel
- Institute for Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, 779 00, Olomouc, Czech Republic
| | - István Molnár
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Lóránd Research Network, Martonvásár, 2462, Hungary
- Institute for Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, 779 00, Olomouc, Czech Republic
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Ma C, Qian J, Feng Y, Sehgal SK, Zhao Y, Chen Q, Li H, Liu W. Genetic Mapping of a Novel Gene PmAege7M from Aegilops geniculata Conferring Resistance to Wheat Powdery Mildew. PLANT DISEASE 2023; 107:3608-3615. [PMID: 37272041 DOI: 10.1094/pdis-04-23-0764-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 one of the most damaging foliage diseases of wheat across the world. Aegilops geniculata Roth is a valuable gene resource for enhancing wheat resistance to powdery mildew. This study identified Ae. geniculata accession PI 487224 as immune and PI 487228 as susceptible to powdery mildew. Genetic analysis of the F1, F2, and F2:3 progeny derived from PI 487224 × PI 487228 showed that powdery mildew resistance in PI 487224 was controlled by two independent dominant genes located on two different nonhomologous chromosomes. By combing bulked segregant RNA-Seq, genetic linkage analysis of a single resistance gene segregation population, and marker analysis of a set of 14 wheat-Ae. geniculata chromosome addition lines, one of the resistance genes, temperately designated PmAege7M, was mapped to a 4.9-cM interval flanked by markers STS7-55926 and SNP7-45792/STS7-65911 on the long arm of chromosome 7 Mg of PI 487224, spanning 604.73 to 622.82 Mb on the 7D long arm based on the Ae. tauschii reference genome (Aet_v4.0). The map and closely linked markers of PmAege7M from Ae. geniculata in this study will facilitate the transfer of PmAege7M into common wheat and fine mapping of the gene.
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Affiliation(s)
- Chao Ma
- The State Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Jiajun Qian
- The State Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Yajun Feng
- The State Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Sunish K Sehgal
- Department of Agronomy, Horticulture, and Plant Science, South Dakota State University, Bookings, SD 57007, U.S.A
| | - Yue Zhao
- The State Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Qifan Chen
- The State Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Huanhuan Li
- The State Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Wenxuan Liu
- The State Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
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Hu P, Ren Y, Xu J, Luo W, Wang M, Song P, Guan Y, Hu H, Li C. Identification of acyl-CoA-binding protein gene in Triticeae species reveals that TaACBP4A-1 and TaACBP4A-2 positively regulate powdery mildew resistance in wheat. Int J Biol Macromol 2023; 246:125526. [PMID: 37379955 DOI: 10.1016/j.ijbiomac.2023.125526] [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: 04/12/2023] [Revised: 06/16/2023] [Accepted: 06/21/2023] [Indexed: 06/30/2023]
Abstract
Plant acyl-CoA-binding proteins (ACBPs), which contain the conserved ACB domain, participate in multiple biological processes, however, there are few reports on wheat ACBPs. In this study, the ACBP genes from nine different species were identified comprehensively. The expression patterns of TaACBP genes in multiple tissues and under various biotic stresses were determined by qRT-PCR. The function of selected TaACBP genes was studied by virus-induced gene silencing. A total of 67 ACBPs were identified from five monocotyledonous and four dicotyledonous species and divided into four classes. Tandem duplication analysis of the ACBPs suggested that tandem duplication events occurred in Triticum dicoccoides, but there was no tandem duplication event in wheat ACBP genes. Evolutionary analysis suggested that the TdACBPs may have experienced gene introgression during tetraploid evolution, while TaACBP gene loss events occurred during hexaploid wheat evolution. The expression pattern showed that all the TaACBP genes were expressed, and most of them were responsive to induction by Blumeria graminis f. sp. tritici or Fusarium graminearum. Silencing of TaACBP4A-1 and TaACBP4A-2 increased powdery mildew susceptibility in the common wheat BainongAK58. Furthermore, TaACBP4A-1, which belonged to class III, physically interacted with autophagy-related ubiquitin-like protein TaATG8g in yeast cells. This study provided a valuable reference for further investigations into the functional and molecular mechanisms of the ACBP gene family.
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Affiliation(s)
- Ping Hu
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China.
| | - Yueming Ren
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China
| | - Jun Xu
- College of Landscape Architecture and Horticulture, Henan Institute of Science and Technology, Xinxiang, China
| | - Wanglong Luo
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China
| | - Mengfei Wang
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China
| | - Puwen Song
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China.
| | - Yuanyuan Guan
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China
| | - Haiyan Hu
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China.
| | - Chengwei Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China.
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Kamel AM, Metwally K, Sabry M, Albalawi DA, Abbas ZK, Darwish DBE, Al-Qahtani SM, Al-Harbi NA, Alzuaibr FM, Khalil HB. The Expression of Triticum aestivum Cysteine-Rich Receptor-like Protein Kinase Genes during Leaf Rust Fungal Infection. PLANTS (BASEL, SWITZERLAND) 2023; 12:2932. [PMID: 37631144 PMCID: PMC10457733 DOI: 10.3390/plants12162932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/27/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023]
Abstract
Understanding the role of cysteine-rich receptor-like kinases (CRKs) in plant defense mechanisms is crucial for enhancing wheat resistance to leaf rust fungus infection. Here, we identified and verified 164 members of the CRK gene family using the Triticum aestivum reference version 2 collected from the international wheat genome sequencing consortium (IWGSC). The proteins exhibited characteristic features of CRKs, including the presence of signal peptides, cysteine-rich/stress antifungal/DUF26 domains, transmembrane domains, and Pkinase domains. Phylogenetic analysis revealed extensive diversification within the wheat CRK gene family, indicating the development of distinct specific functional roles to wheat plants. When studying the expression of the CRK gene family in near-isogenic lines (NILs) carrying Lr57- and Lr14a-resistant genes, Puccinia triticina, the causal agent of leaf rust fungus, triggered temporal gene expression dynamics. The upregulation of specific CRK genes in the resistant interaction indicated their potential role in enhancing wheat resistance to leaf rust, while contrasting gene expression patterns in the susceptible interaction highlighted potential susceptibility associated CRK genes. The study uncovered certain CRK genes that exhibited expression upregulation upon leaf rust infection and the Lr14a-resistant gene. The findings suggest that targeting CRKs may present a promising strategy for improving wheat resistance to rust diseases.
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Affiliation(s)
- Ahmed M. Kamel
- Department of Genetics, Faculty of Agriculture, Ain Shams University, 68 Hadayek Shoubra, Cairo 11241, Egypt
| | - Khaled Metwally
- Department of Genetics, Faculty of Agriculture, Ain Shams University, 68 Hadayek Shoubra, Cairo 11241, Egypt
| | - Mostafa Sabry
- Department of Genetics, Faculty of Agriculture, Ain Shams University, 68 Hadayek Shoubra, Cairo 11241, Egypt
| | - Doha A. Albalawi
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia (D.B.E.D.)
| | - Zahid K. Abbas
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia (D.B.E.D.)
| | - Doaa B. E. Darwish
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia (D.B.E.D.)
- Botany Department, Faculty of Science, Mansoura University, Mansoura 35511, Egypt
| | - Salem M. Al-Qahtani
- Biology Department, University College of Tayma, University of Tabuk, P.O. Box 741, Tabuk 47512, Saudi Arabia
| | - Nadi A. Al-Harbi
- Biology Department, University College of Tayma, University of Tabuk, P.O. Box 741, Tabuk 47512, Saudi Arabia
| | - Fahad M. Alzuaibr
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia (D.B.E.D.)
| | - Hala B. Khalil
- Department of Genetics, Faculty of Agriculture, Ain Shams University, 68 Hadayek Shoubra, Cairo 11241, Egypt
- Department of Biological Sciences, College of Science, King Faisal University, P.O. Box 380, Al-Ahsa 31982, Saudi Arabia
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Yadav IS, Rawat N, Chhuneja P, Kaur S, Uauy C, Lazo G, Gu YQ, Doležel J, Tiwari VK. Comparative genomic analysis of 5M g chromosome of Aegilops geniculata and 5U u chromosome of Aegilops umbellulata reveal genic diversity in the tertiary gene pool. FRONTIERS IN PLANT SCIENCE 2023; 14:1144000. [PMID: 37521926 PMCID: PMC10373596 DOI: 10.3389/fpls.2023.1144000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 06/22/2023] [Indexed: 08/01/2023]
Abstract
Wheat is one of the most important cereal crops for the global food security. Due to its narrow genetic base, modern bread wheat cultivars face challenges from increasing abiotic and biotic stresses. Since genetic improvement is the most sustainable approach, finding novel genes and alleles is critical for enhancing the genetic diversity of wheat. The tertiary gene pool of wheat is considered a gold mine for genetic diversity as novel genes and alleles can be identified and transferred to wheat cultivars. Aegilops geniculata and Ae. umbellulata are the key members of the tertiary gene pool of wheat and harbor important genes against abiotic and biotic stresses. Homoeologous-group five chromosomes (5Uu and 5Mg) have been extensively studied from Ae. geniculata and Ae. umbellulata as they harbor several important genes including Lr57, Lr76, Yr40, Yr70, Sr53 and chromosomal pairing loci. In the present study, using chromosome DNA sequencing and RNAseq datasets, we performed comparative analysis to study homoeologous gene evolution in 5Mg, 5Uu, and group 5 wheat chromosomes. Our findings highlight the diversity of transcription factors and resistance genes, resulting from the differential expansion of the gene families. Both the chromosomes were found to be enriched with the "response to stimulus" category of genes providing resistance against biotic and abiotic stress. Phylogenetic study positioned the M genome closer to the D genome, with higher proximity to the A genome than the B genome. Over 4000 genes were impacted by SNPs on 5D, with 4-5% of those genes displaying non-disruptive variations that affect gene function.
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Affiliation(s)
- Inderjit S. Yadav
- Department of Plant Sciences and Landscape Architecture, University of Maryland, College Park, MD, United States
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Nidhi Rawat
- Department of Plant Sciences and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Satinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | | | - Gerard Lazo
- Agricultural Research Service, United States Department of Agriculture (USDA), Albany, CA, United States
| | - Yong Q. Gu
- Agricultural Research Service, United States Department of Agriculture (USDA), Albany, CA, United States
| | - Jaroslav Doležel
- Centre of Plant Structural and Functional Genomics, Institute of Experimental Botany, Olomouc, Czechia
| | - Vijay K. Tiwari
- Department of Plant Sciences and Landscape Architecture, University of Maryland, College Park, MD, United States
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Ashraf R, Johansson E, Vallenback P, Steffenson BJ, Bajgain P, Rahmatov M. Identification of a Small Translocation from 6R Possessing Stripe Rust Resistance to Wheat. PLANT DISEASE 2023; 107:720-729. [PMID: 35900348 DOI: 10.1094/pdis-07-22-1666-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: 06/15/2023]
Abstract
Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici Eriks. & E. Henn, is the most devastating fungal disease of bread wheat. Here, a wheat-rye multiple disomic substitution line, SLU126 4R (4D), 5R (5D), and 6R (7D), possessing resistance against 25 races of P. striiformis f. sp. tritici, was used and crossed with Chinese Spring ph1b to induce homeologous recombination to produce introgressions with a reduced rye chromosome segment. Seedling assays confirmed that the stripe rust resistance from SLU126 was retained over multiple generations. Through genotyping-by-sequencing (GBS) platforms and aligning the putative GBS-single-nucleotide polymorphism (SNPs) to the full-length annotated rye nucleotide-binding leucine-rich repeat (NLR) genes in the parental lines (CS ph1b, SLU126, CSA, and SLU820), we identified the physical position of 26, 13, and 9 NLR genes on chromosomes 6R, 4R, and 5R, respectively. The physical positions of 25 NLR genes on chromosome 6R were identified from 568,460,437 bp to 879,958,268 bp in the 6RL chromosome segment. Based on these NLR positions on the 6RL chromosome segment, the three linked SNPs (868,123,650 to 873,285,112 bp) were validated through kompetitive allele-specific PCR (KASP) assays in SLU126 and resistance plants in the family 29-N3-5. Using these KASP markers, we identified a small piece of the rye translocation (i.e., as a possible 6DS.6DL.6RL.6DL) containing the stripe resistance gene, temporary designated YrSLU, within the 6RL segment. This new stripe rust resistance gene provides an additional asset for wheat improvement to mitigate yield losses caused by stripe rust.
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Affiliation(s)
- Rimsha Ashraf
- Swedish University of Agricultural Sciences, Department of Plant Breeding, P.O. Box 190, SE-234 22 Lomma, Sweden
| | - Eva Johansson
- Swedish University of Agricultural Sciences, Department of Plant Breeding, P.O. Box 190, SE-234 22 Lomma, Sweden
| | | | - Brian J Steffenson
- Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, U.S.A
| | - Prabin Bajgain
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, U.S.A
| | - Mahbubjon Rahmatov
- Swedish University of Agricultural Sciences, Department of Plant Breeding, P.O. Box 190, SE-234 22 Lomma, Sweden
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Wang Y, Fan J, Xiao Y, Feng X, Zhang H, Chen C, Ji W, Wang Y. Genetic analysis of resistance to powdery mildew on 7M g chromosome of wheat-Aegilops geniculata, development and utilization of specific molecular markers. BMC PLANT BIOLOGY 2022; 22:564. [PMID: 36463134 PMCID: PMC9719254 DOI: 10.1186/s12870-022-03934-w] [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: 04/14/2022] [Accepted: 11/08/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Powdery mildew caused by Blumeria graminis f. sp. tritici (Bgt) is prevalent in the main wheat-producing regions of China, resulting in severe yield losses in recent years. Mining and utilization of resistant genes from wild relatives of wheat is the most environmentally sound measure to control disease. Aegilops geniculata Roth (2n = 2x = 28, UgUgMgMg) is an essential and valuable disease-resistance gene donor for wheat improvement as a close relative species. RESULTS In this study, to validate powdery mildew resistance locus on chromosome 7Mg, two genetic populations were constructed and through crossing wheat - Ae. geniculata 7Mg disomic addition line NA0973-5-4-1-2-9-1 and 7Mg (7 A) alien disomic substitution line W16998 with susceptible Yuanfeng175 (YF175, authorized varieties from Shaanxi province in 2005), respectively. Cytological examination, in situ hybridization (ISH), and functional molecular markers analysis revealed that the plants carrying chromosome 7Mg showed high resistance to powdery mildew in both F1 and F2 generation at the seedling stage. Besides, 84 specific markers were developed to identify the plants carrying chromosome 7Mg resistance based on the specific-locus amplified fragment sequencing (SLAF-seq) technique. Among them, four markers were selected randomly to check the reliability in F2 segregating populations derived from YF175/NA0973-5-4-1-2-9-1 and YF175/W16998. In summary, the above analysis confirmed that a dominant high powdery mildew resistance gene was located on chromosome 7Mg of Ae. geniculata. CONCLUSION The results provide a basis for mapping the powdery mildew resistance gene mapping on chromosome 7Mg and specific markers for their utilization in the future.
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Affiliation(s)
- Yongfu Wang
- College of Agronomy, Northwest A&F University, 712100, Yangling, China
| | - Jianzhong Fan
- College of Agronomy, Northwest A&F University, 712100, Yangling, China
| | - Yi Xiao
- College of Agronomy, Northwest A&F University, 712100, Yangling, China
| | - Xianbo Feng
- College of Agronomy, Northwest A&F University, 712100, Yangling, China
| | - Hong Zhang
- College of Agronomy, Northwest A&F University, 712100, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, 712100, Yangling, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, 712100, Yangling, China
| | - Chunhuan Chen
- College of Agronomy, Northwest A&F University, 712100, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, 712100, Yangling, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, 712100, Yangling, China
| | - Wanquan Ji
- College of Agronomy, Northwest A&F University, 712100, Yangling, China.
- State Key Laboratory of Crop Stress Biology for Arid Areas, 712100, Yangling, China.
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, 712100, Yangling, China.
| | - Yajuan Wang
- College of Agronomy, Northwest A&F University, 712100, Yangling, China.
- State Key Laboratory of Crop Stress Biology for Arid Areas, 712100, Yangling, China.
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, 712100, Yangling, China.
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Zuo Y, Dai S, Song Z, Xiang Q, Li W, Liu G, Li J, Xu D, Yan Z. Identification and Characterization of Wheat- Aegilops comosa 7M (7A) Disomic Substitution Lines with Stripe Rust and Powdery Mildew Resistance. PLANT DISEASE 2022; 106:2663-2671. [PMID: 35253481 DOI: 10.1094/pdis-11-21-2485-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: 06/14/2023]
Abstract
Aegilops comosa (MM, 2n = 2x = 14), an important diploid species from the wheat tertiary gene pool, contains many unique genes/traits of potential use for wheat breeding, such as disease resistance. In this study, three sister lines, NAL-32, NAL-33, and NAL-34, were identified from a wheat-A. comosa distant cross using fluorescence in situ hybridization, simple sequence repeat markers, and PCR-based unique gene markers combined with single nucleotide polymorphism (SNP) array analysis. Genetically, NAL-32 contained neither an alien nor translocation chromosome, whereas NAL-33 and NAL-34 had disomic 7M (7A) substitution chromosomes but differed in the absence or presence of the 1BL/1RS translocation chromosomes, respectively. The absence of 7A in NAL-33 and NAL-34 and the unusual 1B in the latter were verified by wheat 55K SNP arrays. The two 7M (7A) substitution lines had similar levels of resistance to stripe rust and powdery mildew, but better than that of NAL-32 and their common wheat parents, suggesting that the stripe rust and powdery mildew resistance of NAL-33 and NAL-34 were derived from the 7M of A. comosa. This research provides important bridge materials that can potentially be used for transferring stripe rust and powdery mildew resistance.
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Affiliation(s)
- Yuanyuan Zuo
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, P.R. China
| | - Shoufen Dai
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, P.R. China
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, Sichuan 611130, P.R. China
| | - Zhongping Song
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, P.R. China
| | - Qin Xiang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, P.R. China
| | - Wenjia Li
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, P.R. China
| | - Gang Liu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, P.R. China
| | - Jian Li
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, P.R. China
| | - Donghe Xu
- Japan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki 305-8686, Japan
| | - Zehong Yan
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, P.R. China
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, Sichuan 611130, P.R. China
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10
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Liang X, Xu H, Zhu S, Zheng Y, Zhong W, Li H, Niu L, Wu L, Zhang L, Song J, He H, Liu C, Ma P. Genetically Dissecting the Novel Powdery Mildew Resistance Gene in Wheat Breeding Line PBDH1607. PLANT DISEASE 2022; 106:2145-2154. [PMID: 35108069 DOI: 10.1094/pdis-12-21-2771-re] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Powdery mildew is one of the most destructive diseases in wheat production. Identifying novel resistance genes and deploying them in new cultivars is the most effective approach to minimize wheat losses caused by powdery mildew. In this study, wheat breeding line PBDH1607 showed high resistance to powdery mildew at both the seedling and adult plant stages. Genetic analysis of the seedling data demonstrated that the resistance was controlled by a single dominant gene, tentatively designated PmPBDH. The ΔSNP index based on bulked segregant RNA sequencing indicated that PmPBDH was associated with an interval of about 30.8 Mb (713.5 to 744.3 Mb) on chromosome arm 4AL. Using newly developed markers, we mapped PmPBDH to a 3.2-cM interval covering 7.1 Mb (719,055,516 to 726,215,121 bp). This interval differed from those of Pm61 (717,963,176 to 719,260,469 bp), MlIW30 (732,769,506 to 732,790,522 bp), and MlNSF10 (729,275,816 to 731,365,462 bp) reported on the same chromosome arm. PmPBDH also differed from Pm61, MlIW30, and MlNSF10 by its response spectrum, origin, or inheritance mode, suggesting that PmPBDH should be a new Pm gene. In the candidate interval, five genes were found to be associated with PmPBDH via time course gene expression analysis, and thus they are candidate genes of PmPBDH. Six closely linked markers, including two kompetitive allele-specific PCR markers, were confirmed to be applicable for tracking PmPBDH in marker-assisted breeding.
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Affiliation(s)
- Xiao Liang
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
| | - Hongxing Xu
- School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Shanying Zhu
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yongshen Zheng
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong 250100, China
| | - Wen Zhong
- Shandong Seed Administration Station, Jinan, Shandong 250100, China
| | - Haosheng Li
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong 250100, China
| | - Liping Niu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Liru Wu
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
| | - Lipei Zhang
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
| | - Jiancheng Song
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
| | - Huagang He
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Cheng Liu
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong 250100, China
| | - Pengtao Ma
- College of Life Sciences, Yantai University, Yantai, Shandong 264005, China
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11
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Hu P, Ren Y, Xu J, Wei Q, Song P, Guan Y, Gao H, Zhang Y, Hu H, Li C. Identification of ankyrin-transmembrane-type subfamily genes in Triticeae species reveals TaANKTM2A-5 regulates powdery mildew resistance in wheat. FRONTIERS IN PLANT SCIENCE 2022; 13:943217. [PMID: 35937376 PMCID: PMC9353636 DOI: 10.3389/fpls.2022.943217] [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: 05/13/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
The ankyrin-transmembrane (ANKTM) subfamily is the most abundant subgroup of the ANK superfamily, with critical roles in pathogen defense. However, the function of ANKTM proteins in wheat immunity remains largely unexplored. Here, a total of 381 ANKTMs were identified from five Triticeae species and Arabidopsis, constituting five classes. Among them, class a only contains proteins from Triticeae species and the number of ANKTM in class a of wheat is significantly larger than expected, even after consideration of the ploidy level. Tandem duplication analysis of ANKTM indicates that Triticum urartu, Triticum dicoccoides and wheat all had experienced tandem duplication events which in wheat-produced ANKTM genes all clustered in class a. The above suggests that not only did the genome polyploidization result in the increase of ANKTM gene number, but that tandem duplication is also a mechanism for the expansion of this subfamily. Micro-collinearity analysis of Triticeae ANKTMs indicates that some ANKTM type genes evolved into other types of ANKs in the evolution process. Public RNA-seq data showed that most of the genes in class d and class e are expressed, and some of them show differential responses to biotic stresses. Furthermore, qRT-PCR results showed that some ANKTMs in class d and class e responded to powdery mildew. Silencing of TaANKTM2A-5 by barley stripe mosaic virus-induced gene silencing compromised powdery mildew resistance in common wheat Bainongaikang58. Findings in this study not only help to understand the evolutionary process of ANKTM genes, but also form the basis for exploring disease resistance genes in the ANKTM gene family.
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Affiliation(s)
- Ping Hu
- Henan Engineering Research Center of Crop Genome Editing, Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - Yueming Ren
- Henan Engineering Research Center of Crop Genome Editing, Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - Jun Xu
- College of Landscape Architecture and Horticulture, Henan Institute of Science and Technology, Xinxiang, China
| | - Qichao Wei
- Henan Engineering Research Center of Crop Genome Editing, Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - Puwen Song
- Henan Engineering Research Center of Crop Genome Editing, Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - Yuanyuan Guan
- Henan Engineering Research Center of Crop Genome Editing, Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - Huanting Gao
- Henan Engineering Research Center of Crop Genome Editing, Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - Yang Zhang
- Henan Engineering Research Center of Crop Genome Editing, Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - Haiyan Hu
- Henan Engineering Research Center of Crop Genome Editing, Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, College of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - Chengwei Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
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12
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Türkösi E, Ivanizs L, Farkas A, Gaál E, Kruppa K, Kovács P, Szakács É, Szőke-Pázsi K, Said M, Cápal P, Griffiths S, Doležel J, Molnár I. Transfer of the ph1b Deletion Chromosome 5B From Chinese Spring Wheat Into a Winter Wheat Line and Induction of Chromosome Rearrangements in Wheat- Aegilops biuncialis Hybrids. FRONTIERS IN PLANT SCIENCE 2022; 13:875676. [PMID: 35769292 PMCID: PMC9234525 DOI: 10.3389/fpls.2022.875676] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 05/09/2022] [Indexed: 06/10/2023]
Abstract
Effective utilization of genetic diversity in wild relatives to improve wheat requires recombination between wheat and alien chromosomes. However, this is suppressed by the Pairing homoeologous gene, Ph1, on the long arm of wheat chromosome 5B. A deletion mutant of the Ph1 locus (ph1b) has been used widely to induce homoeologous recombination in wheat × alien hybrids. However, the original ph1b mutation, developed in Chinese Spring (CS) background has poor agronomic performance. Hence, alien introgression lines are first backcrossed with adapted wheat genotypes and after this step, alien chromosome segments are introduced into breeding lines. In this work, the ph1b mutation was transferred from two CSph1b mutants into winter wheat line Mv9kr1. Homozygous genotypes Mv9kr1 ph1b/ph1b exhibited improved plant and spike morphology compared to Chinese Spring. Flow cytometric chromosome analysis confirmed reduced DNA content of the mutant 5B chromosome in both wheat genotype relative to the wild type chromosome. The ph1b mutation in the Mv9kr1 genotype allowed wheat-alien chromosome pairing in meiosis of Mv9kr1ph1b_K × Aegilops biuncialis F1 hybrids, predominantly with the Mb-genome chromosomes of Aegilops relative to those of the Ub genome. High frequency of wheat-Aegilops chromosome interactions resulted in rearranged chromosomes identified in the new Mv9kr1ph1b × Ae. Biuncialis amphiploids, making these lines valuable sources for alien introgressions. The new Mv9kr1ph1b mutant genotype is a unique resource to support alien introgression breeding of hexaploid wheat.
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Affiliation(s)
- Edina Türkösi
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Loránd Research Network, Martonvásár, Hungary
| | - László Ivanizs
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Loránd Research Network, Martonvásár, Hungary
| | - András Farkas
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Loránd Research Network, Martonvásár, Hungary
| | - Eszter Gaál
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Loránd Research Network, Martonvásár, Hungary
| | - Klaudia Kruppa
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Loránd Research Network, Martonvásár, Hungary
| | - Péter Kovács
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Loránd Research Network, Martonvásár, Hungary
- Institute of Genetics and Biotechnology, Szent István Campus, MATE, Gödöllő, Hungary
| | - Éva Szakács
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Loránd Research Network, Martonvásár, Hungary
| | - Kitti Szőke-Pázsi
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Loránd Research Network, Martonvásár, Hungary
| | - Mahmoud Said
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute for Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
- Field Crops Research Institute, Agricultural Research Centre, Giza, Egypt
| | - Petr Cápal
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute for Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
| | | | - Jaroslav Doležel
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute for Experimental Botany of the Czech Academy of Sciences, Olomouc, Czechia
| | - István Molnár
- Department of Biological Resources, Centre for Agricultural Research, Eötvös Loránd Research Network, Martonvásár, Hungary
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13
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Wang Y, Cheng X, Yang X, Wang C, Zhang H, Deng P, Liu X, Chen C, Ji W, Wang Y. Molecular cytogenetics for a wheat-Aegilops geniculata 3M g alien addition line with resistance to stripe rust and powdery mildew. BMC PLANT BIOLOGY 2021; 21:575. [PMID: 34872505 PMCID: PMC8647465 DOI: 10.1186/s12870-021-03360-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Aegilops geniculata Roth is closely related to common wheat (Triticum aestivum L.) and is a valuable genetic resource for improvement of wheat. RESULTS In this study, the W19513 line was derived from the BC1F10 progeny of a cross between wheat 'Chinese Spring' and Ae. geniculata SY159. Cytological examination showed that W19513 contained 44 chromosomes. Twenty-two bivalents were formed at the first meiotic metaphase I in the pollen mother cellsand the chromosomes were evenly distributed to opposite poles at meiotic anaphase I. Genomic in situ hybridization demonstrated that W19513 carried a pair of alien chromosomes from the M genome. Fluorescence in situ hybridization confirmed detection of variation in chromosomes 4A and 6B. Functional molecular marker analysis using expressed sequence tag-sequence-tagged site and PCR-based landmark unique gene primers revealed that the alien gene belonged to the third homologous group. The marker analysis confirmed that the alien chromosome pair was 3Mg. In addition, to further explore the molecular marker specificity of chromosome 3Mg, based on the specific locus amplified fragment sequencing technique, molecular markers specific for W19513 were developed with efficiencies of up to 47.66%. The W19513 line was inoculated with the physiological race E09 of powdery mildew (Blumeria graminis f. sp. tritici) at the seedling stage and showed moderate resistance. Field inoculation with a mixture of the races CYR31, CYR32, CYR33, and CYR34 of the stripe rust fungus (Puccinia striiformis f. sp. triticii) revealed that the line W19513 showed strong resistance. CONCLUSIONS This study provides a foundation for use of the line W19513 in future genetic research and wheat improvement.
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Affiliation(s)
- Yongfu Wang
- College of Agronomy, Northwest A&F University, Yangling, 712100, China
| | - Xiaofang Cheng
- College of Agronomy, Northwest A&F University, Yangling, 712100, China
| | - Xiaoying Yang
- College of Agronomy, Northwest A&F University, Yangling, 712100, China
| | - Changyou Wang
- College of Agronomy, Northwest A&F University, Yangling, 712100, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling, 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling, 712100, China
| | - Hong Zhang
- College of Agronomy, Northwest A&F University, Yangling, 712100, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling, 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling, 712100, China
| | - Pingchuan Deng
- College of Agronomy, Northwest A&F University, Yangling, 712100, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling, 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling, 712100, China
| | - Xinlun Liu
- College of Agronomy, Northwest A&F University, Yangling, 712100, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling, 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling, 712100, China
| | - Chunhuan Chen
- College of Agronomy, Northwest A&F University, Yangling, 712100, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling, 712100, China
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling, 712100, China
| | - Wanquan Ji
- College of Agronomy, Northwest A&F University, Yangling, 712100, China.
- State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling, 712100, China.
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling, 712100, China.
| | - Yajuan Wang
- College of Agronomy, Northwest A&F University, Yangling, 712100, China.
- State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling, 712100, China.
- Shaanxi Research Station of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, Yangling, 712100, China.
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14
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Yang G, Zheng Q, Hu P, Li H, Luo Q, Li B, Li Z. Cytogenetic identification and molecular marker development for the novel stripe rust-resistant wheat- Thinopyrum intermedium translocation line WTT11. ABIOTECH 2021; 2:343-356. [PMID: 36304423 PMCID: PMC9590478 DOI: 10.1007/s42994-021-00060-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 08/23/2021] [Indexed: 02/02/2023]
Abstract
Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most destructive diseases of wheat (Triticum aestivum L.) worldwide. Xiaoyan 78829, a partial amphidiploid developed by crossing common wheat with Thinopyrum intermedium, is immune to wheat stripe rust. To transfer the resistance gene of this excellent germplasm resource to wheat, the translocation line WTT11 was produced by pollen irradiation and assessed for immunity to stripe rust races CYR32, CYR33 and CYR34. A novel stripe rust-resistance locus derived from Th. intermedium was confirmed by linkage and diagnostic marker analyses. Molecular cytogenetic analyses revealed that WTT11 carries a TTh·2DL translocation. The breakpoint of 1B was located at 95.5 MB, and the alien segments were found to be homoeologous to wheat-group chromosomes 6 and 7 according to a wheat660K single-nucleotide polymorphism (SNP) array analysis. Ten previously developed PCR-based markers were confirmed to rapidly trace the alien segments of WTT11, and 20 kompetitive allele-specific PCR (KASP) markers were developed to enable genotyping of Th. intermedium and common wheat. Evaluation of agronomic traits in two consecutive crop seasons uncovered some favorable agronomic traits in WTT11, such as lower plant height and longer main panicles, that may be applicable to wheat improvement. As a novel genetic resource, the new resistance locus may be useful for wheat disease-resistance breeding. Supplementary Information The online version contains supplementary material available at 10.1007/s42994-021-00060-3.
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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
| | - 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
| | - Pan Hu
- 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
| | - 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
| | - Qiaoling Luo
- 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
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15
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Steadham J, Schulden T, Kalia B, Koo DH, Gill BS, Bowden R, Yadav IS, Chhuneja P, Erwin J, Tiwari V, Rawat N. An approach for high-resolution genetic mapping of distant wild relatives of bread wheat: example of fine mapping of Lr57 and Yr40 genes. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:2671-2686. [PMID: 34013456 DOI: 10.1007/s00122-021-03851-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
The article reports a powerful but simple approach for high-resolution mapping and eventual map-based cloning of agronomically important genes from distant relatives of wheat, using the already existing germplasm resources. Wild relatives of wheat are a rich reservoir of genetic diversity for its improvement. The effective utilization of distant wild relatives in isolation of agronomically important genes is hindered by the lack of recombination between the homoeologous chromosomes. In this study, we propose a simple yet powerful approach that can be applied for high-resolution mapping of a targeted gene from wheat's distant gene pool members. A wheat-Aegilops geniculata translocation line TA5602 with a small terminal segment from chromosome 5 Mg of Ae. geniculata translocated to 5D of wheat contains genes Lr57 and Yr40 for leaf rust and stripe rust resistance, respectively. To map these genes, TA5602 was crossed with a susceptible Ae. geniculata 5 Mg addition line. Chromosome pairing between the 5 Mg chromosomes of susceptible and resistant parents resulted in the development of a high-resolution mapping panel for the targeted genes. Next-generation-sequencing data from flow-sorted 5 Mg chromosome of Ae. geniculata allowed us to generate 5 Mg-specific markers. These markers were used to delineate Lr57 and Yr40 genes each to distinct ~ 1.5 Mb physical intervals flanked by gene markers on 5 Mg. The method presented here will allow researchers worldwide to utilize existing germplasm resources in genebanks and seed repositories toward routinely performing map-based cloning of important genes from tertiary gene pools of wheat.
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Affiliation(s)
- James Steadham
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, 20742, USA
| | - Taylor Schulden
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, 20742, USA
| | - Bhanu Kalia
- Department of Plant Pathology, Kansas State University, Manhattan, KS, 66506, USA
| | - Dal-Hoe Koo
- Department of Plant Pathology, Kansas State University, Manhattan, KS, 66506, USA
| | - Bikram S Gill
- Department of Plant Pathology, Kansas State University, Manhattan, KS, 66506, USA
| | - Robert Bowden
- Hard Winter Wheat Genetics Research Unit, USDA-ARS, Manhattan, KS, 66506, USA
| | - Inderjit Singh Yadav
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, 20742, USA
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India
| | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India
| | - John Erwin
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, 20742, USA
| | - Vijay Tiwari
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, 20742, USA.
| | - Nidhi Rawat
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, 20742, USA.
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16
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Bansal M, Adamski NM, Toor PI, Kaur S, Sharma A, Srivastava P, Bansal U, Uauy C, Chhuneja P. A robust KASP marker for selection of four pairs of linked leaf rust and stripe rust resistance genes introgressed on chromosome arm 5DS from different wheat genomes. Mol Biol Rep 2021; 48:5209-5216. [PMID: 34213711 DOI: 10.1007/s11033-021-06525-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/25/2021] [Indexed: 11/24/2022]
Abstract
Stripe rust and leaf rust are among the most devastating diseases of wheat, limiting its production globally. Wheat wild relatives harbour genetic diversity for new genes and alleles for all major wheat diseases. However, the use of this genetic variation from wild progenitor and non-progenitor species has been limited in the breeding programs. Reasons include limited recombination of donor and recipient genomes and the lack of tertiary gene pool markers. Here, we describe the development of a SNP based marker from the flow-sorted and sequenced Aegilops umbellulata chromosome 5U which can be used for marker assisted selection of four pair of alien leaf rust and stripe rust resistance genes. Lr57-Yr40_CAPS16 marker was reported earlier to be linked with alien leaf and stripe rust resistance genes introgressed on wheat chromosome 5DS. Due to its dominant nature and laborious to work with, a new SNP-based KASP marker, XTa5DS-2754099_kasp23, was developed from the same CAPS marker contig. XTa5DS-2754099_kasp23 was tested in Aegilops umbellulata, Ae. geniculata, Ae. peregrina and Ae. caudata derived alien introgression lines, which harbour four pairs of linked leaf and stripe rust genes; Lr76-Yr70, Lr57-Yr40, LrP- YrP, LrAc-YrAc, respectively. This KASP marker was found to be effective for the selection of the aforesaid four pairs of leaf rust and stripe rust resistance genes. Further, we tested and validated XTa5DS-2754099_kasp23 on commercial varieties and advanced breeding lines from four countries (India, Egypt, Australia and UK) including hexaploid and durum wheat. Our results provide evidence that KASP marker, XTa5DS-2754099_kasp23 can be used in marker-assisted selection of the four pairs of rust resistance alien genes in wheat breeding programmes.
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Affiliation(s)
- Mitaly Bansal
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
| | | | - Puneet Inder Toor
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
| | - Satinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
| | - Achla Sharma
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
| | - Puja Srivastava
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
| | - Urmil Bansal
- University of Sydney Plant Breeding Institute-Cobbitty, PMB 4011, Narellan, NSW, 2567, Australia
| | - Cristobal Uauy
- John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India.
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Adonina IG, Timonova EM, Salina EA. Introgressive Hybridization of Common Wheat: Results and Prospects. RUSS J GENET+ 2021. [DOI: 10.1134/s1022795421030029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Introgression and genetic mapping of leaf rust and stripe rust resistance in Aegilops triuncialis. J Genet 2021. [DOI: 10.1007/s12041-020-01253-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sharma A, Srivastava P, Mavi GS, Kaur S, Kaur J, Bala R, Singh TP, Sohu VS, Chhuneja P, Bains NS, Singh GP. Resurrection of Wheat Cultivar PBW343 Using Marker-Assisted Gene Pyramiding for Rust Resistance. FRONTIERS IN PLANT SCIENCE 2021; 12:570408. [PMID: 33643338 PMCID: PMC7905314 DOI: 10.3389/fpls.2021.570408] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 01/07/2021] [Indexed: 05/29/2023]
Abstract
Wheat variety PBW343, released in India in 1995, became the most widely grown cultivar in the country by the year 2000 owing to its wide adaptability and yield potential. It initially succumbed to leaf rust, and resistance genes Lr24 and Lr28 were transferred to PBW343. After an unbroken reign of about 10 years, the virulence against gene Yr27 made PBW343 susceptible to stripe rust. Owing to its wide adaptability and yield potential, PBW343 became the prime target for marker-assisted introgression of stripe rust resistance genes. The leaf rust-resistant versions formed the base for pyramiding stripe rust resistance genes Yr5, Yr10, Yr15, Yr17, and Yr70, in different introgression programs. Advanced breeding lines with different gene combinations, PBW665, PBW683, PBW698, and PBW703 were tested in national trials but could not be released as varieties. The genes from alien segments, Aegilops ventricosa (Lr37/Yr17/Sr38) and Aegilops umbellulata (Lr76/Yr70), were later pyramided in PBW343. Modified marker-assisted backcross breeding was performed, and 81.57% of the genetic background was recovered in one of the selected derivative lines, PBW723. This line was evaluated in coordinated national trials and was released for cultivation under timely sown irrigated conditions in the North Western Plain Zone of India. PBW723 yields an average of 58.0 qtl/ha in Punjab with high potential yields. The genes incorporated are susceptible to stripe rust individually, but PBW723 with both genes showed enhanced resistance. Three years post-release, PBW723 occupies approximately 8-9% of the cultivated area in the Punjab state. A regular inflow of diverse resistant genes, their rapid mobilization to most productive backgrounds, and keeping a close eye on pathogen evolution is essential to protect the overall progress for productivity and resistance in wheat breeding, thus helping breeders to keep pace with pathogen evolution.
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Affiliation(s)
- Achla Sharma
- Department of Plant Breeding & Genetics, Punjab Agricultural University, Ludhiana, India
| | - Puja Srivastava
- Department of Plant Breeding & Genetics, Punjab Agricultural University, Ludhiana, India
| | - G. S. Mavi
- Department of Plant Breeding & Genetics, Punjab Agricultural University, Ludhiana, India
| | - Satinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Jaspal Kaur
- Department of Plant Breeding & Genetics, Punjab Agricultural University, Ludhiana, India
| | - Ritu Bala
- Department of Plant Breeding & Genetics, Punjab Agricultural University, Ludhiana, India
| | | | - V. S. Sohu
- Department of Plant Breeding & Genetics, Punjab Agricultural University, Ludhiana, India
| | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Navtej S. Bains
- Department of Plant Breeding & Genetics, Punjab Agricultural University, Ludhiana, India
| | - G. P. Singh
- Indian Institute of Wheat & Barley Research, Karnal, India
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20
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Kaur S, Kaur J, Mavi GS, Dhillon GS, Sharma A, Singh R, Devi U, Chhuneja P. Pyramiding of High Grain Weight With Stripe Rust and Leaf Rust Resistance in Elite Indian Wheat Cultivar Using a Combination of Marker Assisted and Phenotypic Selection. Front Genet 2021; 11:593426. [PMID: 33414807 PMCID: PMC7783403 DOI: 10.3389/fgene.2020.593426] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/30/2020] [Indexed: 11/13/2022] Open
Abstract
Wheat (Triticum aestivum L.) is an important cereal crop globally as well as in India and yield improvement programs encounter a strong impediment from ever-evolving rust pathogens. Hence, durable rust resistance is always a priority trait for wheat breeders globally. Grain weight, represented as thousand grain weight (TGW), is the most important yield-contributing trait in wheat. In the present study high TGW has been transferred into two elite Indian wheat cultivars PBW343 and PBW550 from a high TGW genotype, Rye selection 111, selected from local germplasm. In the background of PBW343 and PBW550, an increase in TGW upto 27.34 and 18% was observed, respectively (with respect to recipient parents), through conventional backcross breeding with phenotypic selections in 3 years replicated RBD trials. Resistance to leaf rust and stripe rust has been incorporated in the high TGW version of PBW550 through marker assisted pyramiding of stripe rust resistance gene Yr15 using marker Xuhw302, and a pair of linked leaf rust and stripe rust resistance genes Lr57-Yr40 using marker Ta5DS-2754099_kasp23. Improved versions of PBW550 with increased TGW ranging from 45.0 to 46.2 g (up to a 9% increase) and stacked genes for stripe and leaf rust resistance have been developed. This study serves as proof of utilizing conventional breeding and phenotypic selection combined with modern marker assisted selection in improvement of important wheat cultivars as a symbiont of conventional and moderan techniques.
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Affiliation(s)
- Satinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Jaspreet Kaur
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - G S Mavi
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | | | - Achla Sharma
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Rohtas Singh
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Urmila Devi
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
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21
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Rani K, Raghu BR, Jha SK, Agarwal P, Mallick N, Niranjana M, Sharma JB, Singh AK, Sharma NK, Rajkumar S, Tomar SMS. A novel leaf rust resistance gene introgressed from Aegilops markgrafii maps on chromosome arm 2AS of wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:2685-2694. [PMID: 32507913 DOI: 10.1007/s00122-020-03625-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
A novel leaf rust resistance gene, LrM, introgressed from Aegilops markgrafii and mapped on chromosome 2AS using SSR- and SNP-based PCR markers will aid in broadening the genetic base of rust resistance in wheat. A new leaf rust resistance gene tentatively named LrM was introgressed from the diploid non-progenitor species Ae. markgrafii (2n = 2x = 14, genome CC) into common wheat using the nulli-5B mechanism. The introgression line ER9-700 showed a high degree of resistance against a wide spectrum of Puccinia triticina pathotypes. Genetic analysis was performed using the F1, F2, F2:3 and BC1F1 generations derived from the cross ER9-700/Agra Local. The results showed a single dominant gene for leaf rust resistance. The resistance gene LrM was mapped on chromosome arm 2AS using SSR- and SNP-based PCR markers. Preliminary mapping with SSR markers in the F2:3 population from the cross ER9-700/Agra Local identified two SSR markers flanking the LrM. SNPs were identified in the genomic region flanked by SSR markers, and SNP-based PCR markers were developed to construct the final map. Three SNP-based PCR markers co-segregated and mapped closest to the resistance gene at a distance of 2 cM. The gene LrM was distinguished from all the other genes designated and mapped on chromosome arm 2AS by molecular markers and rust reaction. All five markers used in the mapping amplified identical alleles in the donor Ae. markgrafii accession and introgression line ER9-700. The chromosomal location and rust reaction suggest that LrM is a novel leaf rust resistance gene that may be useful in broadening the genetic base of leaf rust resistance in wheat.
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Affiliation(s)
- K Rani
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
- ICAR-Directorate of Groundnut Research, Junagadh, 362001, India
| | - B R Raghu
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
- ICAR-Indian Institute of Horticultural Research, Bengaluru, 560089, India
| | - S K Jha
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Priyanka Agarwal
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Niharika Mallick
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - M Niranjana
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - J B Sharma
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - A K Singh
- ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110012, India
| | - N K Sharma
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - S Rajkumar
- ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110012, India
| | - S M S Tomar
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
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22
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Ghimire B, Sapkota S, Bahri BA, Martinez-Espinoza AD, Buck JW, Mergoum M. Fusarium Head Blight and Rust Diseases in Soft Red Winter Wheat in the Southeast United States: State of the Art, Challenges and Future Perspective for Breeding. FRONTIERS IN PLANT SCIENCE 2020; 11:1080. [PMID: 32765563 PMCID: PMC7378807 DOI: 10.3389/fpls.2020.01080] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 06/30/2020] [Indexed: 05/21/2023]
Abstract
Among the biotic constraints to wheat (Triticum aestivum L.) production, fusarium head blight (FHB), caused by Fusarium graminearum, leaf rust (LR), caused by Puccinia triticina, and stripe rust (SR) caused by Puccinia striiformis are problematic fungal diseases worldwide. Each can significantly reduce grain yield while FHB causes additional food and feed safety concerns due to mycotoxin contamination of grain. Genetic resistance is the most effective and sustainable approach for managing wheat diseases. In the past 20 years, over 500 quantitative trait loci (QTLs) conferring small to moderate effects for the different FHB resistance types have been reported in wheat. Similarly, 79 Lr-genes and more than 200 QTLs and 82 Yr-genes and 140 QTLs have been reported for seedling and adult plant LR and SR resistance, respectively. Most QTLs conferring rust resistance are race-specific generally conforming to a classical gene-for-gene interaction while resistance to FHB exhibits complex polygenic inheritance with several genetic loci contributing to one resistance type. Identification and deployment of additional genes/QTLs associated with FHB and rust resistance can expedite wheat breeding through marker-assisted and/or genomic selection to combine small-effect QTL in the gene pool. LR disease has been present in the southeast United States for decades while SR and FHB have become increasingly problematic in the past 20 years, with FHB arguably due to increased corn acreage in the region. Currently, QTLs on chromosome 1B from Jamestown, 1A, 1B, 2A, 2B, 2D, 4A, 5A, and 6A from W14, Ning7840, Ernie, Bess, Massey, NC-Neuse, and Truman, and 3B (Fhb1) from Sumai 3 for FHB resistance, Lr9, Lr10, Lr18, Lr24, Lr37, LrA2K, and Lr2K38 genes for LR resistance, and Yr17 and YrR61 for SR resistance have been extensively deployed in southeast wheat breeding programs. This review aims to disclose the current status of FHB, LR, and SR diseases, summarize the genetics of resistance and breeding efforts for the deployment of FHB and rust resistance QTL on soft red winter wheat cultivars, and present breeding strategies to achieve sustainable management of these diseases in the southeast US.
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Affiliation(s)
- Bikash Ghimire
- Department of Plant Pathology, University of Georgia, Griffin Campus, Griffin, GA, United States
| | - Suraj Sapkota
- Department of Plant Pathology, University of Georgia, Griffin Campus, Griffin, GA, United States
- Institute of Plant Breeding, Genetics, and Genomics, University of Georgia, Griffin Campus, Griffin, GA, United States
| | - Bochra A. Bahri
- Department of Plant Pathology, University of Georgia, Griffin Campus, Griffin, GA, United States
- Institute of Plant Breeding, Genetics, and Genomics, University of Georgia, Griffin Campus, Griffin, GA, United States
| | | | - James W. Buck
- Department of Plant Pathology, University of Georgia, Griffin Campus, Griffin, GA, United States
| | - Mohamed Mergoum
- Institute of Plant Breeding, Genetics, and Genomics, University of Georgia, Griffin Campus, Griffin, GA, United States
- Department of Crop and Soil Sciences, University of Georgia, Griffin Campus, Griffin, GA, United States
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23
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Characterization and Evaluation of Resistance to Powdery Mildew of Wheat- Aegilops geniculata Roth 7M g (7A) Alien Disomic Substitution Line W16998. Int J Mol Sci 2020; 21:ijms21051861. [PMID: 32182810 PMCID: PMC7084935 DOI: 10.3390/ijms21051861] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 02/29/2020] [Accepted: 03/05/2020] [Indexed: 11/25/2022] Open
Abstract
Aegilops geniculata Roth has been used as a donor of disease-resistance genes, to enrich the gene pool for wheat (Triticum aestivum) improvement through distant hybridization. In this study, the wheat–Ae. geniculata alien disomic substitution line W16998 was obtained from the BC1F8 progeny of a cross between the common wheat ‘Chinese Spring’ (CS) and Ae. geniculata Roth (serial number: SY159//CS). This line was identified using cytogenetic techniques, analysis of genomic in situ hybridization (GISH), functional molecular markers (Expressed sequence tag-sequence-tagged site (EST–STS) and PCR-based landmark unique gene (PLUG), fluorescence in situ hybridization (FISH), sequential fluorescence in situ hybridization–genomic in situ hybridization (sequential FISH–GISH), and assessment of agronomic traits and powdery mildew resistance. During the anaphase of meiosis, these were evenly distributed on both sides of the equatorial plate, and they exhibited high cytological stability during the meiotic metaphase and anaphase. GISH analysis indicated that W16998 contained a pair of Ae. geniculata alien chromosomes and 40 common wheat chromosomes. One EST–STS marker and seven PLUG marker results showed that the introduced chromosomes of Ae. geniculata belonged to homoeologous group 7. Nullisomic–tetrasomic analyses suggested that the common wheat chromosome, 7A, was absent in W16998. FISH and sequential FISH–GISH analyses confirmed that the introduced Ae. geniculata chromosome was 7Mg. Therefore, W16998 was a wheat–Ae. geniculata 7Mg (7A) alien disomic substitution line. Inoculation of isolate E09 (Blumeria graminis f. sp. tritici) in the seedling stage showed that SY159 and W16998 were resistant to powdery mildew, indeed nearly immune, whereas CS was highly susceptible. Compared to CS, W16998 exhibited increased grain weight and more spikelets, and a greater number of superior agronomic traits. Consequently, W16998 was potentially useful. Germplasms transfer new disease-resistance genes and prominent agronomic traits into common wheat, giving the latter some fine properties for breeding.
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24
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Bansal M, Adamski NM, Toor PI, Kaur S, Molnár I, Holušová K, Vrána J, Doležel J, Valárik M, Uauy C, Chhuneja P. Aegilops umbellulata introgression carrying leaf rust and stripe rust resistance genes Lr76 and Yr70 located to 9.47-Mb region on 5DS telomeric end through a combination of chromosome sorting and sequencing. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:903-915. [PMID: 31894365 DOI: 10.1007/s00122-019-03514-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 12/17/2019] [Indexed: 05/13/2023]
Abstract
Lr76 and Yr70 have been fine mapped using the sequence of flow-sorted recombinant 5D chromosome from wheat-Ae. umbellulata introgression line. The alien introgression has been delineated to 9.47-Mb region on short arm of wheat chromosome 5D. Leaf rust and stripe rust are among the most damaging diseases of wheat worldwide. Wheat cultivation based on limited number of rust resistance genes deployed over vast areas expedites the emergence of new pathotypes warranting a continuous deployment of new resistance genes. In this paper, fine mapping of Aegilops umbellulata-derived leaf rust and stripe rust resistance genes Lr76 and Yr70 is being reported. We flow sorted and paired-end sequenced 5U chromosome of Ae. umbellulata, recombinant chromosome 5D (5DIL) from wheat-Ae. umbellulata introgression line pau16057 and 5DRP of recurrent parent WL711. Chromosome 5U reads were mapped against the reference Chinese Spring chromosome 5D sequence, and alien-specific SNPs were identified. Chromosome 5DIL and 5DRP sequences were de novo assembled, and alien introgression-specific markers were designed by selecting 5U- and 5D-specific SNPs. Overall, 27 KASP markers were mapped in high-resolution population consisting of 1404 F5 RILs. The mapping population segregated for single gene each for leaf rust and stripe rust resistance. The physical order of the SNPs in pau16057 was defined by projecting the 27 SNPs against the IWGSC RefSeq v1.0 sequence. Based on this physical map, the size of Ae. umbellulata introgression was determined to be 9.47 Mb on the distal most end of the short arm of chromosome 5D. This non-recombining alien segment carries six NB-LRR encoding genes based on NLR annotation of assembled chromosome 5DIL sequence and IWGSC RefSeq v1.1 gene models. The presence of SNPs and other sequence variations in these genes between pau16057 and WL711 suggested that they are candidates for Lr76 and Yr70.
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Affiliation(s)
- Mitaly Bansal
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
| | | | - Puneet Inder Toor
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
| | - Satinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
| | - István Molnár
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, 783 71, Olomouc, Czech Republic
- Centre for Agricultural Research, Agricultural Institute, Hungarian Academy of Sciences, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - Kateřina Holušová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, 783 71, Olomouc, Czech Republic
| | - Jan Vrána
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, 783 71, Olomouc, Czech Republic
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, 783 71, Olomouc, Czech Republic
| | - Miroslav Valárik
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, 783 71, Olomouc, Czech Republic
| | | | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India.
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25
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Prasad P, Savadi S, Bhardwaj SC, Gupta PK. The progress of leaf rust research in wheat. Fungal Biol 2020; 124:537-550. [PMID: 32448445 DOI: 10.1016/j.funbio.2020.02.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 02/09/2020] [Accepted: 02/19/2020] [Indexed: 01/25/2023]
Abstract
Leaf rust (also called brown rust) in wheat, caused by fungal pathogen Puccinia triticina Erikss. (Pt) is one of the major constraints in wheat production worldwide. Pt is widespread with diverse population structure and undergoes rapid evolution to produce new virulent races against resistant cultivars that are regularly developed to provide resistance against the prevailing races of the pathogen. Occasionally, the disease may also take the shape of an epidemic in some wheat-growing areas causing major economic losses. In the recent past, substantial progress has been made in characterizing the sources of leaf rust resistance including non-host resistance (NHR). Progress has also been made in elucidating the population biology of Pt and the mechanisms of wheat-Pt interaction. So far, ∼80 leaf rust resistance genes (Lr genes) have been identified and characterized; some of them have also been used for the development of resistant wheat cultivars. It has also been shown that a gene-for-gene relationship exists between individual wheat Lr genes and the corresponding Pt Avr genes so that no Lr gene can provide resistance unless the prevailing race of the pathogen carries the corresponding Avr gene. Several Lr genes have also been cloned and their products characterized, although no Avr gene corresponding a specific Lr gene has so far been identified. However, several candidate effectors for Pt have been identified and functionally characterized using genome-wide analyses, transcriptomics, RNA sequencing, bimolecular fluorescence complementation (BiFC), virus-induced gene silencing (VIGS), transient expression and other approaches. This review summarizes available information on different aspects of the pathogen Pt, genetics/genomics of leaf rust resistance in wheat including cloning and characterization of Lr genes and epigenetic regulation of disease resistance.
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Affiliation(s)
- Pramod Prasad
- Indian Institute of Wheat and Barley Research, Regional Station, Shimla, Himachal Pradesh, 171002, India
| | - Siddanna Savadi
- ICAR-Directorate of Cashew Research, Puttur, Karnataka, 574202, India
| | - S C Bhardwaj
- Indian Institute of Wheat and Barley Research, Regional Station, Shimla, Himachal Pradesh, 171002, India
| | - P K Gupta
- Department of Genetics and Plant Breeding, Ch.Charan Singh University, Meerut, 250004, India.
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26
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Mohler V, Schmolke M, Zeller FJ, Hsam SLK. Genetic analysis of Aegilops tauschii-derived seedling resistance to leaf rust in synthetic hexaploid wheat. J Appl Genet 2020; 61:163-168. [PMID: 31981185 PMCID: PMC7148280 DOI: 10.1007/s13353-020-00541-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 12/19/2019] [Accepted: 01/08/2020] [Indexed: 10/29/2022]
Abstract
Seedling resistance to leaf rust available in the synthetic hexaploid wheat line Syn137 was characterised by means of cytogenetic and linkage mapping. Monosomic analysis located a single dominant gene for leaf rust resistance on chromosome 5D. Molecular mapping not only confirmed this location but also positioned the gene to the distal part of the long arm of chromosome 5D. A test of allelism showed that the gene, tentatively named LrSyn137, is independent but closely linked to Lr1. It appears that Syn137 is occasionally heterogeneous for Lr1 since the analysis of the Lr1-specific marker RGA567-5 in the genetic mapping population indicated the presence of Lr1. Syn137 represents another source of genetic variation that can be useful for the diversification of leaf rust resistance in wheat cultivars.
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Affiliation(s)
- Volker Mohler
- Bayerische Landesanstalt für Landwirtschaft (LfL), Institut für Pflanzenbau und Pflanzenzüchtung (IPZ), Am Gereuth 8, 85354, Freising, Germany.
| | - Michael Schmolke
- Plant Breeding, Centre for Food and Life Sciences Weihenstephan, Technical University of Munich, Liesel-Beckmann-Str. 2, 85354, Freising, Germany
| | - Friedrich J Zeller
- Plant Breeding, Centre for Food and Life Sciences Weihenstephan, Technical University of Munich, Liesel-Beckmann-Str. 2, 85354, Freising, Germany
| | - Sai L K Hsam
- Plant Breeding, Centre for Food and Life Sciences Weihenstephan, Technical University of Munich, Liesel-Beckmann-Str. 2, 85354, Freising, Germany
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27
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Liu W, Kolmer J, Rynearson S, Chen X, Gao L, Anderson JA, Turner MK, Pumphrey M. Identifying Loci Conferring Resistance to Leaf and Stripe Rusts in a Spring Wheat Population ( Triticum aestivum) via Genome-Wide Association Mapping. PHYTOPATHOLOGY 2019; 109:1932-1940. [PMID: 31282284 DOI: 10.1094/phyto-04-19-0143-r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A previous genome-wide association study (GWAS) for leaf rust (caused by Puccinia triticina) resistance identified 46 resistance quantitative trait loci (QTL) in an elite spring wheat leaf rust resistance diversity panel. With the aim of characterizing the pleiotropic resistance sources to both leaf rust and stripe rust (caused by P. striiformis f. sp. tritici), stripe rust responses were tested in five U.S. environments at the adult-plant stage and to five U.S. races at the seedling stage. The data revealed balanced phenotypic distributions in this population except for the seedling response to P. striiformis f. sp. tritici race PSTv-37. GWAS for stripe rust resistance discovered a total of 21 QTL significantly associated with all-stage or field resistance on chromosomes 1B, 1D, 2B, 3B, 4A, 5A, 5B, 5D, 6A, 6B, 7A, and 7B. Previously documented pleiotropic resistance genes Yr18/Lr34 and Yr46/Lr67 and tightly linked genes Yr17-Lr37 and Yr30-Sr2-Lr27 were also detected in this population. In addition, stripe rust resistance QTL Yrswp-2B.1, Yrswp-3B, and Yrswp-7B colocated with leaf rust resistance loci 2B_3, 3B_t2, and 7B_4, respectively. Haplotype analysis uncovered that Yrswp-3B and 3B_t2 were either tightly linked genes or the same gene for resistance to both stripe and leaf rusts. Single nucleotide polymorphism markers IWB35950, IWB74350, and IWB72134 for the 3B QTL conferring resistance to both rusts should be useful in incorporating the resistance allele(s) in new cultivars.
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Affiliation(s)
- Weizhen Liu
- School of Computer Science and Technology, Wuhan University of Technology, Wuhan, Hubei 430070, China
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164-6430, U.S.A
| | - James Kolmer
- Cereal Disease Laboratory, U.S. Department of Agriculture Agricultural Research Service, St. Paul, MN 55108, U.S.A
- Department of Plant Pathology, University of Minnesota, St. Paul, MN 55018, U.S.A
| | - Sheri Rynearson
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164-6430, U.S.A
| | - Xianming Chen
- Wheat Health, Genetics, and Quality Research Unit, U.S. Department of Agriculture Agricultural Research Service, Pullman, WA 99164-6430, U.S.A
- Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, U.S.A
| | - Liangliang Gao
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, U.S.A
- Department of Plant Pathology, Kansas State University, Manhattan, KS 66502, U.S.A
| | - James A Anderson
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, U.S.A
| | - M Kathryn Turner
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, U.S.A
- The Land Institute, Salina, KS 67401, U.S.A
| | - Michael Pumphrey
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164-6430, U.S.A
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Kishii M. An Update of Recent Use of Aegilops Species in Wheat Breeding. FRONTIERS IN PLANT SCIENCE 2019; 10:585. [PMID: 31143197 PMCID: PMC6521781 DOI: 10.3389/fpls.2019.00585] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/18/2019] [Indexed: 05/16/2023]
Abstract
Aegilops species have significantly contributed to wheat breeding despite the difficulties involved in the handling of wild species, such as crossability and incompatibility. A number of biotic resistance genes have been identified and incorporated into wheat varieties from Aegilops species, and this genus is also contributing toward improvement of complex traits such as yield and abiotic tolerance for drought and heat. The D genome diploid species of Aegilops tauschii has been utilized most often in wheat breeding programs. Other Aegilops species are more difficult to utilize in the breeding because of lower meiotic recombination frequencies; generally they can be utilized only after extensive and time-consuming procedures in the form of translocation/introgression lines. After the emergence of Ug99 stem rust and wheat blast threats, Aegilops species gathered more attention as a form of new resistance sources. This article aims to update recent progress on Aegilops species, as well as to cover new topics around their use in wheat breeding.
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Affiliation(s)
- Masahiro Kishii
- Global Wheat Program, International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
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Narang D, Kaur S, Steuernagel B, Ghosh S, Dhillon R, Bansal M, Uauy C, Wulff BBH, Chhuneja P. Fine mapping of Aegilops peregrina co-segregating leaf and stripe rust resistance genes to distal-most end of 5DS. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:1473-1485. [PMID: 30706082 DOI: 10.1007/s00122-019-03293-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 01/21/2019] [Indexed: 06/09/2023]
Abstract
Novel rust resistance genes LrP and YrP from Ae. peregrina identified on chromosome 5D and the linked markers will aid deployment of these genes in combination with other major/minor genes. Aegilops peregrina, a wild tetraploid relative of wheat with genome constitution UUSS, displays genetic variation for resistance to leaf and stripe (yellow) rust. The wheat Ae. peregrina introgression line, IL pau16058, harbouring leaf and stripe rust resistance, was crossed with wheat cv. WL711 to generate an F2:3 mapping population. Inheritance studies on this population indicated the transfer of dominant co-segregating resistance to leaf and stripe rust. Ethyl methane sulphonate mutagenesis of IL pau16058 identified independent loss-of-function mutants for leaf and stripe rust resistance, indicating that the leaf and stripe rust resistance is controlled by independent genes, herein designated LrP and YrP, respectively. A high-resolution genetic map of LrP and YrP was constructed using the Illumina Infinium iSelect 90K wheat array and resistance gene enrichment sequencing (RenSeq) markers. The map spans 4.19 cM on the distal-most region of the short arm of chromosome 5D, consisting of eight SNP markers and one microsatellite marker. LrP and YrP co-segregated with markers BS00163889 and 5DS44573_snp and was flanked distally by the SNP marker BS00129707 and proximally by 5DS149010, defining a 15.71 Mb region in the RefSeq v1.0 genome assembly.
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Affiliation(s)
- Deepika Narang
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India
| | - Satinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India
| | | | - Sreya Ghosh
- John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Roopan Dhillon
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India
| | - Mitaly Bansal
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India
| | - Cristobal Uauy
- John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| | | | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India.
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Balfourier F, Bouchet S, Robert S, De Oliveira R, Rimbert H, Kitt J, Choulet F, Paux E. Worldwide phylogeography and history of wheat genetic diversity. SCIENCE ADVANCES 2019; 5:eaav0536. [PMID: 31149630 PMCID: PMC6541461 DOI: 10.1126/sciadv.aav0536] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 04/22/2019] [Indexed: 05/05/2023]
Abstract
Since its domestication in the Fertile Crescent ~8000 to 10,000 years ago, wheat has undergone a complex history of spread, adaptation, and selection. To get better insights into the wheat phylogeography and genetic diversity, we describe allele distribution through time using a set of 4506 landraces and cultivars originating from 105 different countries genotyped with a high-density single-nucleotide polymorphism array. Although the genetic structure of landraces is collinear to ancient human migration roads, we observe a reshuffling through time, related to breeding programs, with the appearance of new alleles enriched with structural variations that may be the signature of introgressions from wild relatives after 1960.
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Affiliation(s)
- François Balfourier
- GDEC, INRA, Université Clermont Auvergne, 5 chemin de Beaulieu, 63000 Clermont-Ferrand, France
- Corresponding author. (F.B.); (E.P.)
| | - Sophie Bouchet
- GDEC, INRA, Université Clermont Auvergne, 5 chemin de Beaulieu, 63000 Clermont-Ferrand, France
| | - Sandra Robert
- GDEC, INRA, Université Clermont Auvergne, 5 chemin de Beaulieu, 63000 Clermont-Ferrand, France
| | - Romain De Oliveira
- GDEC, INRA, Université Clermont Auvergne, 5 chemin de Beaulieu, 63000 Clermont-Ferrand, France
| | - Hélène Rimbert
- GDEC, INRA, Université Clermont Auvergne, 5 chemin de Beaulieu, 63000 Clermont-Ferrand, France
| | - Jonathan Kitt
- GDEC, INRA, Université Clermont Auvergne, 5 chemin de Beaulieu, 63000 Clermont-Ferrand, France
| | - Frédéric Choulet
- GDEC, INRA, Université Clermont Auvergne, 5 chemin de Beaulieu, 63000 Clermont-Ferrand, France
| | | | | | - Etienne Paux
- GDEC, INRA, Université Clermont Auvergne, 5 chemin de Beaulieu, 63000 Clermont-Ferrand, France
- Corresponding author. (F.B.); (E.P.)
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Yi Y, Zheng K, Ning S, Zhao L, Xu K, Hao M, Zhang L, Yuan Z, Liu D. The karyotype of Aegilops geniculata and its use to identify both addition and substitution lines of wheat. Mol Cytogenet 2019; 12:15. [PMID: 30984289 PMCID: PMC6446333 DOI: 10.1186/s13039-019-0428-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 03/26/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The annual allotetraploid species Aegilops geniculata harbors a number of traits relevant for wheat improvement. An effective cytogenetic method has yet to be developed to distinguish between each of its 14 chromosomes. RESULTS A fluorescence in situ hybridization (FISH) approach was adopted to describe the karyotype of Ae. geniculata. Each of its 14 chromosomes was unequivocally recognized using a cocktail of three probes, namely pTa-713, (AAC)5 and pTa71. FISH karyotyping was then used to detect and characterize selections from an Ae. geniculata × bread wheat wide cross of a chromosome 1Mg disomic addition line and three 4Mg(4B) substitution lines. The identity of the addition line was confirmed by the presence of Glu-M1, detected both using an SDS-PAGE separation of endosperm proteins and by applying a PCR assay directed at the Glu-M1 locus. The status of the substitution lines was validated by genotyping using a wheat single nucleotide polymorphism chip. CONCLUSION FISH karyotyping based on pTa-713, (AAC)5 and pTa71 will be useful for determining the contribution of Ae. geniculata to derivatives of an Ae. geniculata × wheat wide cross. SNP chip-based genotyping is effective for confirming the status of whole chromosome wheat/alien substitution lines.
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Affiliation(s)
- Yingjin Yi
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Ke Zheng
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Shunzong Ning
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Laibin Zhao
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Kai Xu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Ming Hao
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Lianquan Zhang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Zhongwei Yuan
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Dengcai Liu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
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Kwiatek MT, Kurasiak-Popowska D, Mikołajczyk S, Niemann J, Tomkowiak A, Weigt D, Nawracała J. Cytological markers used for identification and transfer of Aegilops spp. chromatin carrying valuable genes into cultivated forms of Triticum. COMPARATIVE CYTOGENETICS 2019; 13:41-59. [PMID: 30854169 PMCID: PMC6403195 DOI: 10.3897/compcytogen.v13i1.30673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 01/30/2019] [Indexed: 05/26/2023]
Abstract
There are many reports describing chromosome structure, organization and evolution within goatgrasses (Aegilops spp.). Chromosome banding and fluorescence in situ hybridization techniques are main methods used to identify Aegilops Linnaeus, 1753 chromosomes. These data have essential value considering the close genetic and genomic relationship of goatgrasses with wheat (Triticumaestivum Linnaeus, 1753) and triticale (× Triticosecale Wittmack, 1899). A key question is whether those protocols are useful and effective for tracking Aegilops chromosomes or chromosome segments in genetic background of cultivated cereals. This article is a review of scientific reports describing chromosome identification methods, which were applied for development of prebreeding plant material and for transfer of desirable traits into Triticum Linnaeus, 1753 cultivated species. Moreover, this paper is a resume of the most efficient cytomolecular markers, which can be used to follow the introgression of Aegilops chromatin during the breeding process.
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Affiliation(s)
- Michał T. Kwiatek
- Department of Genetics and Plant Breeding, Poznań University of Life Sciences, Dojazd 11, 60-632, Poznań, PolandPoznań University of Life SciencesPoznańPoland
| | - Danuta Kurasiak-Popowska
- Department of Genetics and Plant Breeding, Poznań University of Life Sciences, Dojazd 11, 60-632, Poznań, PolandPoznań University of Life SciencesPoznańPoland
| | - Sylwia Mikołajczyk
- Department of Genetics and Plant Breeding, Poznań University of Life Sciences, Dojazd 11, 60-632, Poznań, PolandPoznań University of Life SciencesPoznańPoland
| | - Janetta Niemann
- Department of Genetics and Plant Breeding, Poznań University of Life Sciences, Dojazd 11, 60-632, Poznań, PolandPoznań University of Life SciencesPoznańPoland
| | - Agnieszka Tomkowiak
- Department of Genetics and Plant Breeding, Poznań University of Life Sciences, Dojazd 11, 60-632, Poznań, PolandPoznań University of Life SciencesPoznańPoland
| | - Dorota Weigt
- Department of Genetics and Plant Breeding, Poznań University of Life Sciences, Dojazd 11, 60-632, Poznań, PolandPoznań University of Life SciencesPoznańPoland
| | - Jerzy Nawracała
- Department of Genetics and Plant Breeding, Poznań University of Life Sciences, Dojazd 11, 60-632, Poznań, PolandPoznań University of Life SciencesPoznańPoland
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Genetic analysis and location of a resistance gene for Puccinia striiformis f. sp. tritici in wheat cultivar Zhengmai 7698. J Genet 2018. [DOI: 10.1007/s12041-018-0986-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Juliana P, Singh RP, Singh PK, Poland JA, Bergstrom GC, Huerta-Espino J, Bhavani S, Crossa J, Sorrells ME. Genome-wide association mapping for resistance to leaf rust, stripe rust and tan spot in wheat reveals potential candidate genes. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:1405-1422. [PMID: 29589041 PMCID: PMC6004277 DOI: 10.1007/s00122-018-3086-6] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 03/12/2018] [Indexed: 05/19/2023]
Abstract
KEY MESSAGE Genome-wide association mapping in conjunction with population sequencing map and Ensembl plants was used to identify markers/candidate genes linked to leaf rust, stripe rust and tan spot resistance in wheat. Leaf rust (LR), stripe rust (YR) and tan spot (TS) are some of the important foliar diseases in wheat (Triticum aestivum L.). To identify candidate resistance genes for these diseases in CIMMYT's (International Maize and Wheat Improvement Center) International bread wheat screening nurseries, we used genome-wide association studies (GWAS) in conjunction with information from the population sequencing map and Ensembl plants. Wheat entries were genotyped using genotyping-by-sequencing and phenotyped in replicated trials. Using a mixed linear model, we observed that seedling resistance to LR was associated with 12 markers on chromosomes 1DS, 2AS, 2BL, 3B, 4AL, 6AS and 6AL, and seedling resistance to TS was associated with 14 markers on chromosomes 1AS, 2AL, 2BL, 3AS, 3AL, 3B, 6AS and 6AL. Seedling and adult plant resistance (APR) to YR were associated with several markers at the distal end of chromosome 2AS. In addition, YR APR was also associated with markers on chromosomes 2DL, 3B and 7DS. The potential candidate genes for these diseases included several resistance genes, receptor-like serine/threonine-protein kinases and defense-related enzymes. However, extensive LD in wheat that decays at about 5 × 107 bps, poses a huge challenge for delineating candidate gene intervals and candidates should be further mapped, functionally characterized and validated. We also explored a segment on chromosome 2AS associated with multiple disease resistance and identified seventeen disease resistance linked genes. We conclude that identifying candidate genes linked to significant markers in GWAS is feasible in wheat, thus creating opportunities for accelerating molecular breeding.
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Affiliation(s)
- Philomin Juliana
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA
| | - Ravi P Singh
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, Postal 6-641, 06600, Mexico, DF, Mexico
| | - Pawan K Singh
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, Postal 6-641, 06600, Mexico, DF, Mexico
| | - Jesse A Poland
- Wheat Genetics Resource Center, Department of Plant Pathology and Department of Agronomy, Kansas State University, Manhattan, KS, 66506, USA
| | - Gary C Bergstrom
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA
| | - Julio Huerta-Espino
- Campo Experimental Valle de México INIFAP, 56230, Chapingo, Edo. de México, Mexico
| | - Sridhar Bhavani
- CIMMYT, ICRAF house, United Nations Avenue, Gigiri, Village Market, Nairobi, 00621, Kenya
| | - Jose Crossa
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, Postal 6-641, 06600, Mexico, DF, Mexico
| | - Mark E Sorrells
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA.
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36
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Jiang B, Liu T, Li H, Han H, Li L, Zhang J, Yang X, Zhou S, Li X, Liu W. Physical Mapping of a Novel Locus Conferring Leaf Rust Resistance on the Long Arm of Agropyron cristatum Chromosome 2P. FRONTIERS IN PLANT SCIENCE 2018; 9:817. [PMID: 29971077 PMCID: PMC6018490 DOI: 10.3389/fpls.2018.00817] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 05/28/2018] [Indexed: 05/09/2023]
Abstract
Wheat leaf rust is one of the most common wheat diseases worldwide and can cause up to 40% wheat yield loss. To combat the growth and spread of leaf rust disease, continual exploration and identification of new and effective resistance genes are needed. Here, we report for the first time a locus conferring leaf rust resistance located on the long arm of Agropyron cristatum chromosome 2P in Triticum aestivum-A. cristatum 2P translocation lines. This study used 50 leaf rust races, including two Chinese major dominant leaf rust races, named by THT and PHT, and other 48 different leaf rust races collected from 11 provinces, 1autonomous region and 1 municipality of China to test the resistance to T. aestivum-A. cristatum 2P chromosome translocation lines and their backcross populations, the results indicated that the novel leaf rust resistance locus was immune or nearly immune to all tested leaf rust races. Four long arm translocation lines with different breakpoints of A. cristatum chromosome 2PL and their backcross populations were tested with leaf rust race THT at the seedling and adult stages and genotyped with 2P-specific STS markers. The results showed that the novel leaf rust resistance locus of the T. aestivum-A. cristatum 2P translocation lines was located in the chromosomal bin FL 0.66-0.86 of 2PL. Therefore, T. aestivum-A. cristatum 2P chromosome translocation lines conferring leaf rust resistance locus could provide a novel disease-resistance resource for future wheat breeding programs.
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Affiliation(s)
- Bo Jiang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Taiguo Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Huanhuan Li
- College of Life Sciences, Henan Agricultural University, Zhengzhou, China
| | - Haiming Han
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lihui Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jinpeng Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xinming Yang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shenghui Zhou
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiuquan Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Weihua Liu
- 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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Xing L, Hu P, Liu J, Witek K, Zhou S, Xu J, Zhou W, Gao L, Huang Z, Zhang R, Wang X, Chen P, Wang H, Jones JDG, Karafiátová M, Vrána J, Bartoš J, Doležel J, Tian Y, Wu Y, Cao A. Pm21 from Haynaldia villosa Encodes a CC-NBS-LRR Protein Conferring Powdery Mildew Resistance in Wheat. MOLECULAR PLANT 2018; 11:874-878. [PMID: 29567451 DOI: 10.1016/j.molp.2018.02.013] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/28/2018] [Accepted: 02/28/2018] [Indexed: 05/18/2023]
Affiliation(s)
- Liping Xing
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China.
| | - Ping Hu
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Jiaqian Liu
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Kamil Witek
- The Sainsbury Laboratory, Norwich Research Park, Norwich NR4 7UH, UK
| | - Shuang Zhou
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Jiefei Xu
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Weihao Zhou
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Li Gao
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Zhenpu Huang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Ruiqi Zhang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Xiue Wang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Peidu Chen
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Haiyan Wang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | | | - Miroslava Karafiátová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371 Olomouc, Czech Republic
| | - Jan Vrána
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371 Olomouc, Czech Republic
| | - Jan Bartoš
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371 Olomouc, Czech Republic
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371 Olomouc, Czech Republic
| | - Yuanchun Tian
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Yufeng Wu
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China
| | - Aizhong Cao
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China.
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Chao K, Yang J, Liu H, Jing J, Li Q, Wang B, Ma D. Genetic and Physical Mapping of a Putative Leymus mollis-Derived Stripe Rust Resistance Gene on Wheat Chromosome 4A. PLANT DISEASE 2018; 102:1001-1007. [PMID: 30673382 DOI: 10.1094/pdis-05-17-0671-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Wheat stripe rust is one of the most damaging diseases of wheat worldwide. The wheat-Leymus mollis introgression line M8664-3 exhibits all-stage resistance to Chinese stripe rust races. Genetic analysis of stripe rust resistance was performed by crossing M8664-3 with the susceptible line Mingxian169. Analysis of the disease resistance of F2 and F2:3 populations revealed that its resistance to Chinese stripe rust race 33 (CYR33) is controlled by a single dominant gene, temporarily designated as YrM8664-3. Genetic and physical mapping showed that YrM8664-3 is located in bin 4AL13-0.59-0.66 close to 4AL12-0.43-0.59 on chromosome 4AL and is flanked by single-nucleotide polymorphism markers AX111655681 and AX109496237 with genetic distances of 5.3 and 2.3 centimorgans, respectively. Resistance spectrum and position analyses indicated that YrM8664-3 may be a novel gene. Molecular detection using the markers linked to YrM8664-3 with wheat varieties commonly cultivated and wheat-L. mollis-derived lines showed that YrM8664-3 is also present in other wheat-L. mollis introgression lines but absent in commercial common wheat cultivars. Thus, YrM8664-3 is a potentially valuable source of stripe rust resistance for breeding.
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Affiliation(s)
- Kaixiang Chao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jinye Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Huan Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jinxue Jing
- 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
| | - Dongfang Ma
- Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, Hubei, China
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Iefimenko TS, Antonyuk MZ, Martynenko VS, Navalihina AG, Ternovska TK. Introgression of Aegilops mutica genes into common wheat genome. CYTOL GENET+ 2018. [DOI: 10.3103/s0095452718010048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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40
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Qureshi N, Bariana HS, Zhang P, McIntosh R, Bansal UK, Wong D, Hayden MJ, Dubcovsky J, Shankar M. Genetic Relationship of Stripe Rust Resistance Genes Yr34 and Yr48 in Wheat and Identification of Linked KASP Markers. PLANT DISEASE 2018; 102:413-420. [PMID: 30673523 DOI: 10.1094/pdis-08-17-1144-re] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The Australian continent was free from wheat stripe rust caused by Puccinia striiformis f. sp. tritici until exotic incursions occurred in 1979 and 2002. The 2002 incursion enabled the identification of a new stripe rust resistance gene (Yr34) in the advanced breeding line WAWHT2046. In this study, we developed and validated markers closely linked with Yr34, which is located in the distal region in the long arm of chromosome 5A. Four kompetitive allele-specific polymerase chain reaction (KASP) and three sequence-tagged site (STS) markers derived from the International Wheat Genome Sequencing Consortium RefSeq v1.0 scaffold-77836 cosegregated with Yr34. Markers sun711, sun712, sun725, sunKASP_109, and sunKASP_112 were shown to be suitable for marker-assisted selection in a validation panel of 71 Australian spring wheat genotypes, with the exception of cultivar Orion that carried the Yr34-linked alleles for sunKASP_109 and sunKASP_112. Markers previously reported to be linked with adult plant stripe rust resistance gene Yr48 also cosegregated with Yr34. Wheat genotypes carrying Yr34 and Yr48 produced identical haplotypes for the Yr34-linked markers identified in this study and those previously reported to be linked with Yr48. Phenotypic testing of genotypes carrying Yr34 and Yr48 showed that both genes conferred similar seedling responses to pre-2002 and post-2002 P. striiformis f. sp. tritici pathotypes. Further testing of 600 F2 plants from a cross between WAWHT2046 and RIL143 (Yr48) with P. striiformis f. sp. tritici pathotype 134 E16A+Yr17+Yr27+ failed to reveal any susceptible segregants. Our results strongly suggest that Yr34 and Yr48 are the same gene, and that Yr48 should be considered a synonym of Yr34.
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Affiliation(s)
- N Qureshi
- The University of Sydney Plant Breeding Institute, Faculty of Science, Cobbitty, NSW 2570, Australia
| | - H S Bariana
- The University of Sydney Plant Breeding Institute, Faculty of Science, Cobbitty, NSW 2570, Australia
| | - P Zhang
- The University of Sydney Plant Breeding Institute, Faculty of Science, Cobbitty, NSW 2570, Australia
| | - R McIntosh
- The University of Sydney Plant Breeding Institute, Faculty of Science, Cobbitty, NSW 2570, Australia
| | - U K Bansal
- The University of Sydney Plant Breeding Institute, Faculty of Science, Cobbitty, NSW 2570, Australia
| | - D Wong
- Department of Economic Development, Jobs, Transport and Resources, AgriBio Centre, La Trobe Research and Development Park, Bundoora, VIC 3083, Australia
| | - M J Hayden
- Department of Economic Development, Jobs, Transport and Resources, AgriBio Centre, La Trobe Research and Development Park, Bundoora, VIC 3083, Australia
| | - J Dubcovsky
- Department of Plant Sciences, University of California, Davis 95616
| | - M Shankar
- Agriculture and Food, Department of Primary Industries and Regional Development, South Perth, WA 6151, Australia; and School of Agriculture and Environment, University of Western Australia, Crawley WA 6009, Australia
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Niranjana M. Gametocidal genes of Aegilops: segregation distorters in wheat-Aegilops wide hybridization. Genome 2017; 60:639-647. [PMID: 28654760 DOI: 10.1139/gen-2017-0023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aegilops is a genus belonging to the family Poaceace, which have played an indispensible role in the evolution of bread wheat and continues to do so by transferring genes by wide hybridization. Being the secondary gene pool of wheat, gene transfer from Aegilops poses difficulties and segregation distortion is common. Gametocidal genes are the most well characterized class of segregation distorters reported in interspecific crosses of wheat with Aegilops. These "selfish" genetic elements ensure their preferential transmission to progeny at the cost of gametes lacking them without providing any phenotypic benefits to the plant, thereby causing a proportional reduction in fertility. Gametocidal genes (Gc) have been reported in different species of Aegilops belonging to the sections Aegilops (Ae. geniculata and Ae. triuncialis), Cylindropyrum (Ae. caudata and Ae. cylindrica), and Sitopsis (Ae. longissima, Ae. sharonensis, and Ae. speltoides). Gametocidal activity is mostly confined to 2, 3, and 4 homeologous groups of C, S, S1, Ssh, and Mg genomes. Removal of such genes is necessary for successful alien gene introgression and can be achieved by mutagenesis or allosyndetic pairing. However, there are some instances where Gc genes are constructively utilized for development of deletion stocks in wheat, improving genetic variability and chromosome engineering.
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Affiliation(s)
- M Niranjana
- Indian Agricultural Research Institute, New Delhi, India.,Indian Agricultural Research Institute, New Delhi, India
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Toor PI, Kaur S, Bansal M, Yadav B, Chhuneja P. Mapping of stripe rust resistance gene in an Aegilops caudate introgression line in wheat and its genetic association with leaf rust resistance. J Genet 2017; 95:933-938. [PMID: 27994192 DOI: 10.1007/s12041-016-0718-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A pair of stripe rust and leaf rust resistance genes was introgressed from Aegilops caudata, a nonprogenitor diploid species with the CC genome, to cultivated wheat. Inheritance and genetic mapping of stripe rust resistance gene in backcrossrecombinant inbred line (BC-RIL) population derived from the cross of a wheat-Ae. caudata introgression line (IL) T291- 2(pau16060) with wheat cv. PBW343 is reported here. Segregation of BC-RILs for stripe rust resistance depicted a single major gene conditioning adult plant resistance (APR) with stripe rust reaction varying from TR-20MS in resistant RILs signifying the presence of some minor genes as well. Genetic association with leaf rust resistance revealed that two genes are located at a recombination distance of 13%. IL T291-2 had earlier been reported to carry introgressions on wheat chromosomes 2D, 3D, 4D, 5D, 6D and 7D. Genetic mapping indicated the introgression of stripe rust resistance gene on wheat chromosome 5DS in the region carrying leaf rust resistance gene LrAc, but as an independent introgression. Simple sequence repeat (SSR) and sequence-tagged site (STS) markers designed from the survey sequence data of 5DS enriched the target region harbouring stripe and leaf rust resistance genes. Stripe rust resistance locus, temporarily designated as YrAc, mapped at the distal most end of 5DS linked with a group of four colocated SSRs and two resistance gene analogue (RGA)-STS markers at a distance of 5.3 cM. LrAc mapped at a distance of 9.0 cM from the YrAc and at 2.8 cM from RGA-STS marker Ta5DS_2737450, YrAc and LrAc appear to be the candidate genes for marker-assisted enrichment of the wheat gene pool for rust resistance.
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Affiliation(s)
- Puneet Inder Toor
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana 141 004, India.
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Qureshi N, Bariana H, Forrest K, Hayden M, Keller B, Wicker T, Faris J, Salina E, Bansal U. Fine mapping of the chromosome 5B region carrying closely linked rust resistance genes Yr47 and Lr52 in wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2017; 130:495-504. [PMID: 27866228 DOI: 10.1007/s00122-016-2829-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 11/12/2016] [Indexed: 05/26/2023]
Abstract
Fine mapping of Yr47 and Lr52 in chromosome arm 5BS of wheat identified close linkage of the marker sun180 to both genes and its robustness for marker-assisted selection was demonstrated. The widely effective and genetically linked rust resistance genes Yr47 and Lr52 have previously been mapped in the short arm of chromosome 5B in two F3 populations (Aus28183/Aus27229 and Aus28187/Aus27229). The Aus28183/Aus27229 F3 population was advanced to generate an F6 recombinant inbred line (RIL) population to identify markers closely linked with Yr47 and Lr52. Diverse genomic resources including flow-sorted chromosome survey sequence contigs representing the orthologous region in Brachypodium distachyon, the physical map of chromosome arm 5BS, expressed sequence tags (ESTs) located in the 5BS6-0.81-1.00 deletion bin and resistance gene analog contigs of chromosome arm 5BS were used to develop markers to saturate the target region. Selective genotyping was also performed using the iSelect 90 K Infinium wheat SNP assay. A set of SSR, STS, gene-based and SNP markers were developed and genotyped on the Aus28183/Aus27229 RIL population. Yr47 and Lr52 are genetically distinct genes that mapped 0.4 cM apart in the RIL population. The SSR marker sun180 co-segregated with Lr52 and mapped 0.4 cM distal to Yr47. In a high resolution mapping population of 600 F2 genotypes Yr47 and Lr52 mapped 0.2 cM apart and marker sun180 was placed 0.4 cM distal to Lr52. The amplification of a different sun180 amplicon (195 bp) than that linked with Yr47 and Lr52 (200 bp) in 204 diverse wheat genotypes demonstrated its robustness for marker-assisted selection of these genes.
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Affiliation(s)
- Naeela Qureshi
- Faculty of Agriculture, Food and Natural Resources, The University of Sydney Plant Breeding Institute, Private Bag 4011, Narellan, NSW, 2567, Australia
| | - Harbans Bariana
- Faculty of Agriculture, Food and Natural Resources, The University of Sydney Plant Breeding Institute, Private Bag 4011, Narellan, NSW, 2567, Australia
| | - Kerrie Forrest
- Department of Economic Development, Jobs, Transport and Resources, La Trobe University AgriBio, Bundoora, VIC, 3083, Australia
| | - Matthew Hayden
- Department of Economic Development, Jobs, Transport and Resources, La Trobe University AgriBio, Bundoora, VIC, 3083, Australia
| | - Beat Keller
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
| | - Thomas Wicker
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
| | - Justin Faris
- USDA-ARS Cereal Crops Research Unit, Red River Valley Agricultural Research Center, 1605 Albrecht BLVD, Fargo, ND, 58102-2765, USA
| | - Elena Salina
- Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia
| | - Urmil Bansal
- Faculty of Agriculture, Food and Natural Resources, The University of Sydney Plant Breeding Institute, Private Bag 4011, Narellan, NSW, 2567, Australia.
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Orsenigo S, Guzzon F, Abeli T, Rossi G, Vagge I, Balestrazzi A, Mondoni A, Müller JV. Comparative germination responses to water potential across different populations of Aegilops geniculata and cultivar varieties of Triticum durum and Triticum aestivum. PLANT BIOLOGY (STUTTGART, GERMANY) 2017; 19:165-171. [PMID: 27917571 DOI: 10.1111/plb.12528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 11/28/2016] [Indexed: 06/06/2023]
Abstract
Crop Wild Relatives are often used to improve crop quality and yields because they contain genetically important traits that can contribute to stress resistance and adaptation. Seed germination of different populations of Aegilops geniculata Roth collected along a latitudinal gradient was studied under different drought stress in order to find populations suitable for improving drought tolerance in wheat. Different accessions of Aegilops neglecta Req. ex Bertol., Triticum aestivum L. and T. durum Desf. were used as comparison. Under full hydration, germination was high in all populations, but increasing drought stress led to reduced and delayed germination. Significant differences in final germination and mean time to germinate were detected among populations. Wheat, durum wheat and the southern population of Ae. geniculata were not significantly affected by drought stress, germinating similarly under all treatments. However, seed germination of the northern populations of Ae. geniculata was significantly reduced under high water stress treatment. Differences between populations of the same species could not be explained by annual rainfall across populations' distributions, but by rainfall during seed development and maturation. Differences in the germination responses to drought found here highlight the importance of source populations as criteria for genotype selection for pre-breeders.
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Affiliation(s)
- S Orsenigo
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, University of Milan, Milan, Italy
| | - F Guzzon
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
| | - T Abeli
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
| | - G Rossi
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
| | - I Vagge
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, University of Milan, Milan, Italy
| | - A Balestrazzi
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, Pavia, Italy
| | - A Mondoni
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
| | - J V Müller
- Millennium Seed Bank, Conservation Science Department, Royal Botanic Gardens Kew, Wakehurst Place, UK
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Turner MK, Kolmer JA, Pumphrey MO, Bulli P, Chao S, Anderson JA. Association mapping of leaf rust resistance loci in a spring wheat core collection. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2017; 130:345-361. [PMID: 27807611 DOI: 10.1007/s00122-016-2815-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 10/18/2016] [Indexed: 05/02/2023]
Abstract
We identified 15 potentially novel loci in addition to previously characterized leaf rust resistance genes from 1032 spring wheat accessions. Targeted AM subset panels were instrumental in revealing interesting loci. Leaf rust is a common disease of wheat, consistently reducing yields in many wheat-growing regions of the world. Although fungicides are commonly applied to wheat in the United States (US), genetic resistance can provide less expensive, yet effective control of the disease. Our objectives were to map leaf rust resistance genes in a large core collection of spring wheat accessions selected from the United States Department of Agriculture-Agricultural Research Service National Small Grains Collection (NSGC), determine whether previously characterized race-nonspecific resistance genes could be identified with our panel, and evaluate the use of targeted panels to identify seedling and adult plant resistance (APR) genes. Association mapping (AM) detected five potentially novel leaf rust resistance loci on chromosomes 2BL, 4AS, and 5DL at the seedling stage, and 2DL and 7AS that conditioned both seedling and adult plant resistance. In addition, ten potentially novel race-nonspecific resistance loci conditioned field resistance and lacked seedling resistance. Analyses of targeted subsets of the accessions identified additional loci not associated with resistance in the complete core panel. Using molecular markers, we also confirmed the presence and effectiveness of the race-nonspecific genes Lr34, Lr46, and Lr67 in our panel. Although most of the accessions in this study were susceptible to leaf rust in field and seedling tests, many resistance loci were identified with AM. Through the use of targeted subset panels, more loci were identified than in the larger core panels alone.
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Affiliation(s)
- M Kathryn Turner
- Department of Agronomy and Plant Genetics, University of Minnesota, St Paul, MN, USA
- The Land Institute, Salina, KS, USA
| | - James A Kolmer
- USDA-ARS, Cereal Disease Laboratory, University of Minnesota, St Paul, MN, USA
- Department of Plant Pathology, University of Minnesota, St Paul, MN, USA
| | - Michael O Pumphrey
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, USA
| | - Peter Bulli
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, USA
| | - Shiaoman Chao
- USDA ARS Genotyping Laboratory, Biosciences Research Laboratory, Fargo, ND, USA
| | - James A Anderson
- Department of Agronomy and Plant Genetics, University of Minnesota, St Paul, MN, USA.
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46
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Bansal M, Kaur S, Dhaliwal HS, Bains NS, Bariana HS, Chhuneja P, Bansal UK. Mapping of Aegilops umbellulata-derived leaf rust and stripe rust resistance loci in wheat. PLANT PATHOLOGY 2017; 66:38-44. [PMID: 0 DOI: 10.1111/ppa.12549] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- M. Bansal
- School of Agricultural Biotechnology; Punjab Agricultural University; Ludhiana Punjab 141 004 India
| | - S. Kaur
- School of Agricultural Biotechnology; Punjab Agricultural University; Ludhiana Punjab 141 004 India
| | - H. S. Dhaliwal
- School of Agricultural Biotechnology; Punjab Agricultural University; Ludhiana Punjab 141 004 India
| | - N. S. Bains
- Department of Plant Breeding and Genetics; Punjab Agricultural University; Ludhiana Punjab 141 004 India
| | - H. S. Bariana
- University of Sydney Plant Breeding Institute-Cobbitty; PMB 4011 Narellan NSW 2567 Australia
| | - P. Chhuneja
- School of Agricultural Biotechnology; Punjab Agricultural University; Ludhiana Punjab 141 004 India
| | - U. K. Bansal
- University of Sydney Plant Breeding Institute-Cobbitty; PMB 4011 Narellan NSW 2567 Australia
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47
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Koo DH, Liu W, Friebe B, Gill BS. Homoeologous recombination in the presence of Ph1 gene in wheat. Chromosoma 2016; 126:531-540. [PMID: 27909815 DOI: 10.1007/s00412-016-0622-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 11/17/2016] [Accepted: 11/21/2016] [Indexed: 11/28/2022]
Abstract
A crossover (CO) and its cytological signature, the chiasma, are major features of eukaryotic meiosis. The formation of at least one CO/chiasma between homologous chromosome pairs is essential for accurate chromosome segregation at the first meiotic division and genetic recombination. Polyploid organisms with multiple sets of homoeologous chromosomes have evolved additional mechanisms for the regulation of CO/chiasma. In hexaploid wheat (2n = 6× = 42), this is accomplished by pairing homoeologous (Ph) genes, with Ph1 having the strongest effect on suppressing homoeologous recombination and homoeologous COs. In this study, we observed homoeologous COs between chromosome 5Mg of Aegilops geniculata and 5D of wheat in plants where Ph1 was fully active, indicating that chromosome 5Mg harbors a homoeologous recombination promoter factor(s). Further cytogenetic analysis, with different 5Mg/5D recombinants, showed that the homoeologous recombination promoting factor(s) may be located in proximal regions of 5Mg. In addition, we observed a higher frequency of homoeologous COs in the pericentromeric region between chromosome combination of rec5Mg#2S·5Mg#2L and 5D compared to 5Mg#1/5D, which may be caused by a small terminal region of 5DL homology present in chromosome rec5Mg#2. The genetic stocks reported here will be useful for analyzing the mechanism of Ph1 action and the nature of homoeologous COs.
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Affiliation(s)
- Dal-Hoe Koo
- Wheat Genetics Resource Center, Department of Plant Pathology, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA
| | - Wenxuan Liu
- Wheat Genetics Resource Center, Department of Plant Pathology, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA.,Laboratory of Cell and Chromosome Engineering, College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Bernd Friebe
- Wheat Genetics Resource Center, Department of Plant Pathology, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA.
| | - Bikram S Gill
- Wheat Genetics Resource Center, Department of Plant Pathology, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA
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Lu Y, Yao M, Zhang J, Song L, Liu W, Yang X, Li X, Li L. Genetic analysis of a novel broad-spectrum powdery mildew resistance gene from the wheat-Agropyron cristatum introgression line Pubing 74. PLANTA 2016; 244:713-23. [PMID: 27125388 DOI: 10.1007/s00425-016-2538-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 04/20/2016] [Indexed: 05/24/2023]
Abstract
A novel broad-spectrum powdery mildew resistance gene PmPB74 was identified in wheat- Agropyron cristatum introgression line Pubing 74. Development of wheat cultivars with broad-spectrum, durable resistance to powdery mildew has been restricted by lack of superior genetic resources. In this study, a wheat-A. cristatum introgression line Pubing 74, originally selected from a wide cross between the common wheat cultivar Fukuhokomugi (Fukuho) and Agropyron cristatum (L.) Gaertn (2n = 4x = 28; genome PPPP), displayed resistance to powdery mildew at both the seedling and adult stages. The putative alien chromosomal fragment in Pubing 74 was below the detection limit of genomic in situ hybridization (GISH), but evidence for other non-GISH-detectable introgressions was provided by the presence of three STS markers specific to A. cristatum. Genetic analysis indicated that Pubing 74 carried a single dominant gene for powdery mildew resistance, temporarily designated PmPB74. Molecular mapping showed that PmPB74 was located on wheat chromosome arm 5DS, and flanked by markers Xcfd81 and HRM02 at genetic distances of 2.5 and 1.7 cM, respectively. Compared with other lines with powdery mildew resistance gene(s) on wheat chromosome arm 5DS, Pubing 74 was resistant to all 28 Blumeria graminis f. sp tritici (Bgt) isolates from different wheat-producing regions of northern China. Allelism tests indicated that PmPB74 was not allelic to PmPB3558 or Pm2. Our work showed that PmPB74 is a novel gene with broad resistance to powdery mildew, and hence will be helpful in broadening the genetic basis of powdery mildew resistance in wheat.
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Affiliation(s)
- Yuqing Lu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Miaomiao Yao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jinpeng Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Liqiang Song
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Weihua Liu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xinming Yang
- 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
| | - Lihui Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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Hou L, Jia J, Zhang X, Li X, Yang Z, Ma J, Guo H, Zhan H, Qiao L, Chang Z. Molecular Mapping of the Stripe Rust Resistance Gene Yr69 on Wheat Chromosome 2AS. PLANT DISEASE 2016; 100:1717-1724. [PMID: 30686226 DOI: 10.1094/pdis-05-15-0555-re] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Wheat is one of the major food crops in the world. Stripe rust, caused by Puccinia striiformis f. sp. tritici, is an economically important disease that affects wheat worldwide. The discovery of novel resistance genes and the deployment of effectively resistant cultivars are important for the ongoing control of wheat stripe rust and the maintenance of the agricultural productivity of wheat. CH7086, a new stripe rust-resistant wheat introgression line, was selected by crossing susceptible cultivars with the resistant Thinopyrum ponticum-derived partial amphiploid Xiaoyan 7430. The resistance of CH7086 is effective against all current Chinese P. striiformis f. sp. tritici races. CH7086 was crossed with the stripe rust-susceptible cultivars to develop F1, F2, F3, and BC1 populations for genetic analysis. Segregation in the F2 and BC1 populations and F2:3 lines were tested for resistance against the P. striiformis f. sp. tritici race CYR32. This test showed that CH7086 carries a single dominant gene for stripe rust resistance, which was temporarily designated YrCH86. The closest of the eight simple sequence repeat (SSR) and expressed sequence tag-SSR markers flanking the locus were X2AS33, which is 1.9 cM distal, and Xmag3807, which is 3.1 cM proximal. The resistance gene and its polymorphic markers were placed in deletion bin 2AS-0.78-1.00 using the 'Chinese Spring' nullisomic-tetrasomic, ditelosomic, and deletion lines. The tests of both allelism and resistance specificity suggested that the resistance gene found in CH7086 was not Yr17, which was the only current formally named Yr gene on chromosome 2AS. Thus, YrCH86 appeared to be a new locus and was permanently designated Yr69.
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Affiliation(s)
- Liyuan Hou
- College of Life Science, Shanxi University, Taiyuan 030006, Shanxi, China
| | - Juqing Jia
- College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China
| | - Xiaojun Zhang
- Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, Shanxi, China, and Shanxi Key Laboratory for Crop Genetics and Gene Improvement, Taiyuan 030031, Shanxi, China
| | - Xin Li
- Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, Shanxi, China, and Shanxi Key Laboratory for Crop Genetics and Gene Improvement, Taiyuan 030031, Shanxi, China
| | - Zujun Yang
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China
| | - Jian Ma
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Huijuan Guo
- Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, Shanxi, China, and Shanxi Key Laboratory for Crop Genetics and Gene Improvement, Taiyuan 030031, Shanxi, China
| | - Haixian Zhan
- Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, Shanxi, China, and Shanxi Key Laboratory for Crop Genetics and Gene Improvement, Taiyuan 030031, Shanxi, China
| | - Linyi Qiao
- Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, Shanxi, China, and Shanxi Key Laboratory for Crop Genetics and Gene Improvement, Taiyuan 030031, Shanxi, China
| | - Zhijian Chang
- Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, Shanxi, China, and Shanxi Key Laboratory for Crop Genetics and Gene Improvement, Taiyuan 030031, Shanxi, China
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Qi W, Tang Y, Zhu W, Li D, Diao C, Xu L, Zeng J, Wang Y, Fan X, Sha L, Zhang H, Zheng Y, Zhou Y, Kang H. Molecular cytogenetic characterization of a new wheat-rye 1BL•1RS translocation line expressing superior stripe rust resistance and enhanced grain yield. PLANTA 2016; 244:405-16. [PMID: 27084678 DOI: 10.1007/s00425-016-2517-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 04/01/2016] [Indexed: 05/08/2023]
Abstract
A new wheat-rye 1BL•1RS translocation line, with the characteristics of superior stripe rust resistance and high thousand-kernel weight and grain number per spike, was developed and identified from progenies of wheat-rye- Psathyrostachys huashanica trigeneric hybrids. The wheat-rye 1BL•1RS translocation line from Petkus rye has contributed substantially to the world wheat production. However, due to extensive growing of cultivars with disease resistance genes from short arm of rye chromosome 1R and coevolution of pathogen virulence and host resistance, these cultivars successively lost resistance to pathogens. In this study, a new wheat-rye line K13-868, derived from the progenies of wheat-rye-Psathyrostachys huashanica trigeneric hybrids, was identified and analyzed using fluorescence in situ hybridization (FISH), genomic in situ hybridization (GISH), acid polyacrylamide gel electrophoresis (A-PAGE), and molecular markers. Cytological studies indicated that the mean chromosome configuration of K13-868 at meiosis was 2n = 42 = 0.14 I + 18.78 II (ring) + 2.15 II (rod). Sequential FISH and GISH results demonstrated that K13-868 was a compensating wheat-rye 1BL•1RS Robertsonian translocation line. Acid PAGE analysis revealed that clear specific bands of rye 1RS were expressed in K13-868. Simple sequence repeat (SSR) and rye 1RS-specific markers ω-sec-p1/ω-sec-p2 and O-SEC5'-A/O-SEC3'-R suggested that the 1BS arm of wheat had been substituted by the 1RS arm of rye. At the seedling and adult growth stage, compared with its recurrent wheat parent SM51 and six other wheat cultivars containing the 1RS arm in southwestern China, K13-868 showed high levels of resistance to stripe rust (Puccinia striiformis f. sp. tritici, Pst) pathogens prevalent in China, which are virulent to Yr10 and Yr24/Yr26. In addition, K13-868 expresses higher thousand-kernel weight and more grain number per spike than these controls in two growing seasons, suggesting that this line may carry yield-related genes of rye. This translocation line, with significant characteristics of resistance to stripe rust and high thousand-kernel weight and grain number per spike, could be utilized as a valuable germplasm for wheat improvement.
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Affiliation(s)
- Weiliang Qi
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Yao Tang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Wei Zhu
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Daiyan Li
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Chengdou Diao
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Lili Xu
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Jian Zeng
- College of Resources, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Yi Wang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Xing Fan
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Lina Sha
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Haiqin Zhang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Youliang Zheng
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Yonghong Zhou
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Houyang Kang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China.
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