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Ren T, Jiang Q, Sun Z, Ren Z, Tan F, Yang W, Li Z. Development and Characterization of Novel Wheat-Rye 1RS·1BL Translocation Lines with High Resistance to Puccinia striiformis f. sp. tritici. PHYTOPATHOLOGY 2022; 112:1310-1315. [PMID: 34982573 DOI: 10.1094/phyto-07-21-0313-r] [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
Wheat-rye 1RS·1BL translocations from 'Petkus' rye have contributed substantially to wheat production worldwide with their great disease resistance and yield traits. However, the resistance genes on the 1RS chromosomes have completely lost their resistance to newly emerged pathogens. Rye could widen the variation of 1RS as a naturally cross-pollinated related species of wheat. In this study, we developed three new 1RS·1BL translocation lines by crossing rye inbred line BL1, selected from Chinese landrace rye Baili, with wheat cultivar Mianyang11. These three new translocation lines exhibited high resistance to the most virulent and frequently occurring stripe rust pathotypes and showed high resistance in the field, where stripe rust outbreaks have been most severe in China. One new gene for stripe rust resistance, located on 1RS of the new translocation lines, is tentatively named YrRt1054. YrRt1054 confers resistance to Puccinia striiformis f. sp. tritici pathotypes that are virulent toward Yr9 and YrCn17. This new resistance gene, YrRt1054, is available for wheat improvement programs. The present study indicated that rye cultivars may carry additional untapped variation as potential sources of resistance.
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Affiliation(s)
- Tianheng Ren
- Agronomy College, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan 611130, China
- Provincial Key Laboratory for Plant Genetics and Breeding, Wenjiang, Chengdu, Sichuan 611130, China
| | - Qing Jiang
- Agronomy College, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan 611130, China
- Provincial Key Laboratory for Plant Genetics and Breeding, Wenjiang, Chengdu, Sichuan 611130, China
| | - Zixin Sun
- Agronomy College, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan 611130, China
- Provincial Key Laboratory for Plant Genetics and Breeding, Wenjiang, Chengdu, Sichuan 611130, China
| | - Zhenglong Ren
- Agronomy College, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan 611130, China
- Provincial Key Laboratory for Plant Genetics and Breeding, Wenjiang, Chengdu, Sichuan 611130, China
| | - Feiquan Tan
- Agronomy College, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan 611130, China
- Provincial Key Laboratory for Plant Genetics and Breeding, Wenjiang, Chengdu, Sichuan 611130, China
| | - Wenyi Yang
- Agronomy College, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan 611130, China
- Provincial Key Laboratory for Plant Genetics and Breeding, Wenjiang, Chengdu, Sichuan 611130, China
| | - Zhi Li
- Agronomy College, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan 611130, China
- Provincial Key Laboratory for Plant Genetics and Breeding, Wenjiang, Chengdu, Sichuan 611130, China
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Molecular Cytogenetic Characterization of Novel 1RS.1BL Translocation and Complex Chromosome Translocation Lines with Stripe Rust Resistance. Int J Mol Sci 2022; 23:ijms23052731. [PMID: 35269872 PMCID: PMC8910991 DOI: 10.3390/ijms23052731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/18/2022] [Accepted: 02/25/2022] [Indexed: 12/03/2022] Open
Abstract
Rye is the most important source for the genetic improvement of wheat. In this study, two stable wheat-rye primary 1RS.1BL translocation lines, RT855-13 and RT855-14, were selected and identified by acid polyacrylamide gel electrophoresis (A-PAGE), co-dominant PCR, and multi-color fluorescence in situ hybridization (MC-FISH) from the progeny of the crossing of the wheat cultivar Mianyang11 and a Chinese rye Weining. When more than two independent, simple reciprocal translocations are involved in a carrier, they are defined as complex chromosome translocations (CCT). The MC-FISH results also indicated that CCT occurred in RT855-13; namely that, besides 1RS.1BL translocation chromosomes, there are other two pairs of balanced reciprocal translocations. It was demonstrated that the interchange between a distal segment of 4B and long arm of 3D occurred in the RT855-13. The novel translocation chromosomes in wheat were recorded as 3DS.4BSDS and 3DL-4BSPS.4BL. Reports about CCT as a genetic resource in plant breeding programs are scarce. Both lines expressed high resistance to Puccinia striiformis f. sp. tritici, which are prevalent in China and are virulent on Yr9, and the CCT line RT855-13 retained better resistance as adult plants compared with RT855-14 in the field. Both lines, especially the CCT line RT855-13, exhibited better agronomic traits than their wheat parent, Mianyang11, indicating that both translocation lines could potentially be used for wheat improvement. The results also indicated that the position effects of CCT can lead to beneficial variations in agronomic and resistant traits, making them a valuable genetic resource to wheat breeding programs.
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The Polymorphisms of Oligonucleotide Probes in Wheat Cultivars Determined by ND-FISH. Molecules 2019; 24:molecules24061126. [PMID: 30901897 PMCID: PMC6471732 DOI: 10.3390/molecules24061126] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 03/15/2019] [Accepted: 03/19/2019] [Indexed: 01/24/2023] Open
Abstract
Non-denaturing fluorescence in situ hybridization (ND-FISH) has been used to distinguish wheat chromosomes and to detect alien chromosomes in the wheat genome. In this study, five different oligonucleotide probes were used with ND-FISH to examine 21 wheat cultivars and lines. These oligonucleotide probes distinguished 42 wheat chromosomes and also detected rye chromatin in the wheat genome. Moreover, the signal patterns of the oligonucleotide probes Oligo-pTa535-1 and Oligo-pSc119.2-1 showed high polymorphism in the wheat chromosomes. A total of 17.6% of the A group chromosomes, 25.9% of the B group chromosomes and 8.9% of the D group chromosomes showed obvious mutations when they were compared to the standard ND-FISH signal patterns, and most of them were Oligo-pSc119.2-1 mutants. The results suggested that these polymorphisms could be induced by the crossing of wheat cultivars. The results provided more information for the further application of oligonucleotide probes and ND-FISH.
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Rakszegi M, Darkó É, Lovegrove A, Molnár I, Láng L, Bedő Z, Molnár-Láng M, Shewry P. Drought stress affects the protein and dietary fiber content of wholemeal wheat flour in wheat/Aegilops addition lines. PLoS One 2019; 14:e0211892. [PMID: 30721262 PMCID: PMC6363227 DOI: 10.1371/journal.pone.0211892] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/22/2019] [Indexed: 01/06/2023] Open
Abstract
Wild relatives of wheat, such as Aegilops spp. are potential sources of genes conferring tolerance to drought stress. As drought stress affects seed composition, the main goal of the present study was to determine the effects of drought stress on the content and composition of the grain storage protein (gliadin (Gli), glutenin (Glu), unextractable polymeric proteins (UPP%) and dietary fiber (arabinoxylan, β-glucan) components of hexaploid bread wheat (T. aestivum) lines containing added chromosomes from Ae. biuncialis or Ae. geniculata. Both Aegilops parents have higher contents of protein and β-glucan and higher proportions of water-soluble arabinoxylans (determined as pentosans) than wheat when grown under both well-watered and drought stress conditions. In general, drought stress resulted in increased contents of protein and total pentosans in the addition lines, while the β-glucan content decreased in many of the addition lines. The differences found between the wheat/Aegilops addition lines and wheat parents under well-watered conditions were also manifested under drought stress conditions: Namely, elevated β-glucan content was found in addition lines containing chromosomes 5Ug, 7Ug and 7Mb, while chromosomes 1Ub and 1Mg affected the proportion of polymeric proteins (determined as Glu/Gli and UPP%, respectively) under both well-watered and drought stress conditions. Furthermore, the addition of chromosome 6Mg decreased the WE-pentosan content under both conditions. The grain composition of the Aegilops accessions was more stable under drought stress than that of wheat, and wheat lines with the added Aegilops chromosomes 2Mg and 5Mg also had more stable grain protein and pentosan contents. The negative effects of drought stress on both the physical and compositional properties of wheat were also reduced by the addition of these. These results suggest that the stability of the grain composition could be improved under drought stress conditions by the intraspecific hybridization of wheat with its wild relatives.
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Affiliation(s)
- Marianna Rakszegi
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
- * E-mail:
| | - Éva Darkó
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Alison Lovegrove
- Department of Plant Science, Rothamsted Research, Harpenden, United Kingdom
| | - István Molnár
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - László Láng
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Zoltán Bedő
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Márta Molnár-Láng
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Peter Shewry
- Department of Plant Science, Rothamsted Research, Harpenden, United Kingdom
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Ren T, Tang Z, Fu S, Yan B, Tan F, Ren Z, Li Z. Molecular Cytogenetic Characterization of Novel Wheat-rye T1RS.1BL Translocation Lines with High Resistance to Diseases and Great Agronomic Traits. FRONTIERS IN PLANT SCIENCE 2017; 8:799. [PMID: 28555152 PMCID: PMC5430056 DOI: 10.3389/fpls.2017.00799] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 04/28/2017] [Indexed: 05/02/2023]
Abstract
Rye has been used worldwide as a source for the genetic improvement of wheat. In this study, two stable wheat-rye primary T1RS.1BL translocation lines were selected from the progeny of the crossing of the wheat cultivar Mianyang11-1 and a Chinese local rye variety, Weining. These two novel translocation lines were identified by molecular cytogenetic analysis. PCR results, multi-color fluorescence in situ hybridization (MC-FISH), and acid polyacrylamide gel electrophoresis (A-PAGE) indicated that both new translocation lines harbor a pair of T1RS.1BL translocation chromosomes, and have been named RT828-10 and RT828-11, respectively. The cytogenetic results also indicated that the pSc119.2 signals of 5AL were absent in both lines along with the pSc119.2 signals of 4AL of RT828-11. When inoculated with different stripe rust and powdery mildew isolates, both lines expressed high resistance to Puccinia striiformis f. sp. tritici and Blumeria graminis f. sp. tritici pathotypes, which are prevalent in China and are virulent on Yr9 and Pm8. The line RT828-11 also exhibited excellent agronomic traits in the field. The present study indicates that this rye variety may carry untapped variations that could potentially be used for wheat improvement.
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Affiliation(s)
- Tianheng Ren
- Agronomy College, Sichuan Agricultural UniversitySichuan, China
| | - Zongxiang Tang
- Agronomy College, Sichuan Agricultural UniversitySichuan, China
| | - Shulan Fu
- Agronomy College, Sichuan Agricultural UniversitySichuan, China
| | - Benju Yan
- College of Life Science, Sichuan Agricultural UniversitySichuan, China
| | - Feiquan Tan
- Agronomy College, Sichuan Agricultural UniversitySichuan, China
| | - Zhenglong Ren
- Agronomy College, Sichuan Agricultural UniversitySichuan, China
| | - Zhi Li
- College of Life Science, Sichuan Agricultural UniversitySichuan, China
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