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Türkösi E, Szakács É, Ivanizs L, Farkas A, Gaál E, Said M, Darkó É, Cséplő M, Mikó P, Doležel J, Molnár-Láng M, Molnár I, Kruppa K. A chromosome arm from Thinopyrum intermedium × Thinopyrum ponticum hybrid confers increased tillering and yield potential in wheat. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2024; 44:7. [PMID: 38263978 PMCID: PMC10803699 DOI: 10.1007/s11032-024-01439-y] [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: 03/23/2023] [Accepted: 12/25/2023] [Indexed: 01/25/2024]
Abstract
Tiller number is a key component of wheat plant architecture having a direct impact on grain yield. Because of their viability, biotic resistance, and abiotic stress tolerance, wild relative species are a valuable gene source for increasing wheat genetic diversity, including yield potential. Agropyron glael, a perennial hybrid of Thinopyrum intermedium and Th. ponticum, was created in the 1930s. Recent genome analyses identified five evolutionarily distinct subgenomes (J, Jst, Jvs, Jr, and St), making A. glael an important gene source for transferring useful agronomical traits into wheat. During a bread wheat × A. glael crossing program, a genetically stable translocation line, WT153397, was developed. Sequential in situ hybridizations (McGISH) with J-, St-, and D-genomic DNA probes and pSc119.2, Afa family, pTa71, and (GAA)7 DNA repeats, as well as molecular markers specific for the wheat 6D chromosome, revealed the presence of a 6DS.6Jvs Robertsonian translocation in the genetic line. Field trials in low-input and high-input breeding nurseries over four growing seasons demonstrated the Agropyron chromosome arm's high compensating ability for the missing 6DL, as spike morphology and fertility of WT153397 did not differ significantly from those of wheat parents, Mv9kr1 and 'Mv Karizma.' Moreover, the introgressed 6Jvs chromosome arm significantly increased the number of productive tillers, resulting in a significantly higher grain yield potential compared to the parental wheat cultivars. The translocated chromosome could be highly purified by flow cytometric sorting due to the intense fluorescent labeling of (GAA)7 clusters on the Thinopyrum chromosome arm, providing an opportunity to use chromosome genomics to identify Agropyron gene variant(s) responsible for the tillering capacity. The translocation line WT153397 is an important genetic stock for functional genetic studies of tiller formation and useful breeding material for increasing wheat yield potential. The study also discusses the use of the translocation line in wheat breeding. Supplementary information The online version contains supplementary material available at 10.1007/s11032-024-01439-y.
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Affiliation(s)
- Edina Türkösi
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - Éva Szakács
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - László Ivanizs
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - András Farkas
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - Eszter Gaál
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - Mahmoud Said
- Centre of Plant Structural and Functional Genomics, Institute of Experimental Botany of the Czech Academy of Sciences, 779 00 Olomouc, Czechia
- Agricultural Research Centre, Field Crops Research Institute, Cairo, Egypt
| | - Éva Darkó
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - Mónika Cséplő
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - Péter Mikó
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - Jaroslav Doležel
- Centre of Plant Structural and Functional Genomics, Institute of Experimental Botany of the Czech Academy of Sciences, 779 00 Olomouc, Czechia
| | - Márta Molnár-Láng
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - István Molnár
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
| | - Klaudia Kruppa
- Centre for Agricultural Research, Hungarian Research Network (HUN-REN), 2462 Martonvásár, Hungary
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2
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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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Morgan R, Danilova T, Newell M, Cai X, Jones S. Agronomic Evaluation and Molecular Cytogenetic Characterization of Triticum aestivum × Thinopyrum spp. Derivative Breeding Lines Presenting Perennial Growth Habits. PLANTS (BASEL, SWITZERLAND) 2023; 12:3217. [PMID: 37765381 PMCID: PMC10534903 DOI: 10.3390/plants12183217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 08/31/2023] [Accepted: 09/03/2023] [Indexed: 09/29/2023]
Abstract
The transition from annual to perennial growth habits can contribute to increased sustainability and diversification of staple cropping systems like those based on annual wheat. Amphiploids between Triticum aestivum and Thinopyrum spp. can present a wheat-like morphology and post sexual cycle regrowth. The complex and unpredictable nature of the chromosomal rearrangements typical of inter-generic hybrids can hamper progress in the development of this new crop. By using fluorescence in situ hybridization, we described the genomic constitution of three perennial wheat breeding lines that regrew and completed a second year of production in field conditions in Washington state (USA). Two breeding lines presented stable, 56-chromosome partial amphiploids; however, their chromosome composition differed significantly. The third breeding line presented an unstable karyotype with a chromosome number ranging from 53 to 58 across eight individuals. The agronomic performance of the perennial breeding lines was evaluated for two growing seasons from 2020 to 2022. The grain yields of the perennial lines were lower than the grain production of the annual wheat control line in the first season. The perennial lines displayed vigorous regrowth after the initial harvest; however, worsening environmental conditions in the second season of growth hampered subsequent growth and grain yield. This information facilitates the breeding work necessary to improve key traits by grouping agronomically valuable individuals according to their genomic constitution.
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Affiliation(s)
- Robin Morgan
- WSU Breadlab, Department of Crop Science, Washington State University, 11768 Westar Ln, Burlington, WA 98233, USA;
| | - Tatiana Danilova
- Wheat, Sorghum & Forage Research Unit, USDA-ARS, Lincoln, NE 68583, USA; (T.D.); (X.C.)
| | - Matthew Newell
- Cowra Agricultural Research Station, NSW Department of Primary Industries, 296 Binni Ck Rd, Cowra, NSW 2794, Australia;
| | - Xiwen Cai
- Wheat, Sorghum & Forage Research Unit, USDA-ARS, Lincoln, NE 68583, USA; (T.D.); (X.C.)
| | - Stephen Jones
- WSU Breadlab, Department of Crop Science, Washington State University, 11768 Westar Ln, Burlington, WA 98233, USA;
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Kroupin PY, Ulyanov DS, Karlov GI, Divashuk MG. The launch of satellite: DNA repeats as a cytogenetic tool in discovering the chromosomal universe of wild Triticeae. Chromosoma 2023:10.1007/s00412-023-00789-4. [PMID: 36905415 DOI: 10.1007/s00412-023-00789-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/16/2022] [Accepted: 02/22/2023] [Indexed: 03/12/2023]
Abstract
Fluorescence in situ hybridization is a powerful tool that enables plant researchers to perform systematic, evolutionary, and population studies of wheat wild relatives as well as to characterize alien introgression into the wheat genome. This retrospective review reflects on progress made in the development of methods for creating new chromosomal markers since the launch of this cytogenetic satellite instrument to the present day. DNA probes based on satellite repeats have been widely used for chromosome analysis, especially for "classical" wheat probes (pSc119.2 and Afa family) and "universal" repeats (45S rDNA, 5S rDNA, and microsatellites). The rapid development of new-generation sequencing and bioinformatical tools, and the application of oligo- and multioligonucleotides has resulted in an explosion in the discovery of new genome- and chromosome-specific chromosome markers. Owing to modern technologies, new chromosomal markers are appearing at an unprecedented velocity. The present review describes the specifics of localization when employing commonly used vs. newly developed probes for chromosomes in J, E, V, St, Y, and P genomes and their diploid and polyploid carriers Agropyron, Dasypyrum, Thinopyrum, Pseudoroegneria, Elymus, Roegneria, and Kengyilia. Particular attention is paid to the specificity of probes, which determines their applicability for the detection of alien introgression to enhance the genetic diversity of wheat through wide hybridization. The information from the reviewed articles is summarized into the TRepeT database, which may be useful for studying the cytogenetics of Triticeae. The review describes the trends in the development of technology used in establishing chromosomal markers that can be used for prediction and foresight in the field of molecular biology and in methods of cytogenetic analysis.
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Affiliation(s)
- Pavel Yu Kroupin
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya Street, 42, 127550, Moscow, Russia.
| | - Daniil S Ulyanov
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya Street, 42, 127550, Moscow, Russia
| | - Gennady I Karlov
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya Street, 42, 127550, Moscow, Russia
| | - Mikhail G Divashuk
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya Street, 42, 127550, Moscow, Russia
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5
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Cápal P, Said M, Molnár I, Doležel J. Flow Cytometric Analysis and Sorting of Plant Chromosomes. Methods Mol Biol 2023; 2672:177-200. [PMID: 37335476 DOI: 10.1007/978-1-0716-3226-0_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Flow cytometry offers a unique way of analyzing and manipulating plant chromosomes. During a rapid movement in a liquid stream, large populations can be classified in a short time according to their fluorescence and light scatter properties. Chromosomes whose optical properties differ from other chromosomes in a karyotype can be purified by flow sorting and used in a range of applications in cytogenetics, molecular biology, genomics, and proteomics. As the samples for flow cytometry must be liquid suspensions of single particles, intact chromosomes must be released from mitotic cells. This protocol describes a procedure for preparation of suspensions of mitotic metaphase chromosomes from meristem root tips and their flow cytometric analysis and sorting for various downstream applications.
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Affiliation(s)
- Petr Cápal
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, Olomouc, Czech Republic
| | - Mahmoud Said
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, Olomouc, Czech Republic
- Field Crops Research Institute, Agricultural Research Centre, Giza, Cairo, Egypt
| | - István Molnár
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, Olomouc, Czech Republic
- Agricultural Institute, Centre for Agricultural Research, ELKH, Martonvásár, Hungary
| | - Jaroslav Doležel
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of Plant Structural and Functional Genomics, Olomouc, Czech Republic.
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6
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Wang Z, Li Q, Liu C, Liu F, Xu N, Yao M, Yu H, Wang Y, Chen J, Bai S, Yang J, Sun G, Long J, Fan Y, Kang L, Li H, Zhang X, Liu S. Development and identification of an elite wheat-Hordeum californicum T6HcS/6BL translocation line ND646 containing several desirable traits. Genet Mol Biol 2022; 45:e20220117. [PMID: 36214618 PMCID: PMC9549530 DOI: 10.1590/1678-4685-gmb-2022-0117] [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: 03/24/2022] [Accepted: 08/18/2022] [Indexed: 11/04/2022] Open
Abstract
Hordeum californicum (H. californicum,
2n=2X=14, HcHc), one of the wild relatives of wheat
(Triticum aestivum L.), harbors many desirable genes and is
a potential genetic resource for wheat improvement. In this study, an elite line
ND646 was selected from a BC4F5 population, which was
developed using 60Co-γ irradiated wheat-H.
californicum disomic addition line WJ28-1 (DA6Hc) as the
donor parent and Ningchun 4 as the recurrent parent. ND646 was identified as a
novel wheat-H. californicum 6HcS/6BL translocation
line using genomic in situ hybridization (GISH), fluorescence
in situ hybridization (FISH), and H.
californicum-specific expressed sequence tag (EST) markers. Further
evaluation revealed that ND646 had excellent performance in several traits, such
as a higher sedimentation value (SV), higher water absorption rate (WAR), and
higher hardness index (HI). More importantly, it had more kernels per spike
(KPS), a higher grain yields (GY), and good resistance to powdery mildew, leaf
rust, and 2,4-D butylate (2,4-D). Its excellent phenotypic performance laid the
foundation for further investigation of its genetic architecture and makes ND646
a useful germplasm resource for wheat breeding.
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Affiliation(s)
- Zhangjun Wang
- Nanjing Agricultural University, Cytogenetics Institute, State Key
Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing, Jiangsu,
China.,Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Qingfeng Li
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China.,*Send correspondence to Qingfeng Li. Ningxia University, School of
Agriculture, 489 Helanshan West Rd., Xixia District, Yinchuan, Ningxia province,
China. E-mail:
| | - Caixia Liu
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Fenglou Liu
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Nali Xu
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Mingming Yao
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Huixia Yu
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Yanqing Wang
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Jiajing Chen
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Shuangyu Bai
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Jingxin Yang
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Gang Sun
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Jiaohui Long
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Yalei Fan
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Ling Kang
- Ningxia Academy of Agricultural-Forestry Sciences, Institute of Crop
Sciences, Yinchuan, Ningxia, China
| | - Hongxia Li
- Ningxia Academy of Agricultural-Forestry Sciences, Institute of Crop
Sciences, Yinchuan, Ningxia, China
| | - Xiaogang Zhang
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
| | - Shengxiang Liu
- Ningxia University, School of Agriculture, Yinchuan, Ningxia,
China
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Said M, Cápal P, Farkas A, Gaál E, Ivanizs L, Friebe B, Doležel J, Molnár I. Flow karyotyping of wheat- Aegilops additions facilitate dissecting the genomes of Ae. biuncialis and Ae. geniculata into individual chromosomes. FRONTIERS IN PLANT SCIENCE 2022; 13:1017958. [PMID: 36262648 PMCID: PMC9575658 DOI: 10.3389/fpls.2022.1017958] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/09/2022] [Indexed: 06/13/2023]
Abstract
Breeding of wheat adapted to new climatic conditions and resistant to diseases and pests is hindered by a limited gene pool due to domestication and thousands of years of human selection. Annual goatgrasses (Aegilops spp.) with M and U genomes are potential sources of the missing genes and alleles. Development of alien introgression lines of wheat may be facilitated by the knowledge of DNA sequences of Aegilops chromosomes. As the Aegilops genomes are complex, sequencing relevant Aegilops chromosomes purified by flow cytometric sorting offers an attractive route forward. The present study extends the potential of chromosome genomics to allotetraploid Ae. biuncialis and Ae. geniculata by dissecting their M and U genomes into individual chromosomes. Hybridization of FITC-conjugated GAA oligonucleotide probe to chromosomes suspensions of the two species allowed the application of bivariate flow karyotyping and sorting some individual chromosomes. Bivariate flow karyotype FITC vs. DAPI of Ae. biuncialis consisted of nine chromosome-populations, but their chromosome content determined by microscopic analysis of flow sorted chromosomes indicated that only 7Mb and 1Ub could be sorted at high purity. In the case of Ae. geniculata, fourteen chromosome-populations were discriminated, allowing the separation of nine individual chromosomes (1Mg, 3Mg, 5Mg, 6Mg, 7Mg, 1Ug, 3Ug, 6Ug, and 7Ug) out of the 14. To sort the remaining chromosomes, a partial set of wheat-Ae. biuncialis and a whole set of wheat-Ae. geniculata chromosome addition lines were also flow karyotyped, revealing clear separation of the GAA-rich Aegilops chromosomes from the GAA-poor A- and D-genome chromosomes of wheat. All of the alien chromosomes represented by individual addition lines could be isolated at purities ranging from 74.5% to 96.6% and from 87.8% to 97.7%, respectively. Differences in flow karyotypes between Ae. biuncialis and Ae. geniculata were analyzed and discussed. Chromosome-specific genomic resources will facilitate gene cloning and the development of molecular tools to support alien introgression breeding of wheat.
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Affiliation(s)
- Mahmoud Said
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
- Field Crops Research Institute, Agricultural Research Centre, Cairo, Egypt
| | - Petr Cápal
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - András Farkas
- Agricultural Institute, Centre for Agricultural Research, Eötvös Lóránd Kutatási Hálózat (ELKH), Martonvásár, Hungary
| | - Eszter Gaál
- Agricultural Institute, Centre for Agricultural Research, Eötvös Lóránd Kutatási Hálózat (ELKH), Martonvásár, Hungary
| | - László Ivanizs
- Agricultural Institute, Centre for Agricultural Research, Eötvös Lóránd Kutatási Hálózat (ELKH), Martonvásár, Hungary
| | - Bernd Friebe
- Wheat Genetics Resource Center, Kansas State University, Manhattan, KS, United States
| | - Jaroslav Doležel
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - István Molnár
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
- Agricultural Institute, Centre for Agricultural Research, Eötvös Lóránd Kutatási Hálózat (ELKH), Martonvásár, Hungary
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8
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Lenykó-Thegze A, Fábián A, Mihók E, Makai D, Cseh A, Sepsi A. Pericentromeric chromatin reorganisation follows the initiation of recombination and coincides with early events of synapsis in cereals. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 107:1585-1602. [PMID: 34171148 DOI: 10.1111/tpj.15391] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/04/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
The reciprocal exchange of genetic information between homologous chromosomes during meiotic recombination is essential to secure balanced chromosome segregation and to promote genetic diversity. The chromosomal position and frequency of reciprocal genetic exchange shapes the efficiency of breeding programmes and influences crop improvement under a changing climate. In large genome cereals, such as wheat and barley, crossovers are consistently restricted to subtelomeric chromosomal regions, thus preventing favourable allele combinations being formed within a considerable proportion of the genome, including interstitial and pericentromeric chromatin. Understanding the key elements driving crossover designation is therefore essential to broaden the regions available for crossovers. Here, we followed early meiotic chromatin dynamism in cereals through the visualisation of a homologous barley chromosome arm pair stably transferred into the wheat genetic background. By capturing the dynamics of a single chromosome arm at the same time as detecting the undergoing events of meiotic recombination and synapsis, we showed that subtelomeric chromatin of homologues synchronously transitions to an open chromatin structure during recombination initiation. By contrast, pericentromeric and interstitial regions preserved their closed chromatin organisation and become unpackaged only later, concomitant with initiation of recombinatorial repair and the initial assembly of the synaptonemal complex. Our results raise the possibility that the closed pericentromeric chromatin structure in cereals may influence the fate decision during recombination initiation, as well as the spatial development of synapsis, and may also explain the suppression of crossover events in the proximity of the centromeres.
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Affiliation(s)
- Andrea Lenykó-Thegze
- Department of Biological Resources, Eötvös Loránd Research Network, Centre for Agricultural Research, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - Attila Fábián
- Department of Biological Resources, Eötvös Loránd Research Network, Centre for Agricultural Research, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - Edit Mihók
- Department of Biological Resources, Eötvös Loránd Research Network, Centre for Agricultural Research, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - Diána Makai
- Department of Biological Resources, Eötvös Loránd Research Network, Centre for Agricultural Research, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - András Cseh
- Department of Molecular Breeding, Eötvös Loránd Research Network, Centre for Agricultural Research, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - Adél Sepsi
- Department of Biological Resources, Eötvös Loránd Research Network, Centre for Agricultural Research, Brunszvik u. 2, Martonvásár, 2462, Hungary
- Department of Applied Biotechnology and Food Science (ABÉT), BME, Budapest University of Technology and Economics, Műegyetem rkp. 3-9, Budapest, 1111, Hungary
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9
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Ebrahimzadegan R, Orooji F, Ma P, Mirzaghaderi G. Differentially Amplified Repetitive Sequences Among Aegilops tauschii Subspecies and Genotypes. FRONTIERS IN PLANT SCIENCE 2021; 12:716750. [PMID: 34490015 PMCID: PMC8417419 DOI: 10.3389/fpls.2021.716750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
Genomic repetitive sequences commonly show species-specific sequence type, abundance, and distribution patterns, however, their intraspecific characteristics have been poorly described. We quantified the genomic repetitive sequences and performed single nucleotide polymorphism (SNP) analysis between 29 Ae. tauschii genotypes and subspecies using publicly available raw genomic Illumina sequence reads and used fluorescence in situ hybridization (FISH) to experimentally analyze some repeats. The majority of the identified repetitive sequences had similar contents and proportions between anathera, meyeri, and strangulata subspecies. However, two Ty3/gypsy retrotransposons (CL62 and CL87) showed significantly higher abundances, and CL1, CL119, CL213, CL217 tandem repeats, and CL142 retrotransposon (Ty1/copia type) showed significantly lower abundances in subspecies strangulata compared with the subspecies anathera and meyeri. One tandem repeat and 45S ribosomal DNA (45S rDNA) abundances showed a high variation between genotypes but their abundances were not subspecies specific. Phylogenetic analysis using the repeat abundances of the aforementioned clusters placed the strangulata subsp. in a distinct clade but could not discriminate anathera and meyeri. A near complete differentiation of anathera and strangulata subspecies was observed using SNP analysis; however, var. meyeri showed higher genetic diversity. FISH using major tandem repeats couldn't detect differences between subspecies, although (GAA)10 signal patterns generated two different karyotype groups. Taken together, the different classes of repetitive DNA sequences have differentially accumulated between strangulata and the other two subspecies of Ae. tauschii that is generally in agreement with spike morphology, implying that factors affecting repeatome evolution are variable even among highly closely related lineages.
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Affiliation(s)
- Rahman Ebrahimzadegan
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran
| | - Fatemeh Orooji
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran
| | - Pengtao Ma
- College of Life Sciences, Yantai University, Yantai, China
| | - Ghader Mirzaghaderi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran
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Said M, Holušová K, Farkas A, Ivanizs L, Gaál E, Cápal P, Abrouk M, Martis-Thiele MM, Kalapos B, Bartoš J, Friebe B, Doležel J, Molnár I. Development of DNA Markers From Physically Mapped Loci in Aegilops comosa and Aegilops umbellulata Using Single-Gene FISH and Chromosome Sequences. FRONTIERS IN PLANT SCIENCE 2021; 12:689031. [PMID: 34211490 PMCID: PMC8240756 DOI: 10.3389/fpls.2021.689031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/19/2021] [Indexed: 05/31/2023]
Abstract
Breeding of agricultural crops adapted to climate change and resistant to diseases and pests is hindered by a limited gene pool because of domestication and thousands of years of human selection. One way to increase genetic variation is chromosome-mediated gene transfer from wild relatives by cross hybridization. In the case of wheat (Triticum aestivum), the species of genus Aegilops are a particularly attractive source of new genes and alleles. However, during the evolution of the Aegilops and Triticum genera, diversification of the D-genome lineage resulted in the formation of diploid C, M, and U genomes of Aegilops. The extent of structural genome alterations, which accompanied their evolution and speciation, and the shortage of molecular tools to detect Aegilops chromatin hamper gene transfer into wheat. To investigate the chromosome structure and help develop molecular markers with a known physical position that could improve the efficiency of the selection of desired introgressions, we developed single-gene fluorescence in situ hybridization (FISH) maps for M- and U-genome progenitors, Aegilops comosa and Aegilops umbellulata, respectively. Forty-three ortholog genes were located on 47 loci in Ae. comosa and on 52 loci in Ae. umbellulata using wheat cDNA probes. The results obtained showed that M-genome chromosomes preserved collinearity with those of wheat, excluding 2 and 6M containing an intrachromosomal rearrangement and paracentric inversion of 6ML, respectively. While Ae. umbellulata chromosomes 1, 3, and 5U maintained collinearity with wheat, structural reorganizations in 2, 4, 6, and 7U suggested a similarity with the C genome of Aegilops markgrafii. To develop molecular markers with exact physical positions on chromosomes of Aegilops, the single-gene FISH data were validated in silico using DNA sequence assemblies from flow-sorted M- and U-genome chromosomes. The sequence similarity search of cDNA sequences confirmed 44 out of the 47 single-gene loci in Ae. comosa and 40 of the 52 map positions in Ae. umbellulata. Polymorphic regions, thus, identified enabled the development of molecular markers, which were PCR validated using wheat-Aegilops disomic chromosome addition lines. The single-gene FISH-based approach allowed the development of PCR markers specific for cytogenetically mapped positions on Aegilops chromosomes, substituting as yet unavailable segregating map. The new knowledge and resources will support the efforts for the introgression of Aegilops genes into wheat and their cloning.
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Affiliation(s)
- Mahmoud Said
- Institute of Experimental Botany of the Czech Academy of Sciences, Center of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
- Agricultural Research Centre, Field Crops Research Institute, Cairo, Egypt
| | - Katerina Holušová
- Institute of Experimental Botany of the Czech Academy of Sciences, Center of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - András Farkas
- ELKH Centre for Agricultural Research, Agricultural Institute, Martonvásár, Hungary
| | - László Ivanizs
- ELKH Centre for Agricultural Research, Agricultural Institute, Martonvásár, Hungary
| | - Eszter Gaál
- ELKH Centre for Agricultural Research, Agricultural Institute, Martonvásár, Hungary
| | - Petr Cápal
- Institute of Experimental Botany of the Czech Academy of Sciences, Center of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Michael Abrouk
- Biological and Environmental Science and Engineering Division, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Mihaela M. Martis-Thiele
- NBIS (National Bioinformatics Infrastructure Sweden, Science for Life Laboratory), Division of Cell Biology, Department of Clinical and Experimental Medicine, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
| | - Balázs Kalapos
- ELKH Centre for Agricultural Research, Agricultural Institute, Martonvásár, Hungary
| | - Jan Bartoš
- Institute of Experimental Botany of the Czech Academy of Sciences, Center of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Bernd Friebe
- Wheat Genetics Resource Center, Kansas State University, Manhattan, KS, United States
| | - Jaroslav Doležel
- Institute of Experimental Botany of the Czech Academy of Sciences, Center of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - István Molnár
- Institute of Experimental Botany of the Czech Academy of Sciences, Center of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
- ELKH Centre for Agricultural Research, Agricultural Institute, Martonvásár, Hungary
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11
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Cui Y, Xing P, Qi X, Bao Y, Wang H, Wang RRC, Li X. Characterization of chromosome constitution in three wheat - Thinopyrum intermedium amphiploids revealed frequent rearrangement of alien and wheat chromosomes. BMC PLANT BIOLOGY 2021; 21:129. [PMID: 33663390 PMCID: PMC7931331 DOI: 10.1186/s12870-021-02896-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 02/21/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Thinopyrum intermedium (2n = 6x = 42) is an important wild perennial Triticeae species exhibiting many potentially favorable traits for wheat improvement. Wheat-Th. intermedium partial amphiploids serve as a bridge to transfer desirable genes from Th. intermedium into common wheat. RESULTS Three octoploid Trititrigia accessions (TE261-1, TE266-1, and TE346-1) with good resistances to stripe rust, powdery mildew and aphids were selected from hybrid progenies between Th. intermedium and the common wheat variety 'Yannong 15' (YN15). Genomic in situ hybridization (GISH), fluorescence in situ hybridization (FISH) and multicolor GISH (McGISH) analyses demonstrated that the three octoploid Trititrigia possess 42 wheat chromosomes and 14 Th. intermedium chromosomes. The 14 alien (Th. intermedium) chromosomes belong to a mixed genome consisting of J-, JS- and St-genome chromosomes rather than a single J, JS or St genome. Different types of chromosomal structural variation were also detected in the 1A, 6A, 6B, 2D and 7D chromosomes via FISH, McGISH and molecular marker analysis. The identity of the alien chromosomes and the variationes in the wheat chromosomes in the three Trititrigia octoploids were also different. CONCLUSIONS The wheat-Th. intermedium partial amphiploids possess 14 alien chromosomes which belong to a mixed genome consisting of J-, JS- and St- chromosomes, and 42 wheat chromosomes with different structural variations. These accessions could be used as genetic resources in wheat breeding for the transfer of disease and pest resistance genes from Th. intermedium to common wheat.
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Affiliation(s)
- Yu Cui
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agriculture University, Tai'an, 271018, Shandong, China
| | - Piyi Xing
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agriculture University, Tai'an, 271018, Shandong, China
| | - Xiaolei Qi
- Tai'an Academy of Agricultural Science, Tai'an, 271000, China
| | - Yinguang Bao
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agriculture University, Tai'an, 271018, Shandong, China
| | - Honggang Wang
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agriculture University, Tai'an, 271018, Shandong, China
| | - Richard R-C Wang
- USDA-ARS Forage & Range Research Laboratory, Logan, UT, 84322-6300, USA
| | - Xingfeng Li
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agriculture University, Tai'an, 271018, Shandong, China.
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12
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Zhang Y, Fan C, Chen Y, Wang RRC, Zhang X, Han F, Hu Z. Genome evolution during bread wheat formation unveiled by the distribution dynamics of SSR sequences on chromosomes using FISH. BMC Genomics 2021; 22:55. [PMID: 33446108 PMCID: PMC7809806 DOI: 10.1186/s12864-020-07364-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 12/30/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND During the bread wheat speciation by polyploidization, a series of genome rearrangement and sequence recombination occurred. Simple sequence repeat (SSR) sequences, predominately located in heterochromatic regions of chromosomes, are the effective marker for tracing the genomic DNA sequence variations. However, to date the distribution dynamics of SSRs on chromosomes of bread wheat and its donors, including diploid and tetraploid Triticum urartu, Aegilops speltoides, Aegilops tauschii, Triticum turgidum ssp. dicocoides, reflecting the genome evolution events during bread wheat formation had not been comprehensively investigated. RESULTS The genome evolution was studied by comprehensively comparing the distribution patterns of (AAC)n, (AAG)n, (AGC)n and (AG)n in bread wheat Triticum aestivum var. Chinese Spring and its progenitors T. urartu, A. speltoides, Ae. tauschii, wild tetroploid emmer wheat T. dicocoides, and cultivated emmer wheat T. dicoccum. Results indicated that there are specific distribution patterns in different chromosomes from different species for each SSRs. They provided efficient visible markers for identification of some individual chromosomes and SSR sequence evolution tracing from the diploid progenitors to hexaploid wheat. During wheat speciation, the SSR sequence expansion occurred predominately in the centromeric and pericentromeric regions of B genome chromosomes accompanied by little expansion and elimination on other chromosomes. This result indicated that the B genome might be more sensitive to the "genome shock" and more changeable during wheat polyplodization. CONCLUSIONS During the bread wheat evolution, SSRs including (AAC)n, (AAG)n, (AGC)n and (AG)n in B genome displayed the greatest changes (sequence expansion) especially in centromeric and pericentromeric regions during the polyploidization from Ae. speltoides S genome, the most likely donor of B genome. This work would enable a better understanding of the wheat genome formation and evolution and reinforce the viewpoint that B genome was originated from S genome.
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Affiliation(s)
- Yingxin Zhang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China.,College of Agriculture, Yangtze University, Jingzhou, 434000, Hubei, China
| | - Chengming Fan
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Yuhong Chen
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Richard R-C Wang
- United States Department of Agriculture, Agricultural Research Service, Forage and Range Research Laboratory, Utah State University, Logan, UT, 84322-6300, USA
| | - Xiangqi Zhang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Fangpu Han
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Zanmin Hu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China. .,College of Agriculture, University of Chinese Academy of Sciences, Beijing, 100049, China.
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Aliyeva AJ, Farkas A, Aminov NK, Kruppa K, Molnár-Láng M, Türkösi E. Molecular Cytogenetic Analysis and Meiotic Pairing Behavior of Progenies Originating from a Hexaploid Triticale (×Triticosecale, Wittmack) and Bread Wheat (Triticum aestivum, L.) Cross. Cytogenet Genome Res 2020; 160:47-56. [PMID: 32172236 DOI: 10.1159/000506385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2019] [Indexed: 11/19/2022] Open
Abstract
The chromosomal constitution of 9 dwarf (D) and 8 semidwarf (SD) lines derived by crossing hexaploid Triticale line NA-75 (AABBRR, 2n = 6x = 42) with Triticumaestivum (AABBDD, 2n = 6x = 42) cv. Chinese Spring was investigated using molecular cytogenetic techniques: fluorescence in situ hybridization and genomic in situ hybridization. A wheat-rye translocation (T4DS.7RL), 8 substitution lines, and a ditelosomic addition line (7RSdt) were identified. In the substitution lines, 1, 2, or 4 pairs of wheat chromosomes, belonging to the A, B, or D genome, were replaced by rye chromosomes. Substitutions between chromosomes belonging to different wheat genomes [5B(5A), 1D(1B)] also occurred. The lines were genetically stable, each carrying 42 chromosomes, except the wheat-rye ditelosomic addition line, which carried 21 pairs of wheat chromosomes and 1 pair of rye telocentric chromosomes (7RS). The chromosome pairing behavior of the lines was studied during metaphase I of meiosis. The chromosome pairing level and the number of ring bivalents were different for each line. Besides rod bivalents, univalent and multivalent associations (tri- and quadrivalents) were also detected. The main goal of the experiment was to develop genetically stable wheat/Triticale recombinant lines carrying chromosomes/chromatin fragments originating from the R genome of Triticale line NA-75. Introgression of rye genes into hexaploid wheat can broaden its genetic diversity, and the newly developed lines can be used in wheat breeding programs.
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14
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1RS arm of Secale cereanum 'Kriszta' confers resistance to stripe rust, improved yield components and high arabinoxylan content in wheat. Sci Rep 2020; 10:1792. [PMID: 32019962 PMCID: PMC7000720 DOI: 10.1038/s41598-020-58419-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 12/03/2019] [Indexed: 11/08/2022] Open
Abstract
Wheat-rye T1BL.1RS translocation is widespread worldwide as the genes on 1RS arm have positive effect on stress resistance, grain yield and adaptation ability of wheat. Nowadays, the T1BL.1RS wheat cultivars have become susceptible to rust diseases because of the monophyletic ('Petkus') origin of 1RS. Here we report and discuss the production and detailed investigation of a new T1BL.1RS translocation line carrying 1RS with widened genetic base originating from Secale cereanum. Line '179' exhibited improved spike morphology traits, resistance against stripe rust and leaf rust, as well as higher tillering capacity, fertility and dietary fiber (arabynoxylan) content than the parental wheat genotype. Comparative analyses based on molecular cytogenetic methods and molecular (SSR and DArTseq) makers indicate that the 1RS arm of line '179' is a recombinant of S. cereale and S. strictum homologues, and approximately 16% of its loci were different from that of 'Petkus' origin. 162 (69.5%) 1RS-specific markers were associated with genes, including 10 markers with putative disease resistance functions and LRR domains found on the subtelomeric or pericentromeric regions of 1RS. Line '179' will facilitate the map-based cloning of the resistance genes, and it can contribute to healthy eating and a more cost-efficient wheat production.
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15
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Badaeva ED, Fisenko AV, Surzhikov SA, Yankovskaya AA, Chikida NN, Zoshchuk SA, Belousova MK, Dragovich AY. Genetic Heterogeneity of a Diploid Grass Aegilops tauschii Revealed by Chromosome Banding Methods and Electrophoretic Analysis of the Seed Storage Proteins (Gliadins). RUSS J GENET+ 2019. [DOI: 10.1134/s1022795419110024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Danilova TV, Poland J, Friebe B. Production of a complete set of wheat-barley group-7 chromosome recombinants with increased grain β-glucan content. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:3129-3141. [PMID: 31535163 DOI: 10.1007/s00122-019-03411-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
Wheat-barley group-7 recombinant chromosomes were selected using molecular cytogenetics and SNP markers; increased grain β-glucan content was observed in wheat plants with two and four copies of HvCslF6. The soluble dietary fiber (1-3)(1-4) mixed linked β-D-glucan from cereal grains is a valuable component of a healthy diet, which reduces risks of coronary disease and diabetes. Although wheat is an important cereal crop providing a substantial portion of daily calories and protein intake in the human diet, it has a low level of β-glucan. Owing to the plasticity of the polyploid wheat genome, agronomically important traits absent in the wheat primary gene pool can be introgressed from distant relatives. Barley (Hordeum vulgare L.) has a high grain β-glucan content. Earlier, we introgressed this trait into wheat in the form of whole arm compensating Robertsonian translocations (RobT) involving group-7 chromosomes of barley and all three sub-genomes of hexaploid wheat (Triticum aestivum L). In the presented research, we shortened the barley 7HL arms in these RobTs to small pericentromeric segments, using induced wheat-barley homoeologous recombination. The recombinants were selected using SNP markers and molecular cytogenetics. Plants, comprising barley cellulose synthase-like F6 gene (HvCslF6), responsible for β-glucan synthesis, had a higher grain β-glucan content than the wheat control. Three wheat-barley group-7 recombinant chromosomes involving the A, B and D sub-genomes laid the basis for a multiple-copy gene introgression to hexaploid wheat. It is hypothesized that further increases in the β-glucan content in wheat grain can be obtained by increasing the number of HvCslF6 copies through combining several recombinant chromosomes in one line. The wheat lines with four copies of HvCslF6 exceeded the β-glucan content of the lines with two copies.
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Affiliation(s)
- Tatiana V Danilova
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA
| | - Jesse Poland
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA
| | - Bernd Friebe
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA.
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17
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Danilova TV, Poland J, Friebe B. Production of a complete set of wheat-barley group-7 chromosome recombinants with increased grain β-glucan content. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:3129-3141. [PMID: 31535163 DOI: 10.1007/s00122-019-03411-3413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 07/29/2019] [Indexed: 05/20/2023]
Abstract
Wheat-barley group-7 recombinant chromosomes were selected using molecular cytogenetics and SNP markers; increased grain β-glucan content was observed in wheat plants with two and four copies of HvCslF6. The soluble dietary fiber (1-3)(1-4) mixed linked β-D-glucan from cereal grains is a valuable component of a healthy diet, which reduces risks of coronary disease and diabetes. Although wheat is an important cereal crop providing a substantial portion of daily calories and protein intake in the human diet, it has a low level of β-glucan. Owing to the plasticity of the polyploid wheat genome, agronomically important traits absent in the wheat primary gene pool can be introgressed from distant relatives. Barley (Hordeum vulgare L.) has a high grain β-glucan content. Earlier, we introgressed this trait into wheat in the form of whole arm compensating Robertsonian translocations (RobT) involving group-7 chromosomes of barley and all three sub-genomes of hexaploid wheat (Triticum aestivum L). In the presented research, we shortened the barley 7HL arms in these RobTs to small pericentromeric segments, using induced wheat-barley homoeologous recombination. The recombinants were selected using SNP markers and molecular cytogenetics. Plants, comprising barley cellulose synthase-like F6 gene (HvCslF6), responsible for β-glucan synthesis, had a higher grain β-glucan content than the wheat control. Three wheat-barley group-7 recombinant chromosomes involving the A, B and D sub-genomes laid the basis for a multiple-copy gene introgression to hexaploid wheat. It is hypothesized that further increases in the β-glucan content in wheat grain can be obtained by increasing the number of HvCslF6 copies through combining several recombinant chromosomes in one line. The wheat lines with four copies of HvCslF6 exceeded the β-glucan content of the lines with two copies.
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Affiliation(s)
- Tatiana V Danilova
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA
| | - Jesse Poland
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA
| | - Bernd Friebe
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA.
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18
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Devi U, Grewal S, Yang CY, Hubbart-Edwards S, Scholefield D, Ashling S, Burridge A, King IP, King J. Development and characterisation of interspecific hybrid lines with genome-wide introgressions from Triticum timopheevii in a hexaploid wheat background. BMC PLANT BIOLOGY 2019; 19:183. [PMID: 31060503 PMCID: PMC6501383 DOI: 10.1186/s12870-019-1785-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 04/17/2019] [Indexed: 05/23/2023]
Abstract
BACKGROUND Triticum timopheevii (2n = 4x = 28; AtAtGG), is an important source for new genetic variation for wheat improvement with genes for potential disease resistance and salt tolerance. By generating a range of interspecific hybrid lines, T. timopheevii can contribute to wheat's narrow gene-pool and be practically utilised in wheat breeding programmes. Previous studies that have generated such introgression lines between wheat and its wild relatives have been unable to use high-throughput methods to detect the presence of wild relative segments in such lines. RESULTS A whole genome introgression approach, exploiting homoeologous recombination in the absence of the Ph1 locus, has resulted in the transfer of different chromosome segments from both the At and G genomes of T. timopheevii into wheat. These introgressions have been detected and characterised using single nucleotide polymorphism (SNP) markers present on a high-throughput Axiom® Genotyping Array. The analysis of these interspecific hybrid lines has resulted in the detection of 276 putative unique introgressions from T. timopheevii, thereby allowing the generation of a genetic map of T. timopheevii containing 1582 SNP markers, spread across 14 linkage groups representing each of the seven chromosomes of the At and G genomes of T. timopheevii. The genotyping of the hybrid lines was validated through fluorescence in situ hybridisation (FISH). Comparative analysis of the genetic map of T. timopheevii and the physical map of the hexaploid wheat genome showed that synteny between the two species is highly conserved at the macro-level and confirmed the presence of inter- and intra-genomic translocations within the At and G genomes of T. timopheevii that have been previously only detected through cytological techniques. CONCLUSIONS In this work, we report a set of SNP markers present on a high-throughput genotyping array, able to detect the presence of T. timopheevii in a hexaploid wheat background making it a potentially valuable tool for marker assisted selection (MAS) in wheat pre-breeding programs. These valuable resources of high-density molecular markers and wheat-T. timopheevii hybrid lines will greatly enhance the work being undertaken for wheat improvement through wild relative introgressions.
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Affiliation(s)
- Urmila Devi
- Division of Plant and Cop Sciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
| | - Surbhi Grewal
- Division of Plant and Cop Sciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
| | - Cai-Yun Yang
- Division of Plant and Cop Sciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
| | - Stella Hubbart-Edwards
- Division of Plant and Cop Sciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
| | - Duncan Scholefield
- Division of Plant and Cop Sciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
| | - Stephen Ashling
- Division of Plant and Cop Sciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
| | - Amanda Burridge
- Cereal Genomics Lab, Life Sciences Building, School of Biological Sciences, University of Bristol, Bristol, UK
| | - Ian P King
- Division of Plant and Cop Sciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
| | - Julie King
- Division of Plant and Cop Sciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK.
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19
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Cseh A, Yang C, Hubbart-Edwards S, Scholefield D, Ashling SS, Burridge AJ, Wilkinson PA, King IP, King J, Grewal S. Development and validation of an exome-based SNP marker set for identification of the St, J r and J vs genomes of Thinopyrym intermedium in a wheat background. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:1555-1570. [PMID: 30767030 PMCID: PMC6476854 DOI: 10.1007/s00122-019-03300-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 02/02/2019] [Indexed: 05/19/2023]
Abstract
KEY MESSAGE Cytogenetic analysis and array-based SNP genotyping of wheat- Th. intermedium introgression lines allowed identification of 634 chromosome-specific SNP markers across all twenty-one chromosomes of Th. intermedium (StJ r J vs , 2 n = 6 x = 42). Thinopyrum intermedium (2n = 6x = 42, StJrJvs) is one of the most promising reservoirs of useful genes including tolerance to abiotic stresses, perenniality and disease resistance not available in the cultivated bread wheat. The transfer of genetic diversity from wild species to wheat offers valuable responses to the effects of climate change. The new array-based single-nucleotide polymorphism (SNP) marker technology provides cheap and easy-to-use molecular markers for marker-assisted selection (MAS) in wheat breeding programmes. Here, we focus on the generation of a new chromosome-specific SNP marker set that can be used to characterize and identify the Th. intermedium chromosomes or chromosome segments transferred into wheat. A progressive investigation of marker development was conducted using 187 various newly developed wheat-Th. intermedium introgression lines and the Axiom® Wheat-Relative Genotyping array. We employed molecular cytogenetic techniques to clarify the genome constitution of the Th. intermedium parental lines and validated 634 chromosome-specific SNPs. Our data confirmed the allohexaploid nature of Th. intermedium and demonstrated that the St genome-specific GISH signal and markers are present at the centromeric regions of chromosomes 1Jvs, 2Jvs, 3Jvs and 7Jvs. The SNP markers presented here will be introduced into current wheat improvement programmes, offering a significant speed-up in wheat breeding and making it possible to deal with the transfer of the full genetic potential of Th. intermedium into wheat.
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Affiliation(s)
- Andras Cseh
- Nottingham BBSRC Wheat Research Centre, Division of Plant and Crop Sciences, School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, UK
- Molecular Breeding Department, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Caiyun Yang
- Nottingham BBSRC Wheat Research Centre, Division of Plant and Crop Sciences, School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | - Stella Hubbart-Edwards
- Nottingham BBSRC Wheat Research Centre, Division of Plant and Crop Sciences, School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | - Duncan Scholefield
- Nottingham BBSRC Wheat Research Centre, Division of Plant and Crop Sciences, School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | - Stephen S Ashling
- Nottingham BBSRC Wheat Research Centre, Division of Plant and Crop Sciences, School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | | | | | - Ian P King
- Nottingham BBSRC Wheat Research Centre, Division of Plant and Crop Sciences, School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | - Julie King
- Nottingham BBSRC Wheat Research Centre, Division of Plant and Crop Sciences, School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | - Surbhi Grewal
- Nottingham BBSRC Wheat Research Centre, Division of Plant and Crop Sciences, School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, UK.
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20
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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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21
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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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22
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Identification of COS markers specific for Thinopyrum elongatum chromosomes preliminary revealed high level of macrosyntenic relationship between the wheat and Th. elongatum genomes. PLoS One 2018; 13:e0208840. [PMID: 30540828 PMCID: PMC6291125 DOI: 10.1371/journal.pone.0208840] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 11/25/2018] [Indexed: 11/19/2022] Open
Abstract
Thinopyrum elongatum (Host) D.R. Dewey has served as an important gene source for wheat breeding improvement for many years. The exact characterization of its chromosomes is important for the detailed analysis of prebreeding materials produced with this species. The major aim of this study was to identify and characterize new molecular markers to be used for the rapid analysis of E genome chromatin in wheat background. Sixty of the 169 conserved orthologous set (COS) markers tested on diverse wheat-Th. elongatum disomic/ditelosomic addition lines were assigned to various Th. elongatum chromosomes and will be used for marker-assisted selection. The macrosyntenic relationship between the wheat and Th. elongatum genomes was investigated using EST sequences. Several rearrangements were revealed in homoeologous chromosome groups 2, 5, 6 and 7, while chromosomes 1 and 4 were conserved. Molecular cytogenetic and marker analysis showed the presence of rearranged chromosome involved in 6ES and 2EL arms in the 6E disomic addition line. The selected chromosome arm-specific COS markers will make it possible to identify gene introgressions in breeding programmes and will also be useful in the development of new chromosome-specific markers, evolutionary analysis and gene mapping.
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23
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Türkösi E, Darko E, Rakszegi M, Molnár I, Molnár-Láng M, Cseh A. Development of a new 7BS.7HL winter wheat-winter barley Robertsonian translocation line conferring increased salt tolerance and (1,3;1,4)-β-D-glucan content. PLoS One 2018; 13:e0206248. [PMID: 30395616 PMCID: PMC6218033 DOI: 10.1371/journal.pone.0206248] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/09/2018] [Indexed: 01/01/2023] Open
Abstract
Interspecific hybridization between bread wheat (Triticum aestivum, 2n = 42) and related species allows the transfer of agronomic and quality traits, whereby subsequent generations comprise an improved genetic background and can be directly applied in wheat breeding programmes. While wild relatives are frequently used as sources of agronomically favourable traits, cultivated species can also improve wheat quality and stress resistance. A salt-tolerant 'Asakaze'/'Manas' 7H disomic addition line (2n = 44) with elevated β-glucan content, but with low fertility and an unstable genetic background was developed in an earlier wheat-barley prebreeding programme. The aim of the present study was to take this hybridization programme further and transfer the favourable barley traits into a more stable genetic background. Taking advantage of the breakage-fusion mechanism of univalent chromosomes, the 'Rannaya' winter wheat 7B monosomic line was used as female partner to the 7H addition line male, leading to the development of a compensating wheat/barley Robertsonian translocation line (7BS.7HL centric fusion, 2n = 42) exhibiting higher salt tolerance and elevated grain β-glucan content. Throughout the crossing programme, comprising the F1-F4 generations, genomic in situ hybridization, fluorescence in situ hybridization and chromosome-specific molecular markers were used to trace and identify the wheat and barley chromatin. Investigations on salt tolerance during germination and on the (1,3;1,4)-β-D-glucan (mixed-linkage glucan [MLG]) content of the seeds confirmed the salt tolerance and elevated grain MLG content of the translocation line, which can be directly applied in current wheat breeding programmes.
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Affiliation(s)
- Edina Türkösi
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Eva Darko
- Department of Plant Physiology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Marianna Rakszegi
- Cereal Breeding Department, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - István Molnár
- Maize Breeding Department, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Márta Molnár-Láng
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - András Cseh
- Molecular Breeding Department, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
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24
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Said M, Hřibová E, Danilova TV, Karafiátová M, Čížková J, Friebe B, Doležel J, Gill BS, Vrána J. The Agropyron cristatum karyotype, chromosome structure and cross-genome homoeology as revealed by fluorescence in situ hybridization with tandem repeats and wheat single-gene probes. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:2213-2227. [PMID: 30069594 PMCID: PMC6154037 DOI: 10.1007/s00122-018-3148-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 07/23/2018] [Indexed: 05/04/2023]
Abstract
Fluorescence in situ hybridization with probes for 45 cDNAs and five tandem repeats revealed homoeologous relationships of Agropyron cristatum with wheat. The results will contribute to alien gene introgression in wheat improvement. Crested wheatgrass (Agropyron cristatum L. Gaertn.) is a wild relative of wheat and a promising source of novel genes for wheat improvement. To date, identification of A. cristatum chromosomes has not been possible, and its molecular karyotype has not been available. Furthermore, homoeologous relationship between the genomes of A. cristatum and wheat has not been determined. To develop chromosome-specific landmarks, A. cristatum genomic DNA was sequenced, and new tandem repeats were discovered. Their distribution on mitotic chromosomes was studied by fluorescence in situ hybridization (FISH), which revealed specific patterns for five repeats in addition to 5S and 45S ribosomal DNA and rye subtelomeric repeats pSc119.2 and pSc200. FISH with one tandem repeat together with 45S rDNA enabled identification of all A. cristatum chromosomes. To analyze the structure and cross-species homoeology of A. cristatum chromosomes with wheat, probes for 45 mapped wheat cDNAs covering all seven chromosome groups were localized by FISH. Thirty-four cDNAs hybridized to homoeologous chromosomes of A. cristatum, nine hybridized to homoeologous and non-homoeologous chromosomes, and two hybridized to unique positions on non-homoeologous chromosomes. FISH using single-gene probes revealed that the wheat-A. cristatum collinearity was distorted, and important structural rearrangements were observed for chromosomes 2P, 4P, 5P, 6P and 7P. Chromosomal inversions were found for pericentric region of 4P and whole chromosome arm 6PL. Furthermore, reciprocal translocations between 2PS and 4PL were detected. These results provide new insights into the genome evolution within Triticeae and will facilitate the use of crested wheatgrass in alien gene introgression into wheat.
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Affiliation(s)
- Mahmoud Said
- Institute of Experimental Botany, Center of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371, Olomouc, Czech Republic
- Field Crops Research Institute, Agricultural Research Centre, 9 Gamma Street, Giza, Cairo, 12619, Egypt
| | - Eva Hřibová
- Institute of Experimental Botany, Center of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371, Olomouc, Czech Republic
| | - Tatiana V Danilova
- Wheat Genetics Resource Center, Kansas State University, 1712 Claflin Road, 4024 Throckmorton PSC, Manhattan, KS, 66506, USA
| | - Miroslava Karafiátová
- Institute of Experimental Botany, Center of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371, Olomouc, Czech Republic
| | - Jana Čížková
- Institute of Experimental Botany, Center of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371, Olomouc, Czech Republic
| | - Bernd Friebe
- Wheat Genetics Resource Center, Kansas State University, 1712 Claflin Road, 4024 Throckmorton PSC, Manhattan, KS, 66506, USA
| | - Jaroslav Doležel
- Institute of Experimental Botany, Center of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371, Olomouc, Czech Republic
| | - Bikram S Gill
- Wheat Genetics Resource Center, Kansas State University, 1712 Claflin Road, 4024 Throckmorton PSC, Manhattan, KS, 66506, USA
| | - Jan Vrána
- Institute of Experimental Botany, Center of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371, Olomouc, Czech Republic.
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25
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Cui Y, Zhang Y, Qi J, Wang H, Wang RRC, Bao Y, Li X. Identification of chromosomes in Thinopyrum intermedium and wheat Th. intermedium amphiploids based on multiplex oligonucleotide probes. Genome 2018; 61:515-521. [DOI: 10.1139/gen-2018-0019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Synthesized oligonucleotides (oligos) can be used as effective probes similar to plasmid clones for chromosome identification in fluorescence in situ hybridization (FISH) analysis, making oligo FISH a simpler and more efficient molecular cytogenetic technique for studying plants. In this study, multiplex oligonucleotide probes, including pSc119.2-1, pAs1-4, (GAA)10, (AAC)6, and pTa71, were combined and used in FISH to identify chromosomes in common wheat, Thinopyrum intermedium, and a wheat – Th. intermedium amphiploid TE256-1. In comparison with general FISH probes, signals generated by the multiplex probes were more abundant, colorful, and characteristic. Combining the results of genomic in situ hybridization (GISH) with FISH, Th. intermedium chromosomes and alien chromosomes in TE256-1 could be classified and identified more precisely, especially the J- and Js-genome chromosomes. Moreover, based on the FISH results using multiplex probes, more structural variations in wheat chromosomes of TE256-1 were detected. The results indicated that multiplex oligo probes would have a wide range of application prospects in the creation and identification of wheat – Th. intermedium germplasms.
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Affiliation(s)
- Yu Cui
- State Key Laboratory of Crop Biology, Shandong Agriculture University, Tai’an, Shandong 271018, China
| | - Yanping Zhang
- College of Agronomy, Shandong Agriculture University, Tai’an, Shandong 271018, China
| | - Juan Qi
- State Key Laboratory of Crop Biology, Shandong Agriculture University, Tai’an, Shandong 271018, China
| | - Honggang Wang
- State Key Laboratory of Crop Biology, Shandong Agriculture University, Tai’an, Shandong 271018, China
- College of Agronomy, Shandong Agriculture University, Tai’an, Shandong 271018, China
| | - Richard R.-C. Wang
- United States Department of Agriculture – Agricultural Research Services, Forage and Range Research Laboratory, Logan, UT 84322-6300, USA
| | - Yinguang Bao
- College of Agronomy, Shandong Agriculture University, Tai’an, Shandong 271018, China
| | - Xingfeng Li
- State Key Laboratory of Crop Biology, Shandong Agriculture University, Tai’an, Shandong 271018, China
- College of Agronomy, Shandong Agriculture University, Tai’an, Shandong 271018, China
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26
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Li D, Li T, Wu Y, Zhang X, Zhu W, Wang Y, Zeng J, Xu L, Fan X, Sha L, Zhang H, Zhou Y, Kang H. FISH-Based Markers Enable Identification of Chromosomes Derived From Tetraploid Thinopyrum elongatum in Hybrid Lines. FRONTIERS IN PLANT SCIENCE 2018; 9:526. [PMID: 29765383 PMCID: PMC5938340 DOI: 10.3389/fpls.2018.00526] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/04/2018] [Indexed: 05/19/2023]
Abstract
Tetraploid Thinopyrum elongatum, which has superior abiotic stress tolerance characteristics, and exhibits resistance to stripe rust, powdery mildew, and Fusarium head blight, is a wild relative of wheat and a promising source of novel genes for wheat improvement. Currently, a high-resolution Fluorescence in situ hybridization (FISH) karyotype of tetraploid Th. elongatum is not available. To develop chromosome-specific FISH-based markers, the hexaploid Trititrigia 8801 and two accessions of tetraploid Th. elongatum were characterized by different repetitive sequences probes. We found that all E-genome chromosomes could be unambiguously identified using a combination of pSc119.2, pTa535, pTa71, and pTa713 repeats, and the E-genome chromosomes of the wild accessions and the partial amphiploid failed to exhibit any significant variation in the probe hybridization patterns. To verify the validation of these markers, the chromosome constitution of eight wheat- Th. elongatum hybrid derivatives were analyzed. We revealed that these probes could quickly detect wheat and tetraploid Th. elongatum chromosomes in hybrid lines. K16-712-1-2 was a 1E (1D) chromosome substitution line, K16-681-4 was a 2E disomic chromosome addition line, K16-562-3 was a 3E, 4E (3D, 4D) chromosome substitution line, K15-1033-8-2 contained one 4E, two 5E, and one 4ES⋅1DL Robertsonian translocation chromosome, and four other lines carried monosomic 4E, 5E, 6E, and 7E chromosome, respectively. Furthermore, the E-genome specific molecular markers analysis corresponded perfectly with the FISH results. The developed FISH markers will facilitate rapid identification of tetraploid Th. elongatum chromosomes in wheat improvement programs and allow appropriate alien chromosome transfer.
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Affiliation(s)
- Daiyan Li
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Tinghui Li
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Yanli Wu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Xiaohui Zhang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Wei Zhu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Yi Wang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Jian Zeng
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Lili Xu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Xing Fan
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Lina Sha
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Haiqin Zhang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Yonghong Zhou
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
- Joint International Research Laboratory of Crop Resources and Genetic Improvement, Sichuan Agricultural University, Chengdu, China
| | - Houyang Kang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
- Joint International Research Laboratory of Crop Resources and Genetic Improvement, Sichuan Agricultural University, Chengdu, China
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27
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Danilova TV, Friebe B, Gill BS, Poland J, Jackson E. Development of a complete set of wheat-barley group-7 Robertsonian translocation chromosomes conferring an increased content of β-glucan. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:377-388. [PMID: 29124282 DOI: 10.1007/s00122-017-3008-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 10/26/2017] [Indexed: 05/06/2023]
Abstract
A complete set of six compensating Robertsonian translocation chromosomes involving barley chromosome 7H and three chromosomes of hexaploid wheat was produced. Grain β-glucan content increased in lines containing 7HL. Many valuable genes for agronomic performance, disease resistance and increased yield have been transferred from relative species to wheat (Triticum aestivum L.) through whole-arm Robertsonian translocations (RobT). Although of a great value, the sets of available translocations from barley (Hordeum vulgare L.) are limited. Here, we present the production of a complete set of six compensating RobT chromosomes involving barley chromosome 7H and three group-7 chromosomes of wheat. The barley group-7 long-arm RobTs had a higher grain β-glucan content compared to the wheat control. The β-glucan levels varied depending on the temperature and were higher under hot conditions. Implicated in this increase, the barley cellulose synthase-like F6 gene (CslF6) responsible for β-glucan synthesis was physically mapped near the centromere in the long arm of barley chromosome 7H. Likewise, wheat CslF6 homoeologs were mapped near the centromere in the long arms of all group-7 wheat chromosomes. With the set of novel wheat-barley translocations, we demonstrate a valuable increase of β-glucan, along with a resource of genetic stocks that are likely to carry many other important genes from barley into wheat.
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Affiliation(s)
- Tatiana V Danilova
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA
| | - Bernd Friebe
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA.
| | - Bikram S Gill
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA
| | - Jesse Poland
- Department of Plant Pathology, Wheat Genetics Resource Center, Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS, 66506-5502, USA
| | - Eric Jackson
- General Mills NTS [AI]2 Lab, Minneapolis, MN, 55426, USA
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28
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Zhao L, Ning S, Yi Y, Zhang L, Yuan Z, Wang J, Zheng Y, Hao M, Liu D. Fluorescence in situ hybridization karyotyping reveals the presence of two distinct genomes in the taxon Aegilops tauschii. BMC Genomics 2018; 19:3. [PMID: 29291709 PMCID: PMC5748962 DOI: 10.1186/s12864-017-4384-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 12/15/2017] [Indexed: 11/23/2022] Open
Abstract
Background Aegilops tauschii is the donor of the bread wheat D genome. Based on spike morphology, the taxon has conventionally been subdivided into ssp. tauschii and ssp. strangulata. The present study was intended to address the poor match between this whole plant morphology-based subdivision and genetic relationships inferred from genotyping by fluorescence in situ hybridization karyotyping a set of 31 Ae. tauschii accessions. Results The distribution of sites hybridizing to the two probes oligo-pTa-535 and (CTT)10 split the Ae. tauschii accessions into two clades, designated Dt and Ds, which corresponded perfectly with a previously assembled phylogeny based on marker genotype. The Dt cluster was populated exclusively by ssp. tauschii accessions, while the Ds cluster harbored both ssp. strangulata and morphologically intermediate accessions. As a result, it is proposed that Ae. tauschii ssp. tauschii is restricted to carriers of the Dt karyotype: their spikelets are regularly spaced along the rachis, at least in the central portion of their spike. Accessions classified as Ae. tauschii ssp. strangulata carry the Ds karyotype; their spikelets are irregularly spaced. Based on this criterion, forms formerly classified as ssp. tauschii var. meyeri have been re-designated ssp. strangulata var. meyeri. Conclusions According to the reworking of the taxon, the bread wheat D genome was most probably donated by ssp. strangulata var. meyeri. Chromosomal differentiation reveals intra-species taxon of Ae. tauschii. Ae. tauschii ssp. tauschii has more distant relationship with breed wheat than ssp. strangulata and can be used for breeding improving effectively.
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Affiliation(s)
- Laibin Zhao
- Triticeae Research Institute, Sichuan Agricultural University, No. 211 Huiming Rd, Wenjiang District, Chengdu City, Sichuan province, 611130, People's Republic of China
| | - Shunzong Ning
- Triticeae Research Institute, Sichuan Agricultural University, No. 211 Huiming Rd, Wenjiang District, Chengdu City, Sichuan province, 611130, People's Republic of China
| | - Yingjin Yi
- Triticeae Research Institute, Sichuan Agricultural University, No. 211 Huiming Rd, Wenjiang District, Chengdu City, Sichuan province, 611130, People's Republic of China
| | - Lianquan Zhang
- Triticeae Research Institute, Sichuan Agricultural University, No. 211 Huiming Rd, Wenjiang District, Chengdu City, Sichuan province, 611130, People's Republic of China
| | - Zhongwei Yuan
- Triticeae Research Institute, Sichuan Agricultural University, No. 211 Huiming Rd, Wenjiang District, Chengdu City, Sichuan province, 611130, People's Republic of China
| | - Jirui Wang
- Triticeae Research Institute, Sichuan Agricultural University, No. 211 Huiming Rd, Wenjiang District, Chengdu City, Sichuan province, 611130, People's Republic of China.,Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural University, Yaan, Sichuan, 625014, China
| | - Youliang Zheng
- Triticeae Research Institute, Sichuan Agricultural University, No. 211 Huiming Rd, Wenjiang District, Chengdu City, Sichuan province, 611130, People's Republic of China.,Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural University, Yaan, Sichuan, 625014, China
| | - Ming Hao
- Triticeae Research Institute, Sichuan Agricultural University, No. 211 Huiming Rd, Wenjiang District, Chengdu City, Sichuan province, 611130, People's Republic of China.
| | - Dengcai Liu
- Triticeae Research Institute, Sichuan Agricultural University, No. 211 Huiming Rd, Wenjiang District, Chengdu City, Sichuan province, 611130, People's Republic of China. .,Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural University, Yaan, Sichuan, 625014, China.
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Danilova TV, Akhunova AR, Akhunov ED, Friebe B, Gill BS. Major structural genomic alterations can be associated with hybrid speciation in Aegilops markgrafii (Triticeae). THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 92:317-330. [PMID: 28776783 DOI: 10.1111/tpj.13657] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/21/2017] [Accepted: 07/31/2017] [Indexed: 05/19/2023]
Abstract
During evolutionary history many grasses from the tribe Triticeae have undergone interspecific hybridization, resulting in allopolyploidy; whereas homoploid hybrid speciation was found only in rye. Homoeologous chromosomes within the Triticeae preserved cross-species macrocolinearity, except for a few species with rearranged genomes. Aegilops markgrafii, a diploid wild relative of wheat (2n = 2x = 14), has a highly asymmetrical karyotype that is indicative of chromosome rearrangements. Molecular cytogenetics and next-generation sequencing were used to explore the genome organization. Fluorescence in situ hybridization with a set of wheat cDNAs allowed the macrostructure and cross-genome homoeology of the Ae. markgrafii chromosomes to be established. Two chromosomes maintained colinearity, whereas the remaining were highly rearranged as a result of inversions and inter- and intrachromosomal translocations. We used sets of barley and wheat orthologous gene sequences to compare discrete parts of the Ae. markgrafii genome involved in the rearrangements. Analysis of sequence identity profiles and phylogenic relationships grouped chromosome blocks into two distinct clusters. Chromosome painting revealed the distribution of transposable elements and differentiated chromosome blocks into two groups consistent with the sequence analyses. These data suggest that introgressive hybridization accompanied by gross chromosome rearrangements might have had an impact on karyotype evolution and homoploid speciation in Ae. markgrafii.
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Affiliation(s)
- Tatiana V Danilova
- Department of Plant Pathology, Kansas State University, Manhattan, KS, USA
| | - Alina R Akhunova
- Department of Plant Pathology, Kansas State University, Manhattan, KS, USA
| | - Eduard D Akhunov
- Department of Plant Pathology, Kansas State University, Manhattan, KS, USA
| | - Bernd Friebe
- Department of Plant Pathology, Kansas State University, Manhattan, KS, USA
| | - Bikram S Gill
- Department of Plant Pathology, Kansas State University, Manhattan, KS, USA
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30
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Liu R, Wang RRC, Yu F, Lu X, Dou Q. Characterization of genome in tetraploid StY species of Elymus (Triticeae: Poaceae) using sequential FISH and GISH. Genome 2017; 60:679-685. [PMID: 28666092 DOI: 10.1139/gen-2017-0046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Genomes of ten species of Elymus, either presumed or known as tetraploid StY, were characterized using fluorescence in situ hybridization (FISH) and genomic in situ hybridization (GISH). These tetraploid species could be grouped into three categories. Type I included StY genome reported species-Roegneria pendulina, R. nutans, R. glaberrima, R. ciliaris, and Elymus nevskii, and StY genome presumed species-R. sinica, R. breviglumis, and R. dura, whose genome could be separated into two sets based on different GISH intensities. Type I genome constitution was deemed as putative StY. The St genome were mainly characterized with intense hybridization with pAs1, fewer AAG sites, and linked distribution of 5S rDNA and 18S-26S rDNA, while the Y genome with less intense hybridization with pAs1, more varied AAG sites, and isolated distribution of 5S rDNA and 18S-26S rDNA. Nevertheless, further genomic variations were detected among the different StY species. Type II included E. alashanicus, whose genome could be easily separated based on GISH pattern. FISH and GISH patterns suggested that E. alashanicus comprised a modified St genome and an unknown genome. Type III included E. longearistatus, whose genome could not be separated by GISH and was designated as StlYl. Notably, a close relationship between Sl and Yl genomes was observed.
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Affiliation(s)
- Ruijuan Liu
- a Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China.,b University of Chinese Academy of Sciences, Beijing 100049, China
| | - Richard R-C Wang
- c U.S. Department of Agriculture, Agricultural Research Service, Forage and Range Research Laboratory, Utah State University, Logan, UT 84322-6300, USA
| | - Feng Yu
- a Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China.,b University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xingwang Lu
- a Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China.,b University of Chinese Academy of Sciences, Beijing 100049, China
| | - Quanwen Dou
- a Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China.,d Key Laboratory of Crop Molecular Breeding, Qinghai Province, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China
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31
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Dou Q, Yu F, Li Y, Zhao Y, Liu R. High molecular karyotype variation revealed in indigenous Elymus nutans in the Qinghai Plateau. PLANT DIVERSITY 2017; 39:117-122. [PMID: 30159500 PMCID: PMC6112273 DOI: 10.1016/j.pld.2017.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 05/10/2017] [Accepted: 05/10/2017] [Indexed: 06/08/2023]
Abstract
The karyotypes of 27 individuals of Elymus nutans from eight wild populations in the Qinghai Plateau were analyzed using sequential FISH and GISH. High FISH pattern polymorphism and karyotype variation were detected within and among populations. The chromosome variations were mainly characterized as repeat deletions and amplifications along with inter-genomic translocations. The chromosomes of the St and Y genomes demonstrated higher polymorphism than those of the H genome. Six different inter-genomic translocations were identified in 33.3% of individuals; type I and II translocations were detected with higher frequency. Further analysis revealed that type I and II translocations were distributed in different geographic regions. The origin of high karyotype variation of E. nutans in the Qinghai plateau is further discussed.
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Affiliation(s)
- Quanwen Dou
- Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810001, China
| | - Feng Yu
- Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810001, China
- Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuan Li
- Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810001, China
- Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanyan Zhao
- Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810001, China
- Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruijuan Liu
- Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810001, China
- Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
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32
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Linc G, Gaál E, Molnár I, Icsó D, Badaeva E, Molnár-Láng M. Molecular cytogenetic (FISH) and genome analysis of diploid wheatgrasses and their phylogenetic relationship. PLoS One 2017; 12:e0173623. [PMID: 28278169 PMCID: PMC5344461 DOI: 10.1371/journal.pone.0173623] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 02/23/2017] [Indexed: 11/22/2022] Open
Abstract
This paper reports detailed FISH-based karyotypes for three diploid wheatgrass species Agropyron cristatum (L.) Beauv., Thinopyrum bessarabicum (Savul.&Rayss) A. Löve, Pseudoroegneria spicata (Pursh) A. Löve, the supposed ancestors of hexaploid Thinopyrum intermedium (Host) Barkworth & D.R.Dewey, compiled using DNA repeats and comparative genome analysis based on COS markers. Fluorescence in situ hybridization (FISH) with repetitive DNA probes proved suitable for the identification of individual chromosomes in the diploid JJ, StSt and PP genomes. Of the seven microsatellite markers tested only the (GAA)n trinucleotide sequence was appropriate for use as a single chromosome marker for the P. spicata AS chromosome. Based on COS marker analysis, the phylogenetic relationship between diploid wheatgrasses and the hexaploid bread wheat genomes was established. These findings confirmed that the J and E genomes are in neighbouring clusters.
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Affiliation(s)
- Gabriella Linc
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
- * E-mail:
| | - Eszter Gaál
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - István Molnár
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Diana Icsó
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Ekaterina Badaeva
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
| | - Márta Molnár-Láng
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
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33
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Molnár I, Vrána J, Burešová V, Cápal P, Farkas A, Darkó É, Cseh A, Kubaláková M, Molnár-Láng M, Doležel J. Dissecting the U, M, S and C genomes of wild relatives of bread wheat (Aegilops spp.) into chromosomes and exploring their synteny with wheat. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2016; 88:452-467. [PMID: 27402341 DOI: 10.1111/tpj.13266] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 07/01/2016] [Accepted: 07/06/2016] [Indexed: 05/09/2023]
Abstract
Goat grasses (Aegilops spp.) contributed to the evolution of bread wheat and are important sources of genes and alleles for modern wheat improvement. However, their use in alien introgression breeding is hindered by poor knowledge of their genome structure and a lack of molecular tools. The analysis of large and complex genomes may be simplified by dissecting them into single chromosomes via flow cytometric sorting. In some species this is not possible due to similarities in relative DNA content among chromosomes within a karyotype. This work describes the distribution of GAA and ACG microsatellite repeats on chromosomes of the U, M, S and C genomes of Aegilops, and the use of microsatellite probes to label the chromosomes in suspension by fluorescence in situ hybridization (FISHIS). Bivariate flow cytometric analysis of chromosome DAPI fluorescence and fluorescence of FITC-labelled microsatellites made it possible to discriminate all chromosomes and sort them with negligible contamination by other chromosomes. DNA of purified chromosomes was used as a template for polymerase chain reation (PCR) using Conserved Orthologous Set (COS) markers with known positions on wheat A, B and D genomes. Wheat-Aegilops macrosyntenic comparisons using COS markers revealed significant rearrangements in the U and C genomes, while the M and S genomes exhibited structure similar to wheat. Purified chromosome fractions provided an attractive resource to investigate the structure and evolution of the Aegilops genomes, and the COS markers assigned to Aegilops chromosomes will facilitate alien gene introgression into wheat.
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Affiliation(s)
- István Molnár
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462, Martonvásár, Hungary
| | - Jan Vrána
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371, Olomouc, Czech Republic
| | - Veronika Burešová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371, Olomouc, Czech Republic
| | - Petr Cápal
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371, Olomouc, Czech Republic
| | - András Farkas
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462, Martonvásár, Hungary
| | - Éva Darkó
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462, Martonvásár, Hungary
| | - András Cseh
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462, Martonvásár, Hungary
| | - Marie Kubaláková
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371, Olomouc, Czech Republic
| | - Márta Molnár-Láng
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462, Martonvásár, Hungary
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371, Olomouc, Czech Republic
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Majka J, Majka M, Kwiatek M, Wiśniewska H. Similarities and differences in the nuclear genome organization within Pooideae species revealed by comparative genomic in situ hybridization (GISH). J Appl Genet 2016; 58:151-161. [PMID: 27743251 PMCID: PMC5391381 DOI: 10.1007/s13353-016-0369-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/26/2016] [Accepted: 09/28/2016] [Indexed: 01/29/2023]
Abstract
In this paper, we highlight the affinity between the genomes of key representatives of the Pooideae subfamily, revealed at the chromosomal level by genomic in situ hybridization (GISH). The analyses were conducted using labeled probes from each species to hybridize with chromosomes of every species used in this study based on a “round robin” rule. As a result, the whole chromosomes or chromosome regions were distinguished or variable types of signals were visualized to prove the different levels of the relationships between genomes used in this study. We observed the unexpected lack of signals in secondary constrictions of rye (RR) chromosomes probed by triticale (AABBRR) genomic DNA. We have also identified unlabeled chromosome regions, which point to species-specific sequences connected with disparate pathways of chromosome differentiation. Our results revealed a conservative character of coding sequence of 35S rDNA among selected species of the genera Aegilops, Brachypodium, Festuca, Hordeum, Lolium, Secale, and Triticum. In summary, we showed strong relationships in genomic DNA sequences between species which have been previously reported to be phylogenetically distant.
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Affiliation(s)
- Joanna Majka
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Maciej Majka
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Michał Kwiatek
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
| | - Halina Wiśniewska
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
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35
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Du P, Zhuang L, Wang Y, Yuan L, Wang Q, Wang D, Dawadondup, Tan L, Shen J, Xu H, Zhao H, Chu C, Qi Z. Development of oligonucleotides and multiplex probes for quick and accurate identification of wheat and Thinopyrum bessarabicum chromosomes. Genome 2016; 60:93-103. [PMID: 27936984 DOI: 10.1139/gen-2016-0095] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In comparison with general FISH for preparing probes in terms of time and cost, synthesized oligonucleotide (oligo hereafter) probes for FISH have many advantages such as ease of design, synthesis, and labeling. Low cost and high sensitivity and resolution of oligo probes greatly simplify the FISH procedure as a simple, fast, and efficient method of chromosome identification. In this study, we developed new oligo and oligo multiplex probes to accurately and efficiently distinguish wheat (Triticum aestivum, 2n = 6x, AABBDD) and Thinopyrum bessarabicum (2n = 2x = 14, JJ) chromosomes. The oligo probes contained more nucleotides or more repeat units that produced stronger signals for more efficient chromosome painting. Four Th. bessarabicum-specific oligo probes were developed based on genomic DNA sequences of Th. bessarabicum chromosome arm 4JL, and one of them (oligo DP4J27982) was pooled with the oligo multiplex #1 to simultaneously detect wheat and Th. bessarabicum chromosomes for quick and accurate identification of Chinese Spring (CS) - Th. bessarabicum alien chromosome introgression lines. Oligo multiplex #4 revealed chromosome variations among CS and eight wheat cultivars by a single round of FISH analysis. This research demonstrated the high efficiency of using oligos and oligo multiplexes in chromosome identification and manipulation.
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Affiliation(s)
- Pei Du
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
| | - Lifang Zhuang
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
| | - Yanzhi Wang
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
| | - Li Yuan
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
| | - Qing Wang
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
| | - Danrui Wang
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
| | - Dawadondup
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
| | - Lijun Tan
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian Shen
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
| | - Haibin Xu
- b Faculty of Biology and Environmental Science, Nanjing Forestry University, Nanjing 210037, China
| | - Han Zhao
- c Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Chenggen Chu
- d Monsanto Company, 21120 Hwy 30, Filer, ID 83328, USA
| | - Zengjun Qi
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement, JCIC-MCP, Nanjing Agricultural University, Nanjing 210095, China
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Türkösi E, Cseh A, Darkó É, Molnár-Láng M. Addition of Manas barley chromosome arms to the hexaploid wheat genome. BMC Genet 2016; 17:87. [PMID: 27328706 PMCID: PMC4915093 DOI: 10.1186/s12863-016-0393-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 06/07/2016] [Indexed: 01/04/2023] Open
Abstract
Background Cultivated barley belongs to the tertiary genepool of hexaploid wheat. Genes of interest can be transferred from barley into wheat through wide hybridization. The application of wheat-barley introgression lines could provide an excellent tool for the transfer of earliness, favourable amino acid composition, biotic stress resistance, abiotic stress tolerance, or good tillering ability into wheat. Results A set of 10 wheat-barley ditelosomic addition lines (2HS, 2HL, 3HS, 3HL, 4HS, 4HL, 6HS, 6HL, 7HS and 7HL) was developed from the progenies of an Asakaze/Manas wheat-barley hybrid produced in Martonvásár, Hungary. The addition lines were selected from self-fertilized plants of the BC2F2-BC2F4 generations using genomic in situ hybridization (GISH) and were identified by fluorescence in situ hybridization (FISH) with repetitive DNA probes [HvT01, (GAA)7 and centromere-specific (AGGGAG)4 probes]. The cytogenetic identification was confirmed using barley arm-specific SSR and STS markers. The ditelosomic additions were propagated in the phytotron and in the field, and morphological parameters (plant height, tillering, length of the main spike, number of seeds/spike and seeds/plant, and spike characteristics) were described. In addition, the salt stress response of the ditelosomic additions was determined. Conclusions The six-rowed winter barley cultivar Manas is much better adapted to Central European environmental conditions than the two-rowed spring barley Betzes previously used in wheat-barley crosses. The production of wheat-barley ditelosomic addition lines has a wide range of applications both for breeding (transfer of useful genes to the recipient species) and for basic research (mapping of barley genes, genetic and evolutionary studies and heterologous expression of barley genes in the wheat background). Electronic supplementary material The online version of this article (doi:10.1186/s12863-016-0393-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Edina Türkösi
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, H-2462, Martonvásár, P.O. Box 19, Hungary
| | - András Cseh
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, H-2462, Martonvásár, P.O. Box 19, Hungary
| | - Éva Darkó
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, H-2462, Martonvásár, P.O. Box 19, Hungary
| | - Márta Molnár-Láng
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, H-2462, Martonvásár, P.O. Box 19, Hungary.
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Kwiatek M, Belter J, Majka M, Wiśniewska H. Allocation of the S-genome chromosomes of Aegilops variabilis Eig. carrying powdery mildew resistance in triticale (× Triticosecale Wittmack). PROTOPLASMA 2016; 253:329-43. [PMID: 25868512 PMCID: PMC4783449 DOI: 10.1007/s00709-015-0813-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 03/25/2015] [Indexed: 05/15/2023]
Abstract
It has been hypothesized that the powdery mildew adult plant resistance (APR) controlled by the Pm13 gene in Aegilops longissima Schweinf. & Muschl. (S(l)S(l)) has been evolutionary transferred to Aegilops variabilis Eig. (UUSS). The molecular marker analysis and the visual evaluation of powdery mildew symptoms in Ae. variabilis and the Ae. variabilis × Secale cereale amphiploid forms (2n = 6x = 42, UUSSRR) showed the presence of product that corresponded to Pm13 marker and the lower infection level compared to susceptible model, respectively. This study also describes the transfer of Ae. variabilis Eig. (2n = 4x = 28, U(v)U(v)S(v)S(v)) chromosomes, carrying powdery mildew resistance, into triticale (× Triticosecale Wittm., 2n = 6x = 42, AABBRR) using Ae. variabilis × S. cereale amphiploid forms. The individual chromosomes of Ae. variabilis, triticale 'Lamberto' and hybrids were characterized by genomic and fluorescence in situ hybridization (GISH/FISH). The chromosome configurations of obtained hybrid forms were studied at first metaphase of meiosis of pollen mother cells (PMCs) using GISH. The statistical analysis showed that the way of S-genome chromosome pairing and transmission to subsequent hybrid generations was diploid-like and had no influence on chromosome pairing of triticale chromosomes. The cytogenetic study of hybrid forms were supported by the marker-assisted selection using Pm13 marker and visual evaluation of natural infection by Blumeria graminis, that allowed to select the addition or substitution lines of hybrids carrying chromosome 3S(v) which were tolerant to the powdery mildew infection.
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Affiliation(s)
- M Kwiatek
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
| | - J Belter
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
| | - M Majka
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
| | - H Wiśniewska
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
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Kwiatek M, Majka M, Ślusarkiewicz-Jarzina A, Ponitka A, Pudelska H, Belter J, Wiśniewska H. Transmission of the Aegilops ovata chromosomes carrying gametocidal factors in hexaploid triticale (×Triticosecale Wittm.) hybrids. J Appl Genet 2016; 57:305-15. [PMID: 26825077 PMCID: PMC4963450 DOI: 10.1007/s13353-015-0332-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 12/08/2015] [Accepted: 12/10/2015] [Indexed: 12/28/2022]
Abstract
The main aim of this work was to induce the chromosome rearrangements between Aegilops ovata (UUMM) and hexaploid triticale (AABBRR) by expression of the gametocidal factor located on the chromosome 4M. The Aegilops ovata × Secale cereale (UUMMRR) amphiploids and triticale ‘Moreno’ were used to produce hybrids by reciprocal crosses. Chromosome dynamics was observed in subsequent generations of hybrids during mitotic metaphase of root meristems and first metaphase of meiosis of pollen mother cells. Chromosomes were identified by genomic in situ hybridisation (GISH) and fluorescence in situ hybridisation (FISH) using pTa71, pTa791, pSc119.2 and pAs1 DNA probes. It has been shown that the origin of the genetic background had an influence on Aegilops chromosome transmission. Moreover, it has been reported that the preferential transmission of chromosome 4M appeared during both androgenesis and gynogenesis. It is also hypothesised that the expression of the triticale Gc gene suppressor had an influence on the semi-fertility of hybrids but did not inhibit the chromosome rearrangements. This paper also describes the double haploid production, which enabled to obtain plants with two identical copies of triticale chromosomes with translocations of Aegilops chromatin segments.
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Affiliation(s)
- M Kwiatek
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
| | - M Majka
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - A Ślusarkiewicz-Jarzina
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - A Ponitka
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - H Pudelska
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - J Belter
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - H Wiśniewska
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
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Tiwari VK, Wang S, Danilova T, Koo DH, Vrána J, Kubaláková M, Hribova E, Rawat N, Kalia B, Singh N, Friebe B, Doležel J, Akhunov E, Poland J, Sabir JSM, Gill BS. Exploring the tertiary gene pool of bread wheat: sequence assembly and analysis of chromosome 5M(g) of Aegilops geniculata. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2015; 84:733-46. [PMID: 26408103 DOI: 10.1111/tpj.13036] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/03/2015] [Accepted: 09/14/2015] [Indexed: 05/07/2023]
Abstract
Next-generation sequencing (NGS) provides a powerful tool for the discovery of important genes and alleles in crop plants and their wild relatives. Despite great advances in NGS technologies, whole-genome shotgun sequencing is cost-prohibitive for species with complex genomes. An attractive option is to reduce genome complexity to a single chromosome prior to sequencing. This work describes a strategy for studying the genomes of distant wild relatives of wheat by isolating single chromosomes from addition or substitution lines, followed by chromosome sorting using flow cytometry and sequencing of chromosomal DNA by NGS technology. We flow-sorted chromosome 5M(g) from a wheat/Aegilops geniculata disomic substitution line [DS5M(g) (5D)] and sequenced it using an Illumina HiSeq 2000 system at approximately 50 × coverage. Paired-end sequences were assembled and used for structural and functional annotation. A total of 4236 genes were annotated on 5M(g) , in close agreement with the predicted number of genes on wheat chromosome 5D (4286). Single-gene FISH indicated no major chromosomal rearrangements between chromosomes 5M(g) and 5D. Comparing chromosome 5M(g) with model grass genomes identified synteny blocks in Brachypodium distachyon, rice (Oryza sativa), sorghum (Sorghum bicolor) and barley (Hordeum vulgare). Chromosome 5M(g) -specific SNPs and cytogenetic probe-based resources were developed and validated. Deletion bin-mapped and ordered 5M(g) SNP markers will be useful to track 5M-specific introgressions and translocations. This study provides a detailed sequence-based analysis of the composition of a chromosome from a distant wild relative of bread wheat, and opens up opportunities to develop genomic resources for wild germplasm to facilitate crop improvement.
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Affiliation(s)
- Vijay K Tiwari
- Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University Manhattan, Manhattan, KS, 66506, USA
| | - Shichen Wang
- Department of Plant Pathology, Kansas State University, Manhattan, KS, 66502, USA
| | - Tatiana Danilova
- Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University Manhattan, Manhattan, KS, 66506, USA
| | - Dal Hoe Koo
- Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University Manhattan, Manhattan, KS, 66506, USA
| | - Jan Vrána
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, CZ 78371, Olomouc, Czech Republic
| | - Marie Kubaláková
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, CZ 78371, Olomouc, Czech Republic
| | - Eva Hribova
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, CZ 78371, Olomouc, Czech Republic
| | - Nidhi Rawat
- Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University Manhattan, Manhattan, KS, 66506, USA
| | - Bhanu Kalia
- Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University Manhattan, Manhattan, KS, 66506, USA
| | - Narinder Singh
- Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University Manhattan, Manhattan, KS, 66506, USA
| | - Bernd Friebe
- Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University Manhattan, Manhattan, KS, 66506, USA
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, CZ 78371, Olomouc, Czech Republic
| | - Eduard Akhunov
- Department of Plant Pathology, Kansas State University, Manhattan, KS, 66502, USA
| | - Jesse Poland
- Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University Manhattan, Manhattan, KS, 66506, USA
| | - Jamal S M Sabir
- Biotechnology Research Group, Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Bikram S Gill
- Department of Plant Pathology, Wheat Genetics Resource Center, Kansas State University Manhattan, Manhattan, KS, 66506, USA
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Molnár I, Vrána J, Farkas A, Kubaláková M, Cseh A, Molnár-Láng M, Doležel J. Flow sorting of C-genome chromosomes from wild relatives of wheat Aegilops markgrafii, Ae. triuncialis and Ae. cylindrica, and their molecular organization. ANNALS OF BOTANY 2015; 116:189-200. [PMID: 26043745 PMCID: PMC4512188 DOI: 10.1093/aob/mcv073] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 03/27/2015] [Accepted: 04/15/2015] [Indexed: 05/18/2023]
Abstract
BACKGROUND AND AIMS Aegilops markgrafii (CC) and its natural hybrids Ae. triuncialis (U(t)U(t)C(t)C(t)) and Ae. cylindrica (D(c)D(c)C(c)C(c)) represent a rich reservoir of useful genes for improvement of bread wheat (Triticum aestivum), but the limited information available on their genome structure and the shortage of molecular (cyto-) genetic tools hamper the utilization of the extant genetic diversity. This study provides the complete karyotypes in the three species obtained after fluorescent in situ hybridization (FISH) with repetitive DNA probes, and evaluates the potential of flow cytometric chromosome sorting. METHODS The flow karyotypes obtained after the analysis of 4',6-diamidino-2-phenylindole (DAPI)-stained chromosomes were characterized and the chromosome content of the peaks on the flow karyotypes was determined by FISH. Twenty-nine conserved orthologous set (COS) markers covering all seven wheat homoeologous chromosome groups were used for PCR with DNA amplified from flow-sorted chromosomes and genomic DNA. KEY RESULTS FISH with repetitive DNA probes revealed that chromosomes 4C, 5C, 7C(t), T6U(t)S.6U(t)L-5C(t)L, 1C(c) and 5D(c) could be sorted with purities ranging from 66 to 91 %, while the remaining chromosomes could be sorted in groups of 2-5. This identified a partial wheat-C-genome homology for group 4 and 5 chromosomes. In addition, 1C chromosomes were homologous with group 1 of wheat; a small segment from group 2 indicated 1C-2C rearrangement. An extensively rearranged structure of chromosome 7C relative to wheat was also detected. CONCLUSIONS The possibility of purifying Aegilops chromosomes provides an attractive opportunity to investigate the structure and evolution of the Aegilops C genome and to develop molecular tools to facilitate the identification of alien chromatin and support alien introgression breeding in bread wheat.
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Affiliation(s)
- István Molnár
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462 Martonvásár, Hungary and
| | - Jan Vrána
- Centre of the Region Hana for Biotechnological and Agricultural Research, Institute of Experimental Botany, Šlechtitelů 31, CZ-78371 Olomouc, Czech Republic
| | - András Farkas
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462 Martonvásár, Hungary and
| | - Marie Kubaláková
- Centre of the Region Hana for Biotechnological and Agricultural Research, Institute of Experimental Botany, Šlechtitelů 31, CZ-78371 Olomouc, Czech Republic
| | - András Cseh
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462 Martonvásár, Hungary and
| | - Márta Molnár-Láng
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462 Martonvásár, Hungary and
| | - Jaroslav Doležel
- Centre of the Region Hana for Biotechnological and Agricultural Research, Institute of Experimental Botany, Šlechtitelů 31, CZ-78371 Olomouc, Czech Republic
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Badaeva ED, Amosova AV, Goncharov NP, Macas J, Ruban AS, Grechishnikova IV, Zoshchuk SA, Houben A. A Set of Cytogenetic Markers Allows the Precise Identification of All A-Genome Chromosomes in Diploid and Polyploid Wheat. Cytogenet Genome Res 2015; 146:71-9. [PMID: 26160023 DOI: 10.1159/000433458] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2015] [Indexed: 11/19/2022] Open
Abstract
Karyotypes of 3 diploid wheat species containing different variants of the A-genome, Triticum boeoticum (A(b)), T. monococcum (A(b)), and T. urartu (A(u)), were examined using C-banding and FISH with DNA probes representing 5S and 45S rDNA families, the microsatellite sequences GAAn and GTTn, the already known satellite sequences pSc119.2, Spelt52, Fat, pAs1, and pTa535, and a newly identified repeat called Aesp_SAT86. The C-banding patterns of the 3 species in general were similar; differences were observed in chromosomes 4A and 6A. Besides 2 major 45S rDNA loci on chromosomes 1A and 5A, 2 minor polymorphic NORs were observed in the terminal part of 5AL and in the distal part of 6AS in all species. An additional minor locus was found in the distal part of 7A(b)L of T. boeoticum and T. monococcum, but not in T. urartu. Two 5S rDNA loci were observed in 1AS and 5AS. The pTa535 probe displayed species- and chromosome-specific hybridization patterns, allowing complete chromosome identification and species discrimination. The distribution of pTa535 on the A(u)-genome chromosomes was more similar to that on the A-genome chromosomes of T. dicoccoides and T. araraticum, thus confirming the origin of these genomes from T. urartu. The probe pAs1 allowed the identification of 4 chromosomes of T. urartu and 2 of T. boeoticum or T. monococcum. The Aesp_SAT86-derived patterns were polymorphic; main clusters were observed on chromosomes 1A(u )and 3A(u) of T. urartu and chromosomes 3A(b) and 6A(b) of T. boeoticum. Thus, a set of probes, pTa535, pAs1, GAAn and GTTn, pTa71, pTa794, and Aesp_SAT86, proved to be most informative for the analysis of A-genomes in diploid and polyploid wheat species.
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Affiliation(s)
- Ekaterina D Badaeva
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
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42
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Garbus I, Romero JR, Valarik M, Vanžurová H, Karafiátová M, Cáccamo M, Doležel J, Tranquilli G, Helguera M, Echenique V. Characterization of repetitive DNA landscape in wheat homeologous group 4 chromosomes. BMC Genomics 2015; 16:375. [PMID: 25962417 PMCID: PMC4440537 DOI: 10.1186/s12864-015-1579-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Accepted: 04/24/2015] [Indexed: 12/04/2022] Open
Abstract
Background The number and complexity of repetitive elements varies between species, being in general most represented in those with larger genomes. Combining the flow-sorted chromosome arms approach to genome analysis with second generation DNA sequencing technologies provides a unique opportunity to study the repetitive portion of each chromosome, enabling comparisons among them. Additionally, different sequencing approaches may produce different depth of insight to repeatome content and structure. In this work we analyze and characterize the repetitive sequences of Triticum aestivum cv. Chinese Spring homeologous group 4 chromosome arms, obtained through Roche 454 and Illumina sequencing technologies, hereinafter marked by subscripts 454 and I, respectively. Repetitive sequences were identified with the RepeatMasker software using the interspersed repeat database mips-REdat_v9.0p. The input sequences consisted of our 4DS454 and 4DL454 scaffolds and 4ASI, 4ALI, 4BSI, 4BLI, 4DSI and 4DLI contigs, downloaded from the International Wheat Genome Sequencing Consortium (IWGSC). Results Repetitive sequences content varied from 55% to 63% for all chromosome arm assemblies except for 4DLI, in which the repeat content was 38%. Transposable elements, small RNA, satellites, simple repeats and low complexity sequences were analyzed. SSR frequency was found one per 24 to 27 kb for all chromosome assemblies except 4DLI, where it was three times higher. Dinucleotides and trinucleotides were the most abundant SSR repeat units. (GA)n/(TC)n was the most abundant SSR except for 4DLI where the most frequently identified SSR was (CCG/CGG)n. Retrotransposons followed by DNA transposons were the most highly represented sequence repeats, mainly composed of CACTA/En-Spm and Gypsy superfamilies, respectively. This whole chromosome sequence analysis allowed identification of three new LTR retrotransposon families belonging to the Copia superfamily, one belonging to the Gypsy superfamily and two TRIM retrotransposon families. Their physical distribution in wheat genome was analyzed by fluorescent in situ hybridization (FISH) and one of them, the Carmen retrotransposon, was found specific for centromeric regions of all wheat chromosomes. Conclusion The presented work is the first deep report of wheat repetitive sequences analyzed at the chromosome arm level, revealing the first insight into the repeatome of T. aestivum chromosomes of homeologous group 4. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1579-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ingrid Garbus
- CERZOS (CCT - CONICET Bahía Blanca) and Universidad Nacional del Sur, Bahía Blanca, Argentina.
| | - José R Romero
- CERZOS (CCT - CONICET Bahía Blanca) and Universidad Nacional del Sur, Bahía Blanca, Argentina.
| | - Miroslav Valarik
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371, Olomouc, Czech Republic.
| | - Hana Vanžurová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371, Olomouc, Czech Republic.
| | - Miroslava Karafiátová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371, Olomouc, Czech Republic.
| | - Mario Cáccamo
- The Genome Analysis Centre (TGAC), Norwich Research Park, Norwich, NR4 7UH, UK.
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371, Olomouc, Czech Republic.
| | - Gabriela Tranquilli
- Instituto Recursos Biológicos, Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Buenos Aires, Argentina.
| | - Marcelo Helguera
- Estación Experimental Agropecuaria Marcos Juárez, Instituto Nacional de Tecnología Agropecuaria (INTA), Marcos Juárez, Córdoba, Argentina.
| | - Viviana Echenique
- CERZOS (CCT - CONICET Bahía Blanca) and Universidad Nacional del Sur, Bahía Blanca, Argentina.
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Kwiatek M, Majka M, Wiśniewska H, Apolinarska B, Belter J. Effective transfer of chromosomes carrying leaf rust resistance genes from Aegilops tauschii Coss. into hexaploid triticale (X Triticosecale Witt.) using Ae. tauschii × Secale cereale amphiploid forms. J Appl Genet 2015. [PMID: 25502891 DOI: 10.1007/s13353-014-0264-263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
This paper shows the results of effective uses of a molecular cytogenetics toolbox and molecular marker to transfer leaf rust resistance genes from Aegilops tauschii × Secale cereale (DDRR, 2n = 4x = 28) amphiploid forms to triticale cv. Bogo (AABBRR, 2n = 6x = 42). The molecular markers of resistance genes and in situ hybridization analysis of mitotic metaphase of root meristems confirmed the stable inheritance of chromosome 3D segments carrying Lr32 from the BC2F2 to the BC2F5 generation of (Ae. tauschii × S. cereale) × triticale hybrids. The chromosome pairing analysis during metaphase I of meiosis of BC2F4 and BC2F5 hybrids showed increasing regular bivalent formation of 3D chromosome pairs and decreasing number of univalents in subsequent generations. The results indicate that using amphiploid forms as a bridge between wild and cultivated forms can be a successful technology to transfer the D-genome chromatin carrying leaf rust resistance genes into triticale.
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Affiliation(s)
- Michał Kwiatek
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland,
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44
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Kwiatek M, Majka M, Wiśniewska H, Apolinarska B, Belter J. Effective transfer of chromosomes carrying leaf rust resistance genes from Aegilops tauschii Coss. into hexaploid triticale (X Triticosecale Witt.) using Ae. tauschii × Secale cereale amphiploid forms. J Appl Genet 2015; 56:163-8. [PMID: 25502891 PMCID: PMC4412281 DOI: 10.1007/s13353-014-0264-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 11/23/2014] [Accepted: 12/02/2014] [Indexed: 10/31/2022]
Abstract
This paper shows the results of effective uses of a molecular cytogenetics toolbox and molecular marker to transfer leaf rust resistance genes from Aegilops tauschii × Secale cereale (DDRR, 2n = 4x = 28) amphiploid forms to triticale cv. Bogo (AABBRR, 2n = 6x = 42). The molecular markers of resistance genes and in situ hybridization analysis of mitotic metaphase of root meristems confirmed the stable inheritance of chromosome 3D segments carrying Lr32 from the BC2F2 to the BC2F5 generation of (Ae. tauschii × S. cereale) × triticale hybrids. The chromosome pairing analysis during metaphase I of meiosis of BC2F4 and BC2F5 hybrids showed increasing regular bivalent formation of 3D chromosome pairs and decreasing number of univalents in subsequent generations. The results indicate that using amphiploid forms as a bridge between wild and cultivated forms can be a successful technology to transfer the D-genome chromatin carrying leaf rust resistance genes into triticale.
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Affiliation(s)
- Michał Kwiatek
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland
| | - Maciej Majka
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland
| | - Halina Wiśniewska
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland
| | - Barbara Apolinarska
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland
| | - Jolanta Belter
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland
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Türkösi E, Farkas A, Aranyi NR, Hoffmann B, Tóth V, Molnár-Láng M. Improvement of the agronomic traits of a wheat-barley centric fusion by introgressing the 3HS.3BL translocation into a modern wheat cultivar. Genome 2015; 57:601-7. [PMID: 25806585 DOI: 10.1139/gen-2014-0187] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The 3HS.3BL spontaneous Robertsonian translocation obtained from the progenies of wheat-barley (Chinese Spring × Betzes) hybrids backcrossed with wheat line Mv9kr1 was transferred into the modern Martonvásár wheat cultivar Mv Bodri. The translocation was identified with molecular cytogenetic methods. The inheritance of the translocation was traced using genomic in situ hybridization. Fluorescence in situ hybridization using barley subtelomeric (HvT01) and centromere-specific [(AGGGAG)4] repetitive DNA probes confirmed that the complete barley chromosome arm was involved in the Robertsonian translocation. The wheat-specific repetitive DNA probes identified the presence of the whole wheat genome, except the short arm of the 3B chromosome. Genotypes homozygous for the centric fusion were selected, after which morphological analysis was performed on the plants and the yield components were measured in the field during two consecutive vegetative seasons. The introgression of the 3HS.3BL translocation into the modern wheat cultivar Mv Bodri significantly reduced the plant height due to the incorporation of the dwarfing allele RhtD1b. The presence of the 3HS.3BL translocation in the Mv9kr1 and Mv Bodri wheat background improved tillering and seeds per plant productivity in field experiments carried out in Martonvásár and Keszthely, Hungary.
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Affiliation(s)
- Edina Türkösi
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, H-2462, Martonvásár, P.O. Box 19, Hungary
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Hao M, Luo J, Zeng D, Zhang L, Ning S, Yuan Z, Yan Z, Zhang H, Zheng Y, Feuillet C, Choulet F, Yen Y, Zhang L, Liu D. QTug.sau-3B is a major quantitative trait locus for wheat hexaploidization. G3 (BETHESDA, MD.) 2014; 4:1943-53. [PMID: 25128436 PMCID: PMC4199700 DOI: 10.1534/g3.114.013078] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 08/12/2014] [Indexed: 11/18/2022]
Abstract
Meiotic nonreduction resulting in unreduced gametes is thought to be the predominant mechanism underlying allopolyploid formation in plants. Until now, however, its genetic base was largely unknown. The allohexaploid crop common wheat (Triticum aestivum L.), which originated from hybrids of T. turgidum L. with Aegilops tauschii Cosson, provides a model to address this issue. Our observations of meiosis in pollen mother cells from T. turgidum×Ae. tauschii hybrids indicated that first division restitution, which exhibited prolonged cell division during meiosis I, was responsible for unreduced gamete formation. A major quantitative trait locus (QTL) for this trait, named QTug.sau-3B, was detected on chromosome 3B in two T. turgidum×Ae. tauschii haploid populations. This QTL is situated between markers Xgwm285 and Xcfp1012 and covered a genetic distance of 1 cM in one population. QTug.sau-3B is a haploid-dependent QTL because it was not detected in doubled haploid populations. Comparative genome analysis indicated that this QTL was close to Ttam-3B, a collinear homolog of tam in wheat. Although the relationship between QTug.sau-3B and Ttam requires further study, high frequencies of unreduced gametes may be related to reduced expression of Ttam in wheat.
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Affiliation(s)
- Ming Hao
- Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China
| | - Jiangtao Luo
- Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China
| | - Deying Zeng
- Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China
| | - Li Zhang
- Institute of Ecological Forestry, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China
| | - Shunzong Ning
- Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China
| | - Zhongwei Yuan
- Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China
| | - Zehong Yan
- Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China
| | - Huaigang Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, People's Republic of China
| | - Youliang Zheng
- Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China
| | - Catherine Feuillet
- INRA University Blaise Pascal, Joint Research Unit 1095 Genetics Diversity and Ecophysiology of Cereals, Clermont-Ferrand 63039, France
| | - Frédéric Choulet
- INRA University Blaise Pascal, Joint Research Unit 1095 Genetics Diversity and Ecophysiology of Cereals, Clermont-Ferrand 63039, France
| | - Yang Yen
- Department of Biology and Microbiology, South Dakota State University, Brookings, South Dakota 57007
| | - Lianquan Zhang
- Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China
| | - Dengcai Liu
- Triticeae Research Institute, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, People's Republic of China Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, People's Republic of China
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Mikó P, Megyeri M, Farkas A, Molnár I, Molnár-Láng M. Molecular cytogenetic identification and phenotypic description of a new synthetic amphiploid, Triticum timococcum (A tA tGGA mA m). GENETIC RESOURCES AND CROP EVOLUTION 2014; 62:55-66. [PMID: 26412939 PMCID: PMC4579857 DOI: 10.1007/s10722-014-0135-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 05/26/2014] [Indexed: 05/24/2023]
Abstract
A recently developed synthetic amphiploid, Triticum timococcum Kost., nom. nud. (2n = 6x = 42, AtAtGGAmAm) is described in the present study. This hexaploid taxon was developed by colchicine treatment in Martonvásár from the hybrid of a selected accession of Triticum timopheevii Zhuk. (2n = 4x = 28, AtAtGG) and a prebred semi-dwarf line of Triticum monococcum L. (2n = 2x = 14, AmAm). A detailed cytomolecular examination was carried out using the sequential multicolour fluorescence and genomic in situ hybridization techniques (FISH and mcGISH). It was proved that T. timococcum has 42 chromosomes originating from its parents. The chromosomes of the A genomes of T. monococcum and T. timopheevii could be distinguished in the amphiploid using FISH. The successful discrimination of the chromosomes was supported by the karyotypes of the three genomes and the successful optimization of the mcGISH technique for the A and G chromosomes achieved in the present study. A phenotypic evaluation was also carried out under natural and artificial growing conditions in 2012 and 2013. Based on the results, T. timococcum has intermediate characteristics in terms of spike (spikelet) shape and plant height, while it is similar to the female parent, T. timopheevii regarding pubescence. Like its parents, T. timococcum showed outstanding resistance to the main fungal diseases of wheat. T. timococcum headed later and developed longer and looser spikes, fewer tillers and only a third as many seeds than its parents. The third generation of T. timococcum was able to develop an acceptable number of seeds, even taking into account the reduced germination ability in the field.
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Affiliation(s)
- Péter Mikó
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, PO Box 19, 2462 Martonvásár, Hungary
| | - Mária Megyeri
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, PO Box 19, 2462 Martonvásár, Hungary
| | - András Farkas
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, PO Box 19, 2462 Martonvásár, Hungary
| | - István Molnár
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, PO Box 19, 2462 Martonvásár, Hungary
| | - Márta Molnár-Láng
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, PO Box 19, 2462 Martonvásár, Hungary
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48
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Molnár I, Kubaláková M, Šimková H, Farkas A, Cseh A, Megyeri M, Vrána J, Molnár-Láng M, Doležel J. Flow cytometric chromosome sorting from diploid progenitors of bread wheat, T. urartu, Ae. speltoides and Ae. tauschii. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2014; 127:1091-104. [PMID: 24553964 DOI: 10.1007/s00122-014-2282-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 02/03/2014] [Indexed: 05/10/2023]
Abstract
Chromosomes 5A (u) , 5S and 5D can be isolated from wild progenitors, providing a chromosome-based approach to develop tools for breeding and to study the genome evolution of wheat. The three subgenomes of hexaploid bread wheat originated from Triticum urartu (A(u)A(u)), from a species similar to Aegilops speltoides (SS) (progenitor of the B genome), and from Ae. tauschii (DD). Earlier studies indicated the potential of chromosome genomics to assist gene transfer from wild relatives of wheat and discover novel genes for wheat improvement. This study evaluates the potential of flow cytometric chromosome sorting in the diploid progenitors of bread wheat. Flow karyotypes obtained by analysing DAPI-stained chromosomes were characterized and the contents of the chromosome peaks were determined. FISH analysis with repetitive DNA probes proved that chromosomes 5A(u), 5S and 5D could be sorted with purities of 78-90 %, while the remaining chromosomes could be sorted in groups of three. Twenty-five conserved orthologous set (COS) markers covering wheat homoeologous chromosome groups 1-7 were used for PCR with DNA amplified from flow-sorted chromosomes and genomic DNA. These assays validated the cytomolecular results as follows: peak I on flow karyotypes contained chromosome groups 1, 4 and 6, peak II represented homoeologous group 5, while peak III consisted of groups 2, 3 and 7. The isolation of individual chromosomes of wild progenitors provides an attractive opportunity to investigate the structure and evolution of the polyploid genome and to deliver tools for wheat improvement.
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Affiliation(s)
- István Molnár
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, H-2462, Martonvásár, Hungary,
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49
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Georgieva M, Gecheff K. Molecular Cytogenetic Characterization of a New Reconstructed Barley Karyotype. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.5504/bbeq.2012.0126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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50
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Dulai S, Molnár I, Szopkó D, Darkó É, Vojtkó A, Sass-Gyarmati A, Molnár-Láng M. Wheat-Aegilops biuncialis amphiploids have efficient photosynthesis and biomass production during osmotic stress. JOURNAL OF PLANT PHYSIOLOGY 2014; 171:509-17. [PMID: 24655386 DOI: 10.1016/j.jplph.2013.11.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 11/12/2013] [Accepted: 11/18/2013] [Indexed: 05/09/2023]
Abstract
Osmotic stress responses of water content, photosynthetic parameters and biomass production were investigated in wheat-Aegilops biuncialis amphiploids and in wheat genotypes to clarify whether they can use to improve the drought tolerance of bread wheat. A decrease in the osmotic pressure of the medium resulted in considerable water loss, stomatal closure and a decreased CO2 assimilation rate for the wheat genotypes, while the changes in these parameters were moderate for the amphiploids. Maximal assimilation rate was maintained at high level even under severe osmotic stress in the amphiploids, while it decreased substantially in the wheat genotypes. Nevertheless, the effective quantum yield of PS II was higher and the quantum yield of non-photochemical quenching of PS II and PS I was lower for the amphiploids than for the wheat cultivars. Parallel with this, higher cyclic electron flow was detected in wheat than in the amphiploids. The elevated photosynthetic activity of amphiploids under osmotic stress conditions was manifested in higher biomass production by roots and shoots as compared to wheat genotypes. These results indicate that the drought-tolerant traits of Ae. biuncialis can be manifested in the wheat genetic background and these amphiploids are suitable genetic materials for improving drought tolerance of wheat.
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Affiliation(s)
- Sándor Dulai
- Department of Plant Physiology, Faculty of Science, Eszterházy College, P.O. Box 43, H-3301 Eger, Hungary.
| | - István Molnár
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Bruszvik út 2, Hungary
| | - Dóra Szopkó
- Department of Plant Physiology, Faculty of Science, Eszterházy College, P.O. Box 43, H-3301 Eger, Hungary
| | - Éva Darkó
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Bruszvik út 2, Hungary
| | - András Vojtkó
- Department of Botany, Faculty of Science, Eszterházy College, P.O. Box 43, H-3301 Eger, Hungary
| | - Andrea Sass-Gyarmati
- Department of Botany, Faculty of Science, Eszterházy College, P.O. Box 43, H-3301 Eger, Hungary
| | - Márta Molnár-Láng
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Bruszvik út 2, Hungary
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