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Tikhenko N, Haupt M, Fuchs J, Perovic D, Himmelbach A, Mascher M, Houben A, Rutten T, Nagel M, Tsvetkova NV, Sehmisch S, Börner A. Major chromosome rearrangements in intergeneric wheat × rye hybrids in compatible and incompatible crosses detected by GBS read coverage analysis. Sci Rep 2024; 14:11010. [PMID: 38745019 PMCID: PMC11094192 DOI: 10.1038/s41598-024-61622-1] [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: 10/01/2023] [Accepted: 05/07/2024] [Indexed: 05/16/2024] Open
Abstract
The presence of incompatibility alleles in primary amphidiploids constitutes a reproductive barrier in newly synthesized wheat-rye hybrids. To overcome this barrier, the genome stabilization process includes large-scale chromosome rearrangements. In incompatible crosses resulting in fertile amphidiploids, the elimination of one of the incompatible alleles Eml-A1 or Eml-R1b can occur already in the somatic tissue of the wheat × rye hybrid embryo. We observed that the interaction of incompatible loci Eml-A1 of wheat and Eml-R1b of rye after overcoming embryo lethality leads to hybrid sterility in primary triticale. During subsequent seed reproductions (R1, R2 or R3) most of the chromosomes of A, B, D and R subgenomes undergo rearrangement or eliminations to increase the fertility of the amphidiploid by natural selection. Genotyping-by-sequencing (GBS) coverage analysis showed that improved fertility is associated with the elimination of entire and partial chromosomes carrying factors that either cause the disruption of plant development in hybrid plants or lead to the restoration of the euploid number of chromosomes (2n = 56) in the absence of one of the incompatible alleles. Highly fertile offspring obtained in compatible and incompatible crosses can be successfully adapted for the production of triticale pre-breeding stocks.
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Affiliation(s)
- Natalia Tikhenko
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany
- Vavilov Institute of General Genetics Russian Academy of Sciences, Moscow, 119991, Russia
| | - Max Haupt
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany.
| | - Jörg Fuchs
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany
| | - Dragan Perovic
- Federal Research Centre for Cultivated Plants, Institute for Resistance Research and Stress Tolerance, Julius Kuehn Institute, Erwin-Baur Strasse 27, 06484, Quedlinburg, Germany
| | - Axel Himmelbach
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany
| | - Martin Mascher
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany.
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany.
| | - Andreas Houben
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany
| | - Twan Rutten
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany
| | - Manuela Nagel
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany
| | - Natalia V Tsvetkova
- Saint-Petersburg State University (SPbSU), St. Petersburg, 199034, Russia
- Vavilov Institute of General Genetics Russian Academy of Sciences, Moscow, 119991, Russia
| | - Stefanie Sehmisch
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany
| | - Andreas Börner
- ROR (Research Organization Registry), Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr 3, 06466, OT Gatersleben, Seeland, Germany.
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Betty-Heimann-Straße 3, 06120, Halle, Germany.
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Luo J, Zhao L, Zheng J, Li Y, Zhang L, Liu D, Pu Z, Hao M. Karyotype mosaicism in early generation synthetic hexaploid wheats. Genome 2020; 63:329-336. [PMID: 32197055 DOI: 10.1139/gen-2019-0148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It is known that both the number and the structure of somatic chromosomes can vary in early generation hexaploid wheats. The phenomenon is generally assumed to arise as a result of the meiotic instability characteristic of freshly created allopolyploids. Here, an analysis of the somatic karyotype of a set of 33 early generation synthetic hexaploid wheats has revealed that variation, taking the form of sub-chromosomal fragments and inter-chromosomal translocations, can also arise in somatic tissue. A possible explanation for the observations was that karyotypic instability in early generation hexaploid wheat probably occurs not just during sporogenesis, but also in somatic tissue. However, other factors such as the use of nitrous oxide during the experiments could also cause the chromosome variations, and additional experimentation would be required to determine the most likely.
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Affiliation(s)
- Jiangtao Luo
- Crop Research Institute, Sichuan Academy of Agricultural Science, Chengdu, Sichuan 610066, P.R. China.,Key Laboratory of Biology and Genetic Breeding in Wheat (Southwest), Ministry of Agriculture, Chengdu, Sichuan 610066, P.R. China
| | - Laibin Zhao
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Sichuan 611130, P.R. China
| | - Jianmin Zheng
- Crop Research Institute, Sichuan Academy of Agricultural Science, Chengdu, Sichuan 610066, P.R. China.,Key Laboratory of Biology and Genetic Breeding in Wheat (Southwest), Ministry of Agriculture, Chengdu, Sichuan 610066, P.R. China
| | - Yazhou Li
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Sichuan 611130, P.R. China
| | - Lianquan Zhang
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Sichuan 611130, P.R. China.,State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, P.R. China
| | - Dengcai Liu
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Sichuan 611130, P.R. China.,State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, P.R. China
| | - Zongjun Pu
- Crop Research Institute, Sichuan Academy of Agricultural Science, Chengdu, Sichuan 610066, P.R. China.,Key Laboratory of Biology and Genetic Breeding in Wheat (Southwest), Ministry of Agriculture, Chengdu, Sichuan 610066, P.R. China
| | - Ming Hao
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Sichuan 611130, P.R. China.,State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University at Chengdu, Wenjiang, Sichuan 611130, P.R. China
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3
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Polgári D, Mihók E, Sági L. Composition and random elimination of paternal chromosomes in a large population of wheat × barley (Triticum aestivum L. × Hordeum vulgare L.) hybrids. PLANT CELL REPORTS 2019; 38:767-775. [PMID: 30953138 PMCID: PMC6531609 DOI: 10.1007/s00299-019-02405-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 03/19/2019] [Indexed: 05/27/2023]
Abstract
Statistical analysis of the chromosomal composition in a population of 210 primary plants regenerated from two intergeneric wheat-barley cross combinations revealed the random nature of uniparental elimination for barley chromosomes. Uniparental chromosome elimination is a common process in interspecific and intergeneric cereal hybrids. To characterize the frequency of paternal chromosomes, a population of 218 independent green plants was generated from two wheat (♀) × barley (♂) cross combinations via embryo rescue. The chromosomal composition of 210 primary plants was analyzed with chromosome-specific DNA markers representing all seven barley chromosomes. The analysis revealed an equal proportion of haploid and full hybrids (20.5% and 19.5%, respectively), while the rest of the population contained hypoploids (partial hybrids) with no preference for any possible numbers (one to six) of barley chromosome additions. Contrary to the previous reports, there was no statistical bias or preferential elimination for any individual barley chromosome (1H-7H) in this population. The reasons for the apparent contradiction and the implications of the above findings for cereal breeding are discussed.
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Affiliation(s)
- Dávid Polgári
- Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, 2462, Hungary
- Szent István University, Gödöllő, 2100, Hungary
| | - Edit Mihók
- Szent István University, Gödöllő, 2100, Hungary
| | - László Sági
- Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, 2462, Hungary.
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Li D, Long D, Li T, Wu Y, Wang Y, Zeng J, Xu L, Fan X, Sha L, Zhang H, Zhou Y, Kang H. Cytogenetics and stripe rust resistance of wheat- Thinopyrum elongatum hybrid derivatives. Mol Cytogenet 2018; 11:16. [PMID: 29441130 PMCID: PMC5800275 DOI: 10.1186/s13039-018-0366-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 01/31/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Amphidiploids generated by distant hybridization are commonly used as genetic bridge to transfer desirable genes from wild wheat species into cultivated wheat. This method is typically used to enhance the resistance of wheat to biotic or abiotic stresses, and to increase crop yield and quality. Tetraploid Thinopyrum elongatum exhibits strong adaptability, resistance to stripe rust and Fusarium head blight, and tolerance to salt, drought, and cold. RESULTS In the present study, we produced hybrid derivatives by crossing and backcrossing the Triticum durum-Th. elongatum partial amphidiploid (Trititrigia 8801, 2n = 6× = 42, AABBEE) with wheat cultivars common to the Sichuan Basin. By means of cytogenetic and disease resistance analyses, we identified progeny harboring alien chromosomes and measured their resistance to stripe rust. Hybrid progenies possessed chromosome numbers ranging from 40 to 47 (mean = 42.72), with 40.0% possessing 42 chromosomes. Genomic in situ hybridization revealed that the number of alien chromosomes ranged from 1 to 11. Out of the 50 of analyzed lines, five represented chromosome addition (2n = 44 = 42 W + 2E) and other five were chromosome substitution lines (2n = 42 = 40 W + 2E). Importantly, a single chromosome derived from wheat-Th. elongatum intergenomic Robertsonian translocations chromosome was occurred in 12 lines. Compared with the wheat parental cultivars ('CN16' and 'SM482'), the majority (70%) of the derivative lines were highly resistant to strains of stripe rust pathogen known to be prevalent in China. CONCLUSION The findings suggest that these hybrid-derivative lines with stripe rust resistance could potentially be used as germplasm sources for further wheat improvement.
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Affiliation(s)
- Daiyan Li
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Dan Long
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Tinghui Li
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Yanli Wu
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Yi Wang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Jian Zeng
- College of Resources, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Lili Xu
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Xing Fan
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Lina Sha
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Haiqin Zhang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Yonghong Zhou
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
| | - Houyang Kang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, Sichuan 611130 China
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Kang H, Wang H, Huang J, Wang Y, Li D, Diao C, Zhu W, Tang Y, Wang Y, Fan X, Zeng J, Xu L, Sha L, Zhang H, Zhou Y. Divergent Development of Hexaploid Triticale by a Wheat - Rye -Psathyrostachys huashanica Trigeneric Hybrid Method. PLoS One 2016; 11:e0155667. [PMID: 27182983 PMCID: PMC4868327 DOI: 10.1371/journal.pone.0155667] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/01/2016] [Indexed: 11/19/2022] Open
Abstract
Hexaploid triticale is an important forage crop and a promising energy plant. Some forms were previously reported for developing the hexaploid triticale, such as crossing tetraploid wheat or hexaploid wheat with rye, crossing hexaploid triticale and/or hexaploid wheat with octoploid triticale, and spontaneously appearing in the selfed progenies of octoploid triticale. In the present study, we developed an effective method for production of diverse types of hexaploid triticale via wheat—rye—Psathyrostachys huashanica trigeneric hybrid. Genomic in situ hybridization (GISH) and fluorescence in situ hybridization (FISH) karyotyping revealed that D genome chromosomes were completely eliminated and the whole A, B, and R genome chromosomes were retained in three lines. More interestingly, the composite genome of the line K14-489-2 consisted of complete A and B genomes and chromosomes 1D, 2R, 3R, 4R, 5R, 6R, and 7R, that of line K14-491-2 was 12 A-genome (1A-6A), 14 B-genome (1B-7B), 12 R-genome (1R-3R, 5R-7R), and chromosomes 1D and 3D, and that of the line K14-547-1 had 26A/B and 14R chromosomes, plus one pair of centric 6BL/2DS translocations. This finding implies that some of D genome chromosomes can be spontaneously and stably incorporated into the hexaploid triticale. Additionally, a variety of high-molecular-weight glutenin subunits (HMW-GS) compositions were detected in the six hexaploid triticale lines, respectively. Besides, compared with its recurrent triticale parent Zhongsi828, these lines showed high level of resistance to stripe rust (Puccinia striiformis f. sp. tritici, Pst) pathogens prevalent in China, including V26/Gui 22. These new hexaploid triticales not only enhanced diversification of triticale but also could be utilized as valuable germplasm for wheat improvement.
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Affiliation(s)
- Houyang Kang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Hao Wang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Juan Huang
- Dazhou Institute of Agricultural Science, 188 Jianmin Road, Dazhou, 635000, Sichuan, China
| | - Yujie Wang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Daiyan Li
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Chengdou Diao
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Wei Zhu
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Yao Tang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Yi Wang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Xing Fan
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Jian Zeng
- College of Resources, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Lili Xu
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Lina Sha
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Haiqin Zhang
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
| | - Yonghong Zhou
- Triticeae Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, Chengdu, 611130, Sichuan, China
- * E-mail:
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6
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Tissue-specific genome instability in synthetic interspecific hybrids of Pennisetum purpureum (Napier grass) and Pennisetum glaucum (pearl millet) is caused by micronucleation. Chromosome Res 2016; 24:285-97. [DOI: 10.1007/s10577-016-9521-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 03/18/2016] [Accepted: 03/23/2016] [Indexed: 10/22/2022]
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Li H, Guo X, Wang C, Ji W. Spontaneous and divergent hexaploid triticales derived from common wheat × rye by complete elimination of D-genome chromosomes. PLoS One 2015; 10:e0120421. [PMID: 25781330 PMCID: PMC4364014 DOI: 10.1371/journal.pone.0120421] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 01/22/2015] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Hexaploid triticale could be either synthesized by crossing tetraploid wheat with rye, or developed by crossing hexaploid wheat with a hexaploid triticale or an octoploid triticale. METHODOLOGY/PRINCIPAL FINDINGS Here two hexaploid triticales with great morphologic divergence derived from common wheat cultivar M8003 (Triticum aestivum L.) × Austrian rye (Secale cereale L.) were reported, exhibiting high resistance for powdery mildew and stripe rust and potential for wheat improvement. Sequential fluorescence in situ hybridization (FISH) and genomic in situ hybridization (GISH) karyotyping revealed that D-genome chromosomes were completely eliminated and the whole A-genome, B-genome and R-genome chromosomes were retained in both lines. Furthermore, plentiful alterations of wheat chromosomes including 5A and 7B were detected in both triticales and additionally altered 5B, 7A chromosome and restructured chromosome 2A was assayed in N9116H and N9116M, respectively, even after selfing for several decades. Besides, meiotic asynchrony was displayed and a variety of storage protein variations were assayed, especially in the HMW/LMW-GS region and secalins region in both triticales. CONCLUSION This study confirms that whole D-genome chromosomes could be preferentially eliminated in the hybrid of common wheat × rye, "genome shock" was accompanying the allopolyploidization of nascent triticales, and great morphologic divergence might result from the genetic variations. Moreover, new hexaploid triticale lines contributing potential resistance resources for wheat improvement were produced.
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Affiliation(s)
- Hao Li
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A & F University, Yangling, Shaanxi, China
| | - Xiaoxue Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A & F University, Yangling, Shaanxi, China
| | - Changyou Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A & F University, Yangling, Shaanxi, China
| | - Wanquan Ji
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A & F University, Yangling, Shaanxi, China
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Shpylchyn VV, Antonyuk MZ, Ternovska TK. Genetic analysis of artificial Triticinae amphidiploid Aurotica based on the glaucousness trait. CYTOL GENET+ 2014. [DOI: 10.3103/s0095452714050107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fu SL, Yang MY, Ren ZL, Yan BJ, Tang ZX. Abnormal mitosis induced by wheat-rye 1R monosomic addition lines. Genome 2013; 57:21-8. [PMID: 24564212 DOI: 10.1139/gen-2013-0115] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Octoploid triticale were derived from common wheat (Triticum aestivum L. 'Mianyang11') × rye (Secale cereale L. 'Kustro'), and some progeny were obtained by the backcrossing of triticale with 'Mianyang11' followed by self-fertilization. In situ hybridization using rye genomic DNA and repetitive sequences pAs1 and pSc119.2 as probes was used to analyze the mitotic chromosomes of these progeny. Three wheat-rye 1R monosomic addition lines and a wheat line (12FT-1685) containing a 1R and a 1BL.1RS translocation chromosome were identified. Abnormal mitosis was observed in the two lines. During mitosis of a 1R monosomic addition line (3-8-20-1R-2), lagging chromosomes, micronuclei, chromosomal bridges, and the one pole segregation of 1R chromosome were observed. Abnormal mitotic behaviour of chromosomes was also observed in some of the self-progeny plants of lines 12FT-1685 and 3-8-20-1R-2. These progeny contained 1R chromosome or 1R chromosome arm. In addition, 4B chromosomes were absent from one of the progeny of 3-8-20-1R-2. This abnormal mitotic behaviour of chromosomes was not observed in two other 1R monosomic addition lines. These results indicate that a single 1R chromosome added to wheat might cause abnormal mitotic behaviour of both wheat and rye chromosomes and different genetic variations might occurr among the sibling 1R monosomic addition lines.
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Affiliation(s)
- Shu-Lan Fu
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agriculture University, Wenjiang, Chengdu, Sichuan 611130, China
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Fu S, Yang M, Fei Y, Tan F, Ren Z, Yan B, Zhang H, Tang Z. Alterations and abnormal mitosis of wheat chromosomes induced by wheat-rye monosomic addition lines. PLoS One 2013; 8:e70483. [PMID: 23936213 PMCID: PMC3728071 DOI: 10.1371/journal.pone.0070483] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 06/19/2013] [Indexed: 11/18/2022] Open
Abstract
Background Wheat-rye addition lines are an old topic. However, the alterations and abnormal mitotic behaviours of wheat chromosomes caused by wheat-rye monosomic addition lines are seldom reported. Methodology/Principal Findings Octoploid triticale was derived from common wheat T. aestivum L. ‘Mianyang11’×rye S. cereale L. ‘Kustro’ and some progeny were obtained by the controlled backcrossing of triticale with ‘Mianyang11’ followed by self-fertilization. Genomic in situ hybridization (GISH) using rye genomic DNA and fluorescence in situ hybridization (FISH) using repetitive sequences pAs1 and pSc119.2 as probes were used to analyze the mitotic chromosomes of these progeny. Strong pSc119.2 FISH signals could be observed at the telomeric regions of 3DS arms in ‘Mianyang11’. However, the pSc119.2 FISH signals were disappeared from the selfed progeny of 4R monosomic addition line and the changed 3D chromosomes could be transmitted to next generation stably. In one of the selfed progeny of 7R monosomic addition line, one 2D chromosome was broken and three 4A chromosomes were observed. In the selfed progeny of 6R monosomic addition line, structural variation and abnormal mitotic behaviour of 3D chromosome were detected. Additionally, 1A and 4B chromosomes were eliminated from some of the progeny of 6R monosomic addition line. Conclusions/Significance These results indicated that single rye chromosome added to wheat might cause alterations and abnormal mitotic behaviours of wheat chromosomes and it is possible that the stress caused by single alien chromosome might be one of the factors that induced karyotype alteration of wheat.
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Affiliation(s)
- Shulan Fu
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, People’s Republic of China
- * E-mail: (SLF); (ZXT)
| | - Manyu Yang
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, People’s Republic of China
| | - Yunyan Fei
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, People’s Republic of China
| | - Feiquan Tan
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, People’s Republic of China
| | - Zhenglong Ren
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, People’s Republic of China
| | - Benju Yan
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, People’s Republic of China
| | - Huaiyu Zhang
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, People’s Republic of China
| | - Zongxiang Tang
- State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, People’s Republic of China
- * E-mail: (SLF); (ZXT)
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