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Tytuł:
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Frequent numerical and structural chromosome changes in early generations of synthetic hexaploid wheat.
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Autorzy:
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Zhang S; State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing 210095, China.
Du P; Henan Academy of Crop Molecular Breeding, Henan Academy of Agricultural Sciences/Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture/Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou, Henan 450002, China.
Lu X; State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing 210095, China.
Fang J; State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing 210095, China.
Wang J; State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing 210095, China.
Chen X; State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing 210095, China.
Chen J; State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing 210095, China.
Wu H; State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing 210095, China.
Yang Y; College of Life Sciences, Zaozhuang University, Zaozhuang 277160, China.
Tsujimoto H; Arid Land Research Center, Tottori University, Hamasaka, Tottori 680-0001, Japan.
Chu C; USDA - ARS, Edward T. Schafer Agricultural Research Center, Fargo, ND 58102, USA.
Qi Z; State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing 210095, China.
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Źródło:
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Genome [Genome] 2022 Apr; Vol. 65 (4), pp. 205-217. Date of Electronic Publication: 2021 Dec 16.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: 2011- : Ottawa, ON : Canadian Science Publishing
Original Publication: Ottawa, Canada : National Research Council of Canada, c1987-
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MeSH Terms:
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Polyploidy*
Triticum*/genetics
Chromosomes, Plant/genetics ; Genetic Variation ; Genome, Plant ; In Situ Hybridization, Fluorescence
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Contributed Indexing:
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Keywords: Aegilops tauschii; FISH employant un multiplexe de sondes oligonucléotidiques; Triticum aestivum; Triticum turgidum; chromosome evolution; oligonucleotide probe multiplex FISH; évolution des chromosomes
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Entry Date(s):
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Date Created: 20211216 Date Completed: 20220405 Latest Revision: 20220405
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Update Code:
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20240105
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DOI:
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10.1139/gen-2021-0074
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PMID:
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34914567
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Modern hexaploid wheat ( Triticum aestivum L.; AABBDD) has evolved from a hybrid of tetraploid wheat (closely related to Triticum turgidum L. ssp. durum (Desf.) Husn., AABB) and goatgrass ( Aegilops tauschii Coss., DD). Variations in chromosome structure and ploidy have played important roles in wheat evolution. How these variations occur and their role in expanding the genetic diversity of modern wheat remain largely unknown. Synthetic hexaploid wheat (SHW) can be used to investigate chromosome variations that occur during the early generations of existence. SHW lines derived by crossing durum wheat 'Langdon' with 12 Ae. tauschii accessions were analyzed using oligonucleotide probe multiplex fluorescence in situ hybridization (FISH) of metaphase chromosomes and SNP markers. Cluster analysis based on SNP markers categorizes them into three groups. Among 702 plants from the S 8 and S 9 generations, 415 (59.12%) carried chromosome variations involving all 21 chromosomes, but with different frequencies for each chromosome and sub-genome. Total chromosome variation frequencies varied between lines, but there was no significant difference among the three groups. The non-random chromosome variations in the SHW lines detected in this study may indicate that similar variations occurred in the early stages of wheat polyploidization and played important roles in wheat evolution.
