Knowledge Management System of Northwest Institute of Plateau Biology, CAS
| Dissection of rye B chromosomes, and nondisjunction properties of the dissected segments in a common wheat background | |
| Endo, Takashi Ryu1; Nasuda, Shuhei1; Jones, Neil2; Dou, Quanwen3; Akahori, Atsushi4; Wakimoto, Munenori4; Tanaka, Hiroyuki4; Niwa, Katsumasa5; Tsujimoto, Hishashi4 | |
| 2008-02-01 | |
| 发表期刊 | GENES & GENETIC SYSTEMS
 |
| 卷号 | 83期号:1页码:23-30 |
| 文章类型 | Article |
| 摘要 | The rye B chromosome is a supernumerary chromosome that increases in number in its host by directed postmeiotic drive. Two types of rye B chromosomes that had been introduced into common wheat were dissected into separate segments by the gametocidal system to produce a number of rearranged B chromosomes, such as telosomes, terminal deletions and translocations with wheat chromosomes. A total of 13 dissected B chromosomes were isolated in common wheat, and were investigated for their nondisjunction. properties. Rearranged B chromosomes, separated from their B-specific repetitive sequences on the distal part of the long arm, did not undergo nondisjunction, and neither did a translocated wheat chromosome carrying a long-arm distal segment containing the B-specific repetitive sequences. However, such rearranged B chromosomes, missing their B-specific sequences could undergo nondisjunction when they coexisted with the standard B chromosome or a wheat chromosome carrying the B-specific sequences. Deficiencies of the short arm did not completely abolish the nondisjunction properties of the B chromosome, but did reduce the frequency of nondisjunction. These results confirmed previous suggestions that the directed nondisjunction of the rye B chromosome is controlled by two elements, pericentromeric sticking sites and a trans-acting element carried at the distal region of the long arm of the B chromosome. Additionally, it is now shown that the distal region of the long arm of the B chromosome which provides this function is that which carries the B-specific repetitive sequences.; The rye B chromosome is a supernumerary chromosome that increases in number in its host by directed postmeiotic drive. Two types of rye B chromosomes that had been introduced into common wheat were dissected into separate segments by the gametocidal system to produce a number of rearranged B chromosomes, such as telosomes, terminal deletions and translocations with wheat chromosomes. A total of 13 dissected B chromosomes were isolated in common wheat, and were investigated for their nondisjunction. properties. Rearranged B chromosomes, separated from their B-specific repetitive sequences on the distal part of the long arm, did not undergo nondisjunction, and neither did a translocated wheat chromosome carrying a long-arm distal segment containing the B-specific repetitive sequences. However, such rearranged B chromosomes, missing their B-specific sequences could undergo nondisjunction when they coexisted with the standard B chromosome or a wheat chromosome carrying the B-specific sequences. Deficiencies of the short arm did not completely abolish the nondisjunction properties of the B chromosome, but did reduce the frequency of nondisjunction. These results confirmed previous suggestions that the directed nondisjunction of the rye B chromosome is controlled by two elements, pericentromeric sticking sites and a trans-acting element carried at the distal region of the long arm of the B chromosome. Additionally, it is now shown that the distal region of the long arm of the B chromosome which provides this function is that which carries the B-specific repetitive sequences. |
| 关键词 | b Chromosome Dissection Gametocidal Chromosome Nondisjunction Rye |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科领域 | 生物化学 ; 分子生物学 |
| 关键词[WOS] | GAMETOCIDAL CHROMOSOME ; ACCESSORY CHROMOSOMES ; REPEATED SEQUENCES ; SATELLITE DNA ; BARLEY ; IDENTIFICATION ; GENOME ; INDUCTION ; PLANTS ; FAMILY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Biochemistry & Molecular Biology ; Genetics & Heredity |
| WOS类目 | Biochemistry & Molecular Biology ; Genetics & Heredity |
| WOS记录号 | WOS:000255579600003 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.75.249.4/handle/363003/1219 |
| 专题 | 中国科学院西北高原生物研究所 |
| 作者单位 | 1.Kyoto Univ, Grad Sch Agr, Kyoto 6068502, Japan 2.Aberystwyth Univ, Inst Biol Sci, Aberystwyth SY23 3DA, Dyfed, Wales 3.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Qinghai, Peoples R China 4.Tottori Univ, Fac Agr, Tottori 6808550, Japan 5.Tokyo Univ Agr, Fac Agr, Atsugi, Kanagawa 2430034, Japan |
| 推荐引用方式 GB/T 7714 | Endo, Takashi Ryu,Nasuda, Shuhei,Jones, Neil,et al. Dissection of rye B chromosomes, and nondisjunction properties of the dissected segments in a common wheat background[J]. GENES & GENETIC SYSTEMS,2008,83(1):23-30. |
| APA | Endo, Takashi Ryu.,Nasuda, Shuhei.,Jones, Neil.,Dou, Quanwen.,Akahori, Atsushi.,...&Tsujimoto, Hishashi.(2008).Dissection of rye B chromosomes, and nondisjunction properties of the dissected segments in a common wheat background.GENES & GENETIC SYSTEMS,83(1),23-30. |
| MLA | Endo, Takashi Ryu,et al."Dissection of rye B chromosomes, and nondisjunction properties of the dissected segments in a common wheat background".GENES & GENETIC SYSTEMS 83.1(2008):23-30. |
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