A simple and efficient non-denaturing FISH method for maize chromosome differentiation using single-strand oligonucleotide probes
文献类型: 外文期刊
第一作者: Zhu, Minqiu
作者: Zhu, Minqiu;Du, Pei;Zhuang, Lifang;Qi, Zengjun;Chu, Chenggen;Zhao, Han
作者机构:
关键词: chromosome diversity;non-denaturing FISH;oligonucleotide;Zea mays
期刊名称:GENOME ( 影响因子:2.166; 五年影响因子:2.474 )
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收录情况: SCI
摘要: Single-strand oligonucleotides (SSONs hereafter) as probes are becoming a powerful method of chromosome painting in many species. In this study, nine SSONs ((ACT)(10), (ACT)(19), Knob-1, Knob-2, Knob-3, CentC69-1, MR68-3, K10-72-1, and TR1-357-2) were developed and used for chromosome identification in 16 maize (Zea mays L., 2n = 20) inbred lines and hybrids by non-denaturing fluorescence in situ hybridization (ND-FISH). Each SSON produced clear signals on 2-10 chromosomes of inbred lines B73 and Mo17. A multiplex probe set containing four SSONs ((ACT) 10, Knob-2, CentC69-1, and MR68-3) clearly characterized all maize chromosomes in the 16 lines by a single round of ND-FISH and revealed genetic variation at a chromosome level. For example, unique signals on chromosome 6 clearly distinguished all 16 genotypes. The SSONs and multiplex probe developed in this research will facilitate genotype identification and chromosome research in maize.
分类号: Q3`R394
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