目的探索一种快速确定缺失或插入突变杂合子DNA序列的简便方法。方法采用PCR-聚丙烯酰胺凝胶电泳（polyacrylamide gel electrphoresis，PAGE）一切胶回收-二次PCR-测序的方法，分析P基因1920del30 bp和insAACA杂合突变的突变等位基因...目的探索一种快速确定缺失或插入突变杂合子DNA序列的简便方法。方法采用PCR-聚丙烯酰胺凝胶电泳（polyacrylamide gel electrphoresis，PAGE）一切胶回收-二次PCR-测序的方法，分析P基因1920del30 bp和insAACA杂合突变的突变等位基因序列。结果获得了准确的突变等位基因序列。结论PCR—PAGE电泳-切胶回收-二次PCR-测序方法可准确鉴定缺失／插入突变杂合子个体突变等位基因DNA序列，在多方面优于克隆测序。展开更多
Targeting Induced Local Lesions IN Genomes （TILLING） is a reverse genetics strategy for the high-throughput screening of induced mutations.γ, radiation, which often induces both insertion/deletion （Indel） and poi...Targeting Induced Local Lesions IN Genomes （TILLING） is a reverse genetics strategy for the high-throughput screening of induced mutations.γ, radiation, which often induces both insertion/deletion （Indel） and point mutations, has been widely used in mutation induction and crop breeding. The present study aimed to develop a simple, high-throughput TILLING system for screening γ ray-induced mutations using high-resolution melting （HRM） analysis. Pooled rice （Oryza sativa） samples mixed at a 1：7 ratio of Indel mutant to wild-type DNA could be distinguished from the wild-type controls by HRM analysis. Thus, an HRM-TILLING system that analyzes pooled samples of four M2 plants is recommended for screening γ, ray-induced mutants in rice. For demonstration, a γ, ray-mutagenized M2 rice population （n=4560） was screened for mutations in two genes, OsLCT1 and SPDT, using this HRM-TILLING system. Mutations including one single nucleotide substitution （G→A） and one single nucleotide insertion （A） were identified in OsLCT1, and one tdnucleotide （TTC） deletion was identified in SPDT. These mutants can be used in rice breeding and genetic studies, and the findings are of importance for the application of γ, ray mutagenesis to the breeding of rice and other seed crops.展开更多
文摘目的探索一种快速确定缺失或插入突变杂合子DNA序列的简便方法。方法采用PCR-聚丙烯酰胺凝胶电泳（polyacrylamide gel electrphoresis，PAGE）一切胶回收-二次PCR-测序的方法，分析P基因1920del30 bp和insAACA杂合突变的突变等位基因序列。结果获得了准确的突变等位基因序列。结论PCR—PAGE电泳-切胶回收-二次PCR-测序方法可准确鉴定缺失／插入突变杂合子个体突变等位基因DNA序列，在多方面优于克隆测序。
基金Project supported by the National Key Research and Development Program of China(No.2016YFD0102103)
文摘Targeting Induced Local Lesions IN Genomes （TILLING） is a reverse genetics strategy for the high-throughput screening of induced mutations.γ, radiation, which often induces both insertion/deletion （Indel） and point mutations, has been widely used in mutation induction and crop breeding. The present study aimed to develop a simple, high-throughput TILLING system for screening γ ray-induced mutations using high-resolution melting （HRM） analysis. Pooled rice （Oryza sativa） samples mixed at a 1：7 ratio of Indel mutant to wild-type DNA could be distinguished from the wild-type controls by HRM analysis. Thus, an HRM-TILLING system that analyzes pooled samples of four M2 plants is recommended for screening γ, ray-induced mutants in rice. For demonstration, a γ, ray-mutagenized M2 rice population （n=4560） was screened for mutations in two genes, OsLCT1 and SPDT, using this HRM-TILLING system. Mutations including one single nucleotide substitution （G→A） and one single nucleotide insertion （A） were identified in OsLCT1, and one tdnucleotide （TTC） deletion was identified in SPDT. These mutants can be used in rice breeding and genetic studies, and the findings are of importance for the application of γ, ray mutagenesis to the breeding of rice and other seed crops.
