高分辨率熔解和RT-qPCR探针法高通量检测多年生黑麦草草甘膦抗性靶位点突变的评价

IF 1.5 3区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY New Zealand Journal of Agricultural Research Pub Date : 2023-05-28 DOI:10.1080/00288233.2023.2218099
H. Ghanizadeh, C. Anderson, Benjamin K. Franzmayr, M. Cook, C. Buddenhagen, Zachary Ngow, T. James, A. Griffiths
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Evaluation of high-resolution melting and RT-qPCR probe assays for high-throughput detection of target-site mutations conferring glyphosate resistance in Lolium perenne
ABSTRACT Rapid identification of herbicide-resistant weeds plays a crucial role in their management. Glyphosate resistance in Lolium perenne is a growing issue in New Zealand and can be conferred by a single nucleotide polymorphism (SNP) causing amino acid substitutions at codon 106 in the 5-enolpyruvoylshikimate-3-phosphate synthase (EPSPS) gene. High-throughput molecular (HTM) methodologies that can detect such SNPs include high-resolution melting and real-time quantitative PCR probe assays. Here, we compare the effectiveness of both assays with a more labour-intense derived cleaved amplified polymorphic sequence (dCAPS) test for detecting SNPs at codon 106. The results showed that both HTM assays detected mutations at this codon, and their results were consistent with those of the dCAPS. Unlike dCAPS, however, the HTM assays over-estimated homozygosity for the glyphosate resistance allele. Nevertheless, cost-effective high-throughput detection of resistance is more important than the zygosity status when initiating an on-farm management response. In summary, both HTM assays successfully identified glyphosate resistance alleles at codon 106 in the EPSPS gene. Given that both assays are more cost-effective and can screen a larger number of samples in a timely manner compared to the dCAPS method, they can be used as quick tests for detecting glyphosate resistance in L. perenne.
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来源期刊
CiteScore
4.90
自引率
16.70%
发文量
31
审稿时长
3 months
期刊介绍: The New Zealand Journal of Agricultural Research publishes original research papers, review papers, short communications, book reviews, letters, and forum articles. We welcome submissions on all aspects of animal and pastoral science relevant to temperate and subtropical regions. The journal''s subject matter includes soil science, fertilisers, insect pests, plant pathology, weeds, forage crops, management systems, agricultural economics, agronomy, and animal science. The journal also accepts crossover papers on subjects such as land –water interactions.
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