A chromosome‐scale draft sequence of the Canada fleabane genome

生物 遗传学 染色体 序列(生物学) 全基因组测序 比例(比率) 基因组 计算生物学 进化生物学 基因 地理 地图学
作者
Martin Laforest,Sara L. Martin,Katherine Bisaillon,Brahim Soufiane,Sydney Meloche,Eric R. Page
出处
期刊:Pest Management Science [Wiley]
卷期号:76 (6): 2158-2169 被引量:29
标识
DOI:10.1002/ps.5753
摘要

Abstract Background Due to the accessibility of underlying technologies the ‘Omics’, in particular genomics, are becoming commonplace in several fields of research, including the study of agricultural pests. The weed community is starting to embrace these approaches; genome sequences have been made available in the past years, with several other sequencing projects underway, as promoted by the International Weed Genome Consortium. Chromosome‐scale sequences are essential to fully exploit the power of genetics and genomics. Results We report such an assembly for Conyza canadensis , an important agricultural weed. Third‐generation sequencing technology was used to create a genome assembly of 426 megabases, of which nine chromosome‐scale scaffolds cover more than 98% of the entire assembled sequence. As this weed was the first to be identified with glyphosate resistance, and since we do not have a firm handle on the genetic mechanisms responsible for several herbicide resistances in the species, the genome sequence was annotated with genes known to be associated with herbicide resistance. A high number of ABC‐type transporters, cytochrome P450 and glycosyltransferases (159, 352 and 181, respectively) were identified among the list of ab initio predicted genes. Conclusion As C. canadensis has a small genome that is syntenic with other Asteraceaes, has a short life cycle and is relatively easy to cross, it has the potential to become a model weed species and, with the chromosome‐scale genome sequence, contribute to a paradigm shift in the way non‐target site resistance is studied. © 2020 Her Majesty the Queen in Right of CanadaPest Management Science © 2020 Society of Chemical Industry
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