加拿大草原主要线虫害虫物种所含细菌群的特征。

IF 2.3 2区 农林科学 Q3 BIOCHEMISTRY & MOLECULAR BIOLOGY
Ivan Drahun, Keagan Morrison, Elise A Poole, Willem G van Herk, Bryan J Cassone
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引用次数: 0

摘要

几乎所有昆虫都有细菌群落,这些细菌群落会对昆虫的生活史产生深远影响,包括调节和塑造宿主的新陈代谢、发育、免疫力和健康状况。已经对几种鞘翅目昆虫的细菌群作了描述,但关于线虫的报道却很少。这些点击甲虫(鞘翅目:Elateridae)的长寿命幼虫是加拿大草原地区多种农作物的主要农业害虫。因此,本研究的目标是描述该地区五种最重要害虫的细菌组特征:为此,我们从马尼托巴省南部田地(播种前)收集幼虫,并对单个标本进行 16S rRNA 测序。我们的研究结果表明,铁线虫的细菌群落种类繁多、分类群丰富,共鉴定出 400 多个菌属,主要来自变形菌门、放线菌门、类杆菌门和真菌门。不过,每个物种都有 9 个或更少的属,占其细菌群的 80% 以上。网络分析显示,不同物种之间的一些群落结构是一致的,这可能会最终塑造/调节宿主的生物学特性。此外,微生物特征还受到本体(早期幼虫与晚期幼虫)和繁殖策略(有性繁殖与孤雌生殖)的影响,还有许多其他因素可能会导致细菌多样性,但我们的研究无法解决这些问题。总之,这项元基因组学研究首次描述了加拿大草原铁线虫细菌群的特征,研究结果有助于针对这些重要的农业害虫制定可持续的管理策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characterisation of the bacteriomes harboured by major wireworm pest species in the Canadian Prairies.

Nearly all insects harbour bacterial communities that can have a profound effect on their life history, including regulating and shaping host metabolism, development, immunity and fitness. The bacteriomes of several coleopterans have been described; however, very little has been reported for wireworms. These long-lived larvae of click beetles (Coleoptera: Elateridae) are major agricultural pests of a variety of crops grown in the Canadian Prairies. Consequently, the goal of this study was to characterise the bacteriomes of five of the most significant pest species within the region: Limonius californicus, Hypnoidus abbreviatus, H. bicolor, Aeolus mellillus and Dalopius spp. To do this, we collected larvae from southern Manitoba fields (pre-seeding) and carried out 16S rRNA sequencing on individual specimens. Our results indicate wireworms have diverse and taxon-rich bacterial communities, with over 400 genera identified predominately from the phyla Proteobacteria, Actinobacteriota, Bacteroidota and Firmicutes. However, each species had nine or fewer genera comprising >80% of their bacteriome. Network analyses revealed some community structuring consistent among species, which may culminate in shaping/regulating host biology. Moreover, the microbial signatures were influenced by both ontogeny (early vs. late stage larvae) and reproductive strategy (sexual vs. parthenogenetic), with a myriad of other factors likely contributing to bacterial diversity that are impossible to resolve from our study. Overall, this metagenomics study represents the first to characterise the bacteriomes of wireworms in the Canadian Prairies and the findings could assist in the development of sustainable management strategies for these important agricultural pests.

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来源期刊
Insect Molecular Biology
Insect Molecular Biology 生物-昆虫学
CiteScore
4.80
自引率
3.80%
发文量
68
审稿时长
6-12 weeks
期刊介绍: Insect Molecular Biology has been dedicated to providing researchers with the opportunity to publish high quality original research on topics broadly related to insect molecular biology since 1992. IMB is particularly interested in publishing research in insect genomics/genes and proteomics/proteins. This includes research related to: • insect gene structure • control of gene expression • localisation and function/activity of proteins • interactions of proteins and ligands/substrates • effect of mutations on gene/protein function • evolution of insect genes/genomes, especially where principles relevant to insects in general are established • molecular population genetics where data are used to identify genes (or regions of genomes) involved in specific adaptations • gene mapping using molecular tools • molecular interactions of insects with microorganisms including Wolbachia, symbionts and viruses or other pathogens transmitted by insects Papers can include large data sets e.g.from micro-array or proteomic experiments or analyses of genome sequences done in silico (subject to the data being placed in the context of hypothesis testing).
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