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松瘤小蠹线粒体基因组测序及分析

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松瘤小蠹广泛分布于欧亚大陆多国以及我国危害松科植物,但尚缺乏其分子鉴定和种群遗传结构方面的研究。鉴于此,本研究基于高通量测序技术测定了该害虫的线粒体基因组序列,使用GetOrganelle软件组装得到了其完整线粒体基因组。结果表明:松瘤小蠹的线粒体基因组长17451 bp,包含13个蛋白编码基因,22个tRNA和2个rRNA,A、T、C、G所占的比例分别为37。4%、33。45%、18。40%和10。75%。基于松瘤小蠹以及其他象甲科物种线粒体基因组序列构建系统发育树分析发现,松瘤小蠹与边瘤小蠹的亲缘关系较近,处于同一分支上,与传统的形态学分类相一致。该研究结果为今后筛选线粒体分子标记来开展松瘤小蠹分子鉴定和种群遗传结构研究奠定了基础。
Sequencing and Analysis of the Mitochondrial Genome of Orthotomicus erosus
Orthotomicus erosus(Coleoptera:Curculionidae)is widely distributed in Eurasia and China.It is a pest that damages pine trees.But the studies on the molecular identification and population genetic structure of this pest are still lacking.In view of this,the genomic sequences of this pest were sequenced with high-through-put sequencing technology,which leads to assemble its complete mitochondrial genome using GetOrganelle soft-ware.The results confirm that its mitogenome is 17 451 bp in length,containing 13 protein-coding genes,22 tRNA and 2 rRNA genes.Nucleotide compositions of its whole mitogenome are 37.4%for A,33.45%for T,18.4%for C,and 10.75%for G.Phylogenetic tree analysis using the sequences of the mitochondrial genomes of O.erosus and other Curculionidae species showed that O.erosus is closely related to O.laricis.These 2 species are grouped on the same branch,which is in accordance with the traditional morphological classification.The res-ults of this study lay a foundation for screening molecular markers of mitochondrion for molecular identification and genetic structure research in O.erosus.

Orthotomicus erosusCurculionidaemitogenomephylogeny

李兴艳、梁文凯、泽桑梓、赵宁、朱家颖

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西南林业大学云南省森林灾害预警与控制重点实验室,云南昆明 650233

云南省林业和草原有害生物防治检疫局,云南昆明 650051

西南林业大学西南山地资源保育与利用教育部重点实验室,云南昆明 650233

松瘤小蠹 象甲科 线粒体基因组 系统发育

云南省高层次人才培养支持计划"青年拔尖人才"专项

YNWR-QNBJ-2018-393

2024

西南林业大学学报
西南林业大学

西南林业大学学报

CSTPCD北大核心
影响因子:0.773
ISSN:2095-1914
年,卷(期):2024.44(1)
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