Novel Strain of Spiroplasma Found in Flower Bugs of the Genus Orius (Hemiptera: Anthocoridae): Transovarial Transmission, Coexistence with Wolbachia and Varied Population Density
Novel Strain of Spiroplasma Found in Flower Bugs of the Genus Orius (Hemiptera: Anthocoridae): Transovarial Transmission, Coexistence with Wolbachia and Varied Population Density
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DOI：
10.1007/s00248-013-0335-8
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发表时间：
2013
影响因子：
3.6
通讯作者：
Masaya Watanabe;F. Yukuhiro;T. Maeda;K. Miura;D. Kageyama
中科院分区：
文献类型：
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作者：
Masaya Watanabe;F. Yukuhiro;T. Maeda;K. Miura;D. Kageyama
螺原体是一组小的、无壁的、螺旋状的、活动的细菌，属于毛利门，包含有不同生活史的物种。迄今为止，已知在节肢动物谱系中垂直传播的所有螺原体菌株都属于伊氏螺原体群或波氏螺原体群。本研究发现，一株独特的螺旋体垂直传播于捕食性花蝽属（oriususgenus）中的螺旋体属（spiroplasma solitumgroup），是与toS系统发育密切相关的一类细菌。向日葵，Bidenssp.。(菊目:菊科)。自然种群感染频率分别为：sauteri inOrius 75例（16.0%）、nagaii inOrius 37例（40.5%）、minute inOrius 87例（8.0%）。镰形绦虫未感染螺旋体（n= 147）。在卵发生早期（即胚囊内），存在大量具有典型螺旋体形态的细菌，与沃尔巴克氏杆菌保持一定距离。在宿主发育过程中，螺浆体种群数量似乎有所增加，但螺浆体种群数量没有增加。
Spiroplasma, a group of small, wall-less, helical, and motile bacteria belonging to the Mollicutes, contains species with diverse life histories. To date, all theSpiroplasmastrains that are known to be transmitted vertically in arthropod lineages belong to either theSpiroplasma ixodetisgroup or theSpiroplasma poulsoniigroup. Here, we found that a unique strain ofSpiroplasmavertically transmitted in predatory flower bugs of the genusOriusbelongs to theSpiroplasma insolitumgroup, which is a group of bacteria phylogenetically closely related toS. insolitumderived from the tickseed sunflower,Bidenssp. (Asterales: Asteraceae). The infection frequencies in natural populations were16.0 % inOrius sauteri(n= 75), 40.5 % inOrius nagaii(n= 37), and 8.0 % inOrius minutus(n= 87).Orius strigicolliswas not infected withSpiroplasma(n= 147). In the early stage of oogenesis (i.e., within the germarium), a large number of bacteria with the typical morphology ofSpiroplasmaexisted, keeping a distance fromWolbachiabacteria. TheSpiroplasmapopulation seemed to increase during host development butWolbachiapopulation did not.