Wolbachia do not live by reproductive manipulation alone: infection polymorphism in Drosophila suzukii and D. subpulchrella.
Wolbachia do not live by reproductive manipulation alone: infection polymorphism in Drosophila suzukii and D. subpulchrella.
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DOI：
10.1111/mec.12901
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发表时间：
2014-10
影响因子：
4.9
通讯作者：
Turelli M
中科院分区：
文献类型：
--
作者：
Hamm CA;Begun DJ;Vo A;Smith CC;Saelao P;Shaver AO;Jaenike J;Turelli M
铃木果蝇最近入侵了北美和欧洲。夏威夷、加利福尼亚州、纽约和新斯科舍省的人群沃尔巴克氏菌是多态的，通常感染频率为20%。铃鹿体内的Wolbachia，简称wSuz，与WRI密切相关，WRI是一种流行于欧洲大陆的仿生杜氏菌变种。WSuz也与在枯草杆菌中发现的沃尔巴克氏菌几乎相同，这似乎是铃鹿的姊妹物种。这表明沃尔巴克氏菌通过分支发生垂直传播(“分支传播”)。7%-20%的感染频率普遍存在，表明存在稳定的多态。WSuz是不完全通过母体传播的，野生感染的雌性平均产生5%-10%的未感染后代。正如其低频率所预期的那样，wSuz不会产生细胞质不相容(CI)，即当感染的雄性与未感染的雌性交配时，不会增加胚胎死亡率，也不会产生明显的性别比扭曲。尽管母体遗传并不完美，但wSuz的持续存在表明了积极的健身效果。假设在选择和不完美的传递之间取得平衡，我们预计健康优势约为20%。出乎意料的是，感染沃尔巴克氏菌的雌性后代比未感染的雌性少。我们还不了解铃木的wSuz的维护情况。在铃木和枯草杆菌中没有可检测到的CI，这使得基于CI的机制不太可能被用来控制这个物种，而不是使用新的沃尔巴克氏菌进行感染。与水平传播生殖寄生虫的名声相反，许多沃尔巴克氏菌感染是通过渐渗或分支发生获得的，许多感染并不会造成明显的生殖操纵。这种感染很可能是相互作用的，可能是理解沃尔巴克氏菌在节肢动物中传播的核心。
Drosophila suzukii recently invaded North America and Europe. Populations in Hawaii, California, New York and Nova Scotia are polymorphic for Wolbachia, typically with <20% infection frequency. The Wolbachia in D. suzukii, denoted wSuz, is closely related to wRi, the variant prevalent in continental populations of D. simulans. wSuz is also nearly identical to Wolbachia found in D. subpulchrella, plausibly D. suzukii's sister species. This suggests vertical Wolbachia transmission through cladogenesis (“cladogenic transmission”). The widespread occurrence of 7-20% infection frequencies indicates a stable polymorphism. wSuz is imperfectly maternally transmitted, with wild infected females producing on average 5-10% uninfected progeny. As expected from its low frequency, wSuz produces no cytoplasmic incompatibility (CI), i.e., no elevated embryo mortality when infected males mate with uninfected females, and no appreciable sex-ratio distortion. The persistence of wSuz despite imperfect maternal transmission suggests positive fitness effects. Assuming a balance between selection and imperfect transmission, we expect a fitness advantage on the order of 20%. Unexpectedly, Wolbachia-infected females produce fewer progeny than do uninfected females. We do not yet understand the maintenance of wSuz in D. suzukii. The absence of detectable CI in D. suzukii and D. subpulchrella makes it unlikely that CI-based mechanisms could be used to control this species without transinfection using novel Wolbachia. Contrary to their reputation as horizontally transmitted reproductive parasites, many Wolbachia infections are acquired through introgression or cladogenesis and many cause no appreciable reproductive manipulation. Such infections, likely to be mutualistic, may be central to understanding the pervasiveness of Wolbachia among arthropods.
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影响因子：
10.7
作者：
Cordaux, Richard;Pichon, Samuel;Ling, Alison;Perez, Philippe;Delaunay, Carine;Vavre, Fabrice;Bouchon, Didier;Greve, Pierre
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影响因子：
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作者：
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DOI：
10.1534/g3.113.008185
发表时间：
2013-12-09
期刊：
G3 (Bethesda, Md.)
影响因子：
--
作者：
Chiu JC;Jiang X;Zhao L;Hamm CA;Cridland JM;Saelao P;Hamby KA;Lee EK;Kwok RS;Zhang G;Zalom FG;Walton VM;Begun DJ
通讯作者：
Begun DJ
DOI：
10.1098/rspb.1998.0402
发表时间：
1998-06-22
影响因子：
4.7
作者：
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通讯作者：
Juchault, P
影响因子：
2.8
作者：
Burrack, Hannah J.;Smith, J. Powell;Laforest, Joseph
通讯作者：
Laforest, Joseph