Wolbachia-induced meiotic drive and feminization is associated with an independent occurrence of selective mitochondrial sweep in a butterfly
Wolbachia-induced meiotic drive and feminization is associated with an independent occurrence of selective mitochondrial sweep in a butterfly
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DOI：
10.1098/rsbl.2017.0153
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发表时间：
2017-05
期刊：
影响因子：
3.3
通讯作者：
Mai Miyata;T. Konagaya;K. Yukuhiro;M. Nomura;D. Kageyama
中科院分区：
文献类型：
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作者：
Mai Miyata;T. Konagaya;K. Yukuhiro;M. Nomura;D. Kageyama
母系遗传的沃尔巴克氏体内共生体以各种方式操纵节肢动物的繁殖。在蝴蝶Eurema cavinina中，一种细胞质不相容诱导Wolbachia菌株wCI和相关的mtDNA单倍型已知起源于姐妹种Eurema hecabe，这为微生物介导的杂交渐渗提供了一个很好的案例研究。除了wCI，一些女性与Z 0核型港湾一个独特的沃尔巴克氏体菌株wFem，导致所有女性生产的减数分裂驱动和女性化。我们报告，相当大比例的E。在种子岛，雌性长吻金丝雀（65.7%）同时感染wCI和wFem（CF）。而单独感染wCI（C）的雌性以1：1的性别比产生后代，CF雌性仅产生雌性。虽然Z-连锁序列多态性显示C和CF雌性之间没有分歧的迹象，但mtDNA分裂成两个离散的分支;一个由C雌性和另一个CF雌性组成，两者都与E形成一个分支。hecabe对未感染E.我是阿琳娜这表明，CF母系也，但独立地，经历了一个选择性扫描后，从E。百人不同的进化力量被认为是导致C和CF matrilines分歧，这将是不可逆的，因为wFem的特定表型。
Maternally inherited Wolbachia endosymbionts manipulate arthropod reproduction in various ways. In the butterfly Eurema mandarina, a cytoplasmic incompatibility-inducing Wolbachia strain wCI and the associated mtDNA haplotypes are known to originate from the sister species Eurema hecabe, which offered a good case study for microbe-mediated hybrid introgression. Besides wCI, some females with the Z0 karyotype harbour a distinct Wolbachia strain wFem, which causes all-female production by meiotic drive and feminization. We report that a considerable proportion of E. mandarina females (65.7%) were infected with both wCI and wFem (CF) on Tanegashima Island. While females singly infected with wCI (C) produced offspring at a 1 : 1 sex ratio, CF females produced only females. Although Z-linked sequence polymorphism showed no signs of divergence between C and CF females, mtDNA split into two discrete clades; one consisted of C females and the other CF females, both of which formed a clade with E. hecabe but not with uninfected E. mandarina. This suggests that CF matrilines also, but independently, experienced a selective sweep after hybrid introgression from E. hecabe. Distinct evolutionary forces were suggested to have caused C and CF matrilines to diverge, which would be irreversible because of the particular phenotype of wFem.