Wolbachia and cytoplasmic incompatibility in the spider mites Tetranychus urticae and T-turkestani
Wolbachia and cytoplasmic incompatibility in the spider mites Tetranychus urticae and T-turkestani
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DOI：
10.1038/hdy.1997.121
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发表时间：
1997-07-01
期刊：
影响因子：
3.8
通讯作者：
Breeuwer, JAJ
中科院分区：
文献类型：
--
作者：
Breeuwer, JAJ
沃尔巴克氏体是一组密切相关的细胞内变形菌，以各种方式操纵其节肢动物宿主的繁殖。它们在昆虫中广泛分布，但除了少数等足类动物和捕食性螨外，还没有在其他节肢动物中发现。近年来，Wolbachia在螨类中也广泛存在。在这里，我报告沃尔巴克氏体诱导细胞质不相容性的两种蜘蛛，二斑叶螨和T。在感染者和未感染者之间的交叉中。未感染的手套是通过抗生素治疗从感染的谱系中获得的。与其他细胞质不亲和性的例子类似，未感染（治愈）的雌性和感染的雄性叶螨之间的后续杂交与所有其他杂交组合不同。这表明，在沃尔巴克氏体-螨关系的动态和演变可能与沃尔巴克氏体-昆虫系统共享许多功能。有趣的是，不相容的交叉表现出高F-1合子死亡率的女性，但不是男性。这种合子的死亡率在单倍二倍体叶螨形成鲜明对比的细胞质不相容性的表型效应，以前报道的单倍二倍体昆虫。在后者中，由于受精卵的单倍体化，细胞质不相容导致所有雄性或雄性偏向的后代，几乎没有或没有合子死亡。可能的解释是低细菌密度和不同的，全动力学染色体结构的蜘蛛螨。
Wolbachia form a group of closely related intracellular Proteobacteria that manipulate reproduction of their arthropod host in various ways. They are widespread in insects, but have not been not looked for in other arthropods except a few isopods and a predatory mite. Recently, Wolbachia were demonstrated to he widespread in mites also. Here, I report that Wolbachia induce cytoplasmic incompatibility in two spider mite species, Tetranychus urticae and T. turkestani, in crosses between infected and uninfected individuals. Uninfected mitts were derived from the infected lineage by antibiotic treatment. Similar to other examples of cytoplasmic incompatibility, subsequent crosses between uninfected (cured) female and infected male spider mites were different from all other cross combinations. This suggests that the dynamics and evolution in Wolbachia-mite relationships may share many features with the Wolbachia-insect systems. Interestingly, the incompatible cross showed high F-1 zygotic mortality among females, but not among males. This zygotic mortality in the haplodiploid spider mites was in sharp contrast to the phenotypic effects of cytoplasmic incompatibility reported previously in haplodiploid insects. In the latter, cytoplasmic incompatibility results in all male or male-biased offspring because of haploidization of the fertilized egg with little or no zygotic mortality. Possible explanations are low bacterial densities and the different, holokinetic chromosome structure in spider mites.