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. 2000 Oct;9(5):539-43.
doi: 10.1046/j.1365-2583.2000.00218.x.

Ultrastructural and molecular identification of a Wolbachia endosymbiont in a spider, Nephila clavata

H W Oh  1 , M G Kim, S W Shin, K S Bae, Y J Ahn, H Y Park
Affiliations

Ultrastructural and molecular identification of a Wolbachia endosymbiont in a spider, Nephila clavata

H W Oh et al. Insect Mol Biol. 2000 Oct.

Abstract

Wolbachia-like bacteria were observed in the egg cells of golden orb-weaving spider, Nephila clavata, by means of transmission electron microscopy. The bacteria exhibited the typical morphology of Wolbachia, including three enveloping membranes. Based on the amplification and sequencing of partial 16S rDNA and ftsZ gene, the bacteria were identified as Wolbachia, intracellular, transovarially inherited alpha-proteobacteria in invertebrates. Phylogenetic analysis based on 16S rDNA and ftsZ gene sequences invariably indicated that the intracellular bacteria from N. clavata belonged to group A Wolbachia, which were found only from insects. Clustering of Wolbachia from N. clavata with group A Wolbachia indicates that the bacteria were probably transferred horizontally between insects and the spider.

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