کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4558163 1329925 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A divergent Cardinium found in daddy long-legs (Arachnida: Opiliones)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
A divergent Cardinium found in daddy long-legs (Arachnida: Opiliones)
چکیده انگلیسی

Recent studies indicate that a newly described bacterial endosymbiont, Cardinium, is widespread in arthropods and induces different reproductive manipulations in hosts. In this study, we used a portion of the 16S rRNA gene of the Cardinium to screen 16 Opilionid species from the suborder Palptores. We found the incidence of Cardinium in these Opiliones was significantly higher than in other pooled arthropods (31.2% versus 7.2%, P = 0.007). Phylogenetic analyses using maximum parsimony (MP) and Bayesian analysis revealed two distinct clades in Opiliones. One is a divergent monophyletic clade with strong support that has so far not been found in other arthropods, and a second one contains Cardinium both from Opiliones and other arthropods. There is not complete concordance of the Cardinium strains with host phylogeny, suggesting some horizontal movement of the bacteria among Opiliones. Although the divergence in the sequenced 16S rRNA region between the Cardinium infecting Opiliones and Cardinium from other arthropods is greater than among Cardinium found in other arthropods, all are monophyletic with respect to the outgroup bacteria (endosymbionts of Acanthamoeba). Based on high pairwise genetic distances, deep branch, and a distinct phylogenetic grouping, we conclude that some Opiliones harbor a newly discovered Cardinium clade.

Phylogeny of Cardinium bacteria with the two bacterial groups found in Daddy long-legs indicated by an arrow and line drawing of a Daddy long-legs.Figure optionsDownload as PowerPoint slideResearch highlights
► Cardinium are widespread endosymbiotic bacteria in arthropods.
► Daddy long-legs (Opiliones) have a divergent Cardinium type.
► Non-concordant phylogenies indicate that Cardium can jump between host species.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Invertebrate Pathology - Volume 105, Issue 3, November 2010, Pages 220–227
نویسندگان
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