期刊
MOLECULAR PHYLOGENETICS AND EVOLUTION
卷 54, 期 3, 页码 810-821出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2009.10.038
关键词
Co-speciation; Enterobacteriaceae; Insects; 16S rRNA; Endosymbionts; Mutation rate
资金
- Deutsche Forschungsgemeinschaft [K02115/7-1]
In most mutualistic symbioses of insects and intracellular bacteria, the endosymbionts provide additional nutrients to a host that feeds on an unbalanced diet. A strictly vertical transmission leads to co-speciation between the two partners. We have investigated an insect-bacteria relationship with a non-nutritional basis. The reed beetles (Donaciinae) harbor bacteria that produce a secretion used by the larvae for building a cocoon for pupation in mud underwater. The 16S rRNA of the bacteria and the cytochrome c oxidase I and elongation factor I alpha of the beetles have been partially sequenced. The bacterial and the host phylogeny were highly congruent. Larger taxonomic units (genera) and host species groups/pairs have been recovered in the bacterial phylogeny. The symbiont data still cannot clarify the hitherto unresolved deeper phylogeny of the hosts, which is interpreted as a sign of rapid adaptive radiation of the reed beetles soon after their origin. The Fate of sequence evolution among/within host species is discussed. (C) 2009 Elsevier Inc. All rights reserved.
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