Bacteriophages Encode Factors Required for Protection in a Symbiotic Mutualism-Reference-Cited by-同舟云学术

Bacteriophages Encode Factors Required for Protection in a Symbiotic Mutualism

Published:2009-08-21 Issue:5943 Volume:325 Page:992-994
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Oliver Kerry M.¹,Degnan Patrick H.²,Hunter Martha S.³,Moran Nancy A.²

Affiliation:

1. Department of Entomology, University of Georgia, Athens, GA 30602, USA.

2. Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA.

3. Department of Entomology, University of Arizona, Tucson, AZ 85721, USA.

Abstract

Attacks Wasps The bacterium Hamiltonella defensa infects aphids and carries virulence determinants from a bacteriophage virus. Oliver et al. (p. 992 ) have now found that the toxin-bearing phage does not harm the aphid host of the bacterium, but targets the larvae of parasitoid wasps that infest the aphids. If an aphid population is not infested by wasps, the allied bacteriophage is shed by the bacterium, presumably because there is a cost to carrying it. If the wasps then resume their predation, the aphids are no longer protected and succumb to the parasitoid.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference22 articles.

1. The microbial dimension in insect nutritional ecology

2. K. M. Oliver N. A. Moran in Defensive Mutualism in Microbial Symbiosis J. F. White M. S. Torres Eds. (Taylor & Francis London 2009) pp. 129–148.

3. Facultative bacterial symbionts in aphids confer resistance to parasitic wasps

4. Costs and benefits of a superinfection of facultative symbionts in aphids

5. Variation in resistance to parasitism in aphids is due to symbionts not host genotype

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