Nutritional interactions in insect-microbial symbioses: aphids and their symbiotic bacteria Buchnera.

@article{Douglas1998NutritionalII,
  title={Nutritional interactions in insect-microbial symbioses: aphids and their symbiotic bacteria Buchnera.},
  author={Angela E. Douglas},
  journal={Annual review of entomology},
  year={1998},
  volume={43},
  pages={
          17-37
        }
}
  • A. Douglas
  • Published 1998
  • Biology, Medicine
  • Annual review of entomology
Most aphids possess intracellular bacteria of the genus Buchnera. The bacteria are transmitted vertically via the aphid ovary, and the association is obligate for both partners: Bacteria-free aphids grow poorly and produce few or no offspring, and Buchnera are both unknown apart from aphids and apparently unculturable. The symbiosis has a nutritional basis. Specifically, bacterial provisioning of essential amino acids has been demonstrated. Nitrogen recycling, however, is not quantitatively… Expand
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Evidence suggests that Buchnera were acquired by a common ancestor of aphids 160–280 million years ago, and have been diversified, since then, in parallel with their aphid hosts, reflecting a nutritional role played by these symbionts. Expand
Facultative bacterial symbionts in aphids confer resistance to parasitic wasps
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An important implication of this study is that aposymbiotic insects exhibit substantial metabolic adjustments to loss of the symbiosis; they are not simply aphids from which the symbiotic bacteria have been removed. Expand
Genome sequence of the endocellular bacterial symbiont of aphids Buchnera sp. APS
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The results indicate that Buchnera is completely symbiotic and viable only in its limited niche, the bacteriocyte, and indicates complementarity and syntrophy between the host and the symbiont. Expand
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How the aphid host proteome is differentially affected by Spiroplasma infection when the host is exploiting host plants with different nutritional values is discussed. Expand
Facultative ‘secondary’ bacterial symbionts and the nutrition of the pea aphid, Acyrthosiphon pisum
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It is concluded that the impact of secondary symbionts on aphid traits is most unlikely to have a purely nutritional basis. Expand
Genome of Buchnera sp. Aps, an Intracellular Symbiotic Bacterium of the Pea Aphid Acyrthosiphon Pisum
TLDR
B Buchnera have lost most of the genes for biosynthesis of non-essential amino acids, and presumably depend on the host for these nutrients, and have never been observed in the association between parasitic bacteria such as Mycoplasma and Rickettsia and their hosts. Expand
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A better knowledge of the roles the facultative symbionts play in aphid biology, ecology and evolution is sought, which can provide new inspirations for aphid control. Expand
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It is proposed that the shortfall in threonine, possibly compounded by the high density of secondary symbionts, may contribute to the poor performance of the aphids on L. purpureum. Expand
Unrelated facultative endosymbionts protect aphids against a fungal pathogen.
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It is shown that protection against this entomopathogen, Pandora neoaphidis, can be conferred by strains of four distantly related symbionts (in the genera Regiella,Rickettsia, Rickettsiella and Spiroplasma), which reduce mortality and also decrease fungal sporulation on dead aphids which may help protect nearby genetically identical insects. Expand
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References

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TLDR
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