Evidence for the establishment of aphid-eubacterium endosymbiosis in an ancestor of four aphid families

Munson, Mark A.; Baumann, Paul; Clark, Marta A.; Baumann, Linda C.; Moran, Nancy A.; Voegtlin, David J.; Campbell, Bruce

doi:10.1128/jb.173.20.6321-6324.1991

Cited by 254 publications

(174 citation statements)

References 22 publications

(29 reference statements)

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“…Previous results indicated the absence of regulatory structures in the endosymbiont DNA that have been found in other organisms or the presence of one copy of the gene coding for 16S rRNA, a finding consistent with a slow growth rate ofthe endosymbionts (8)(9)(10)12). …”

Section: Caccaagcgatagtagaagcctatggaggcattatcggatatgcaggtgaaatattccacsupporting

confidence: 60%

“…These include genes for DNA replication, transcription, translation, biosynthesis, energy metabolism, chaperoning, and protein secretion (6)(7)(8)(9)(10)(11). Evolutionary studies involving comparisons ofgenes coding for 16S rRNAs have indicated that Buchnera is a distinct lineage within the class Proteobacteria, with Escherichia coli as the nearest known relative (12). The endosymbiosis appears to have originated 200-250 million years ago (13).…”

mentioning

confidence: 99%

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Amplification of trpEG: adaptation of Buchnera aphidicola to an endosymbiotic association with aphids.

Lai

Baumann²,

Baumann³

1994

Proc. Natl. Acad. Sci. U.S.A.

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140

169

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Section: Caccaagcgatagtagaagcctatggaggcattatcggatatgcaggtgaaatattccacsupporting

confidence: 60%

mentioning

confidence: 99%

Amplification of trpEG: adaptation of Buchnera aphidicola to an endosymbiotic association with aphids.

Lai

Baumann²,

Baumann³

1994

Proc. Natl. Acad. Sci. U.S.A.

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140

169

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“…One important evolutionary factor that has also to be considered when examining the conservation of phosphoproteins is gene loss in parasites, which is mainly caused by the availability of the essential proteins from the host (41,42). An interesting example is Buchnera aphidicola, an intracellular symbiont of the greenbug aphid (43). Although closely related to E.…”

Section: Phosphoproteome Of Escherichia Colimentioning

confidence: 99%

Phosphoproteome Analysis of E. coli Reveals Evolutionary Conservation of Bacterial Ser/Thr/Tyr Phosphorylation

Maček

Gnad

Soufi

et al. 2008

Molecular & Cellular Proteomics

381

431

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Protein phosphorylation on serine, threonine, and tyrosine (Ser/Thr/Tyr) is generally considered the major regulatory posttranslational modification in eukaryotic cells. Increasing evidence at the genome and proteome level shows that this modification is also present and functional in prokaryotes. We have recently reported the first indepth phosphorylation site-resolved dataset from the model Gram-positive bacterium, Bacillus subtilis, showing that Ser/Thr/Tyr phosphorylation is also present on many essential bacterial proteins. To test whether this modification is common in Eubacteria, here we use a recently developed proteomics approach based on phosphopeptide enrichment and high accuracy MS to analyze the phosphoproteome of the model Gram-negative bacterium Escherichia coli. We report 81 phosphorylation sites on 79 E. coli proteins, with distribution of Ser/Thr/Tyr phosphorylation sites 68%/23%/9%. Despite their phylogenetic distance, phosphoproteomes of E. coli and B. subtilis show striking similarity in size, classes of phosphorylated proteins, and distribution of Ser/Thr/Tyr phosphorylation sites. By combining the two datasets, we created the largest phosphorylation site-resolved database of bacterial phosphoproteins to date (available at www. phosida.com) and used it to study evolutionary conservation of bacterial phosphoproteins and phosphorylation sites across the phylogenetic tree. We demonstrate that bacterial phosphoproteins and phosphorylated residues are significantly more conserved than their nonphosphorylated counterparts, with a number of potential phosphorylation sites conserved from Archaea to humans. Our results establish Ser/Thr/Tyr phosphorylation as a common posttranslational modification in Eubacteria, present since the onset of cellular life. Molecular & Cellular Proteomics 7:299 -307, 2008.

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“…While obligate symbionts are generally vertically transmissible and are unable to live apart from their hosts, facultative symbionts show tissue tropism but are able to colonize the host at high infective densities, and some can spread horizontally or by means of repeat infection when a new host generation arises. Many symbionts characteristically have evolved to retain a stable minimal genome with very few mobile elements, or genes such as mutS, mutL, and recA which govern DNA mismatch repair and recombination (Moran, 2007;Munson et al, 1991). Patterns of gene loss and gene decay in facultative symbionts are postulated to be associated with relaxed DNA mismatch repair.…”

Section: Cf Airway Adapted Pa Is Taking Identifiable Steps Towards Symentioning

confidence: 99%

Chronic pulmonary pseudomonal infection in patients with cystic fibrosis: A model for early phase symbiotic evolution

Qin

2014

Critical Reviews in Microbiology

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To cite this article: Xuan Qin (2016) Chronic pulmonary pseudomonal infection in patients with cystic fibrosis: A model for early phase symbiotic evolution, Critical Reviews in Microbiology, 42:1, 144-157, DOI: 10.3109/1040841X.2014 AbstractGain of ''antimicrobial resistance'' and ''adaptive virulence'' has been the dominant view of Pseudomonas aeruginosa (Pa) in cystic fibrosis (CF) in the progressively damaged host airway over the course of this chronic infection. However, the pathogenic effects of CF airway-adapted Pa strains are notably reduced. We propose that CF Pa and other bacterial cohabitants undergo host adaptation which resembles the changes found in bacterial symbionts in animal hosts. Development of clonally selected and intraspecific isogenic Pa strains which display divergent colony morphology, growth rate, auxotrophy, and antibiotic susceptibility in vitro suggests an adaptive sequence of infective exploitation-parasitism-symbiotic evolution driven by host defenses. Most importantly, the emergence of CF pseudomonal auxotrophy is frequently associated with a few specific amino acids. The selective retention or loss of specific amino acid biosynthesis in CF-adapted Pa reflects bacterium-host symbiosis and coevolution during chronic infection, not nutrient availability. This principle also argues against the long-standing concept of dietary availability leading to evolution of essential amino acid requirements in humans. A novel model of pseudomonal adaptation through multicellular bacterial syntrophy is proposed to explain early events in bacterial gene decay and decreased (not increased) virulence due to symbiotic response to host defense.

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Evidence for the establishment of aphid-eubacterium endosymbiosis in an ancestor of four aphid families

Cited by 254 publications

References 22 publications

Amplification of trpEG: adaptation of Buchnera aphidicola to an endosymbiotic association with aphids.

Amplification of trpEG: adaptation of Buchnera aphidicola to an endosymbiotic association with aphids.

Phosphoproteome Analysis of E. coli Reveals Evolutionary Conservation of Bacterial Ser/Thr/Tyr Phosphorylation

Chronic pulmonary pseudomonal infection in patients with cystic fibrosis: A model for early phase symbiotic evolution

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