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Buchnera aphidicola

ABSTRACT: Aphid endosymbiont

PROVIDER: PRJNA12322 | ENA |

REPOSITORIES: ENA

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Dataset's files

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			Action	DRS
		Other
	DRR099882_subreads.fastq.gz	Fastqsanger.gz
	DRR099883_subreads.fastq.gz	Fastqsanger.gz
	DRR099884_subreads.fastq.gz	Fastqsanger.gz
	DRR099885_subreads.fastq.gz	Fastqsanger.gz

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Buchnera aphidicola BCc strain:Cc

Project description:Primary endosymbiont of the Cinara cedri aphid

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Buchnera aphidicola str. Sg (Schizaphis graminum)

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Buchnera aphidicola str. Bp (Baizongia pistaciae)

Project description:Primary endosymbiont of the Baizongia pistaciae aphid

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Buchnera aphidicola str. APS (Acyrthosiphon pisum)

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Reductive genome evolution in Buchnera aphidicola.

Project description:We have sequenced the genome of the intracellular symbiont Buchnera aphidicola from the aphid Baizongia pistacea. This strain diverged 80-150 million years ago from the common ancestor of two previously sequenced Buchnera strains. Here, a field-collected, nonclonal sample of insects was used as source material for laboratory procedures. As a consequence, the genome assembly unveiled intrapopulational variation, consisting of approximately 1,200 polymorphic sites. Comparison of the 618-kb (kbp) genome with the two other Buchnera genomes revealed a nearly perfect gene-order conservation, indicating that the onset of genomic stasis coincided closely with establishment of the symbiosis with aphids, approximately 200 million years ago. Extensive genome reduction also predates the synchronous diversification of Buchnera and its host; but, at a slower rate, gene loss continues among the extant lineages. A computational study of protein folding predicts that proteins in Buchnera, as well as proteins of other intracellular bacteria, are generally characterized by smaller folding efficiency compared with proteins of free living bacteria. These and other degenerative genomic features are discussed in light of compensatory processes and theoretical predictions on the long-term evolutionary fate of symbionts like Buchnera.

| S-EPMC141039 | biostudies-literature

Isolation of the Buchnera aphidicola flagellum basal body complexes from the Buchnera membrane

Project description:Buchnera aphidicola is an intracellular bacterial symbiont of aphids and maintains a small genome of only 600 kbps. Buchnera is thought to maintain only genes relevant to the symbiosis with its aphid host. Curiously, the Buchnera genome contains gene clusters coding for flagellum basal body structural proteins and for flagellum type III export machinery. These structures have been shown to be highly expressed and present in large numbers on Buchnera cells. No recognizable pathogenicity factors or secreted proteins have been identified in the Buchnera genome, and the relevance of this protein complex to the symbiosis is unknown. Here, we show isolation of Buchnera flagellum basal body proteins from the cellular membrane of Buchnera, confirming the enrichment of flagellum basal body proteins relative to other proteins in the Buchnera proteome. This will facilitate studies of the structure and function of the Buchnera flagellum structure, and its role in this model symbiosis.

2021-09-10 | PXD024664 | Pride

Buchnera aphidicola str. 5A (Acyrthosiphon pisum)

Project description:Pea aphid symbiont

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Buchnera aphidicola str. Tuc7 (Acyrthosiphon pisum)

Project description:Pea aphid symbiont

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Isolation of the Buchnera aphidicola flagellum basal body complexes from the Buchnera membrane.

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Transcription profiling of response of Buchnera aphidicola to depletion of essential amino acids combined with an increase in sucrose in the diet of its aphid host

Project description:The aim of this work was to analyze the transcriptomic response of Buchnera aphidicola when the aphid host is submitted to depletion in essential amino acids (EAA). This treatment was combined with an increase in sucrose concentration to influence the bacterial growth rate. In this experiment, the dietary amino acids had an EAA:nonEAA ratio of either 1:1 (50% EAA) or 1:3 (25% EAA), giving low and high aphid demand of Buchnera-derived essential amino acids, respectively. This comparison was set in a 2 times 2 factorial design with sucrose concentration at 0.5 M and 1.0 M, supporting high and low aphid growth rates.

2006-04-03 | E-TABM-85 | biostudies-arrayexpress

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