Acyrthosiphon pisum (Pea aphid, AL4f) Assembly and Gene Annotation

About Acyrthosiphon pisum

(Acyrthosiphon pisum*)*, commonly known as the pea aphid, is a sap-sucking insect in the family Aphididae. It feeds on several species of legumes worldwide, including forage crops, such as pea, clover, alfalfa, and broad bean, and ranks among the aphid species of major agronomical importance. The pea aphid is a model organism for biological study whose genome has been sequenced and annotated.

Aphids are common agricultural pests that feed on sap from the phloem vessels of a wide range of host plants. The pea aphid Acyrthosiphon pisum has co-evolved with an obligate bacterial symbiont (Buchnera aphidicola), which provides essential amino acids that are rare in phloem and would otherwise be missing from the aphids' diet. The co-evolution of the aphid and Buchnera has led to extensive gene loss from the genome, including immunity related pathways, purine salvage and the urea cycle. At the same time over 2000 gene families are duplicated, including miRNA synthesis and sugar transport [1,2].

Picture credit: Creative Commons Attribution 2.5 via Wikimedia Commons (Image source) Taxonomy ID 7029

(Text from Wikipedia.)

More information General information about this species can be found in Wikipedia

Assembly

The assembly presented here has been imported from INSDC and is linked to the assembly accession [GCA_005508785.2].

The total length of the assembly is 533649363 bp contained within 21228 scaffolds. The scaffold N50 value is 132544852, the scaffold L50 value is 2. Assembly gaps span 35567942 bp. The GC% content of the assembly is 29.5%.

Annotation

The annotation presented is derived from annotation submitted to INSDC with the assembly accession GCA_005508785.2.

Ensembl Metazoa displaying genes imported from NCBI RefSeq annotation release version is not defined for GCA_005508785.2 assembly. Small RNA features, protein features, BLAST hits and cross-references have been computed by Ensembl Metazoa.

References

1. Genome sequence of the pea aphid Acyrthosiphon pisum.
   The International Aphid Genomics Consortium. 2010. PLoS Biology. 8:e1000313.
2. AphidBase: a centralized bioinformatic resource for annotation of the pea aphid genome.
   Legeai F, Shigenobu S, Gauthier JP, Colbourne J, Rispe C, Collin O, Richards S, Wilson AC, Murphy T, Tagu D. 2010. Insect Molecular Biology. 19 Suppl 2:5-12.

   

3. Gene Family Evolution in the Pea Aphid Based on Chromosome-Level Genome Assembly.
   Li Y, Park H, Smith TE, Moran NA. Molecular Biology and Evolution. 2019 Oct; 36(10):2143-2156. DOI: 10.1093/molbev/msz138.