loading page

Chromosome-level genome assembly of the horned-gall aphid, Schlechtendalia chinensis (Hemiptera: Aphididae: Erisomatinae)
  • +4
  • Hongyuan Wei,
  • Yu-Xuan Ye,
  • Hai-Jian Huang,
  • Ming-Shun Chen,
  • Zi-Xiang Yang,
  • Xiaoming Chen,
  • Chuan-Xi Zhang
Hongyuan Wei
Chinese Academy of Forestry

Corresponding Author:[email protected]

Author Profile
Yu-Xuan Ye
Zhejiang University
Author Profile
Hai-Jian Huang
Ningbo University
Author Profile
Ming-Shun Chen
Kansas State University
Author Profile
Zi-Xiang Yang
Research Institute of Resource Insects, Chinese Academy of Forestry
Author Profile
Xiaoming Chen
Research Institute of Resource Insects, Chinese Academy of Forestry
Author Profile
Chuan-Xi Zhang
Zhejiang University
Author Profile


The horned gall aphid Schlechtendalia chinensis, is an economically important insect that induces galls valuable for medicinal and chemical industries. S. chinensis manipulates its host plant to form well-organized horned galls during feeding. So far, more than twenty aphid genomes have been reported; however, all of those are derived from free-living aphids. Here we generated a high-quality genome assembly of S. chinensis, representing the first genome sequence of a galling aphid. The final genome assembly was 280.43 Mb, with 97% of the assembled sequences anchored into thirteen chromosomes. S. chinensis presents the smallest aphid genome size among available aphid genomes to date. The contig and scaffold N50 values were 3.39 Mb and 20.58 Mb, respectively. The assembly included 96.4% of conserved arthropod and 97.8% of conserved Hemiptera single-copy orthologous genes based on BUSCO analysis. A total of 13,437 protein-coding genes were predicted. Phylogenomic analysis showed that S. chinensis formed a single clade between the Eriosoma lanigerum clade and the Aphidini+Macrosiphini aphid clades. In addition, salivary proteins were found to be differentially expressed when S. chinensis underwent host alternation, indicating their potential roles in gall formation and plant defense suppression. A total of 36 cytochrome P450 genes were identified in S. chinensis, considerably fewer compared to other aphids, probably due to its small host plant range. The high-quality S. chinensis genome assembly and annotation provide an essential genetic background for future studies to reveal the mechanism of gall formation and to explore the interaction between aphids and their host plants.
23 Sep 2021Submitted to Molecular Ecology Resources
07 Oct 2021Reviewer(s) Assigned
05 Nov 2021Review(s) Completed, Editorial Evaluation Pending
08 Nov 2021Editorial Decision: Revise Minor
30 Nov 2021Review(s) Completed, Editorial Evaluation Pending
30 Nov 20211st Revision Received
06 Dec 2021Reviewer(s) Assigned