Scientists map seed beetle genome to fight crop-destroying pest
Researchers have decoded the complete genetic blueprint of Callosobruchus maculatus, a beetle that devastates legume crops worldwide. The high-quality genome map will accelerate development of pest-control strategies and unlock new breeding approaches to protect global food supplies.
Originaltitel: A chromosome-level assembly of the seed beetle <em>Callosobruchus maculatus</em> genome with annotation of its repetitive elements
<p><em>Callosobruchus maculatus</em> is a major agricultural pest of legume crops worldwide and an established model system in ecology and evolution. Yet, current molecular biological resources for this species are limited. Here, we employ Hi-C sequencing to generate a greatly improved genome assembly and we annotate its repetitive elements in a dedicated in-depth effort where we manually curate and classify the most abundant unclassified repeat subfamilies. We present a scaffolded chromosome-level assembly, which is 1.01 Gb in total length with 86% being contained within the 9 autosomes and the X chromosome. Repetitive sequences accounted for 70% of the total assembly. DNA transposons covered 18% of the genome, with the most abundant superfamily being <em>Tc1-Mariner</em> (9.75% of the genome). This new chromosome-level genome assembly of <em>C. maculatus</em> will enable future genetic and evolutionary studies not only of this important species but of beetles more generally.</p>