El CRAI romandrà tancat del 24 de desembre de 2025 al 6 de gener de 2026. La validació de documents es reprendrà a partir del 7 de gener de 2026.
El CRAI permanecerá cerrado del 24 de diciembre de 2025 al 6 de enero de 2026. La validación de documentos se reanudará a partir del 7 de enero de 2026.
From 2025-12-24 to 2026-01-06, the CRAI remain closed and the documents will be validated from 2026-01-07.
 
Miniatura

Fitxers

716186.pdf (1.4 MB)

Tipus de document

Article

Versió

Versió publicada

Data de publicació

2021-12-01

Llicència de publicació

cc-by-nc (c) Cerca, José et al., 2021
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/195746

The Tetragnatha kauaiensis genome sheds light on the origins of genomic novelty in spider

Títol de la revista

Autors

Director/Tutor

ISSN de la revista

Títol del volum

Recurs relacionat

https://doi.org/10.1093/gbe/evab262

Resum

Spiders (Araneae) have a diverse spectrum of morphologies, behaviors, and physiologies. Attempts to understand the genomic-basis of this diversity are often hindered by their large, heterozygous, and AT-rich genomes with high repeat content resulting in highly fragmented, poor-quality assemblies. As a result, the key attributes of spider genomes, including gene family evolution, repeat content, and gene function, remain poorly understood. Here, we used Illumina and Dovetail Chicago technologies to sequence the genome of the long-jawed spider Tetragnatha kauaiensis, producing an assembly distributed along 3,925 scaffolds with an N50 of ∼2 Mb. Using comparative genomics tools, we explore genome evolution across available spider assemblies. Our findings suggest that the previously reported and vast genome size variation in spiders is linked to the different representation and number of transposable elements. Using statistical tools to uncover gene-family level evolution, we find expansions associated with the sensory perception of taste, immunity, and metabolism. In addition, we report strikingly different histories of chemosensory, venom, and silk gene families, with the first two evolving much earlier, affected by the ancestral whole genome duplication in Arachnopulmonata (∼450 Ma) and exhibiting higher numbers. Together, our findings reveal that spider genomes are highly variable and that genomic novelty may have been driven by the burst of an ancient whole genome duplication, followed by gene family and transposable element expansion.

Matèries

Aranyes, Artròpodes, Hawaii

Matèries (anglès)

Spiders, Arthropoda, Hawai

Citació

Col·leccions

Articles publicats en revistes (Genètica, Microbiologia i Estadística)

Citació

CERCA, José, ARMSTRONG, Ellie e., VIZUETA MORAGA, Joel, FERNÁNDEZ, Rosa, DIMITROV, Dimitar, PETERSEN, Bent, PROST, Stefan, ROZAS LIRAS, Julio a., PETROV, Dmitri, GILLESPIE, Rosemary g.. The Tetragnatha kauaiensis genome sheds light on the origins of genomic novelty in spider. _Genome Biology and Evolution_. 2021. Vol. 13, núm. 12, pàgs. 1-17. [consulta: 8 de gener de 2026]. ISSN: 1759-6653. [Disponible a: https://hdl.handle.net/2445/195746]

Exportar metadades

JSON - METS

Compartir registre