A Catalogue of Chromosome Counts for Phylum Nematoda

Overview

Journal Wellcome Open Res

Specialty Biomedical Engineering

Date 2024 Nov 13

PMID 39534537

Authors

Mark L Blaxter

Chloe Leech

David H Lunt

Affiliations

Soon will be listed here.

Abstract

Nematodes are important biological models in genetics and genomics, with research driven by basic biological as well as applied questions. The presence of holocentric chromosomes, clades with frequent polyploidy and the phenomenon of programmed DNA elimination make nematode karyotypic diversity of particular interest. Here we present a catalogue of published karyotypes of nematode species, rationalising and normalising descriptions from the previous 135 years. Karyotypes of 257 species are presented in taxonomic context. Nuclear chromosome counts range from 2 to 60. Tylenchina is identified as particularly diverse in karyotype. We highlight that Rhabditida and especially parasitic Rhabditina are well-represented, but there is a paucity of data from Enoplea, Dorylaimia, and from free-living marine groups in Chromadorea. The data have been uploaded to the Genomes on a Tree (GoaT) datasystem ( https://goat.genomehubs.org/) for integration with ongoing, large-scale genome sequencing efforts.

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