Genomic Analysis of a Scale Worm Provides Insights into Its Adaptation to Deep-Sea Hydrothermal Vents.

ABSTRACT: Deep-sea polynoid scale worms endemic to hydrothermal vents have evolved an adaptive strategy to the chronically hypoxic environment, but its underlying molecular mechanisms remain elusive. Here, we assembled a chromosome-scale genome of the vent-endemic scale worm Branchipolynoe longqiensis (the first annotated genome in the subclass Errantia) and annotated two shallow-water polynoid genomes, aiming to elucidate the adaptive mechanisms. We present a genome-wide molecular phylogeny of Annelida which calls for extensive taxonomy revision by including more genomes from key lineages. The B. longqiensis genome with a genome size of 1.86 Gb and 18 pseudochromosomes is larger than the genomes of two shallow-water polynoids, possibly due to the expansion of various transposable elements (TEs) and

SUBMITTER: He X 

PROVIDER: S-EPMC10348049 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature