# The chromosomal genome sequence of the kidney sponge, Chondrosia reniformis Nardo, 1847, and its associated microbial metagenome sequences

## TL;DR

This paper presents the genome and microbial metagenome sequences of the kidney sponge, Chondrosia reniformis, including its chromosomal and mitochondrial genomes and associated bacterial genomes.

## Contribution

The study provides a high-quality genome assembly and metagenome analysis of the kidney sponge and its symbiotic bacteria.

## Key findings

- The genome assembly is 117.37 megabases long with 17,340 protein-coding genes annotated.
- The mitochondrial genome is 17.45 kilobases and 53 bacterial genomes were identified from the metagenome.
- The sponge hosts three candidate bacterial phyla, indicating a typical high microbial abundance sponge.

## Abstract

We present a genome assembly from a specimen of
Chondrosia reniformis (kidney sponge; Porifera; Demospongiae; Chondrillida; Chondrillidae). The genome sequence has a total length of 117.37 megabases. Most of the assembly (99.98%) is scaffolded into 14 chromosomal pseudomolecules. The mitochondrial genome has also been assembled and is 17.45 kilobases in length. Several symbiotic bacterial genomes were assembled as MAGs. Gene annotation of the host organism assembly on Ensembl identified 17,340 protein-coding genes. The metagenome of the specimen was also assembled and 53 binned bacterial genomes were identified, including 40 high-quality MAGs that were representative of a typical high microbial abundance sponge and included three candiate phyla (Poribacteria, Latescibacteria, Binatota)