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Didemnum vexillum tunic microbiome

ABSTRACT: Didemnum vexillum tunic microbiome Raw sequence reads

PROVIDER: PRJNA608680 | ENA |

REPOSITORIES: ENA

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Dataset's files

Source:

			Action	DRS
	SRR11285900_1.fastq.gz	Fastqsanger.gz
	SRR11285900_2.fastq.gz	Fastqsanger.gz
	SRR11285901_1.fastq.gz	Fastqsanger.gz
	SRR11285901_2.fastq.gz	Fastqsanger.gz
	SRR11285902_1.fastq.gz	Fastqsanger.gz

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Project description:Tunicates are the sister group of vertebrates and thus occupy a key position for investigations into vertebrate innovations as well as into the consequences of the vertebrate-specific genome duplications. Nevertheless, tunicate genomes have not been studied extensively in the past, and comparative studies of tunicate genomes have remained scarce. The carpet sea squirt Didemnum vexillum, commonly known as "sea vomit", is a colonial tunicate considered an invasive species with substantial ecological and economical risk. We report the assembly of the D. vexillum genome using a hybrid approach that combines 28.5 Gb Illumina and 12.35 Gb of PacBio data. The new hybrid scaffolded assembly has a total size of 517.55 Mb that increases contig length about eightfold compared to previous, Illumina-only assembly. As a consequence of an unusually high genetic diversity of the colonies and the moderate length of the PacBio reads, presumably caused by the unusually acidic milieu of the tunic, the assembly is highly fragmented (L50 = 25,284, N50 = 6539). It is sufficient, however, for comprehensive annotations of both protein-coding genes and non-coding RNAs. Despite its shortcomings, the draft assembly of the "sea vomit" genome provides a valuable resource for comparative tunicate genomics and for the study of the specific properties of colonial ascidians.

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