Abstract
Hydrurusfoetidus is a freshwater chrysophyte alga. It thrives in cold rivers in polar and high alpine regions. It has several morphological traits reminiscent of single-celled eukaryotes, but can also form macroscopic thalli. Despite its ability to produce polyunsaturated fatty acids, its life under cold conditions and its variable morphology, very little is known about its genome and transcriptome. Here, we present an extensive set of next-generation sequencing data, including genomic short reads from Illumina sequencing and long reads from Nanopore sequencing, as well as full length cDNAs from PacBio IsoSeq sequencing and a small RNA dataset (smaller than 200 bp) sequenced with Illumina. The genome sequences were combined to produce an assembly consisting of 5069 contigs, with a total assembly size of 171 Mb and a 77% BUSCO completeness. The new data generated here may contribute to a better understanding of the evolution and ecological roles of chrysophyte algae, as well as to resolve the branching patterns at a larger phylogenetic scale.
Highlights
Hydrurus foetidus is a freshwater chrysophyte alga
Any further responses from the reviewers can be found at the end of the article Introduction Here, we present extensive genome sequencing data, including a hybrid assembly, as well as transcriptome data of mRNAs and small RNAs of the golden algae Hydrurus foetidus (Villars) Trevisan
The culture will be deposited in a special culture collection, at the Fraunhofer Culture Collection of Cryophilic Algae (CCCryo)
Summary
Any further responses from the reviewers can be found at the end of the article Introduction Here, we present extensive genome sequencing data, including a hybrid assembly, as well as transcriptome data of mRNAs and small RNAs of the golden algae Hydrurus foetidus (Villars) Trevisan. Chrysophytes have attracted considerable interest from an evolutionary point of view They belong to the division (phylum) Heterokonta (Cavalier-Smith, 1986) (Stramenopila according to Adl et al, 2019), an immensely diverse group of eukaryotes with many basal branches in the phylogeny still not resolved, despite numerous molecular phylogenetic studies, including multigene phylogenomics
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