• Data Descriptor

• Open access

• Published: 21 January 2026

• Xiang Shi1,

• Jianhua Xue2,3 &

• Xinwei Xu1

Scientific Data , Article number: (2026) Cite this article

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Abstract

The narrow-leaf bur-reed (Sparganium angustifolium Michx.), a member of the Typhaceae family, is an ecologically important species in temperate Northern Hemisphere aquatic ecosystems. As a phylogenetically basal taxon within the order Poales, S. angustifolium is critical for understanding evolutionary adaptations to aquatic environments. While molecular mechanisms of aquatic adaptation have been extensively studied in Alismatales, genomic resources for basal Poales remain scarce. Here, we present the first chromosome-level genome assembly of S. angustifolium, comprising 486.52 Mb with 99.94% coverage across 15 chromosomes. The assembly demonstrates high continuity, with both contig and scaffold N50 values reaching 33.25 Mb. Genome annotation identified 23,767 protein-coding genes and revealed that repetitive sequences represent 70.16% of the genome. Our findings provide valuable genomic resources for comparative studies of plant adaptation to aquatic environments across different evolutionary lineages.

Data availability

The raw sequence data have been deposited in the Genome Sequence Archive at the National Genomics Data Center under accession number CRA02702145. The survey, HiFi, and Hi-C reads have been deposited in the European Nucleotide Archive under accession numbers ERR1584496546 and ERR1584497147 (survey reads); ERR1583863148, ERR1583853649, and ERR1583853150 (HiFi reads); and ERR1584210551 and ERR1584497352 (Hi-C reads). The genome assembly has been deposited in the Genome Warehouse under accession number GWHGEEK00000000.153 and in the European Nucleotide Archive under accession number GCA_97706350554. The genome annotation files are available in the Figshare database(https://doi.org/10.6084/m9.figshare.29375852)55.

Code availability

All bioinformatics tools and software used for genome assembly, annotation, and data analysis in this study were operated strictly according to their official user manuals, with no custom code employed. Software versions and parameters are comprehensively documented in the Methods section.

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Acknowledgements

This study was supported by the National Water Pollution Control and Treatment Science and Technology Major Project, China (No. 2015ZX07503005). The calculations in this paper were performed using the supercomputing system at the Supercomputing Center of Wuhan University.

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Authors and Affiliations

National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Sciences, Wuhan University, Wuhan, 430072, China

Xiang Shi & Xinwei Xu 1.

Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China

Jianhua Xue 1.

China National Botanical Garden, Beijing, 100093, China

Jianhua Xue

Authors

1. Xiang Shi
2. Jianhua Xue
3. Xinwei Xu

Contributions

X.X. designed the research; J.X. carried out the field collections; X.S. carried out the experiments and performed the data analysis; X.S., J.X. and X.X. wrote and revised the manuscript. All authors read and approved the manuscript.

Corresponding author

Correspondence to Xinwei Xu.

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Shi, X., Xue, J. & Xu, X. Chromosome-level genome assembly of narrow-leaf bur-reed (Sparganium angustifolium Michx., Typhaceae). Sci Data (2026). https://doi.org/10.1038/s41597-026-06640-6

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Received: 04 July 2025

Accepted: 15 January 2026

Published: 21 January 2026

DOI: https://doi.org/10.1038/s41597-026-06640-6