First draft genome of the decaploid species, Ludwigia grandiflora subsp. hexapetala, validated through gene expression
Abstract
Invasive species are one of the biggest drivers of species extinction. Ludwigia grandiflora subsp. hexapetala ( Lgh ) is widely invasive in aquatic ecosystems of Europe, North America, and Japan, and also colonizes emergent freshwater soils, but limited genomic data constrain studies of its invasiveness. Here, we report a draft genome assembly of Lgh , with a total length of 1.487 Gb, in agreement with the genome size estimated by flow cytometry, despite high fragmentation (111,219 contigs; N50 = 13.5 kb) and low sequencing depth (6.5× Illumina, 1.6× Nanopore). In addition, an analysis combining homology and expression data identified 139,095 protein-coding genes. Moreover, several indicators suggest that the observed fragmentation is largely attributable to unassembled repetitive regions. Thus, despite these limitations, this assembly represents the first genome in the Ludwigioideae subfamily and constitutes a valuable resource for gene discovery, functional genomics, phylogenetic reconstruction, and evolutionary analyses across the Onagraceae family.
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BibTeX
@article{dore2026first,
title = {{First draft genome of the decaploid species, Ludwigia grandiflora subsp. hexapetala, validated through gene expression}},
author = {Guillaume Dore and Dominique D. Barloy and Frédérique Barloy-Hubler},
journal = {Gigabyte},
year = {2026},
month = oct,
doi = {10.46471/gigabyte.176},
url = {https://hal.science/hal-05835473v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - First draft genome of the decaploid species, Ludwigia grandiflora subsp. hexapetala, validated through gene expression
AU - Guillaume Dore
AU - Dominique D. Barloy
AU - Frédérique Barloy-Hubler
PY - 2026
DA - 2026/10/22
JO - Gigabyte
DO - 10.46471/gigabyte.176
UR - https://hal.science/hal-05835473v1
AB - Invasive species are one of the biggest drivers of species extinction. Ludwigia grandiflora subsp. hexapetala ( Lgh ) is widely invasive in aquatic ecosystems of Europe, North America, and Japan, and also colonizes emergent freshwater soils, but limited genomic data constrain studies of its invasiveness. Here, we report a draft genome assembly of Lgh , with a total length of 1.487 Gb, in agreement with the genome size estimated by flow cytometry, despite high fragmentation (111,219 contigs; N50 = 13.5 kb) and low sequencing depth (6.5× Illumina, 1.6× Nanopore). In addition, an analysis combining homology and expression data identified 139,095 protein-coding genes. Moreover, several indicators suggest that the observed fragmentation is largely attributable to unassembled repetitive regions. Thus, despite these limitations, this assembly represents the first genome in the Ludwigioideae subfamily and constitutes a valuable resource for gene discovery, functional genomics, phylogenetic reconstruction, and evolutionary analyses across the Onagraceae family.
SN - 2709-4715
ER -