Guizotia Abyssinica: Chromosomal-Level Reference Genome

A 3.47 Gb chromosomal-level reference genome assembly for the oilseed crop Guizotia abyssinica (niger) provides a foundational genomic resource. The assembly, derived from double haploid plants of cultivar JNS-9, anchors 2.85 Gb across 15 chromosomes and includes organellar genomes. This first-ever high-quality global assembly supports functional genomics and breeding applications for this important crop.

Use Cases

• Functional genomics studies based on the annotated chromosomal assembly.
• Molecular marker development for breeding using the anchored genome sequence.
• Comparative genomics analyses leveraging the high-contiguity assembly with contig N50 of 187.4 Mb.
• Organellar genome studies utilizing the provided 151 kb chloroplast and 311 kb mitochondrial assemblies.

Strengths

• High assembly completeness with ~99% of predicted genome size captured and 99.1% BUSCO recovery.
• High contiguity demonstrated by a contig N50 value of 187.4 Mb.
• Chromosomal anchoring of 2.85 Gb across 15 linkage groups with distinguished telomeres and centromeres.

Limitations

• Column names and row counts are not provided in the metadata, limiting precise understanding of file structures.
• The dataset's primary geographic focus is India, a secondary center of diversity, which may limit direct applicability to Ethiopian germplasm.

Provenance

Source

Sujatha Mulpuri

Collection Method

Sequencing of double haploid plants (Cv. JNS-9) via anther culture, using PacBio HiFi and Hi-C sequencing technologies.

Time Range

null

Freshness

Last updated on 2026-03-24.

Geography

India (secondary center of diversity for Guizotia abyssinica).