Saccharum Complex: Repetitive DNA Content Across 30 Genotypes

Nina Reis Soares analyzed the repetitive DNA landscape across 30 genotypes from the "Saccharum complex," including nine Saccharum species and related genera. The dataset, last updated in May 2026, reports repetitive DNA content ranging from 42.5% to 59.7% of the genome, with LTR retrotransposons as the dominant fraction. This work provides an evolutionary framework for understanding polyploid genome dynamics in sugarcane.

Use Cases

• Correlating repeat abundance with genome size based on the reported strong relationship.
• Analyzing lineage-specific diversification of LTR retrotransposons, particularly SIRE and Tekay families.
• Identifying taxon-specific satellite DNAs for cytogenetic marker development.
• Reconstructing phylogenetic relationships within the Saccharum complex using repeat-based phylogenies.

Strengths

• Data is derived from 30 genotypes representing nine Saccharum species and related genera.
• Repetitive DNA content is quantified with specific percentages (42.5% to 59.7%).
• Analysis includes examination of fully assembled genomes of S. officinarum, S. spontaneum, and cultivar R570.
• Released under a permissive CC-BY-4.0 license.

Limitations

• Row count and column-level documentation are unknown, limiting suitability assessment.
• The dataset is very small (51.8 KB), suggesting it contains summary or processed results rather than raw sequence data.

Provenance

Source

figshare, author Nina Reis Soares.

Collection Method

Repetitive sequences were identified using RepeatExplorer2, with LTR retrotransposons further examined using DANTE.

Freshness

Last updated 2026-05-21 05:45:47.