ITS2 Sequence Alignment for Haptophyte Phylogenetics

Louisa Ridder's dataset provides ITS2 sequence alignments for haptophyte microalgae, compiled for a 2026 study. The dataset includes 224 ITS2 sequences and is 104.8 KB in size. It was created to enhance phylogenetic resolution by integrating secondary structure information.

Use Cases

• Resolving phylogenetic relationships among closely related species based on ITS2 sequence variability.
• Comparing sequence-only versus sequence-structure phylogenetic approaches based on the described methodology.
• Analyzing alignment challenges and artifacts due to high sequence variability and length differences.
• Distinguishing calcifying and non-calcifying lineages based on the 18S sequence-structure data referenced.

Strengths

• Dataset includes 224 ITS2 sequences.
• Methodology integrates secondary structure information to improve alignment quality.
• Taxon sampling reduced over 40,000 available sequences to 396 representatives for the related 18S dataset.

Limitations

• ITS2 data has limited taxon representation.
• ITS2 data presents alignment challenges due to high sequence variability and length differences.
• ITS2 data is unsuitable for resolving deep relationships among haptophytes.
• Row count and column-level documentation are unknown.

Provenance

Source

Louisa Ridder via figshare

Collection Method

Compiled from available sequences, with taxon sampling and comparative modeling.

Freshness

Last updated 2026-03-19 17:23:04