Related Experiment Video
Updated: May 12, 2026
09:40
Novel Sequence Discovery by Subtractive Genomics
Published on: January 25, 2019
Mitochondrial phylogenomics of eucheumatoids (Solieriaceae, Rhodophyta) from the Indo-Pacific
Ji Tan1, Sze-Wan Poong2, Janina Brakel3,4,5
1Department of Agricultural and Food Science, Faculty of Science, Universiti Tunku Abdul Rahman, Perak, Malaysia.
Journal of Applied Phycology
|May 11, 2026
Summary
This study sequenced 26 eucheumatoid seaweed mitogenomes, revealing gene synteny and providing markers for species identification and conservation. Findings support phylogenetic analysis and cultivar development for these valuable carrageenan sources.
Area of Science:
- Marine Biology
- Genomics
- Phycology
Background:
- Eucheumatoid seaweeds are globally important for carrageenan production.
- Previous mitogenome research in this group has been limited, leaving diversity unexplored.
- This study focuses on eucheumatoids from the Indo-Pacific region.
Purpose of the Study:
- To sequence and analyze 26 complete mitogenomes from Indo-Pacific eucheumatoids.
- To identify genetic markers for species identification and phylogenetic analysis.
- To provide genomic data for conservation and cultivar development.
Main Methods:
- Sequencing of 26 complete eucheumatoid mitogenomes.
- Comparative analysis of mitogenome size, gene content, and synteny.
- Phylogenetic analyses using concatenated mitochondrial genes.
- Evaluation of gene markers for species and intergeneric relationship resolution.
Main Results:
- Sequenced 26 eucheumatoid mitogenomes (25.1–25.5 kb) with conserved gene synteny (50 genes).
- Phylogenetic analyses recovered strong clades, with exceptions in the genus *Eucheuma*.
- Identified specific genes (*atp*4, *nad*3, *nad*4, *nad*6) effective for resolving intergeneric relationships.
- Most genes are suitable for species identification, except *atp*9.
Conclusions:
- The sequenced mitogenomes provide a foundation for resolving taxonomic issues and understanding eucheumatoid evolution.
- Genomic data will aid in cultivar development and conservation strategies for economically important seaweeds.
- Further research incorporating plastome data will enhance understanding of genomic diversity.
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