Phylogeny and evolution of haptophytes based on three new mitogenomes

Title
Phylogeny and evolution of haptophytes based on three new mitogenomes
Author(s)
양은찬; 이하은; 김수연
KIOST Author(s)
Yang, Eun Chan(양은찬)Lee, Haeun(이하은)
Publication Year
2019-04-29
Abstract
Emiliania, Chrysochromulina, and Phaeocystis are important primary producers in the open ocean. Diacronema (known as Pavlova) and Isochrysis are famous microalgae with higher amounts of polyunsaturated fatty acids and are commonly used as feedstocks of marine shellfish and fish aquacultures. Despite of industrial, ecological and evolutionary importance of the haptophytes, genetic diversity and evolutionary history of the lineage are not well studied yet because of limited taxon sampling. In present study, we assembled new mitochondrial genomes (mtDNA) from three haptophycean taxa, i.e., Chrysotila carterae LIMS-PS-1065, Diacronema lutheri LIMS-PS-0073, and Isochrysis galbana LIMS-PS-1699. In the Haptophytes, total size of mtDNA was ranged from 26,188 bp to 41,838 bp in total, and encompassed 17-22 protein coding genes, 2-3 rRNAs, and 24-25 tRNAs. The best phylogeny based on mtDNA reveals a monophyly of Haptophyta, basal position of Pavlovales (Diacronema and Pavlova), and relationships among Coccolithophycean taxa, such as sister relationship of Coccolithales (Chrysotila) and Isochrysidales (Eminiania and Isochrysis). The gene content comparison based on mtDNA phylogeny suggested multiple gains and losses of atp4, atp8, rpl14, rps3 and rps8 within the haptophytes.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22743
Bibliographic Citation
23rd International Seaweed Symposium, pp.220, 2019
Publisher
International Seaweed Association
Type
Conference
Language
English
Publisher
International Seaweed Association
Related Researcher
Research Interests

Algae,Systematics,Ecology,조류,계통,생태

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse