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Morphology and phylogenetic relationships of Micractinium (Chlorellaceae, Trebouxiophyceae) taxa, including three new species from Antarctica

Cited 7 time in wos
Cited 6 time in scopus
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Title
Morphology and phylogenetic relationships of Micractinium (Chlorellaceae, Trebouxiophyceae) taxa, including three new species from Antarctica
Other Titles
남극 유래 신종 3종을 포함한 Micractinium (Chlorellaceae, Trebouxiophyceae) 분류군의 형태와 계통학적 관계
Authors
Chae, Hyunsik
Lim, Sooyeon
Kim, Han Soon
Choi, Han-Gu
Kim, Ji Hee
Subject
Plant Sciences; Marine & Freshwater Biology
Keywords
Antarctica; ITS2 secondary structure; Micractinium; morphology; nuclear rDNA; phylogenetic relationships
Issue Date
2019-12
Citation
Chae, Hyunsik, et al. 2019. "Morphology and phylogenetic relationships of Micractinium (Chlorellaceae, Trebouxiophyceae) taxa, including three new species from Antarctica". ALGAE, 34(4): 267-275.
Abstract
Three new species of the genus Micractinium were collected from five localities on the South Shetland Islands in maritime Antarctica, and their morphological and molecular characteristics were investigated. The vegetative cells are spherical to ellipsoidal and a single chloroplast is parietal with a pyrenoid. Because of their simple morphology, no conspicuous morphological characters of new species were recognized under light microscopy. However, molecular phylogenetic relationships were inferred from the concatenated small subunit rDNA, and internal transcribed spacer (ITS) sequence data indicated that the Antarctic microalgal strains are strongly allied to the well-supported genus Micractinium, including M. pusillum, the type species of the genus, and three other species in the genus. The secondary structure of ITS2 and compensatory base changes were used to identify and describe six Antarctic Micractinium strains. Based on their morphological and molecular characteristics, we characterized three new species of Micractinium: M. simplicissimum sp. nov., M. singularis sp. nov., and M. variabile sp. nov.
URI
https://repository.kopri.re.kr/handle/201206/10988
DOI
http://dx.doi.org/10.4490/algae.2019.34.10.15
Appears in Collections  
2019-2019, The Jang Bogo Long-term Ecological Research (JBG-LTER) - Korea·New Zealand·Italy Joint platform construction (19-19) / Choi, Han-Gu (PE19150)
2019-2019, Modeling responses of terrestrial organisms to environmental changes on King George Island (19-19) / Lee, Hyoungseok (PE19090)
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