

FOLLOWUS
1.School of Life Science, Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University, Taiyuan 030006, China
2.Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
liugx@ihb.ac.cn
xiesl@sxu.edu.cn
Received:23 July 2022,
Accepted:13 September 2022,
Online First:28 October 2022,
Published:01 November 2023
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LIU Xudong,SU Chen,FENG Jia,et al.Makinoella parva,a new species of the genus Makinoella (Oocystaceae, Trebouxiophyceae, Chlorophyta)[J].Journal of Oceanology and Limnology,2023,41(06):2391-2402.
Makinoella
Okada is a genus of coccoid green algae belonging to the family Oocystaceae with typical morphological characteristics. Reports to date included only one type species. Since the genus is rarely reported
there is a lack of taxonomic research. In this study
17 strains of this genus were collected from several different places in China
and their taxonomic studies were conducted based on morphological and molecular phylogenetic analysis. The phylogenetic results based on the analysis of ITS
chloroplast genes
rbc
L and
tuf
A showed that the genus was divided into two branches. One of the branches comprised newly collected algae. Compensatory base changes (CBCs) and hemi-compensatory base changes (hemi-CBCs) within the secondary structure of the ITS-2 confirmed the branches as two species. Compared with the type species of
Makinoella tosaensis
the cell size of this new branch was only about 50%
and included 2–4 colonial cells. Therefore
based on the smaller cell size
simpler colony composition
independent phylogenetic position and CBCs and hemi-CBCs
we suggest that the new clade s
hould be designated as a new taxon of
Makinoella
namely
Makinoella parva
. Among the four molecular markers using in this study
the
rbc
L and newly introduced ITS are recommended for species separation
which can help further studies to revise the species and generic concepts of the family.
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