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Phylogenetic Analyses of the Species of Chlorosarcinopsis and Neochlorosarcina (Chlorophyceae)
Author(s) -
Watanabe S.,
Mitui K.,
Nakayama T.,
Inouye I.
Publication year - 2002
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1046/j.1529-8817.38.s1.103.x
Subject(s) - biology , monophyly , clade , phylogenetic tree , botany , genus , chlorophyceae , phylogenetics , zoology , evolutionary biology , algae , chlorophyta , gene , biochemistry
The genus Chlorosarcinopsis forms sarcinoid packages of ? @ cells and reproduces by forming naked biflagellate zoospores. The genus Neochlorosarcina is distinguished from Chlorosarcinopsis in having a thin cell wall around zoospores. We analyzed phylogenetic relationships of seven species of Chlorosarcinopsis and four species of Neochlorosarcina using 18S rDNA sequence data. The species of the Chlorosarcinopsis were separated into two clades, and those of Neochlorosarcina formed a monophyletic branch, which was far from the Chlorosarcinopsis clades. Groover and Bold (1969) investigated physiological abilities of species of Chlorosarcinopsis (which included species of Neochlorosarcina ), and showed that the species were roughly divided into three groups by usage of nitrogen and carbon components. These groups correspond two clades of Chlorosarcinopsis and a clade of Neochlorosarcina . This result gave a phylogenetic meaning to the differences in the physiological abilities, and supported the separation of Neochlorosarcina from Chlorosarcinopsis based on a morphological attribute.