Endoplura jejuensis sp. nov. and Endoplura koreana sp. nov. (Ralfsiales, Phaeophyceae) from Korea based on molecular and morphological analyses
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Date
2021
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Algae
Abstract
The crustose brown algal genus Endoplura has been known as a monotypic genus characterized by its intercalary
plurangial reproductive structures composed of 2–4 separate parallel filaments terminated by 2–5 sterile cells and by
containing several to many chloroplasts per cell. In this study, Endoplura jejuensis sp. nov. and E. koreana sp. nov. from
Korea are newly described based on molecular and morphological analyses. Our phylogenetic analyses of the rbcL gene
reveal that E. jejuensis sp. nov. and E. koreana sp. nov. are placed in the same clade with “E. aurea” from Japan with a
strong bootstrap supporting value. E. jejuensis is characterized by small and light to dark brown crustose thalli of less
than 1 cm diameter, tufts of hairs arising from the basal disc, plurangia composed mostly of two separate parallel repro-
ductive filaments terminated by 2–4 sterile cells, and sessile unangia each with a single paraphysis. E. koreana is distin-
guished by olive or yellowish-brown crustose thalli of up to 3 cm diameter, tufts of hairs arising from the basal disc, and
apical parts of erect filaments, plurangia with 2–5 separate reproductive filaments terminated by 2–8 sterile cells, and
sessile unangia with 1–2 paraphyses. Our studies also show that “E. aurea” specimens from Japan may be recognized to
be a different species from other Endoplura species.
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Citation
https://doi.org/10.4490/algae.2021.36.7.22