Bibliographic Detail
Yokoyama, A., Scott, J.L., Zuccarello, G.C., Makiko Kajikawa, M., Hara, Y. & West, J.A., 2009
Reference:
Yokoyama, A., Scott, J.L., Zuccarello, G.C., Makiko Kajikawa, M., Hara, Y. & West, J.A. (2009). Corynoplastis japonica gen. et sp. nov. and Dixoniellales
ord. nov. (Rhodellophyceae, Rhodophyta) based on
morphological and molecular evidence. Phycological Research 57: 278.
Publication Date:
Dec 2009
Abstract:
A new unicellular red alga, Corynoplastis japonica gen.
et sp. nov., is described from Tobishima, Japan. Cells
are spherical, 1833 mm in diameter, pale purple to
brownish red and surrounded by a mucilaginous sheath.
A single chloroplast with many lobes extends from the
cell periphery to the cell center. A peripheral thylakoid
is present. A pyrenoid occurs at each innermost chloroplast
lobe end and one or two thylakoids are present
in the pyrenoid matrix. The nucleus is eccentric to
peripheral and Golgi bodies are scattered throughout
the cell and associated with endoplasmic reticulum.
Cells have a slow random gliding motility. The low
molecular weight carbohydrate mannitol is present in
the cells. Molecular phylogenetic analysis indicates
that this alga is closely related to members of the genus
Rhodella. A new order, Dixoniellales, is established for
Dixoniella, Neorhodella and Glaucosphaera based on
molecular and ultrastructural evidence (Golgi bodies
associated only with the nucleus). The redefined order
Rhodellales in which Rhodella and Corynoplastis are
placed is characterized ultrastructurally by Golgi bodies
scattered throughout the cytoplasm and associated with
endoplasmic reticulum.
