Bibliographic Detail
Kushibiki, A., Yokoyama, A., Iwataki, M., Yokoyama, J., West, J.A. & Hara, Y., 2012
Reference:
Kushibiki, A., Yokoyama, A., Iwataki, M., Yokoyama, J., West, J.A. & Hara, Y. (2012). New unicellular red alga, Bulboplastis apyrenoidosa gen. et sp. nov. (Rhodellophyceae, Rhodophyta) from the mangroves of Japan: Phylogenetic and ultrastructural observations. Phycological Research 60: 114-122.
Abstract:
A novel unicellular red alga collected from a mangrove
area on Iriomote Island in southwest Japan is described
as Bulboplastis apyrenoidosa gen. et sp. nov. The cells
are spherical, mean 11.2 mm in diameter, and surrounded
by a thick mucilaginous sheath. The grayishgreen
chloroplast has many lobes extending throughout
the cell and lacks a pyrenoid. This chloroplast type is
similar to Glaucosphaera vacuolata, but differs from
other unicellular red algae. Plastoglobuli clusters occur
beneath the chloroplast envelope but only at the cell
periphery. A peripheral encircling thylakoid is absent.
Golgi bodies surround the central nucleus, which is an
arrangement shared with all members of the Dixoniellales.
The subcellular features of some mitotic phases
are quite similar to those of other unicellular red algae.
A pair of ring-shaped structures located within electrondense
material can be seen in cells undergoing telophase.
The size of the polar rings ranged within those
reported from the Dixoniellales. A phylogenetic analysis
based on small subunit rDNA indicates that B. apyrenoidosa
is a member of the Dixoniellales and a sister
lineage to Neorhodellaand Dixoniella.
