Ec' to.thi' o.rho' do.spi' ra
. Gr. prep.
ectos
outside; Gr. n.
thios
sulfur; Gr. n.
rhodon
the rose; Gr. n.
spira
the spiral; M.L. fem. n.
Ectothiorhodospira
spiral rose with sulfur outside.
Proteobacteria / Gammaproteobacteria / Chromatiales / Ectothiorhodospiraceae / Ectothiorhodospira
Cells rod‐shaped or vibrioid, also appearing as true spirals, 0.7–1.5 µm in diameter,
motile by a polar tuft of flagella
, multiply by binary fission, and may contain gas vesicles.
Gram‐negative and belong to the
Gammaproteobacteria
.
Internal photosynthetic membranes are lamellar stacks
that are continuous with the cytoplasmic membrane. Photosynthetic pigments are bacteriochlorophyll
a
and carotenoids.
The mol
%
G
+
C of the DNA is
: 61.4–68.4.
Type species
:
Ectothiorhodospira mobilis
Pelsh 1936, 120.