neo-moniliformis (Fuller and Olson 1971 ;
Olson 1980 ) and is unlike other blastocladian
genera in having components that are highly
divided and less closely associated. Numerous
rounded mitochondria are present in zoospores
of A. macrogynus, and many are partially
embedded in the nuclear cap. A larger cup-
shaped mitochondrion partially surrounds the
functional kinetosome and is the main compo-
nent of a reduced and poorly organized MLC
that contains several microbodies, a small num-
ber of lipid globules, and additional mitochon-
dria. Motile cells of Blastocladia ramosa
contain multiple mitochondria but lack an
organized MLC (Lingle and Barstow 1983 ).
The outermost component of the MLC in sub-
types 4A and 4B is a backing membrane that is
usually continuous at several points with the
outer membrane of the nuclear cap. The motile
cells ofP. maydishave a modified subtype 4A
MLC in which the number of lipid globules may
be reduced to one, and avesicular-microbody
systemis present in place of a discrete backing
membrane and microbody.NLPbVMb
BTPKGlAvMFFig. 7.9Coelomomyces punctatus. Interpretive draw-
ing of median longitudinal section through meios-
pore showing ultrastructural details based primarily
on Martin ( 1971 ).Avadhesion vesicle,Bbacking
membrane (contrasted with microbody to show tubu-
lar network),Glgammalike body,Kfunctional kinet-
osome, L lipid globule, M mitochondrion, Mb
microbody,Nnucleus,Ncnuclear cap,Pprop,F
flagellum,Pb paracrystalline body,T cytoplasmic
microtubule,Vvacuole,open arrowperikinetosomal
striations
NuNMNkcKVmsVmsTFL
NcVFig. 7.10Physoderma maydis. Interpretive drawing of
median longitudinal section through meiospore
showing ultrastructural details based primarily on
Olson and Lange ( 1978 ) and Lange and Olson ( 1980 ).
Fflagellum,Kfunctional kinetosome,Llipid globule,M
mitochondrion,Nnucleus,Ncnuclear cap,Nkcnonki-
netosomal centriole, Nu nucleolus, T cytoplasmic
microtubule,Vvacuole,Vmsvesicular–microbody sys-
tem,open arrowperikinetosomal striationsBlastocladiomycota 195