54. Triemer, R. E. and R. M. Brown, Jr.
1975. Fertilization in Chlamydomonas reinhardi, with special
reference to the structure, development, and fate of the choanoid
body. Protoplasma 85:99-107.
Summary
The role of choanoid body in fertilization
is discussed. The choanoid body, an electron dense ring composed
of tubular elements, develops in the plus gamete during gametogenesis.
When plus and minus gamete cells are mixed, a fertilization tubule
develops from the choanoid body. Microfilaments produced form
the choanoid body fill the lumen of the elongating tubule. During
mating, the fertilization tubule makes contact with an electron
dense plate associated with the plasma membrane of the minus gamete.
Fusion occurs and a fertilization bridge is established. Microfilaments
extend from the choanoid body toward the minus nucleus. With
the establishment of a bridge of endoplasmic reticulum between
the nuclei, the microfilament association ceases. The significance
of microfilaments in both plasmogamy and karyogamy is discussed.