PMID: 1202015Dec 1, 1975Paper

Gametic differentiation in Chlamydomonas reinhardtii. I. Production of gametes and their fine structure

The Journal of Cell Biology
N C Martin, U W Goodenough

Abstract

Gametogenesis in Chlamydomonas reinhardtii has been studied in mating-type plus cells utilizing several different culture conditions, all of which are shown to depend on the depletion of nitrogen from the medium, and the fine structure of gametes prepared under these conditions has been compared by using thin sections of fixed materials. We document alterations in ribosome levels, in chromatin morphology, in starch levels, in the organization of chloroplast membranes, and in the appearance of nuclear envelope and endoplasmic reticulum membranes during gametogenesis. We also noted the acquisition of two new organelles: a mating structure (Friedman, L., A. L. Colwin, and L. H. Colwin. 1968. j. cell Sci. 3:115-128; goodenough, U. W., and R. L. Weiss. 1975. J. Cell Biol. 67:623-637), and Golgi-derived vesicles containing a homogeneous material. We chart the time course of these morphological changes during synchronous gametogenesis. We note that many of these changes may represent adjustments to nitrogen starvation rather than direct features of gametic differentiation, and we also document that cells can differentiate so that they survive conditions of nitrogen starvation for many weeks after they become gametes. We conclude that ...Continue Reading

References

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Aug 1, 1968·The Journal of Cell Biology·U G Johnson, K R Porter
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Citations

Jan 1, 1993·Cell Motility and the Cytoskeleton·U W Goodenough
Dec 1, 1994·Plant Molecular Biology·L M Quarmby
Mar 1, 1986·Bulletin of Environmental Contamination and Toxicology·M S NetrawaliM D Pednekar
Dec 1, 1978·Developmental Biology·F J Longo
Feb 19, 2000·Phytochemistry·S A AriszT Munnik
Oct 1, 1983·Proceedings of the National Academy of Sciences of the United States of America·J B CooperJ E Heuser
Nov 1, 1987·The Journal of Cell Biology·S M Pasquale, U W Goodenough
Jul 1, 1989·The Journal of Cell Biology·U W Goodenough
Apr 1, 1993·The Journal of Cell Biology·U W GoodenoughJ L Salisbury
Jul 1, 1993·The Journal of Cell Biology·T SaitoU W Goodenough
Jan 1, 1977·The Journal of Cell Biology·R L WeissU W Goodenough
Apr 1, 1978·The Journal of Cell Biology·S A Minami, U W Goodenough
Mar 1, 1980·The Journal of Cell Biology·D A MeslandU W Goodenough
Aug 1, 1980·The Journal of Cell Biology·J L Hoffman, U W Goodenough
Dec 1, 1982·The Journal of Cell Biology·U W Goodenough, J E Heuser
Jun 1, 1983·The Journal of Cell Biology·U W Goodenough
Jan 1, 1995·Molecular Biology of the Cell·A M CampbellU W Goodenough
Oct 3, 2001·Genes & Development·J G Umen, U W Goodenough

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