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J Cell Biol. 1981 June 1; 89(3): 395–405.
PMCID: PMC2111815

Roles of the CDC24 gene product in cellular morphogenesis during the Saccharomyces cerevisiae cell cycle


Temperature-sensitive yeast mutants defective in gene CDC24 continued to grow (i.e., increase in cell mass and cell volume) at restrictive temperature (36 degrees C) but were unable to form buds. Staining with the fluorescent dye Calcofluor showed that the mutants were also unable to form normal bud scars (the discrete chitin rings formed in the cell wall at budding sites) at 36 degrees C; instead, large amounts of chitin were deposited randomly over the surfaces of the growing unbudded cells. Labeling of cell-wall mannan with fluorescein isothiocyanate-conjugated concanavalin A suggested that mannan incorporation was also delocalized in mutant cells grown at 36 degrees C. Although the mutants have well-defined execution points just before bud emergence, inactivation of the CDC24 gene product in budded cells led both to selective growth of mother cells rather than of buds and to delocalized chitin deposition, indicating that the CDC24 gene product functions in the normal localization of growth in budded as well as in unbudded cells. Growth of the mutant strains at temperatures less than 36 degrees C revealed allele-specific differences in behavior. Two strains produced buds of abnormal shape during growth at 33 degrees C. Moreover, these same strains displayed abnormal localization of budding sites when growth at 24 degrees C (the normal permissive temperature for the mutants); in each case, the abnormal pattern of budding sites segregated with the temperature sensitivity in crosses. Thus, the CDC24 gene product seems to be involved in selection of the budding site, formation of the chitin ring at that site, the subsequent localization of new cell wall growth to the budding site and the growing bud, and the balance between tip growth and uniform growth of the bud that leads to the normal cell shape.

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Selected References

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  • Byers B, Goetsch L. A highly ordered ring of membrane-associated filaments in budding yeast. J Cell Biol. 1976 Jun;69(3):717–721. [PMC free article] [PubMed]
  • Cabib E. Molecular aspects of yeast morphogenesis. Annu Rev Microbiol. 1975;29:191–214. [PubMed]
  • Cabib E, Bowers B. Chitin and yeast budding. Localization of chitin in yeast bud scars. J Biol Chem. 1971 Jan 10;246(1):152–159. [PubMed]
  • Cabib E, Bowers B. Timing and function of chitin synthesis in yeast. J Bacteriol. 1975 Dec;124(3):1586–1593. [PMC free article] [PubMed]
  • Culotti J, Hartwell LH. Genetic control of the cell division cycle in yeast. 3. Seven genes controlling nuclear division. Exp Cell Res. 1971 Aug;67(2):389–401. [PubMed]
  • Farkas V. Biosynthesis of cell walls of fungi. Microbiol Rev. 1979 Jun;43(2):117–144. [PMC free article] [PubMed]
  • Farkas V, Kovarík J, Kosinová A, Bauer S. Autoradiographic study of mannan incorporation into the growing cell walls of Saccharomyces cerevisiae. J Bacteriol. 1974 Jan;117(1):265–269. [PMC free article] [PubMed]
  • Field C, Schekman R. Localized secretion of acid phosphatase reflects the pattern of cell surface growth in Saccharomyces cerevisiae. J Cell Biol. 1980 Jul;86(1):123–128. [PMC free article] [PubMed]
  • FREIFELDER D. Bud position in Saccharomyces cerevisiae. J Bacteriol. 1960 Oct;80:567–568. [PMC free article] [PubMed]
  • Hartwell LH. Macromolecule synthesis in temperature-sensitive mutants of yeast. J Bacteriol. 1967 May;93(5):1662–1670. [PMC free article] [PubMed]
  • Hartwell LH. Periodic density fluctuation during the yeast cell cycle and the selection of synchronous cultures. J Bacteriol. 1970 Dec;104(3):1280–1285. [PMC free article] [PubMed]
  • Hartwell LH. Genetic control of the cell division cycle in yeast. IV. Genes controlling bud emergence and cytokinesis. Exp Cell Res. 1971 Dec;69(2):265–276. [PubMed]
  • Hartwell LH. Saccharomyces cerevisiae cell cycle. Bacteriol Rev. 1974 Jun;38(2):164–198. [PMC free article] [PubMed]
  • Hartwell LH, Culotti J, Pringle JR, Reid BJ. Genetic control of the cell division cycle in yeast. Science. 1974 Jan 11;183(4120):46–51. [PubMed]
  • Hartwell LH, Culotti J, Reid B. Genetic control of the cell-division cycle in yeast. I. Detection of mutants. Proc Natl Acad Sci U S A. 1970 Jun;66(2):352–359. [PubMed]
  • Hartwell LH, Mortimer RK, Culotti J, Culotti M. Genetic Control of the Cell Division Cycle in Yeast: V. Genetic Analysis of cdc Mutants. Genetics. 1973 Jun;74(2):267–286. [PubMed]
  • Hartwell LH, Unger MW. Unequal division in Saccharomyces cerevisiae and its implications for the control of cell division. J Cell Biol. 1977 Nov;75(2 Pt 1):422–435. [PMC free article] [PubMed]
  • Hicks JB, Strathern JN, Herskowitz I. Interconversion of Yeast Mating Types III. Action of the Homothallism (HO) Gene in Cells Homozygous for the Mating Type Locus. Genetics. 1977 Mar;85(3):395–405. [PubMed]
  • Johnson BF, Gibson EJ. Autoradiographic analysis of regional cell wall growth of yeasts. III. Saccharomyces cerevisiae. Exp Cell Res. 1966 Mar;41(3):580–591. [PubMed]
  • Johnston GC, Pringle JR, Hartwell LH. Coordination of growth with cell division in the yeast Saccharomyces cerevisiae. Exp Cell Res. 1977 Mar 1;105(1):79–98. [PubMed]
  • Pringle JR. Induction, selection, and experimental uses of temperature-sensitive and other conditional mutants of yeast. Methods Cell Biol. 1975;12:233–272. [PubMed]
  • Pringle JR. The use of conditional lethal cell cycle mutants for temporal and functional sequence mapping of cell cycle events. J Cell Physiol. 1978 Jun;95(3):393–405. [PubMed]
  • Pringle JR, Mor JR. Methods for monitoring the growth of yeast cultures and for dealing with the clumping problem. Methods Cell Biol. 1975;11:131–168. [PubMed]
  • REISSIG JL, STORMINGER JL, LELOIR LF. A modified colorimetric method for the estimation of N-acetylamino sugars. J Biol Chem. 1955 Dec;217(2):959–966. [PubMed]
  • Schekman R, Brawley V. Localized deposition of chitin on the yeast cell surface in response to mating pheromone. Proc Natl Acad Sci U S A. 1979 Feb;76(2):645–649. [PubMed]
  • Seichertová O, Beran K, Holan Z, Pokorný V. The chitin-glucan complex of Saccharomyces cerevisiae. II. Location of the complex in the encircling region of the bud sear. Folia Microbiol (Praha) 1973;18(3):207–211. [PubMed]
  • Seichertová O, Beran K, Holan Z, Pokorný V. The chitin-glucan complex of Saccharomyces cerevisiae. III. Electron-microscopic study of the prebudding stage. Folia Microbiol (Praha) 1975;20(5):371–378. [PubMed]
  • Shearn A, Hersperger G, Hersperger E, Pentz ES, Denker P. Multiple Allele Approach to the Study of Genes in DROSOPHILA MELANOGASTER That Are Involved in Imaginal Disc Development. Genetics. 1978 Jun;89(2):355–370. [PubMed]
  • Tkacz JS, Cybulska EB, Lampen JO. Specific staining of wall mannan in yeast cells with fluorescein-conjugated concanavalin A. J Bacteriol. 1971 Jan;105(1):1–5. [PMC free article] [PubMed]
  • Tkacz JS, Lampen JO. Wall replication in saccharomyces species: use of fluorescein-conjugated concanavalin A to reveal the site of mannan insertion. J Gen Microbiol. 1972 Sep;72(2):243–247. [PubMed]
  • Tkacz JS, MacKay VL. Sexual conjugation in yeast. Cell surface changes in response to the action of mating hormones. J Cell Biol. 1979 Feb;80(2):326–333. [PMC free article] [PubMed]
  • Wilkinson LE, Pringle JR. Transient G1 arrest of S. cerevisiae cells of mating type alpha by a factor produced by cells of mating type a. Exp Cell Res. 1974 Nov;89(1):175–187. [PubMed]
  • Sloat BF, Pringle JR. A mutant of yeast defective in cellular morphogenesis. Science. 1978 Jun 9;200(4346):1171–1173. [PubMed]
  • BERGER LR, REYNOLDS DM. The chitinase system of a strain of Streptomyces griseus. Biochim Biophys Acta. 1958 Sep;29(3):522–534. [PubMed]
  • Byers B, Goetsch L. Behavior of spindles and spindle plaques in the cell cycle and conjugation of Saccharomyces cerevisiae. J Bacteriol. 1975 Oct;124(1):511–523. [PMC free article] [PubMed]

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