Osmotic shock affects cell wall and cytoskeleton in
Saccharomyces cerevisiae

J 2000

Osmotic shock affects cell wall and cytoskeleton in Saccharomyces cerevisiae

SLANINOVÁ, Iva, Augustin SVOBODA, Sergej ŚESTÁK and Vladimír FARKAŠ

Basic information

Original name

Osmotic shock affects cell wall and cytoskeleton in Saccharomyces cerevisiae

Authors

SLANINOVÁ, Iva, Augustin SVOBODA, Sergej ŚESTÁK and Vladimír FARKAŠ

Edition

Cellular and Molecular Biology, France, C M B Association, 2000, 0145-5680

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

France

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.449

RIV identification code

RIV/00216224:14110/00:00003449

Organization unit

Faculty of Medicine

Keywords in English

cytoskeleton; cell wall; osmotic shock; yeasts

Abstract

V originále

Hyperosmotic growth medium containing 1 M KCl, 1 M mannitol, and/or 1 M glycerol caused cessation of yeast growth for about 2 h and thereafter the growth resumed at almost the original rate. Fluorescent patches on the inner surface of cell walls stained with Calcofluor white was observed. The patches gradually disappeared in buds formed in hyperosmotic medium. Freeze-etched replicas of osmotically stressed cells revealed deep plasma membrane invaginations filled from the periplasmic side with amorphous cell-wall material. The rate of incorporation of D-[U-14C]glucose into the individual cell wall polysaccharides during osmotic shock followed the growth kinetics. No differences in the composition of the cell walls from osmotically stressed yeast and those from the control cells was found. Microtubules disappeared and actin patches were present in both mother cell and bud. After 2 - 3 h in hyperosmotic medium, both microtubules and microfilaments regenerated to their original polarized forms. Strains of S. cerevisiae with mutations in the osmosensing HOG pathway hog1 and pbs2 gave similar response to hyperosmotic shock as the wild-type strain. We conclude that, the hyperosmotic shock causes changes in microtubules, actin cytoskeleton and in the organization of the cell wall. These changes are not dependent on HOG pathway.

Links

GA204/00/0394, research and development project

Name: Buněčná stěna kvasinek jako extracelulární matrix: cytoskelet a stěnové funkce

Investor: Czech Science Foundation, The yeast cell wall as an extracellular matrix: cytoskeleton and cell wall functions

GA204/99/D025, research and development project

Name: Úloha cytoskeletu a buněčné stěny v polarizaci buňky

Investor: Czech Science Foundation, The role of cytoskeleton and cell wall in the cell polarization

Citovat

SLANINOVÁ, Iva, Augustin SVOBODA, Sergej ŚESTÁK and Vladimír FARKAŠ. Osmotic shock affects cell wall and cytoskeleton in Saccharomyces cerevisiae. Cellular and Molecular Biology. France: C M B Association, 2000, vol. 46, -, p. 231. ISSN 0145-5680.

@article{344799,
   author = {Slaninová, Iva and Svoboda, Augustin and Śesták, Sergej and Farkaš, Vladimír},
   article_location = {France},
   article_number = {-},
   keywords = {cytoskeleton; cell wall; osmotic shock; yeasts},
   language = {eng},
   issn = {0145-5680},
   journal = {Cellular and Molecular Biology},
   title = {Osmotic shock affects cell wall and cytoskeleton in Saccharomyces cerevisiae},
   volume = {46},
   year = {2000}
}

TY  - JOUR
ID  - 344799
AU  - Slaninová, Iva - Svoboda, Augustin - Śesták, Sergej - Farkaš, Vladimír
PY  - 2000
TI  - Osmotic shock affects cell wall and cytoskeleton in Saccharomyces cerevisiae
JF  - Cellular and Molecular Biology
VL  - 46
IS  - -
SP  - 231
EP  - 231
PB  - C M B Association
SN  - 01455680
KW  - cytoskeleton
KW  - cell wall
KW  - osmotic shock
KW  - yeasts
N2  - Hyperosmotic growth medium containing 1 M KCl, 1 M mannitol, and/or 1 M glycerol caused cessation of yeast growth for about 2 h and thereafter the growth resumed at almost the original rate. Fluorescent patches on the inner surface of cell walls stained with Calcofluor white was observed. The patches gradually disappeared in buds formed in hyperosmotic medium. Freeze-etched replicas of osmotically stressed cells revealed deep plasma membrane invaginations filled from the periplasmic side with amorphous cell-wall material. The rate of incorporation of D-[U-14C]glucose into the individual cell wall polysaccharides during osmotic shock followed the growth kinetics. No differences in the composition of the cell walls from osmotically stressed yeast and those from the control cells was found. Microtubules disappeared and actin patches were present in both mother cell and bud. After 2 - 3 h in hyperosmotic medium, both microtubules and microfilaments regenerated to their original polarized forms. Strains of S. cerevisiae with mutations in the osmosensing HOG pathway hog1 and pbs2 gave similar response to hyperosmotic shock as the wild-type strain. We conclude that, the hyperosmotic shock causes changes in microtubules, actin cytoskeleton and in the organization of the cell wall. These changes are not dependent on HOG pathway.
ER  -

SLANINOVÁ, Iva, Augustin SVOBODA, Sergej $\backslash$'SESTÁK and Vladimír FARKAŠ. Osmotic shock affects cell wall and cytoskeleton in Saccharomyces cerevisiae. \textit{Cellular and Molecular Biology}. France: C M B Association, 2000, vol.~46, -, p.~231. ISSN~0145-5680.

Detailed Information on Publication Record