Induction of water-stress proteins in cyanobacteria exposed to matric- or osmotic-water stress

Nitzan Hershkovitz, Aharon Oren*, Anton Post, Yehuda Cohen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Specific stress polypeptides were detected in three drought-resistant cyanobacteria (Phormidium autumnale, LPP4 and Chroococcidiopsis sp.) subjected to matric- and osmotic-water stress. Drought stress caused the induction of at least 2-3 new polypeptides of apparent molecular masses of 30 kDa and 40-45 kDa. The polypeptide of 30 kDa was located in the thylakoid membranes, and the 45-kDa polypeptide in the cytoplasm. When these cyanobacteria were exposed to salt stress polypeptides of similar size appeared.

Original languageAmerican English
Pages (from-to)169-172
Number of pages4
JournalFEMS Microbiology Letters
Volume83
Issue number2
DOIs
StatePublished - 1 Oct 1991

Bibliographical note

Funding Information:
We are grateful to the late Prof. Moshe Shilo for valuable discussions. This study was supported by the Center for Research of Water Reservoirs of the Mekorot Water Company and the Hebrew University of Jerusalem, and by a grant from the National Council for Research and Development, Israel and the GSF, Mtinchen, F.R.G. (to Y.C.).

Keywords

  • Chroococcidiopsis
  • Cyanobacteria
  • Matric-water stress
  • Phormidium
  • Salt stress
  • Stress proteins

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