Open AccessInduction of water‐stress proteins in cyanobacteria exposed to matric‐ or osmotic‐water stress
Author(s) -
Hershkovitz Nitzan,
Oren Aharon,
Post Anton,
Cohen Yehuda
Publication year - 1991
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1991.tb04435.x-i1
Subject(s) - cyanobacteria , osmotic shock , thylakoid , cytoplasm , osmotic pressure , osmosis , chemistry , water stress , stress (linguistics) , biochemistry , salt (chemistry) , botany , biology , membrane , bacteria , chloroplast , gene , genetics , linguistics , philosophy
Specific stress polypeptides were detected in three drought‐resistant cyanobacteria ( Phormidium autumnale , LPP 4 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.