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Effects of methionine sulphoximine on protein transients during heterocyst differentiation in Anabaena and Cylindrospermum spp.
Author(s) -
Grover I. S.,
Puri S.
Publication year - 1982
Publication title -
zeitschrift für allgemeine mikrobiologie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0044-2208
DOI - 10.1002/jobm.19820220303
Subject(s) - heterocyst , ammonium chloride , ammonium , derepression , biology , biochemistry , methionine , ammonium sulfate , anabaena , cyanobacteria , chemistry , gene , genetics , chromatography , gene expression , bacteria , amino acid , psychological repression , organic chemistry
Heterocystous blue‐green algae normally do not develop heterocysts if grown in the medium enriched with ammonium compounds. If such cultures are resuspended in a medium lacking combined nitrogen, the heterocysts differentiate within 24 h. L ‐methionine‐ DL ‐sulphoximine (MSO) has been reported to induce heterocysts even in the presence of ammonium chloride. The changes in gel electrophoresis protein profiles of cultures developing heterocysts, in the ammonium chloride enriched medium supplemented with MSO suggest that heterocyst differentiation in the presence of ammonium chloride and MSO may be due to derepression of heterocyst formation genes by MSO.