Open AccessThe Streptomyces coelicolor ssgB gene is required for early stages of sporulation
Author(s) -
Keijser Bart J.F,
Noens Elke E.E,
Kraal Barend,
Koerten Henk K,
Wezel Gilles P
Publication year - 2003
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 - 10.1016/s0378-1097(03)00481-6
Subject(s) - streptomyces coelicolor , actinorhodin , mutant , biology , hypha , gene , spore , ascus (bryozoa) , streptomyces , genetics , microbiology and biotechnology , bacteria , ascospore
ssgB was identified as a novel early sporulation gene in Streptomyces coelicolor . An ssgB deletion mutant failed to sporulate, over‐produced actinorhodin, and its colonies were significantly larger than those of the parental strain, suggesting an important role for the ssgB gene product in the process of growth cessation prior to sporulation‐specific cell division. This places ssgB temporally before the paralogous sporulation gene ssgA . Analysis of ssgB mutant hyphae by electron microscopy and by confocal fluorescence microscopy showed that it was defective in the initiation of sporulation, as no sporulation septa could be identified, and DNA segregation had not yet been initiated in the mutant.