Medium-Dependent Phenotypes of <i>Streptomyces coelicolor</i> with Mutations in <i>ftsI</i> or <i>ftsW</i>

Abstract

Streptomyces coelicolor A3(2) ftsI- and ftsW-null mutants produced aerial hyphae with no evidence of septation when grown on a traditional osmotically enhanced medium. This phenotype was partially suppressed when cultures were grown on media prepared without sucrose. We infer that functional FtsZ rings can form in ftsI- and ftsW-null mutants under certain growth conditions.