Dynamics of Bacillus subtilis helical macrofiber morphogenesis: writhing, folding, close packing, and contraction
نویسندگان
چکیده
منابع مشابه
Helical macrofiber formation in Bacillus subtilis: inhibition by penicillin G.
The folding process required for helical macrofiber formation after the outgrowth of Bacillus subtilis spores was found to be blocked by very low concentrations of penicillin G (1 to 3 ng/ml). Under such conditions, growth and septation without cell separation resulted in characteristic disorganized multicellular structures. Higher concentrations (4 and 10 ng/ml) were needed to inhibit spore ou...
متن کاملHelical Bacillus subtilis macrofibers: morphogenesis of a bacterial multicellular macroorganism.
Helical bacterial macroorganisms have been produced by the selection of appropriate Bacillus subtilis mutants and the establishment of specific growth conditions. Threadlike fibers ranging in length to approximately 1 cm are produced in fluid culture by the parallel association of many division-suppressed filaments in helical arrangement. A more open ball-like structure of complicated woven arc...
متن کاملRegulation of Bacillus subtilis macrofiber twist development by D-alanine.
Twist states of Bacillus subtilis macrofibers were found to vary as a function of the concentration of D-alanine in the medium during growth. L-Alanine in the same concentration range had no effect. Increasing concentrations of D-alanine resulted in structures progressively more right-handed (or less left-handed). All strains examined in this study, including mutants fixed in the left-hand doma...
متن کاملRegulation of Bacillus subtilis macrofiber twist development by D-cycloserine.
The effect of D-cycloserine on the establishment of twist states in Bacillus subtilis macrofibers was examined. Macrofibers produced in the presence of the drug differed in twist compared with those produced in its absence. The degree of twist alteration was dependent on the concentration of D-cycloserine in the growth medium. Macrofibers of different twist states representative of the entire t...
متن کاملThe intestinal life cycle of Bacillus subtilis and close relatives.
Bacillus subtilis is considered a soil organism for which endospore formation provides a means to ensure long-term survival in the environment. We have addressed here the question of what happens to a spore when ingested. Spores displaying on their surface a heterologous antigen, tetanus toxin fragment C (TTFC), were shown to generate anti-TTFC responses not to the antigen contained in the prim...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1982
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.151.1.438-449.1982