Biomaterial Database

Selection for nonbuoyant morphological mutants of Caulobacter crescentus. 1978

J S Poindexter

Morphological mutants of Caulobacter crescentus were isolated by selecting for cells that did not possess normal, buoyancy-conferring stalks. The most prevalent phenotype enriched by the selection was structurally deficient stalks (designated "Cds"), observable as crumpled or flattened stalks. The second phenotype ("Abs") was observed as spontaneous shedding of normal-appearing stalks. Third, one mutant ("Ecs") was isolated that sheds not only stalks, but also miniature stalked and nonstalked cells.

UI	MeSH Term	Description	Entries
D009154	Mutation	Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.	Mutations
D010641	Phenotype	The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment.	Phenotypes
D001419	Bacteria	One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.	Eubacteria