16 The Family Lactobacillaceae: Genera Other than Lactobacillus

摘要: Members of the genus Pediococcus are Gram-positive, catalase negative, oxidase lactic acid producing bacteria that prefer facultatively aerobic to microaerophilic growth conditions. Glucose and gluconate fermented acid, but without production CO2, which classifies as homofermentative. Cells spherical arranged in a tetrad formation. The Tetragenococcus has similar cell morphology. is genotypically closer related Lactobacillus casei/Lactobacillus paracasei group within than Tetragenococcus. Pediococci normally found same habitats Lactobacillus, Leuconostoc Weissella spp. Most have been isolated from plants plant material. Some strains gastrointestinal tract (GIT) humans animals. acidilactici GIT carp (Cyprinus carpio) freshwater prawns (Macrobrachium rosenbergii). pentosaceus tonsils nasal cavity piglets. Only few rare resistant vancomycin they generally not regarded pathogens. Paralactobacillus was differentiated homofermentative by its phylogenetic position based on 16S rRNA gene sequences sugar fermentation profiles. However, differentiations were denied later selangorensis, sole species Paralactobacillus, reclassified Lactobacillus. only Sharpea azabuensis. phylogenetically catenaformis, sequences. This chapter describes history genera Sharpea.