The phyla Proteobacteria and Firmicutes contain the “classic” gram-negative and gram-positive bacteria, respectively. Many of these organisms are an important part of normal flora, and context is important when clinically interpreting culture results. The most significant member of Proteobacteria in sn...
Deltaproteobacteria also includes the genusBdellovibrio, species of which are parasites of other gram-negative bacteria.Bdellovibrioinvades the cells of the host bacterium, positioning itself in the periplasm, the space between the plasma membrane and the cell wall, feeding on the host’s proteins and...
Liesack, W., and K. Finster. 1994 Phylogenetic analysis of five strains of Gram-negative, obligately anaerobic, sulfur-reducing bacteria and description of Desulfuromusa gen. nov., including Desulfuromusa kysingii sp. nov., Desulfuromusa bakii sp. nov., and Desulfuromusa succinoxidans sp...
Its members are Gram-negative, facultatively anaerobic, oxidase-negative, and catalase-positive straight rods. They are commonly isolated from the gastrointestinal tract of humans and animals including mammals, birds, reptiles, fish, and insects and from foods, such as meat and dairy products (Janda...
Gram-positive Heliobacterium chlorum (Gest and Favinger, 1983; Woese et al., 1985a), branch- ing deeply in the Clostridium lineage. Secondly, early 16S rRNA cataloguing data indicated the high phylogenetic similarity between the nonsul-
mediatlanticus media were used as negative controls, whereas the CFS from the wild-type V. harveyi strain BB120 was used as a 1223 The ISME Journal 1224 Quorum sensing in deep-sea vent Epsilonproteobacteria I P´erez-Rodr´ıguez et al positive control. All bioluminescence induction ...
Gram-positive Bacteria, chlamydias and mycoplasmas each fall into distinct clusters. However, there are some striking discrepancies between the protein domain-based clustering and phylogenetic classification. For example, the oral pathogenTreponema denticola(marked with an asterisk in Figure1) clusters wit...
Lane 1, PCR amplification using cDNA previously synthesized with Reverse Transcriptase from total RNA from the NA1000 strain; lane 2, PCR amplification from total NA1000 genomic DNA (positive control); lane 3, PCR amplification from total RNA from the NA1000 strain (negative control). The 0....
In plant pathogenic bacteria, c-di-GMP regulates virulence traits in a positive as well as a negative fashion. In the soft rot pathogen Dickeya dadantii, production of plant cell wall lytic enzymes is repressed by c-di-GMP (Yuan et al. 2020). In the phytopathogen Xanthomonas campestris, DG...
LactonaseCRISPR-CasVirulenceBiofilmQuorum sensing (QS) is a molecular communication system that bacteria use to harmonize the regulation of genes in a cell density-dependent manner. In proteobacteria, QS is involved, among others, in virulence, biofilm formation or CRISPR-Cas gene regulation. Here,...