Bacteria

Définitions de « bacteria »

Bacteria - Nom commun

• Genre d'insectes orthoptères de la famille des phasmidés, comprenant des phasmes dépourvus d'ailes chez les deux sexes, souvent de grande taille et originaires des régions chaudes du globe.

  Parmi les nombreuses espèces de bactéries, il en est qui ont des dimensions extraordinaires pour des insectes, jusqu'à 20 ou 30 centimètres, le bacteria arumatia, par exemple, de la Guadeloupe, qui ressemble à une branche d'arbre.

Évolution historique de l’usage du mot « bacteria » depuis 1800

Synonymes de « bacteria »

• bactérie

Citations contenant le mot « bacteria »

• When a person becomes infected with gonorrhea during sexual intercourse, the bacteria releases a molecule called heptose phosphate into their genital tract. Their body recognizes the heptose phosphate as a threat, and sends white blood cells to try to combat it.

• C’est sans doute l’étape la plus importante : l’introduction du SCOBY. Tirant son nom de l’acronyme « Symbiotic Culture Of Bacteria and Yeast », SCOBY signifie en français « Culture Symbiotique de Levures et de Bactéries ». Il sera introduit dans l’infusion une fois que celle-ci aura refroidi. Le SCOBY viendra littéralement dévorer le thé et le sucre.

• Perrin, A., Jiang, X., Birmingham, C., So, N. & Brumell, J. Recognition of bacteria in the cytosol of mammalian cells by the ubiquitin system. Curr. Biol. 14, 806–811 (2004).

• a, DMSP and DMSOP lyase activities from model organisms with known DMSP lyases. The complement of ddd genes found in tested bacteria are indicated in parentheses. b, DMSP and DMSOP lyase activities of Ddd and Alma enzymes expressed in E. coli BL21. Data are presented as mean ± s.d. (n = 3).

• Specifically, they administered salivary samples of healthy and IBD-afflicted individuals to germ-free mice respectively. After six to eight weeks, the microbial content of the mice's feces were analyzed by 16S ribosomal RNA gene sequencing, which showed that approximately 20 kinds of oral bacteria were present in these mice. Furthermore, an immunological analysis found that the level of TH1 cells, characteristically expressing interferon-gamma protein which activates microphage to enhance bactericidal activities but could be an onset of autoimmune diseases when excessive, significantly increased in some of the mice.

• Interestingly, there appears to be physiological importance of the co-existence of phages and bacterium. Some researchers suggest that this phenomenon may bring potential benefits for the bacterial host, by introducing resistance to other phages or by enhancing the capability of the bacteria to form biofilms, and therefore increase the survivability of microorganisms in their natural ecological niche. Furthermore, the occurrence of prophage sequences in bacterial genomes has also been linked to the potential pathogenicity of microorganisms, which seems particularly relevant to microorganisms living in the human body16,17,18.

• Now, they’ve found evidence that these birds use the same bacteria to protect their young before they’re even born. By filming nesting females, they confirmed that the birds actively paint their eggs with their uropygial secretions.

Traductions du mot « bacteria »

Sources et ressources complémentaires

• Définitions du TLFi
• Synonymes de bacteria sur lebonsynonyme.fr